研究発表要旨
9 月 28 日（月）1A01 〜 1A08：口頭発表

A 会場（国際会議場）

1A01ᅛయ࡟࠾ࡅࡿ㧗࢚ࢿࣝࢠ࣮࢖࢜ࣥࡢ࣍ࢵࢺ࢔ࢺ࣒໬Ꮫⓗ㐣⛬࡟㛵ࡍࡿ◊✲(XIX) 㸫Ⅳ⣲ྵ᭷࣎ࣟࣥ⭷࡟↷ᑕࡋࡓỈ⣲ྠ఩యࡢ໬Ꮫⓗᣲື࡟ཬࡰࡍࣇ
࢚ࣝࣥࢫ౫Ꮡᛶ㸫㸦㟼ᒸ኱⌮ᨺᑕ◊㸯, ᰾⼥ྜ◊㸰㸧‫ۑ‬ᢲᑿ⣧ஓ 1ࠊ㕥ᮌ⚈Ꮚ 1ࠊᑠᯘ ┿ 1ࠊ಴⏣⌮Ụ 1ࠊ⋤ ୓ᬒ 1ࠊⰱᕝ┤Ꮚ 2ࠊ┦Ⰻ᫂⏨ 2ࠊ኱▮ᜤஂ 1ࠊዟ㔝೺஧ 1࠙⥴ゝࠚD-T ᰾⼥ྜ⅔࡟࠾࠸࡚ࠊࣉࣛࢬ࣐୰࡟Ꮡᅾࡍࡿ㓟⣲ࡸⅣ⣲➼ࡢ୙⣧≀ࡢ㝖ཤࠊཬࡧࣉࣛࢬ࣐࡬ࡢ୙⣧≀ΰධࢆᢚไࡍࡿࡓࡵࠊ➨୍ቨ࡟࠾࠸࡚࣍࢘⣲(࣎ࣟࣥ)ࢆ⵨╔ࡉࡏࡿ࣎ࣟࢽ
ࢮ࣮ࢩࣙࣥࡀ᳨ウࡉࢀ࡚࠸ࡿࠋࡇࡢ㝿ࠊ࣎ࣟࣥ⭷࡟ࡣⅣ⣲ࡸ㓟⣲➼ࡢ୙⣧≀ࡀΰධࡍࡿࡇ࡜
ࡀண᝿ࡉࢀࠊࡉࡽ࡟ࣉࣛࢬ࣐࠿ࡽ₃ὤࡋࡓ㧗࢚ࢿࣝࢠ࣮ࡢࢺࣜࢳ࣒࢘ࡀᡴࡕࡇࡲࢀࠊ⭷ෆ࡟࡚ࢺࣜࢳ࣒࢘࡜࣎ࣟࣥ࠾ࡼࡧࡑࡢ୙⣧≀࡜ࡀ┦஫స⏝ࡍࡿ࡜⪃࠼ࡽࢀࡿࠋࡑࡢࡓࡵࠊ⭷ෆ࡟࠾ࡅࡿࢺࣜࢳ࣒࢘⁫␃ᣲືࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࡣ㔜せ࡛࠶ࡿࠋࡑࡇ࡛ࠊᮏ◊✲࡛ࡣ࣎ࣟࣥ⭷୰ࡢⅣ⣲୙⣧≀ࡀࢺࣜࢳ࣒࢘ࡢ໬Ꮫⓗᣲື࡟ཬࡰࡍᙳ㡪࡟ࡘ࠸࡚ࠊ᪼ ⬺㞳(TDS)ἲ࠾ࡼࡧ X⥺ග㟁Ꮚศග(XPS)ἲࢆ⏝࠸࡚ホ౯ࡋࡓࠋ࠙ᐇ㦂ࠚࣉࣛࢬ࣐໬ᏛẼ┦⵨╔ (P-CVD) ἲ࡟ࡼࡾࠊ࣒࡛࣊ࣜ࢘ᕼ㔘ࡋࡓࢹ࢝࣎ࣛࣥ࢞ࢫཬࡧ࣓ࢱ
ࣥࢆ⏝࠸࡚Ⅳ⣲ྵ᭷࣎ࣟࣥ⭷ࢆࢩࣜࢥࣥᇶᯈ࡟ᡂ⭷ࡋࡓࠋḟ࡟୙⣧≀ࡢ㝖ཤࢆ┠ⓗ࡜ࡋ࡚ࠊ1100 K
࡟࡚ 10 ศ㛫ࡢຍ⇕ฎ⌮ࢆ⾜࠸ࠊXPS ᐃࢆ⾜࠸Ⅳ⣲ྵ᭷࣎ࣟࣥ⭷୰ࡢඖ⣲⤌ᡂẚࢆホ౯ࡋࡓࠋࡑࡢᚋᐊ ࡟࠾࠸࡚ࠊ㔜Ỉ⣲࢖࢜ࣥ(D2+)↷ᑕࢆࠊ࢖࢚࢜ࣥࢿࣝࢠ࣮ࢆ 1.0 keV ࠊ࢖࢜ࣥࣇࣛࢵࢡࢫࢆ
1.0×1018 D+ m-2 s-1 ࡜ࡋࠊ࢖࢜ࣥࣇ࢚ࣝࣥࢫࢆ 0.1 × 1022 D+ m-2 ࠿ࡽ 2.0 × 1022 D+ m-2 ࡢ⠊ᅖ࡛ኚ໬ࡉࡏ
࡚⾜࠸ࠊ෌ᗘ XPS ᐃࢆ⾜ࡗࡓࠋࡲࡓࠊ㔜Ỉ⣲ࡢ⁫␃ᣲືࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵ࡟ࠊ᪼ ㏿ᗘࢆ 0.5
K s-1ࠊ᪼ 㡿ᇦࢆᐊ ࠿ࡽ 1100 K ࡟࠾࠸࡚ TDS ᐃࢆ⾜ࡗࡓࠋ࠙⤖ᯝ࣭⪃ᐹࠚຍ⇕ฎ⌮ᚋࡢXPS ᐃࡼࡾࠊⅣ⣲ྵ᭷࣎ࣟࣥ⭷ࡢඖ⣲⤌ᡂẚࡣ࣎ࣟࣥࡀ58 %, Ⅳ⣲ࡀ40 %, 㓟⣲ࡀ2 %࡛࠶ࡗࡓࠋᅗ࡟ࡣ࢖࢜ࣥࣇ࢚ࣝࣥࢫࢆ0.1 × 1022 D+ m-2࠿ࡽ2.0 × 1022 D+ m-2ࡢ⠊ᅖ࡛ኚ໬ࡉࡏ↷ᑕࡋࡓ㝿ࡢD2 TDSࢫ࣌ࢡࢺࣝࢆ♧ࡍࠋࡇࡢ⤖ᯝ࠿ࡽࠊ0.5 × 1022 D+ m-2࠿ࡽ2.0 × 1022⣲⬺㞳࡛࠶ࡿࡇ࡜࡜⪃࠼ࡽࢀࡓ㹙1㹛ࠋࡲࡓࠊ0.1 × 1022
D+ m-2࡟࠾ࡅࡿD2 TDSࢫ࣌ࢡࢺ࡛ࣝࡣ950 K௜㏆࡟ࡢࡳ⬺㞳ࣆ࣮ࢡࡀぢࡽࢀࠊB-D-B⤖ྜࠊB-D⤖ྜ࠿ࡽࡢ⬺㞳࡟㉳ᅉࡍࡿࣆ࣮ࢡࡣぢࡽࢀ࡞࠿ࡗࡓࠋ
௨ୖࡢࡇ࡜ࡼࡾࠊ
㔜Ỉ⣲ࡣ࣎ࣟࣥࡼࡾࡶⅣ⣲࡟ࡼࡾᤕᤊ
ࡉࢀࡸࡍ࠸ࡇ࡜ࡀ♧၀ࡉࢀࡓࠋᮏⓎ⾲࡛ࡣD2+↷ᑕᚋࡢXPS ᐃࡢ⤖ᯝࡶ㋃ࡲ࠼ࠊࡼࡾヲ⣽࡟㆟ㄽࡍࡿணᐃ࡛࠶ࡿࠋ
㹙1㹛S.Suzuki et al., J. Nucl. Mater. 390 (2009) 200.

-2
18

ࡽࠊB-D-B⤖ྜࠊB-D⤖ྜࠊB-C-D⤖ྜ࠿ࡽࡢ㔜Ỉ

Desorption rate / 10 D2 m s࡞ࡿࡇ࡜ࡀࢃ࠿ࡾࠊࡇࢀࡲ࡛ࡢ◊✲ࡼࡾࠊప ഃ࠿-1

D+ m-2ࡢTDSࢫ࣌ࢡࢺࣝࡣ」ᩘࡢ⬺㞳ࣆ࣮ࢡ࠿ࡽ
2.0

22

+

-2

Fluence / 10 D m
2.0
1.5
1.0
0.5
0.1
1.0
0.5
0.0
300

400

500

600

700

800

900 1000 1100

Temperature / Kᅗ ྛࣇ࢚ࣝࣥࢫ࡟࠾ࡅࡿ D2 TDS ࢫ࣌ࢡࢺࣝ

Studies on hot atom chemical behavior of energetic ions in solids(XIX)-Dependence of implantation ion fluence on chemical behavior of energetic hydrogen isotopes
implanted into carbon-contained boron filmsOSUO, J., SUZUKI, S., KOBAYASHI, M., KURATA, R., WANG, W., ASHIKAWA, N., SAGARA, A.,
OYA, Y., OKUNO, K.
− 16 −

1A02

ᅛయ࡟࠾ࡅࡿ㧗࢚ࢿࣝࢠ࣮࢖࢜ࣥࡢ࣍ࢵࢺ࢔ࢺ࣒໬Ꮫⓗ㐣⛬࡟㛵ࡍࡿ◊✲%%
㸫Ⅳ⣲̺㔜Ỉ⣲࢖࢜ࣥࢆྠ᫬↷ᑕࡋࡓࢱࣥࢢࢫࢸࣥ࡟࠾ࡅࡿ㔜Ỉ⣲⁫␃ᣲືࡢࣇ࢚ࣝࣥࢫ౫Ꮡᛶ
㟼ᒸ኱⌮ᨺᑕ◊ ࠊ᰾⼥ྜ◊ ࠊ஑኱ᛂຊ◊ ‫ۑ‬ᯇᒸ࿴ᚿ ࠊ㕥ᮌ⚈Ꮚ ࠊᑠᯘ ┿ ࠊ಴⏣⌮Ụ ࠊ⋤ ୓ᬒ ࠊⰱᕝ┤Ꮚ ࠊ┦Ⰻ᫂⏨ ࠊ  ྜྷ⏣┤ு ࠊ኱▮ᜤஂ ࠊዟ㔝೺஧

.:798;2769*;.

 5 :

࠙⥴ゝࠚḟୡ௦ࡢ࢚ࢿࣝࢠ࣮※࡜ࡋ࡚㔜Ỉ⣲࡜ࢺࣜࢳ࣒࢘ࢆ⇞ᩱ࡜ࡋࡓ᰾⼥ྜⓎ㟁ࡢᐇ⌧࡟ྥࡅࡓ◊✲ࡀ㐍ࡵࡽࢀ࡚࠸ࡿࠋࣉࣛࢬ࣐ᑐྥᶵჾ࡛࠶ࡿࢲ࢖ࣂ࣮ࢱ࡟ࡣ⅔ෆࡢ୙⣧≀ࢆ㝖ཤࡍࡿᙺ๭ࡀ࠶ࡾࠊࢱࣥࢢࢫࢸࣥ࠾ࡼࡧⅣ⣲⧄⥔」ྜᮦࡢే⏝ࡀ⪃࠼ࡽࢀ࡚࠸ࡿࠋࡇࢀࡽࡣࣉ
ࣛࢬ࣐࡟┤᥋᭚ࡉࢀࠊ㧗࢚ࢿࣝࢠ࣮⢏Ꮚ࡟ࡼࡿࢫࣃࢵࢱࣜࣥࢢࢆཷࡅ࡚ࠊࢲ࢖ࣂ࣮ࢱ⾲㠃ࡢࢱࣥࢢࢫࢸࣥୖ࡛ࢱࣥࢢࢫࢸࣥⅣ⣲ΰྜᒙࢆᙧᡂࡍࡿ࡜⪃࠼ࡽࢀࡿࠋࡲࡓࠊΰྜᒙᙧᡂ࡜ྠ᫬࡟ࠊ
ࣉࣛࢬ࣐ࡼࡾ₃ὤࡋࡓ㧗࢚ࢿࣝࢠ࣮ࡢࢺࣜࢳ࣒࢘ࢆྵࡴỈ⣲ྠ఩యࡀΰྜᒙ୰࡟⁫␃ࡍࡿࡇ࡜ࡀண᝿ࡉࢀࡿࠋࡑࡢࡓࡵࠊ」ྜ࢖࢜ࣥ↷ᑕ⎔ቃ࡟࠾ࡅࡿࢺࣜࢳ࣒࢘⁫␃ࢲ࢖ࢼ࣑ࢵࢡࢫࢆ⌮ゎࡍࡿᚲせࡀ࠶ࡿࠋᮏ◊✲࡛ࡣࠊΰྜᒙᙧᡂ᫬࡟࠾ࡅࡿỈ⣲ྠ఩యࡢᤕᤊ㐣⛬ࢆ᫂ࡽ࠿࡟ࡍࡿ
ࡓࡵࠊࢱࣥࢢࢫࢸࣥ࡟ᑐࡋⅣ⣲࢖࢜ࣥ࠾ࡼࡧࢺࣜࢳ࣒࢘ࢆᶍᨃࡋࡓ㔜Ỉ⣲࢖࢜ࣥ ࢆࠊ✀ࠎࡢࣇ࢚ࣝࣥࢫ࡛ྠ᫬↷ᑕࡋࠊ᪼ ⬺㞳! ἲཬࡧ % ⥺ග㟁Ꮚศග% ἲࢆ⏝࠸࡚㔜Ỉ⣲ࡢ໬Ꮫⓗᣲື࡟ࡘ࠸᳨࡚ウࡋࡓࠋ࠙ᐇ㦂ࠚヨᩱ࡟ࡣ࢔ࣛ࢖ࢻ࣐ࢸࣜ࢔ࣝ♫〇ࢱࣥࢢࢫࢸࣥ 55ĳ?  55; ࢆ⏝࠸ࡓࠋࡣࡌࡵ࡟୙
⣧≀㝖ཤࢆ┠ⓗ࡜ࡋࡓຍ⇕ฎ⌮ࢆ    ࡟࡚ ศ㛫⾜ࡗࡓࠋ↷ᑕ᮲௳࡜ࡋ࡚ ࡜  ࡢᡴࡕ㎸ࡳ῝ࡉࡀྠࡌ࡟࡞ࡿࡼ࠺࡟↷ᑕ࢚ࢿࣝࢠ࣮ࢆࡑࢀࡒࢀ  3.# ࠾ࡼࡧ   3.#  ࡜ࡋࠊ
ࡢ࢖࢜ࣥࣇࣛࢵࢡࢫࢆ  ?  5 : ࠊ ࢆ  ? 5 : ࡜ࡍࡿࡇ࡜࡛ ࢖࢜ࣥࣇࣛ
ࢵࢡࢫẚࢆ  ࡟ᅛᐃࡋࠊ
࢖࢜ࣥࣇ࢚ࣝࣥࢫࢆࡑࢀࡒࢀ    ?
 5 ࠊ    ?
 5
ࡢ⠊ᅖ࡛ኚ໬ࡉࡏࠊᐊ ࡟࡚  ྠ᫬↷ᑕࢆ⾜ࡗࡓࠋ↷ᑕࡋࡓヨᩱࡢ໬Ꮫ≧ែศᯒࢆ⾜࠺ࡓࡵ࡟ࠊ% ⥺※࡜ࡋ࡚ 4Į ࢆ⏝࠸ࡓ %
ᐃࢆ⾜ࡗࡓᚋࠊ᪼ 㡿ᇦࢆᐊ ࠿ࡽ   ࠊ᪼㏿ᗘࢆ  : ࡜ࡋ࡚ !
ᐃࢆ⾜࠸ࠊࡑࢀࡒࢀࡢ⤖ᯝࡢẚ㍑ࢆ⾜ࡗࡓࠋ࠙⤖ᯝ࣭⪃ᐹࠚᅗ࡟✀ࠎࡢࣇ࢚ࣝࣥࢫ࡟࠾࠸࡚ྠ᫬↷ᑕࡋࡓ㝿ࡢ㔜Ỉ⣲ ! ࢫ࣌ࢡࢺࣝࢆ♧ࡍࠋࡇࡢࢫ࣌ࢡࢺࣝࡣ ࡘࡢ㔜Ỉ⣲⬺㞳ࣆ࣮ࢡ࠿ࡽ࡞
 /4<.6,. 5   ࡿ࡜⪃࠼ࡽࢀࡓࠋ≉࡟    ௜㏆ࡢࣆ࣮ࢡࡣ    ( )+76- ࡜ࡋ࡚ᤕᤊࡉࢀࡓ㔜Ỉ⣲ࡢ⬺㞳࡛࠶ࡾ ࠊࡇࡢ⬺㞳㔞ࡣ  ?
  5 ࠊ  ?
  5 ࠿ࡽࠊ





 ?
 5 ࠊ  ?
  5 ࡲ࡛ࡣቑຍࡋࡓࡀࠊ
ࡑࢀ௨ୖࡢࣇ࢚ࣝࣥࢫ࡛ࡣῶᑡࡋ࡚࠸ࡓࠋ
ࡇࡢࡇ࡜

 
 
 5 ࠊ  ?
 5ࡼࡾࠊࣇ࢚ࣝࣥࢫࡀ  ?
࡟࠾࠸࡚ࡣࠊⅣ⣲࡟ࡼࡿ㔜Ỉ⣲ࡢᤕᤊࡼࡾࡶࠊ↷ᑕࡋࡓ   ࡟ࡼࡿⅣ⣲ࡢ໬Ꮫࢫࣃࢵࢱࣜࣥࢢࡢᙳ㡪!.58.9*;<9.
ࡀ኱ࡁࡃ࡞ࡿࡇ࡜ࡀ⪃࠼ࡽࢀࡓࠋᮏⓎ⾲࡛ࡣ %
ᐃࡢ⤖ᯝࡶ㋃ࡲ࠼ࠊࡼࡾヲ⣽࡟㆟ㄽࡍࡿணᐃ࡛࠶ࡿࠋᅗ ✀ࠎࡢࣇ࢚ࣝࣥࢫ࡛ྠ᫬↷ᑕࡋࡓ㝿ࡢ( )&>* et al., J.Nucl. Mater390-391   
 ! ࢫ࣌ࢡࢺࣝ

;<-2.: 76 17; *;75 ,1.52,*4 +.1*=279 7/ .6.90.;2, 276: 26 :742-:%%.8.6-.6,. 7/ 276 /4<.6,. 76
-.<;.92<59.;.6;276+.1*=27926:25<4;*6.7<:-.<;.92<5*6-,*9+76276:2584*6;.-;<60:;.6
! "  "'"  &   "!  $ $  $ & &&"

− 17 −

1A03

࿕૕ߦ߅ߌࠆ㜞ࠛࡀ࡞ࠡ࡯ࠗࠝࡦߩࡎ࠶࠻ࠕ࠻ࡓൻቇ⊛ㆊ⒟ߦ㑐ߔࠆ⎇ⓥ(XXI)㧙ࠬ࠹ࡦ࡟ࠬ㉄ൻጀਛߦ߅ߌࠆ㊀᳓⚛ṛ⇐᜼േߦ෸߷ߔ㉄ൻጀᒻᚑ᷷ᐲ
ߩᓇ㗀ߩ⸃᣿㧙㧔㕒ጟᄢℂ᡼኿⎇ 1‫ޔ‬ේሶജᯏ᭴ 2㧕٤㋈ᧁ ఝ᢯ 1‫ޔ‬㋈ᧁ ␽ሶ 1‫ޔ‬ዊᨋ ⌀ 1‫ޔ‬

18

-2

Desorption rate / 10 D2 m s-1ୖ↰ ℂᳯ 1‫ਁ ₺ޔ‬᥊ 1‫ޔ‬ᨋ Ꮑ 2‫ޔ‬ጊ⷏ ᢅᒾ 2‫ޔ‬ᄢ⍫ ᕶਭ 1‫ޔ‬ᅏ㊁ ஜੑ 1‫᧚ࠬ࡟ࡦ࠹ࠬ ޤ⸒✜ޣ‬ᢱ(SS316)ߪ㊀᳓⚛(D)ߣ࠻࡝࠴࠙ࡓ(T)ࠍΆᢱߣߔࠆ D-T ᩭⲢวἹߩ⌀ⓨኈེ߿಄ළ▤╬ߦ᏷ᐢߊ೑↪ߐࠇࠆߎߣ߇ᬌ⸛ߐࠇߡ޿ࠆ‫ޕ‬ታᯏㆇォᤨߦ࠻࡝࠴࠙ࡓ߇ࠬ
࠹ࡦ࡟ࠬ᧚ᢱ⴫㕙߅ࠃ߮ౝㇱߦๆ⌕‫ޔ‬ṛ⇐ߔࠆߎߣ߇੍ᗐߐࠇࠆ‫᧚ࠬ࡟ࡦ࠹ࠬޕ‬ᢱ⴫㕙ߦߪ㉄ൻጀ߇ᒻᚑߐࠇ‫ࠍࡓ࠙࠴࡝࠻ޔ‬฽߻᳓⚛ห૏૕ߪਥߦߎߩ㉄ൻጀਛߦṛ⇐ߔࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ‫㉄ޔߚ߹ޕ‬ൻጀߩൻቇ⁁ᘒߪ㉄ൻጀᒻᚑᤨߩ᷷ᐲߦᄢ߈ߊᓇ㗀ࠍฃߌࠆߚ߼‫࡝࠻ޔ‬࠴࠙ࡓṛ⇐᜼േߦ߽ᄢ߈ߊᓇ㗀ߔࠆߣ੍ᗐߐࠇࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪ‫ޔ‬SS316 ⴫㕙ߦ㉄ൻጀࠍቶ᷷‫ޔ‬473 K‫ޔ‬673 K ߩฦ᷷ᐲߢᒻᚑߐߖ‫ࠍࡓ࠙࠴࡝࠻ޔ‬ᮨᡆߒߚ㊀᳓⚛ࠗࠝࡦ(D2+)ࠍᵈ౉
ߔࠆߎߣߢ‫㉄ޔ‬ൻጀᒻᚑᤨߩ⹜ᢱ᷷ᐲߩ㆑޿߇෸߷ߔ᳓⚛ห૏૕ṛ⇐᜼േߩᄌൻߦߟ޿ߡൻ
ቇ⊛ⷞὐ߆ࠄᬌ⸛ߒߚ‫ޕ‬‫ޣ‬ታ㛎‫⹜ޤ‬ᢱߪ SS316 ᧼(10×10 mm2, 1.0 mmt)ࠍ↪޿‫⴫ޔ‬㕙ߦᒻᚑߒߡ޿ࠆ㉄ൻጀࠍ㒰ߊߚ߼‫ޔ‬ਇᵴᕈࠟࠬ㔓࿐᳇ਅ 1173 K ߢ 10 ಽ㑆ടᾲಣℂࠍⴕߞߚ‫ޕ‬ᰴߦ⹜ᢱ᷷ᐲࠍቶ᷷‫ޔ‬473 K‫ޔ‬673 K
ߣߒߡ 1 ᤨ㑆ߩᄢ᳇ᦑ㔺ࠍⴕ޿‫㉄ޔ‬ൻጀࠍᒻᚑߐߖߚ‫ޕ‬ቶ᷷ߦߡฦ⹜ᢱߦኻߒ‫ޔ‬D2+ ࠍᾖ኿ᷓߐ߇ᒻᚑߒߚ㉄ൻጀ㗔ၞౝߣߥࠆࠃ߁ߦ‫࡯ࠡ࡞ࡀࠛޔ‬0.5 keV D2+ ߣߒ‫ࠍࠬࠢ࠶࡜ࡈޔ‬5.0×1017 D+ m-2 s-1‫ ࠍࠬࡦࠛ࡞ࡈޔ‬5.0×1021 D+ m-2 ߣߒߡᾖ኿ߒߚ‫ޕ‬ᾖ኿೨ᓟߩ㉄ൻጀߩൻቇ⁁ᘒᄌൻࠍ⹏ଔߔࠆߚ߼‫ޔ‬D2+ᾖ኿೨ᓟߦ X ✢శ㔚ሶಽశ(XPS)᷹ቯࠍⴕ޿‫ޔ‬᣹᷷ㅦᐲࠍ 0.5 K s-1
ߣߒߡ 1273 K ߹ߢ᣹᷷⣕㔌(TDS)᷹ቯࠍⴕߞߚ‫ޕ‬ฦ⹜ᢱߦߟ޿ߡ‫ޔ‬Ar+ࠬࡄ࠶࠲ᴺࠍ↪޿ߚ
XPS ߦࠃࠆᷓߐಽᨆ߽ⴕ޿‫ޔ‬ฦ㉄ൻጀߩൻቇ⁁ᘒࠍ⹏ଔߒߚ‫ߚ߹ޕ‬ടᾲಣℂᓟ‫ޔ‬ᄢ᳇ᦑ㔺ߒߥ޿ߎߣߢ㉄ൻጀࠍᒻᚑߐߖߕߦห᭽ߩታ㛎ࠍⴕ޿‫㉄ޔ‬ൻጀᒻᚑ⹜ᢱߣߩᲧセࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ࡮⠨ኤ‫ޤ‬࿑ߦ㉄ൻጀࠍᒻᚑߐߖߚ⹜ᢱ‫㉄߮ࠃ߅ޔ‬ൻጀࠍᒻᚑߒߡ޿ߥ޿⹜ᢱࠍ↪޿ߚ㓙ߩ D2 TDS ࠬࡍࠢ࠻࡞ࠍ␜ߔ‫㉄ޕ‬ൻጀߩή޿⹜ᢱߦ߅ߌࠆ⣕㔌ࠬࡍࠢ࠻࡞ߣᲧセߒߡ‫㉄ޔ‬ൻጀࠍᒻᚑߒߚ⹜ᢱߢߪ㊀᳓⚛ṛ⇐㊂߇ᄢ߈ߊჇടߔࠆߎߣ߇ࠊ߆ࠆ‫㉄ޔߚ߹ޕ‬ൻጀᒻᚑ᷷ᐲ
߇਄᣹ߔࠆߦᓥ޿‫ޔ‬
ో㊀᳓⚛⣕㔌㊂߅ࠃ߮ 600-800 K ߦ߅ߌࠆ⣕㔌㊂߇Ⴧടߒߚ‫ ߩߎޕ‬600-800
K ߩ⣕㔌ࡇ࡯ࠢߪ‫ޔ‬᳓㉄ၮࠍᒻᚑߒߡṛ⇐ߒߚ㊀
4.0
673 K
᳓⚛ߩ⣕㔌ࡇ࡯ࠢߢ޽ࠆߎߣ߇ D2+ ᾖ኿೨ᓟߩ
473 K
R.T.
XPS ߩ⚿ᨐ߆ࠄ␜ໂߐࠇߚ‫ޕ‬XPS ߦࠃࠆᷓߐᣇะ
3.0㉄ൻጀήಽᨆࠃࠅᛂߜㄟߺᷓߐ㗔ၞߢߪ㊀᳓⚛ߪਥߦ㉄ൻ
2.0㋕ߣ⋧੕૞↪ߒߡ߅ࠅ‫ᦑޔ‬㔺᷷ᐲߩ਄᣹ߦᓥ޿‫ޔ‬⹜ᢱਛߩ㉄⚛Ớᐲ߇Ⴧടߒߡ޿ࠆߣߣ߽ߦ㋕ߩൻ
1.0ቇ⁁ᘒ߇⇣ߥࠆߎߣ߇ࠊ߆ߞߚ‫⚿ߩࠄࠇߎޕ‬ᨐ߆0.0ࠄ‫ޔ‬SS316 ߩ㉄ൻጀߦ߅ߌࠆ㊀᳓⚛ṛ⇐㊂ߪ‫㉄ޔ‬
400
600
800
1000
ൻ㋕ߩൻቇ⁁ᘒߦᄢ߈ߊ⿠࿃ߔࠆߎߣ߇⠨߃ࠄࠇ
Temperature / Kߚ‫ᦑޔߪߡ޿߅ߦ⴫⊒ᧄޕ‬㔺᷷ᐲߩᄌൻߦ઻߁㉄࿑ ฦ㉄ൻጀᒻᚑ᷷ᐲߦ߅ߌࠆ
ൻጀߩൻቇ⁁ᘒߩᄌൻߣ㊀᳓⚛ṛ⇐᜼േߩ⋧㑐㑐
D2 TDS ࠬࡍࠢ࠻࡞
ଥߦ㑐ߒߡ‫੍ࠆߔ⺰⼏ߦ⚦⹦ࠅࠃޔ‬ቯߢ޽ࠆ‫ޕ‬Studies on hot atom chemical behavior of energetic ions in solids (XXI)-Elucidation of oxidation temperature effect on deuterium retention in the oxide layer of stainlesssteelSUZUKI, M. 1, SUZUKI, S. 1, KOBAYASHI, M. 1, KURATA, R. 1, WANG, W. 1, HAYASHI, T. 2,
YAMANISHI, T. 2, OYA, Y. 1, OKUNO, K. 1
− 18 −

1A04

ᅛయ࡟࠾ࡅࡿ㧗࢚ࢿࣝࢠ࣮࢖࢜ࣥࡢ࣍ࢵࢺ࢔ࢺ࣒໬Ꮫⓗ㐣⛬࡟㛵ࡍࡿ◊✲(XXII)
㸫14 MeV ୰ᛶᏊ↷ᑕࡋࡓ࢔࣑ࣝࣥ㓟ࣜࢳ࣒࢘୰࡟⏕ᡂࡋࡓ↷ᑕḞ㝗ᾘ⁛ᣲື㸫(㟼ᒸ኱⌮࣭ᨺᑕ◊ 1ࠊཎᏊຊᶵᵓ 2)‫⏣℈ۑ‬᫂බᏊ 1ࠊ㕥ᮌ⚈Ꮚ 1ࠊᑠᯘ ┿ 1ࠊ಴⏣⌮Ụ 1ࠊ
⋤ ୓ᬒ 1ࠊⴠྜㅬኴ㑻 2ࠊ௒㔝 ຊ 2ࠊ኱▮ᜤஂ 1ࠊዟ㔝೺஧ 1

Intensity / arb.unit࠙⥴ゝࠚ㔜Ỉ⣲(D)ཬࡧࢺࣜࢳ࣒࢘(T)ࢆ⇞ᩱ࡜ࡍࡿ D-T ᰾⼥ྜ⅔࡟࠾࠸࡚ࠊ⇞ᩱ࡜࡞ࡿࢺࣜ
ࢳ࣒࢘ࡣࠊ6/L QĮ 7 ཬࡧ 7/L QQ¶Į 7 ࡢ᰾཯ᛂ࡟ࡼࡾ⏕ᡂࡍࡿࡇ࡜ࡀ⪃࠼ࡽࢀ࡚࠾ࡾࠊࣈࣛࣥ
ࢣࢵࢺᮦᩱ࡟ࡣᅛయࣜࢳ࣒࢘㓟໬≀ࡢᑟධࡀ᳨ウࡉࢀ࡚࠸ࡿࠋࢺࣜࢳ࣒࢘ࡢຠ⋡ⓗ࡞ᅇ཰ᢏ⾡☜❧ࡢほⅬ࠿ࡽࠊᅛయࣜࢳ࣒࢘㓟໬≀୰࡟࠾ࡅࡿࢺࣜࢳ࣒࢘ࡢ໬Ꮫⓗᣲືࡢゎ᫂ࡀ㔜せ࡜࡞ࡿࠋࡲࡓࠊD-T ᰾⼥ྜ཯ᛂ࡛⏕ᡂࡍࡿ 14 MeV ୰ᛶᏊ࡟ࡼࡾ⏕ᡂࡋࡓḞ㝗࡟ࠊࢺࣜࢳ࣒࢘ࡀ
ᤕᤊࡉࢀࡿࡇ࡜ࡀ⪃࠼ࡽࢀࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣࠊ୕ඖ⣔ᅛయࢺࣜࢳ࣒࢘ቑṪೃ⿵ᮦ୰࡛ࠊ
໬ᏛⓗᏳᐃᛶࡀ㧗ࡃࠊ໬Ꮫⓗ࡞どⅬ࠿ࡽᇶ♏ⓗ࡞▱ぢࢆᚓࡿࡢ࡟㐺ࡋ࡚࠸ࡿ࢔࣑ࣝࣥ㓟ࣜࢳ࣒࢘(LiAlO2)࡟ᑐࡋࠊ14 MeV ୰ᛶᏊ↷ᑕࢆ⾜࠸ࠊヨᩱ୰࡟⏕ᡂࡋࡓ↷ᑕḞ㝗ࡢᾘ⁛࡟క࠺ࢺࣜࢳ࣒࢘ᨺฟᣲືࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵࠊ㟁Ꮚࢫࣆࣥඹ㬆(ESR) ᐃἲ࡟ࡼࡾ↷ᑕḞ㝗ᾘ⁛ᣲືࡢ㏿ᗘㄽⓗ࡞ゎ᫂ࢆ⾜ࡗࡓࠋࡲࡓࠊ↷ᑕḞ㝗⏕ᡂ㐣⛬ࡢ㐪࠸ࡀཬࡰࡍᣲືࡢኚ໬ࢆホ౯ࡍࡿࡓࡵࠊ⇕୰ᛶᏊ↷ᑕ࡟࠾ࡅࡿ⤖ᯝ࡜ẚ㍑᳨ウࡋࡓࠋ࠙ᐇ㦂ࠚヨᩱ࡜ࡋ࡚ LiAlO2 ࣌ࣈࣝ(0.5 mmȭ)ࢆ⏝࠸ࠊHe ῶᅽୗ࡟࠾࠸࡚ 1173 K ࡛ 3 ᫬㛫ࡢຍ⇕ฎ⌮ᚋࠊ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓࡢ᰾⼥ྜ୰ᛶᏊ※᪋タ࡟࡚ࠊ14 MeV ୰ᛶᏊ↷ᑕࢆ୰ᛶᏊ
ࣇ࢚ࣝࣥࢫ 6.2×1014 n cm-2 ࡛⾜ࡗࡓࠋ↷ᑕヨᩱࢆ ESR ᐃࢭࣝ࡟┿✵ᑒධࡋࡓᚋࠊ➼᫬ຍ⇕࢔ࢽ࣮ࣜࣥࢢᐇ㦂࡜ࡋ࡚ࠊ ᗘ㡿ᇦ 297-773 Kࠊ ᗘ㛫㝸 25 K ࡜ࡋࠊྛ ᗘ࡛ 5 ศ㛫ຍ⇕ࡋࡓࠋྛ ᗘ࡟࠾ࡅࡿ࢔ࢽ࣮ࣜࣥࢢᚋࠊᾮయ❅⣲ ᗘ࡛ ESR ᐃࢆ⾜ࡗࡓࠋḟ࡟ࠊ➼ ຍ⇕࢔ࢽ࣮ࣜࣥࢢᐇ㦂࡜ࡋ࡚ࠊ➼᫬ຍ⇕ᐇ㦂ࡢ⤖ᯝࡼࡾỴᐃࡋࡓ↷ᑕḞ㝗ᾘ⁛ ᗘ㡿ᇦ 400-600 K
ࡢ୰ࡢ 5 Ⅼ࡛᭱኱ 8 ᫬㛫ຍ⇕ࡋࠊྛ࢔ࢽ࣮ࣜࣥࢢ᫬㛫࡛ࡢຍ⇕ᚋ࡟ ESR ᐃࢆᾮయ❅⣲ ᗘ࡟࡚⾜ࡗࡓࠋ
࠙⤖ᯝ࣭⪃ᐹࠚᅗ࡟ 14 MeV ୰ᛶᏊ↷ᑕ๓ᚋ࡟࠾ࡅࡿ LiAlO2 ࡢ ESR ࢫ࣌ࢡࢺࣝࢆ♧ࡍࠋESRࢫ࣌ࢡࢺࣝ࠿ࡽࠊ↷ᑕヨᩱ୰࡟ࠊ㓟⣲✵Ꮝ࡟㟁Ꮚࡀ୍ࡘᤕᤊࡉࢀࡓ≧ែࡢ F+-centerࠊ㓟⣲ṇᏍ୰ᚰ࡛࠶ࡿ O--center ཬࡧ O2--center ࡞࡝ࡢ↷ᑕḞ㝗ࡢ⏕ᡂࡀ☜ㄆࡉࢀࡓ[1,2]ࠋ➼᫬ຍ⇕࢔ࢽ࣮ࣜࣥࢢᐇ㦂ࡢ⤖ᯝࠊ300-500 K ࡛ F+-center ࡜
2.0
O--center ࡀ෌⤖ྜ㐣⛬࡟ࡼࡾᾘ⁛ࡋࠊࡑࢀ࡜ྠ᫬࡟ࠊ 1.5
After irr.
+
Before irr.
F -center ࡀືࡁࡸࡍࡃ࡞ࡿࡇ࡜࡟ࡼࡾ F-center 㞟ྜ
1.0 O--centerయ(FA)ࡢᡂ㛗ࡀ㐍⾜ࡋࡓࠋ500 K ௨ୖࡢ ᗘ㡿ᇦ࡛
0.5
+
0.0
ࡣ FA ཬࡧ O2 -center ࡀࡑࢀࡒࢀ F -center ཬࡧ-0.5
O -center ࡟⇕ศゎࡋࠊ෌⤖ྜ㐣⛬ࢆ⤒࡚ᾘ⁛࡟⮳ࡿ
+-1.0࡜⪃࠼ࡽࢀࡓࠋࡲࡓࠊF -center ࡟ᤕᤊࡉࢀࡓࢺࣜࢳ
O2--center-1.5+
࣒࢘ࡣ T ࡢ≧ែ࡛ࠊO -center ཬࡧ O2 -center ࡟ᤕᤊ
F -center-2.0 2.10
+
2.05
2.00
1.95
1.90
1.85
ࡉࢀࡓࢺࣜࢳ࣒࢘ࡣ T ࡢ≧ែ࡛Ꮡᅾࡍࡿࡇ࡜ࡀศ
g-value / ࠿ࡗ࡚࠾ࡾ[3]ࠊ↷ᑕḞ㝗ࡢᾘ⁛࡟క࠺ࢺࣜࢳ࣒࢘ࡢ
໬Ꮫ≧ែኚ໬࣭⛣⾜㐣⛬ࡢࣔࢹࣝ໬ࢆ⾜ࡗࡓࠋᅗ 14 MeV ୰ᛶᏊ↷ᑕࡋࡓ LiAlO2 ࠾ࡼࡧ[1] P. Vadja and F. Beuneu, Phys. Rev. B,53, 5335 (1996).
[2] K. Moritani, I. Takagi and H. Moriyama, J. Nucl. Mater., 325,169(2004).
[3] K. Okuno et al., J, Nucl. Mater., 138, 32 (1986).

ᮍ↷ᑕヨᩱࡢ ESR ࢫ࣌ࢡࢺࣝ

Studies on hot atom chemical behavior of energetic ions in solids (XXII)-Annihilation behavior ofirradiation defects generated in 14 MeV neutron-irradiated lithium
HAMADA, A., SUZUKI, S., KOBAYASHI, M., KURATA, R., WANG, W., OCHIAI, K., KONNO, C.,
OYA, Y., OKUNO, K.
− 19 −

1A05

FePSe3 න⚿᥏ߦ߅ߌࠆǫ✢శ㊂ሶߦࠃࠆ㔚⏛ᵄ⺃⿠ㅘ᣿ൻ⃻⽎ߩታ㛎⊛ᬌ⸽ ାᎺᄢ㒮ᢎ⢒㧝㧘ାᎺᄢᢎ⢒㧞  ٤ਛ᪯ᖗ㧝㧘㋈ᧁኡਯ㧞㧘᳗↰૫ᄹሶ㧝㧘ખ␹సᒾ㧝㧘᧛᧻ਭ๺㧞‫ޤߦ߼ߓߪޣ‬㔚⏛ᵄ⺃⿠ㅘ᣿ൻ⃻⽎㧔EIT㧕ߣߪ‫ޔ‬㊂ሶ⁁ᘒߩ㊀ߨวࠊߖߣ㊂ሶᐓᷤࠍ೑↪ߒߡ‫ޔ‬౒㡆⊛ߦๆ෼ߐࠇࠆߴ߈㔚⏛ᵄ߇‫߇⾰‛߽߆ߚ޽ޔ‬ㅘ᣿ߦߥߞߚ߆ߩࠃ߁ߦ‛⾰ࠍㅘㆊߔࠆ⃻⽎ߢ޽ࠆ‫ࠍ⽎⃻ߩߎޕ‬೑↪ߔࠆߎߣߦࠃߞߡ‫ޔ‬ᓥ᧪࡟࡯ࠩ࡯ߦਇนᰳߣߐࠇߡ޿ߚ෻ォಽᏓࠍᔅⷐ
ߣߒߥ޿࡟࡯ࠩ࡯⊒ᝄ߇น⢻ߣߥࠅ‫߇⽎⃻ߩߎߦࠄߐޔ‬ǫ✢ߢ⏕⹺ߢ߈ࠇ߫‫ޔ‬ǫ✢࡟࡯ࠩ࡯ߩ㐿⊒߇น⢻ߦߥࠆ߆߽ߒࠇߥ޿‫⎇ᧄޕ‬ⓥߢߪ EIT ߣ๭߫ࠇࠆ⃻⽎ࠍǫ✢ߢᬌ⸽ߢ߈ࠆ♽ࠍតߒ಴ߔߎߣ߇⋡⊛ߢ޽ࠆ‫ߩߘޕ‬୥⵬ߣߒߡ‫ޔ‬ታ㛎ቶߢวᚑน⢻ߥ FePSe3 ߩන⚿᥏ߩวᚑࠍ⹜ߺ‫ޔ‬ߐࠄߦวᚑߒߡ಴᧪ߚ⚿᥏ࠍๆ෼૕ߦ↪޿ࠆߎߣߦࠃߞߡ‫౒ࠕ࠙ࡃࠬࡔޔ‬㡆ๆ෼ߣḰ૏੤Ꮕ
㧔level crossing㧕ߩᚻᴺࠍ૶ߞߡ㧘EIT ߩᬌ⸽ታ㛎ࠍ⹜ߺߚ‫ޕ‬‫ޣ‬ታ 㛎‫ޤ‬Fe‫ޔ‬P‫ޔ‬Se ߩ☳ᧃࠍൻቇ㊂⺰㊂ߪ߆ࠅߣࠅ‫੃࠙ࡁࡔޔ‬㋬ࠍ↪޿ߡࠃߊᷙวߒ‫ޔ‬วᚑߩ㓙ߩ㜞᷷ߦ⠴߃ࠆߎߣߩ಴᧪ࠆࡃࠗࠦ࡯࡞ࠟ࡜ࠬߦ⌀ⓨኽ౉ߒߚ‫ߩߘޕ‬ᓟ㔚᳇Ἱߢ⚂㧝ࡩ᦬㑆‫ޔ‬840͠ߢ὾ᚑߒߚ‫ޕ‬಄ළߪ 1 ᣣ 40͠ߕߟ⸳ቯ᷷ᐲࠍਅߍߡࠁߊߎߣߦࠃߞߡⴕߞߚ‫ޕ‬ర⚛ಽᨆ‫ޔ‬X ✢᭴ㅧ⸃ᨆࠍⴕ߁ߣߣ߽ߦ‫↢ޔ‬ᚑ‛ࠍๆ෼૕ߣߒߡ⒳‫ߩޘ‬᷷ᐲߢࡔࠬࡃ࠙ࠕല
ᨐߩ᷹ቯࠍⴕߞߚ‫ޕ‬0‫⚿ޣ‬ᨐ߅ࠃ߮⠨ኤ‫ޤ‬ฝ࿑ 1,2 ߪ౒ߦ FePSe3 ߩ 27K
ߦ߅ߌࠆࡔࠬࡃ࠙ࠕ࡮ࠬࡍࠢ࠻࡞ߢ޽ࠆ‫ޕ‬ᄖㇱ⏛⏛ᕈ૕ߣߥࠆ߇‫ߣࠇߘޔ‬หᤨߦ‫ߌ߆⷗ޔ‬਄ Q.S.߇
ᄢ߈ߊᄌൻߒߡ޿ࠆ߆ߩࠃ߁ߥళ୥߇⷗ࠄࠇࠆ‫ޕ‬

2
4

FePSe3 ߪ 107K ઃㄭߢ⏛᳇⋧ォ⒖ࠍ⿠ߎߒ෻ᒝ

Absorption (%)႐(500mT)ߩሽ࿷ਅߢ᷹ቯߐࠇߚ‫ޕ‬

6ߘߩߚ߼వⴕ⎇ⓥ㧔ᣢႎ‫ ޔ‬ᐕ᡼኿ൻቇ⸛⺰ળ㧕ߢߪ‫ޔ‬᭴ㅧ⋧ォ⒖߽⿠ߎߒߡ޿ࠆߩߢߪߥ޿߆‫ޔ‬ߣ޿߁ ᔨ߇ᜬߚࠇ‫߇ࠇߘޔ‬ේ࿃ߢ EIT ߇᷹ⷰߢ

-6

-4

࿑㧝

߈ߥ޿߽ߩߣᕁࠊࠇߡ޿ߚ‫ޕ‬-2

0v (mm/s)2

4

6

FePSe3(27K,500mT)⸃ᨆ㧝ߒ߆ߒߘߩᓟߩ⎇ⓥ߆ࠄ‫ߩߎޔ‬໧㗴߇᭴ㅧ⋧ォ
0⒖ߦࠃࠆ߽ߩߢߪߥߊ‫⸃࡞࠻ࠢࡍࠬޔ‬ᨆߦౝ࿷ߔ

ᤋߐߖߚߣߎࠈ‫ޔ‬࿑ 1 ߩࠃ߁ߦ EIT ߦࠃࠆ߽ߩߣ
ᕁࠊࠇࠆᄢ߈ߥࡒࠬࡈࠖ࠶࠻߇⿠ߎߞߚ‫ޕ‬

24ߩ࠺࡯࠲߆ࠄᄖᝌߒߚ I.S.߿ Q.S.ߩ୯ࠍ⸃ᨆߦ෻

Absorption (%)ࠆ໧㗴ߣ⠨߃ࠄࠇߚߩߢ‫ޔ‬㜞᷷ㇱಽ(110K㨪300K)

ߩᓸᅱߥ᭴ㅧࠍౣ⃻ߒߡ޿ߥ޿ߚ߼‫࡟ࡉ࠳᧪ᧄޔ‬6ߐࠄߦ‫ޔ‬࿑ 1 ߩࡈࠖ࠶࠹ࠖࡦࠣߪࡇ࡯ࠢవ┵ㇱ࠶࠻ߢ޽ࠆߪߕߩࡇ࡯ࠢߩ৻ᣇߦ‫ޔ‬EIT ߦࠃࠆ’ๆ
-6-4

෼ߩᰳ៊’ࠍ઒ቯߒߚߣߎࠈ‫ޔ‬࿑㧞ߩࠃ߁ߦ㕖Ᏹߦࡈࠖ࠶࠻߇ะ਄ߒߚ‫ޕ‬

-2

0

࿑㧞

4

FePSe3(27K,500mT)⸃ᨆ㧞⃻࿷‫ޔ‬࿑ 2 ߩࠃ߁ߥ⸃ᨆߩᅷᒰᕈ‫ޔ㉼⸃ޔ‬෸߮ᄖㇱ⏛႐ߩᓇ㗀ࠍ⹦ߒߊ⷗ࠆߚ߼ߩ᷹ቯࠍ⛮⛯ਛߢ޽ࠆ‫ޕ‬

A proof-of-principle experiment of EIT with gamma radiation in FePSe3 single crystal
NAKAJO, S., SUZUKI, H., NAGATA, K., NAKAGAMI, K., MURAMATSU, H.
− 20 −

2v (mm/s)6715 ߩ 7 ࡔࠬࡃ࠙ࠕࠬࡍࠢ࠻࡞ߦࠃࠆ⎇ⓥ

1A06ේሶജᯏ᭴ ‫᧲ޔ‬ർᄢ࡮ᄙర⎇  ٤ᱜᧁାⴕ ‫ޔ‬ਛ↰ᱜ⟤ ‫⿒ޔ‬ၳశ㓶 ‫ޔ‬⨹੗ᐽᄦ ‫ޔ‬ਛ᧛ᓆᄦ ‫ޔ‬૒⮮ୃᓆ +PVGPUKV[ =?

‫ ޤߦ߼ߓߪޣ‬U-238 ࡔࠬࡃ࠙ࠕಽశᴺߪ Ig=0‫ޔ‬Ie=2 ߩㆫ⒖ǫ✢ࠍ೑↪ߒߡ޿ࠆߚ߼‫⇣ޔ‬ᕈ૕ࠪࡈ࠻߆ࠄߪ᦭ലߥᖱႎ߇ᓧࠄࠇߥ޿߇‫ޔ‬྾ᭂ⋧੕૞↪߅ࠃ߮⏛᳇⋧੕૞↪߆ࠄߩ᦭↪ߥൻቇ⊛ᖱႎ߇ᦼᓙߐࠇࠆ‫ޕ‬30.8K ߦ෻ᒝ⏛ᕈォ⒖᷷ᐲࠍᜬߟ UO2 ߢߪࡔࠬࡃ࠙ࠕࠬࡍࠢ࠻࡞ߩ
᷷ᐲᄌൻ߆ࠄ෻ᒝ⏛ᕈ⁁ᘒߩౝㇱ⏛႐ࠍ᷹ⷰߔࠆߎߣ߇ߢ߈ߚ 1)‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬U ᩭߦߟ޿ߡ᭴ㅧኻ⒓ᕈ߇ૐ޿ߚ߼྾ᭂಽⵚ߇ᦼᓙߐࠇ‫ ߦࠄߐޔ‬55K ߦ߅޿ߡ෻ᒝ⏛ᕈォ⒖ࠍߔࠆ㉄ൻ⎫ൻ࠙࡜ࡦ UOS ߦߟ޿ߡ‫ࠕ࠙ࡃࠬࡔޔ‬ಽశ᷹ቯߦࠃࠅ U ߩൻቇ⊛ᖱႎࠍᓧࠆߎߣࠍ⹜ߺߚ‫ޕ‬
UOS ߪᱜᣇ᥏ߢ‫ޔ‬‫ޣ‬ታ㛎‫ޤ‬UOS ߪ UO2 ࠍ H2S ߣ 1273K ߦ߅޿ߡ 1 ᤨ㑆෻ᔕߐߖߡ⺞⵾ߒߚ‫ޕ‬
2)
U ߦኻߒߡ S ߇㧡㈩૏‫ޔ‬O ߇㧠㈩૏ߒߚ᭴ㅧࠍߣࠆ ‫࠻࠶࠲ࠬࠝࠗ࡜ࠢޕ‬ౝߦ߅޿ߡ‫ޔ‬He ಄ಓᯏ㧔࠳ࠗࠠࡦ␠⵾ CRYOTEC㧕ߦࠃࠅ✢Ḯ‫⹜ޔ‬ᢱߣ߽ߦ಄ළߒߚ‫✢ޕ‬Ḯߪ Pu-242(0.5g‫ޔ‬70MBq)
ߩੑ㉄ൻ‛ߢ‫ޔ‬Pu-242㧔ඨᷫᦼ 3.733x105y㧕߆ࠄߩ 44.9keV ࡔࠬࡃ࠙ࠕǫ✢ߩ᷹ቯߪ‫ޔ‬Pu-241㧔ඨᷫᦼ 14.35y㧕ߩᆷᩭ⒳ߢ޽ࠆ Am-241 ߆ࠄߩ 59.5keVǫ✢ࠍ Ge ᬌ಴ེߦࠃߞߡಽ೎ߒߡ
ⴕߞߚ‫✢ޕ‬Ḯߪ Wissel ␠⵾ MDU-1200 ߦࠃࠅᱜᒏᵄᒻߢ㚟േߒ‫ޔ‬ㅦᐲᩞᱜߪ MVC-450 ࡟࡯ࠩ࡯ࠪࠬ࠹ࡓߦࠃࠅⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ޤ‬᷹ቯߪ⚂ 20K ߆ࠄ 5K ೞߺߢ෻ᒝ⏛ᕈ᷷ᐲ㧔55K㧕ࠍ⿧߃ߡⴕߞߚ‫ޕ‬࿑ߦ␜ߒߚࠃ߁
ߦ‫ߩࠇߕ޿ޔ‬᷷ᐲߩࠬࡍࠢ࠻࡞ߦ߽㧞ߟߩ✢᏷ߩᐢ޿ࡇ࡯ࠢ߇᷹ⷰߐࠇ‫ޔ‬55K ࠍႺ⇇ߦߒߚᄢ߈ߥ✢ᒻߩᄌൻߪ⷗ࠄࠇߥ߆ߞߚ‫⏛ޕ‬᳇ಽⵚࠍ⠨ᘦߒߥ޿ߢ྾ᭂಽⵚߩߺߩࠬࡍࠢ࠻࡞ߣ
ߒߡ⸃ᨆߔࠆߣ྾ᭂಽⵚ e2qQ/4 ߣߒߡ⚂-40mm/s ߩ୯߇‫ߩࠇߕ޿ޔ‬᷹ቯ᷷ᐲߢ߽ᓧࠄࠇߚ‫ޕ‬࿑ਛߩታ✢ߪ‫⸃ߩߘޔ‬ᨆ✢ߢ޽ࠆ‫ޕ‬U ᩭ๟࿐ߩ᭴ㅧ߆ࠄ੍ᗐߐࠇࠆᄢ
߈ߥ྾ᭂಽⵚ߇᷹ⷰߐࠇߚ৻ᣇ‫ޔ‬⏛᳇ಽⵚߪᄢ߈ߥነਈࠍߒߥ޿
ࠃ߁ߢ޽ࠆ‫ޔߪࠇߎޕ‬UOS ߩ⏛᳇᭴ㅧߢߪ‫ޔ‬U ߩ⏛᳇ࡕ࡯ࡔࡦ࠻߇
࿁ォኻ⒓ゲߢ޽ࠆ c ゲߦᴪߞߡ޿
ࠆߎߣߦ⿠࿃ߔࠆ߽ߩ߆߽ߒࠇ

ߥ޿‫ޕ‬


-











References:
1) S. Tsutsui et al., J. Phys. Soc. Jpn.,
67 (1998) 2641.
2) N. Sato et al., J. Alloys Comp.,-265 (1998) 115.



8GNQEKV[ =OOU?





UOS ߩ U-238 ࡔࠬࡃ࠙ࠕࠬࡍࠢ࠻࡞

U-238 Mössbauer spectroscopic study of uranium oxysulfide
MASAKI, N., NAKADA, M., AKABORI, M., ARAI, Y., NAKAMURA, A., SATO, N.
− 21 −

1A07

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       ‫ۑ‬拯⼀㦘ℛᇬኵዐ዇አኌኳ዆ክዐኦᇬ

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ࢿࢳ࣒࢘࡟Ᏻᐃྠ఩యࡀᏑᅾࡋ࡞࠸ࡓࡵࠊ௚ࡢ㔠ᒓ㘒యࡢ◊✲౛࡜ẚ࡭࡚ᑡ࡞࠸ࠋᮏ◊✲ᐊ࡛ࡣࠊ᪂つ㧗㓟໬ࢸࢡࢿࢳ࣒࢘ / ౯㘒యࠊ=%8&>%81୕ᗙ㓄఩Ꮚ&ࡢྜᡂ࡞ࡽࡧ࡟ࣇࣝ࢟ࣕࣛ
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ࡽࡧ࡟཯ᛂᶵᵓ࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋ
࠙ᐇ㦂ࠚ =%8&>࡜✀✀ࡢ࢔ࣝࢣࣥࢆ *㸸* ࡢ๭ྜ࡛Ỉࡲࡓࡣ࢔ࢭࢺࢽࢺࣜࣝ୰࡛ᨩᢾࡋ⁐፹ࢆ㝖ཤࠊᚓࡽࢀࡓ㘒యࢆ෌⤖ᬗ࡟ࡼࡾ⢭〇ࡋࠊ6#  :9#  ༢⤖ᬗᵓ㐀ゎᯒ࡟ࡼࡾ࢟ࣕࣛࢡ
ࢱࣜࢮ࣮ࢩࣙࣥࢆ⾜ࡗࡓࠋࡲࡓ཯ᛂ࣓࢝ࢽࢬ࣒ࢆゎ᫂ࡍࡿࡓࡵࠊࢸࢡࢿࢳ࣒࢘ࡢ *) ಸ㔞ࡢ࢔ࣝࢣࣥ⁐ᾮ࡟ࠊ=%8&>㘒యࢆຍ࠼ࠊ;<<  ࢫ࣌ࢡࢺࣝࡢ ᐃࢆ⾜࠸ࠊ཯ᛂ㏿ᗘᐃᩘ% &࡞ࡽࡧ࡟άᛶ໬࢚ࢿࣝࢠ࣮ࢆ⟬ฟࡋࡓࠋ࠙ ⤖ ᯝ ࡜ ⪃ ᐹ ࠚ =%?@'&>( %?@' 1  % -  *!?@*&  & ࡜%*# ,& =++*> ?+ࡢ཯ᛂ࡟ࡼࡾᚓࡽࢀࡓ-౯㘒యࡢᵓ㐀ࢆ5 *࡟♧ࡍࠋ?@'ࡀࢸࢡࢿࢳ࣒࢘࡟㓄఩ࡋ࡚࠾ࡾࠊ%*# ,& =++*> ?+ࡢ஧㔜⤖ྜࡀ=%?@'&>(ࡢ஧ࡘࡢ㓟⣲ཎᏊ࡜཯ᛂࡋࢪ࣮࢜ࣝࢆ⏕ᡂࡋ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡿࠋࡘࡢ㓄఩❅⣲ཎᏊࡢ࠺ࡕࠊࢱ࣮
࣑ࢼࣝ㓟⣲ཎᏊࡢࢺࣛࣥࢫ࡟࠶ࡿ*:*ࡢ⤖ྜ㊥㞳ࡀ௚ࡢࢸࢡࢿࢳ࣒࢘❅⣲ཎᏊ⤖ྜ㊥㞳࡟ẚ࡭⣙)+ύ㛗࠸ࠋࡇࢀࡣࠊࢱ࣮࣑ࢼࣝ㓟⣲ཎᏊࡢࢺࣛࣥࢫᙳ㡪࡟ࡼࡿࡶࡢ࡜⪃࠼ࡽࢀࡿࠋ
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ᛂࡣ఍ྜᶵᵓࢆక࠺ࡇ࡜ࡀ♧၀ࡉࢀࡓࠋྠᵝࡢ᪉ἲ࡛ࠊ࢔࣑ࣀ㓟ࠊ࢝ࣝ࣎࢟ࢩࣝᇶࠊࣄࢻࣟ
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00ࡢࡳ࡞ࡽࡎ00࡟࠾࠸࡚ࡶ㢮ఝࡋࡓ⤖ᯝࡀᚓࡽࢀࡓࠋ
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                  !"  # $ − 23 −

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加速器質量分析（AMS）セッション
9 月 28 日（月）1A09 〜 1A12：依頼講演

A 会場（国際会議場）

1A13 〜 1A18：一般講演

A 会場（国際会議場）

1A09fárÞæc§u¿Ày,oVX78<B¥{ì¦²O

fárÞæc§"»éi´£! oVXö10Be, 14C, 26Al, 36Cl, 129I ÷!ªb`-,-*!¨Í"ÒºÞ!ÆPYÂ)Á, *##ÒÁ¨ÍöCRNs = Cosmogenic Radio Nuclides÷p#-,{¯NÁÒÁ¨Í"ºÞÀ)â#-uL% ëM,ÒÁ¨Í!Á
¾"Ò![~,K-"u¿Àyzg(¯]zg.Ó ,L"ä×@ECJ:J,uÊ¯|í±g)zh,ãl!
ÒÁ¨Í!Áæ.ÚçÛö/085/(wÎº÷"mÀyÉÏä×,
¡à"u¿ÖAH98.Ü$,&ÒÅuÖ!ÈNÁ,¨Íöin situ CRNs÷')dÂ-,In situ CRNs ! AMS !:J4;>TÖÄ'!
"10Be  26Al ,!·(³c"uÖñ!ðb ê(\óá!x. ,-*!=J:"jÄuÖ!­.ËuvÄ¯]¤U.Ç,ä× +',Qò!¨2?F3J!dÂö¨ôk}eÃï÷)+14C, 36Cl, 129I !¨ÍQ¹ÄÁ-, ¨Í'ºÞg! >GJ6J ,129I .Z,RQ¹ß¶! 129I )u¿Ö! 129I/127I ®" pre-anthropogenic ! T®$©L +%!^"Öñ!¤U(D1Ñ!g)ÐêÄI êÄ«&{zg,Q¹ß¶! 129I "aÑ!D1Ñ!g.Ë ,%D1Ñ"¢¬ºÙqõ  *129I ¸ÑÀ!_ñ.
* ,&!è,!"£- ,fárÞæc§µnÔ-*!oVX"!~töoVX!oVX®÷«&WS!°!ªbsî,fárÞæc§)u¿ÀyN% oVX78<B.ØbnÔ+!)u¿ÀyÌ!cå¼Õ!Ý½. ,,Accelerator Mass Spectrometry and isotope system in earth environment
MATSUZAKI, H.
− 24 −

1A10

ടㅦེ⾰㊂ಽᨆ(AMS)ߦࠃࠆ Cl-36 ߩ᷹ቯߣߘߩᔕ↪╳ᵄᄢ࡮ᔕ↪ടㅦེ ٤╣౏๺‫ ޤߦ߼ߓߪޣ‬㐳ඨᷫᦼᩭ⒳ߩ 36Cl (T1/2=301 kyr)ߪ‫ޔ‬ਥߣߒߡ 2 ᰴቝቮ✢ߣᄢ᳇ਛߩ 40Ar ߣߩᩭ⎕⎈෻ᔕߦࠃߞߡ↢ᚑߐࠇࠆ‫⃿ోޕ‬ᐔဋ↢ᚑ₸ߪ~20 atoms mí2 sí1 ⒟ᐲߣ⷗Ⓧ߽ࠄࠇߡ޿ࠆ
(J. Masarik, 1999)‫ޕ‬ᚑጀ࿤߅ࠃ߮ኻᵹ࿤ߢ↢ᚑߐࠇߚ 36Cl ߪᲧセ⊛⍴ᤨ㑆ߢࠃߊᷙวߒ‫ޔ‬ᶏႮ⿠ḮߩႮ⚛ߣߣ߽ߦḨᕈ޽ࠆ޿ߪੇᕈ㒠ਅ‛ߣߒߡ࿾⴫ߦ㒠ਅߔࠆ‫⥄ޕ‬ὼ⇇ߩ 36Cl/Cl ห૏૕Ყߪ 10-13 ߆ࠄ 10-14 ⒟ᐲߢ޽ࠅ‫ޔ‬ᶏ᳓ߢߪ 10-15 એਅߢ޽ࠆ‫ޕ‬36Cl ߪਛᕈሶ᝝₪෻ᔕ 35Cl(n, J)36Cl╬ߦࠃࠅ‫ޔ‬ᩭታ㛎߿ේሶജ㑐ㅪᣉ⸳ߥߤߢ߽↢ᚑߐࠇࠆ‫ ߦ․ޕ‬1950 ᐕઍߩᶏᵗᩭታ㛎ߦࠃࠅ‫ޔ‬
36
Cl ߪᄢ㊂ߦ↢ᚑߐࠇߡ޿ࠆ(H. A. Synal, 1990)‫ޕ‬Ⴎ⚛ߪᶏᵗ߿㒽ၞߦᐢߊಽᏓߒߡ߅ࠅ‫ޔ‬36Cl
ߪ㐳ඨᷫᦼᩭ⒳ߩ᦭↪ߥⅣႺ࠻࡟࡯ࠨ࡯ߣߒߡ‫ߩߘޔ‬೑↪߇ᕆㅦߦㅴዷߒߟߟ޽ࠆ‫ޕ‬‫ޣ‬36Cl-AMS ᷹ቯ‫ޤ‬ടㅦེ⾰㊂ಽᨆ(AMS)ߦࠃࠆ 36Cl ߩ᷹ቯߢߪ‫ޔ‬ห㊀૕ߢ޽ࠆ 36S (ሽ࿷ᐲ0.02%)߇ᅹኂ࿃ሶߣߥࠆߚ߼‫⎫ޔ‬㤛ߩᄙ޿⹜ᢱߪ⹜ᢱಣℂߩᲑ㓏ߢ⎫㤛ࠍߢ߈ࠆ㒢ࠅขࠅ㒰ߊᔅⷐ߇޽ࠆ‫ޕ‬᷹ቯ↪⹜ᢱߣߒߡߪ‫ޔ‬1㨪5 mg ⒟ᐲߩ AgCl ߇↪޿ࠄࠇࠆ‫ޕ‬36Cl ߩ AMS ᷹ቯߢߪ‫ޔ‬36S ߣߩಽ㔌⼂೎ߩὑߦ‫ ߦ⊛⥸৻ޔ‬5 MV એ਄ߩ࠲ࡦ࠺ࡓ㕒㔚ടㅦེ߇↪޿ࠄࠇࠆ‫ޕ‬਎⇇ߢߪ 10 ᣉ⸳⒟ᐲ߇ 36Cl ߩ AMS ᷹ቯࠍታᣉߒߡ߅ࠅ‫ޔ‬࿖ౝߢߪ᧲੩ᄢቇ MALT (5MV)ߣ╳ᵄᄢቇ AMS ࠪࠬ࠹ࡓ (12MV)ߦ߅޿ߡ 36Cl ߩ AMS ᷹ቯ߇น⢻ߣߥߞߡ޿ࠆ‫᧲ޕ‬੩ᄢቇ MALTߢߪ‫ࠬࠟޔ‬లႯဳ㔚⏛⍹ࠍ↪޿ߡ AMS ᷹ቯࠍታᣉߒߡ߅ࠅ (T. Aze, 2007)‫╳ޔ‬ᵄᄢቇ AMS ࠪࠬ࠹ࡓߢߪ‫ޔ‬36Cl ࠍ 100 MeV ߹ߢടㅦߒ‫ࠬࠟޔ‬෸߮ඨዉ૕ᬌ಴ེ߆ࠄߥࠆ'((ᬌ಴ེߦࠃࠅ
⸘᷹ࠍ߅ߎߥߞߡ޿ࠆ (K. Sasa, 2007)‫╳ޕ‬ᵄᄢቇ AMS ࠪࠬ࠹ࡓߩ 36Cl ᬌ಴ᗵᐲߪ‫ޔ‬36Cl/Clห૏૕Ყߢ㨪10-15 ߢ޽ࠅ‫ޔ‬᷹ቯ♖ᐲߪ 3%ߣߥߞߡ޿ࠆ‫ޕ‬2008 ᐕߦ 36Cl ᷹ቯ߇น⢻ߥ਎⇇ߩ 8ᣉ⸳߇ෳടߒߡ‫ޔ‬36Cl-AMS ᷹ቯߩ⎇ⓥቶ㑆Ყセᬌቯ߇ታᣉߐࠇߚ (S. Merchel, 2009)‫ޕ‬ฦ AMS
ᣉ⸳ߩ 36Cl-AMS ᷹ቯߩ⃻ᴫߣ⎇ⓥቶ㑆Ყセᬌቯߩ⚿ᨐߦߟ޿ߡ⚫੺ߔࠆ‫ޕ‬‫ޣ‬36Cl-AMS ߩᔕ↪⎇ⓥ‫ޤ‬36Cl ߪ‫ޔ‬ⅣႺ࠻࡟࡯ࠨ࡯ߣߒߡ࿾⃿ⅣႺ⑼ቇಽ㊁ߢߩᔕ↪⎇ⓥ߇ᵴ
⊒ߦㅴ߼ࠄࠇߡ޿ࠆ‫ޕ‬࿾ਅ᳓߿࿯ფ‫ޔ‬ᄢ᳇ᓴⅣߩ࠻࡟࡯ࠨ࡯ߣߒߡߩ⎇ⓥ߿ᩭᑄ᫈‛㑐ㅪ⎇ⓥߦ߽ᔕ↪ߐࠇߡ޿ࠆ‫ޕ‬࿾ਅ᳓ߩṛ⇐ᤨ㑆ߩផቯߢߪ‫ޔ‬㐳ඨᷫᦼࠍ೑↪ߒߡ㕖Ᏹߦⷙᮨߩᄢ
߈ߥᏪ᳓ጀߦ߅ߌࠆᢙචਁᐕࠝ࡯࠳࡯ߩ࿾ਅ᳓ߩᐕઍ᷹ቯߦ↪޿ࠄࠇߡ߈ߚ (H. W. Bentley,1986 and Y. Mahara, 2007)‫ޔߚ߹ޕ‬3H ߩઍᦧߣߒߡ‫ޔ‬ᩭታ㛎⿠Ḯࡄ࡞ࠬࠍ೑↪ߒߚᢙචᐕࠝ࡯
࠳࡯ߩᣂߒ޿࿾ਅ᳓߳ߩㆡ↪߽ㅴዷߒߡ޿ࠆ(Y. Tosaki, 2008)‫ޕ‬36Cl ߪ⍹Ἧጤߩṁ㘩ㅦᐲߩቯ㊂߿㓓⍹ߩቝቮ✢ᾖ኿ᐕઍ‫⪭ޔ‬ਅᐕઍߩផቯߦ߽೑↪ߐࠇߡ޿ࠆ‫ޕ‬᳖ᐥࠦࠕ⎇ⓥߦ߅޿ߡߪ‫ޔ‬
36
Cl ߩ᡼኿უᄌࠍ೑↪ߒߚࠦࠕᐕઍߩផቯ෸߮ㆊ෰ߩ᳇୥ᄌേ߿ቝቮ✢ᄌേߩ⎇ⓥߦ߽ㆡ↪
߇ㅴࠎߢ޿ࠆ‫ޔઁߩߘޕ‬ᐢፉ࡮㐳ፒේ῜ⵍ߫ߊ✢㊂⹏ଔࠪࠬ࠹ࡓ DS-02 ߩᬌ⸽(M. Hoshi, 2008)
߿ JCO ⥃⇇੐᡿ߦ߅ߌࠆਛᕈሶ✢㊂ផቯ(R. Seki, 2003)ߥߤߦ߽೑↪ߐࠇߡ޿ࠆ‫ޔߚ߹ޕ‬᡼኿✢⊒↢ᣉ⸳ߩㆤ⭁ࠦࡦࠢ࡝࡯࠻ਛߩ 36Cl ᷹ቯߦࠃࠅ‫⹏࡞ࡌ࡟ࠬࡦ࡜ࠕ࡝ࠢޔ‬ଔ߿ਛᕈሶⓍ▚✢㊂ࠍផቯߔࠆ⹜ߺ߽߅ߎߥࠊࠇߡ޿ࠆ(K. Bessho, 2006)‫ ߩࠄࠇߎޔߪߢ⴫⊒ᧄޕ‬36Cl ࠍ↪޿ߚᔕ↪⎇ⓥ଀ߦߟ޿ߡ߽⚫੺ࠍ߅ߎߥ߁੍ቯߢ޽ࠆ‫ޕ‬╳ᵄᄢቇߩ 36Cl ⎇ⓥߩ৻ㇱߪ‫ޔ‬ᢥㇱ⑼ቇ⋭ේሶജၮ␆ၮ⋚ᚢ⇛⎇ⓥࠗ࠾ࠪࠕ࠹ࠖࡉߦࠃࠅ
ታᣉߐࠇߚ‫ޟ‬ᭂᓸ㊂᡼኿ᕈᩭ⒳ AMS ߦࠃࠆේሶജᣉ⸳ⅣႺࡕ࠾࠲࡝ࡦࠣ⎇ⓥ‫ߩޠ‬ᚑᨐߢ޽ࠆ‫ޕ‬Accelerator mass spectrometry of 36Cl and its applications
SASA, K.
− 25 −

1A11

I-129 * AMS qÏ&*øw6,öwĆĎ-*¶ûĚļ÷ Íļª  ÌÎ°Ĥ cģĖ÷f Ĳ§ă]Ē Î©
ã[ +3) PAē-129ŃzéÊŇ1570 W­ń+åíÒċ&$ă7:9õ%4Ę&ÞZ* Xe &*¶5 U *ĝþÒqħ(')68Ö´Ķ(7ù¹:$9äß
Z%+ 129I &PAēŃ127Iń+V)è8*Ý+/0VŃ129I /127I ÝŇ1.5x10-12ń)h:$9&¿:9*3äß7č9Ń}+čóZ)ĸ37:
9ń&Ä 129I gĕ:129I/127I Ý+zéÊ)²é¥9%ĬÃZ* 129I/127IÝ=Úć)ê9&)68PAēäß7qĽ:­a=¿%91*Òċ+_ªÿ)4ù¹:$8Ò ŀ5{tÆīŃmo÷Æīń*Čk)68øZ)
u<"$9*3129I +öw6,øĈ*Ĩð7Ğ¼:$9 bsº +Á¤wqÏá=ûøĬÃZ* 129I *´ĶqÏ=Ĥ"ĥ¦
('TNSŁĬÃ)#$+ê%$4ĝñü*i)İï¯+ÕpĻübY%"%AMS *qÏ)ĳĬÃ7*PAē*qĽá=Õĩ$qÏ=Ĥ"ŀ AMS û*FUEHJŃAgI àÜń=e¹93)1+ĬÃ7*PAē*qĽ=ÕĩPAēï¯*ŁłßĬÃ)#$+Ā¾ì»pá%PAē=qĽ±
PAwķ=u AgI àÜ=e¹dĬÃŃ('ń)#$+ąğď*Z% 1000)uòÀþPAē=?SCRìæ%JQHMPAēï¯*ê+JQHMì
æ*VĴ=û ICP-MS %qÏÛ8*JQHMìæ)ÇăĶ* I-=DOR?Ń2mgń&$u±łß&Øì»pá%qĽAgI FUEHJ=e¹AMS ê)Ĺ$+
Matsuzaki et al. (2007, 2008))²"
ĔÑ~,ě£  qÏ)Ĺ$+AMS á=û9&)68 129I/127I Ý&$ 5x10-14 Ċ¯1%ê%9&q"*i+Á¤wqÏ684Ņ ņÓ/'¸¯:$9ĬÃ('%+PAē*DOR?U=u9*%Õp¸¯+XĪ*i68+¥
Ġ!9129I/127I Ý&$ 1x10-11Ń|+ï¯&$ 0.01 mBq/kg Ċ¯ń1%ê%ÕĩÅá=ûøĬÃ5öwÿĬÃ*qÏ= Æ öwÿĬÃ&$+PAē=Łï¯)2Yłß5âdÈËr¨*%úp
9&7:7)1:9 129I/129I Ý=êyġāÍ^ĵôā('%½Xė¦ę*ĬÃ%+129I/127I Ý&$ 1.7x10-13 s±*i³7:*i7PAēĢč­a=¿&; 4900 W­s% ":+łß9¦684
(8PAē)¢> âdĉv$&¿1*`*Ń¡©āÄîāęĿāxäı('ń%½ĬÃ)#$4qÏ=Ĥ"*%:7*ĔÑ)#$4Įë)#$4ě£9 øĬÃ&$+=Zµ) 129I *ï¯qÏ=Ĥ"*ĔÑº*Z*
129
I ï¯+0.01 - 180mBq/kg-1 &¬®Đ) 8*!ÍäÌ*mo÷Æīį(')1:9 129I +Łj ) "ÔÐ+Ùn)Þ7PAēàĂ:ĺľ(')â:)u<93ÔÐ*Åý(')Ý. 129I ï¯Ł"1
ç¯q«=ĭ.&;ĥ¦ 10cm bl)/&>'* 129I Ģč$1GBSK
L@R%½Z* 129I =qÏ\Â)68Áp:zéÊĄ3ê
IUF¥(" 131I *ï¯¿=ĤĦÉĘĶm×đ*Ĝ·=Õĩ
Analysis of I-129 by AMS and its application to environmental sciences and geochemistry
MURAMATSU, Y., ITO, E., TOYAMA, C., MATSUZAKI, H.
− 26 −

1A12⠨ฎ⎇ⓥߣ %㧦⃻⁁ߣߎࠇ߆ࠄߩ⺖㗴࿖┙ᱧผ᳃ଶඳ‛㙚 ‫ ࡏ࡜࡮ࠝ࡟ࡄޔ‬ᩣ ‫ޔ‬ฬᄢᐕઍ࠮   ٤੹᧛ፃ㓶 ‫ޔ‬
ဈᧄ⒤ ‫ޔ‬የ፸ᄢ⌀ ‫ޔ‬ች↰૫᮸ ‫੹ޤߦ߼ߓߪޣ‬਎♿ߦ౉ߞߡ 14C ᐕઍᴺߩࡄࡈࠜ࡯ࡑࡦࠬߣ♖ᐲߪᩰᲑߦะ਄ߒ‫ޔ‬⠨ฎቇ߳ߩᔕ↪߇⠨ฎቇ⎇ⓥ⠪ߩਛߦ߽ᐢ߇ࠅߟߟ޽ࠆ‫♖ޕ‬ᐲr㧑㧔὇⚛ᐕઍ឵▚ߢr
%ᐕ㧕ߢߩቯᏱ᷹ቯ߇‫ޔ‬ᐕᢙජⵝ⟎ߩⷙᮨߢ৻⥸⊛ߦⴕࠊࠇࠆࠃ߁ߦߥߞߡ޿ࠆ‫ߢߎߎޕ‬ߪ‫ޔ‬#/5 ᴺߦࠃࠆ 14C ᷹ቯߣ⠨ฎቇ⎇ⓥߩ⃻⁁ࠍዷᦸߒ‫ޔ‬዁᧪ߦะߌߚᣂߚߥ⺖㗴ߦߟ޿ߡ⠨߃ߡߺߚ޿‫ޕ‬‫ޣ‬⠨ฎቇߣ #/5% ᷹ቯ‫ޟޤ‬⠨ฎቇ⎇ⓥߦᣈ޿ߡᦨ߽㊀ⷐ਌ߟᱴߤᦨ⚳ߩ⋡⊛ߣߖࠄࠆࠒ߽
ߩߪ‫⾗ߩߘޔ‬ᢱߩᤨઍ᳿ቯߥࠅ‫ޔߪߩ߁޿ߣޠ‬ᵿ↰⠹૞ߦࠃࠆฎౖ⊛ฬ⪺‫ޡ‬ㅢ⺰⠨ฎቇ‫ޢ‬
㧔1922㧕
ߦ߅ߌࠆ⸒ߢ޽ࠆ߇‫ ߪࠇߎޔ‬14C ᐕઍ᷹ቯᴺ߇⠨ฎቇߦ߅޿ߡᨐߚߒ߁ࠆᓎഀߣน⢻ᕈࠍ␜ߔ߽ߩߢ޽ࠆ‫ޕ‬14C ᐕઍᴺߪ‫ߢ߹ࠇߎޔ‬ਥߦవผᤨઍߩ⠨ฎቇߦ⽸₂ߒߡ߈ߚ‫৻ޕ‬ᣇ‫੹ޔ‬਎♿
ߦ߅ߌࠆ #/5 ᴺߩࡄࡈࠜ࡯ࡑࡦࠬߣ᷹ቯ♖ᐲߩะ਄ߪ‫ޔ‬ᐕઍセᱜᴺߩㅴᱠߣ⋧߹ߞߡᱧผᤨ
ઍࠍ฽߻⎇ⓥߦ߽ᐢ߇ࠅᆎ߼‫ޔ‬ᔕ↪⎇ⓥߪ޽ࠄߚߥᲑ㓏ߦ౉ߞߚߣ⠨߃ࠄࠇࠆ‫ޕ‬‫ޣ‬#/5 ߦࠃࠆ % ᷹ቯߩ⃻⁁‫ޤ‬#/5 ⵝ⟎ࠍ᦭ߔࠆ਎⇇ߩ  ߶ߤߩᣉ⸳ߩ߶ߣࠎߤߢ 14C ᷹ቯ߇ⴕࠊࠇߡ޿ࠆߣផ᷹ߐࠇࠆ‫ޕ‬਄ㅀߒߚࠃ߁ߦ⃻࿷‫♖ޔ‬ᐲr㧑ߢߩቯᏱ᷹ቯ߇‫ޔ‬ᐕ㧞㨪㧟ජⵝ⟎ߩⷙᮨߢ৻⥸⊛ߦⴕࠊࠇ‫৻ޔ‬ㇱߦߪ‫ ޔ‬࿁ߩ⸘ᢙ߇  ߦ㆐ߒታ᷹ߢ 㧑㧔r ὇⚛ᐕߦ⋧ᒰ㧕ߩౣ⃻ᕈࠍታ⃻ߒߡ޿ࠆ‫⹜ޕ‬ᢱ὇⚛㊂ߩᭂዊൻ߽ᄙߊߩ⎇ⓥ⠪߇ขࠅ⚵ࠎߢ޿ࠆ⺖㗴ߢ޽ࠆ‫ޕ‬ㅢᏱߪ㧝OI ߩ὇⚛㊂߇ᮡḰߢ޽ࠆ߇‫ޔ‬OI ߐࠄߦߘࠇએਅߢߩ᷹ቯႎ
๔߽Ⴧടߒߟߟ޽ࠆ‫ޕ‬৻ᣇ‫ޔ‬᷹ቯ୯ߩ⛘ኻ୯ߦߟ޿ߡߪ᷹ቯᯏ㑐㑆ߢ᷹ቯ♖ᐲࠍ⿥߃ࠆ㆑޿߇ߒ߫ߒ߫ႎ๔ߐࠇ
ࠆ‫ޕ‬᷹ቯ୯ߩຠ⾰▤ℂ߇໧ࠊࠇࠆᚲએߢ޽ࠆ߇‫৻ޔ‬ᣇߢ‫ޔ‬࿖㓙⊛ߦᄙᢙߩ᷹ቯᯏ㑐߇ෳടߒߡ౒ㅢߩ⹜ᢱߦߟ޿ߡ೨ಣℂࠍ฽߼ߡ᷹ቯߒ‫⚿ޔ‬ᨐߩᲧセᬌ⸛ࠍⴕߥ߁ขࠅ⚵ߺ߇ⴕࠊࠇߡ
޿ࠆ‫ߩ࠲࡯࠺ޕ‬ା㗬ᕈࠍᲧセ࠴ࠚ࠶ࠢߔࠆߎߣ߇น⢻ߦߥࠅ‫ޔ‬໧㗴߿⺖㗴ࠍ᛽಴ߔࠆ࠴ࡖࡦ
ࠬߣߥࠆ‫ޕ‬Ớᐲߩ⇣ߥࠆⶄᢙߩᮡḰ⹜ᢱߩ⚿ᨐࠍหᤨߦᓧߡ‫ߩ࠲࡯࠺ޔ‬ା㗬ᕈߩ࠴ࠚ࠶ࠢࠍ
ⴕ߁ߎߣߪ‫ޔ‬೑↪⠪஥ߢ߽ⴕߥࠊࠇࠆຠ⾰▤ℂߩ㧝ᣇᴺߢ޽ࠆ‫ޕ‬‫ޣ‬% ᐕઍ᷹ቯߣセᱜᦛ✢‫ޤ‬14C ᐕઍ᷹ቯᴺߢߪ‫ޔ‬᷹ቯߢᓧࠄࠇߚ⹜ᢱߩ 14CỚᐲࠍ‫ޔ‬セᱜᦛ✢㧔ࠠࡖ࡝ࡉ࡟࡯࡚ࠪࡦࠞ࡯ࡉ㧕ߢセᱜߒߡታᐕઍࠍᓧࠆ‫ޕ‬セᱜᦛ✢ߪᐕベᐕઍᴺߢᥲᐕ
ࠍ․ቯߒߚฎᧁ╬ߩᐕベ⾗ᢱࠍ↪޿ߡ‫ ߩߘޔ‬14C Ớᐲࠍ᷹ቯߒߡᓧࠄࠇࠆ‫⃻ޕ‬࿷ർඨ⃿ߦኻߒߡ৻⥸ߦ↪޿ࠄࠇࠆ +PV%CN ߪ‫ޔ‬ㆊ෰  ਁᐕߩ 14C ᐕઍ߿ᄢ᳇ 14C Ớᐲߩᄌേ㧔 ᐕ⋧ᒰߩᄢ᳇Ớᐲߦኻߔࠆ஍Ꮕ୯‫ޔ‬Ǎ14C ࠍਈ߃ࠆ‫ޕ‬ㆊ෰  ᐕߩㇱಽߪ‫ޔ‬᰷☨ߩᧁ᧚ߢ᷹
ࠄࠇߚ࠺࡯࠲‫ࠇߘޔ‬એ೨ߦߟ޿ߡߪࠨࡦࠧ߿ᶏᵗᐕ❋ၸⓍ‛߆ࠄᓧࠄࠇߚ߽ߩߢ޽ࠆ‫ޔ߅ߥޕ‬ᶏᵗߦኻߒߡߪ /CTKPG ߩ࠺࡯࠲࠮࠶࠻߇ᄢ᳇࠺࡯࠲ߣࡕ࠺࡞⸘▚߆ࠄਈ߃ࠄࠇߡ޿ࠆ‫ޕ‬‫ޣ‬セᱜᦛ✢ߣ࿾ၞലᨐ‫ޔ‬ᐕᄌേ‫ޤ‬セᱜᦛ✢ߪ‫ޔ‬ർඨ⃿ߩ▸࿐ߢߪ⛔৻⊛ߦ↪޿ࠆߎߣ߇ߢ
߈ࠆߣ⠨߃ࠄࠇߡ߈ߚ߇‫ޔ‬ᱧඳߦ߅ߌࠆ⎇ⓥ߆ࠄߘߩỚᐲ߇᦭ᗧߦ㧔ᢙච὇⚛ᐕ㧕਄⸥ߩ
+PV%CN ߆ࠄߪߕࠇࠆᤨᦼ߇޽ࠆߎߣ߇್᣿ߒ‫ޔ‬ᣂߚߥขࠅ⚵ߺ߇ᔅⷐߢ޽ࠆߎߣ߇␜ໂߐ
ࠇࠆ‫ޕ‬ㆊ෰㧝ਁᐕߩᄢ᳇ 14C Ớᐲߩᄌേߪ‫ޔ‬࿾⏛᳇ߩ㐳ᦼᄌേߣᄥ㓁ᵴേߦࠃࠆቝቮ✢ᒝᐲ− 27 −

ߩᄌൻߣ⠨߃ࠄࠇߡ޿ࠆ߇‫ޔ‬᳇୥ᄌേߩᓇ㗀߽ࡑࠗ࠽࡯ߥലᨐߣߒߡሽ࿷ߔࠆࠃ߁ߢ޽ࠆ‫ޕ‬ߥ߅‫ ޔ‬ᐕ๟ᦼߩᄥ㓁ᵴേߦࠃࠆỚᐲᄌൻߪ‫⚂ޔ‬㧟̟ߩᝄ᏷ࠍ߽ߞߡ޿ࠆ߇‫ޔ‬セᱜᦛ✢ߢߪ‫ޔ‬ߎ߁ߒߚ⍴๟ᦼߩᄌേߪ㓝ߐࠇߡ޿ࠆ‫ޔߪࠇߘޕ‬+PV%CN ߦ߅޿ߡߪ  ᐕ߹ߚߪ  ᐕߩᐔဋ୯ߣߒߡߩᄢ᳇ 14C Ớᐲߩᄌേ߇ਈ߃ࠄࠇߡ޿ࠆ߆ࠄߢ޽ࠆ‫ޕ‬ㅢᏱߩ♖ᐲߢߩᐕઍ᷹ቯߦ
ߪߎߩᓇ㗀ߪዊߐ޿߇‫੹ޔ‬ᓟ᷹ቯ♖ᐲ߇㜞ߊߥࠆߣ⠨ᘦߒߥߌࠇ߫ߥࠄߥ޿ⷐ⚛ߢ޽ࠆ‫ޕ‬‫ޣ‬㜞♖ᐲ࡮㜞⏕ᐲߩᐕઍ᳿ቯᴺ㧦14C ࠙ࠖࠣ࡞ࡑ࠶࠴ᴺ‫ޤ‬
14

C ᐕઍᴺߩ㧝ߟߩ࠹ࠢ࠾࠶ࠢߣߒߡ YKIINGOCVEJKPI ᴺ߇޽ࠆ‫ޕ‬セᱜᦛ✢ߩᐕᄌൻߩಲಳ

․ᕈ㧙YKIING㧙ࠍ೑↪ߔࠆ߽ߩߢ‫⹜᧚ᧁ߫߃ߣߚޔ‬ᢱߩࠃ߁ߦᢙචᐕߩᐕベጀ߇޽ࠇ߫‫ޔ‬ᐕベߏߣߩ 14C Ớᐲ߇ᥲᐕセᱜᦛ✢ߩ YKIING ߦ৻⥌ߔࠆᐕઍࠍࡌࠗ࠭⛔⸘ߢ⛉ࠅㄟ߻‫᧦ޕ‬ઙࠍㆡಾߦㆬߴ߫‫ޔ‬᷹ቯ⺋Ꮕrᢙᐕ㨪චᢙᐕߢߩᱧᐕઍ᳿ቯ߇น⢻ߢ޽ࠆ‫ޕ‬
14

C ࠙ࠖࠣ࡞ࡑ࠶࠴ᴺߪ +PV%CN ߇  ᐕන૏ߩ࠺࡯࠲ߣߒߡឭଏߐࠇࠆࠃ߁ߦߥߞߚ ᐕએᓟᆭജࠍ⊒ើߒᆎ߼ߚߣ޿߃ࠃ߁‫ޔߜࠊߥߔޕ‬ᐕベᐕઍ߇ਇน⢻ߥᐢ⪲᮸߿ዊ⹜ᢱ㧔ㄝ᧚ࠍᜬߟ㧕ߦㆡ↪ߢ߈ࠆࠃ߁ߦߥߞߚ⚿ᨐ‫ޔ‬ᐕઍ♖ᐲߩᔅⷐߥᱧผ㑐ㅪ⾗ᢱߦ᦭ലߦߥߞߚ‫ߎޕ‬
ߩ 14C ࠙ࠖࠣ࡞ࡑ࠶࠴ᴺߦࠃࠆ᷹ቯ଀ߪࠊࠇࠊࠇߩ㑐ଥߔࠆ᷹ቯߦ㒢ߞߡ߽ᢙචߦ㆐ߔࠆ‫ޕ‬‫ޣ‬ᐕઍ᷹ቯߩ㜞ᐲൻߦะߌߚ⺖㗴‫ޤ‬ᱧඳߢߪ‫✽ޔ‬ᢥᤨઍ࡮ᒎ↢ᤨઍߦ૶ࠊࠇߚฦ࿯ེဳᑼ
ߩ૶↪ᦼ㑆㧔ᢥൻ✬ᐕ㧕ࠍ⛔⸘⊛ߦ⸃ᨆ್ቯߔࠆߎߣߢ‫ޔ‬⠨ฎቇ✬ᐕ߆ࠄታᐕઍ߳ߩォ឵ࠍⴕߥ޿‫ޔ‬ᣂߒ޿✽ᢥ࡮ᒎ↢ߩᐕઍⷰࠍឭ␜ߒߡ߈ߚ‫⎇ߩࠄࠇߎޕ‬ⓥߦ߅ߌࠆᐕઍ᷹ቯߩኻ⽎ߪ‫ߦ߽߅ޔ‬಴࿯‛ߢ޽ࠆ‫ޕ‬ᱧผ⊛ߥᑪ▽ᧁ᧚ⅣႺ߆ࠄߩᳪᨴߪ໧㗴ߣߥࠄߥ޿߇‫ޔ‬಴࿯‛ߢߪߘࠇࠍߤ߁⹏ଔߔࠆ߆߇㊀ⷐߣߥࠆ‫⹜ޔߚ߹ޕ‬ᢱߦࠃߞߡߪหߓᤨઍߩ߽ߩ߇⇣ߥߞߚ 14C
Ớᐲࠍ␜ߔ‫ޔ߫߃ߣߚޕ‬േ‛ߩ㛽ࠦ࡜࡯ࠥࡦߪ⒳ߦࠃࠆ㆑޿߇ߺࠄࠇࠆߎߣ߇޽ࠅ‫ޔ‬㘩‛ㅪ㎮ߩ㆑޿߇ᶏᵗߥߤߩ࡝ࠩ࡯ࡃ࡯ߩᏅࠍ෻ᤋߒߡ޿ࠆߎߣࠍ␜ໂߒߚ‫ޕ‬ᱧඳߢߪ‫࡮᧚ᧁޔ‬὇ൻ᧚࡮὇ൻ⒳ሶߩ߶߆ߦ࿯ེߦ⌕޿ߚࠬࠬ࡮ὶߍࠍਥߥ⹜ᢱߣߒߚ‫ޕ‬ᧁ᧚߿὇ൻ᧚ߩᐕઍ᷹ቯߦߪ㐳޿ᱧผ߇޽ࠅ‫ޔ‬ᵞᵺᴺ߇⏕┙ߒߡ޿ࠆ߇‫࡮ࠬࠬޔ‬ὶߍߦߟ޿
ߡߪ⎇ⓥ଀߇ዋߥ߆ߞߚߎߣ߆ࠄ‫ޔ‬ᄙߊߩ࠺࡯࠲ࠍಽᨆߒߘߩ⛔⸘⊛ᅷᒰᕈࠍᬌ⸽ߒߚ‫଀ޕ‬߃߫‫ᧁ࡮᧚ᧁޔ‬὇࡮ṭߥߤઁߩ౒઻ㆮ‛ߩ᷹ቯ୯ߣߩᢛวᕈߥߤߢ޽ࠆ‫ޕ‬੹ᓟขࠅ⚵߻ᔅⷐ߇޽ࠆ㊀ⷐ⺖㗴ߣߒߡ‫ޔ‬ᣣᧄ↥᮸ᧁߩ࿾ၞലᨐߩ♖ኒ᷹ቯߣߣ߽ߦ‫ޔ‬ᐕන૏ߢߩ 14C ࠺࡯࠲ᢛ஻߇޽ࠆ‫⹜ޕ‬ᢱߩ 14C ߩᄌേࡄ࠲࡯ࡦ߇ߤߩᄥ㓁ᵴേࠨࠗࠢ࡞ߦ৻⥌ߔࠆ߆ࠍ್ቯߔࠆߎߣߢ‫⺋ޔ‬Ꮕr ᐕ⒟ᐲߢߩᱧᐕઍ᳿ቯ߇น⢻ߢ޽ࠆߣ⠨߃ࠆ‫ޕ‬‫ޤߦࠅࠊ߅ޣ‬14C ᐕઍ᷹ቯᴺߪ⠨ฎቇߦᄙߊߩታࠅࠍ߽ߚࠄߔߎߣߦߥߞߚ৻ᣇߢ‫ޔ‬ᣂߒ޿⍮⷗ߪᣥ᧪ߩ‫ޟ‬ቇ⺑‫ߣޠ‬㘩޿㆑޿ࠍ⷗ߖࠆߎߣ߽ᄙߊ‫ޔ‬14C ᛕ್߇ߒ߫ߒ߫➅ࠅ㄰ߐࠇߡ߈ߚ‫ޕ‬ߘߩਛߦߪ‫ޔ‬ᐕઍ᷹ቯߦ઻߁⛔⸘⃻⽎߳ߩήℂ⸃߽฽߹ࠇࠆ‫ޕ‬ᐕઍ᷹ቯߢߪ‫ޔ‬୘‫ޟߩޘ‬᷹ቯ୯‫⺋ࠆࠊ߆߆ߦޠ‬Ꮕߩ߶߆ߦ‫ޔ‬᷹ቯኻ⽎‛ߣ⋡⊛੐⽎ߦ㑐ࠊࠆਇ⏕ቯᕈ㧔ᨗᱫᐕߣ੐⽎ߩ㑐ଥߥߤ㧕߇޽ࠆ߶߆‫ޔ‬⠨ฎቇ⾗ᢱߩ߽ߟ࿕᦭ߩਇ⏕ቯᕈ㧔̌౒઻̍ߣ‫ࠬ࠙࡝࠹ࡦࡕޟ‬ೣ‫⾗ޔޠ‬ᢱߣᢥൻ੐⽎ߩ㑐ଥߥߤ㧕߇ሽ࿷ߔࠆ‫ޕ‬⠨ฎቇߣ⥄ὼ⑼ቇࠍ✚วߒ⛔⸘⊛ߦಽᨆ⸃㉼ߔࠆⷞ
ὐ߇㊀ⷐߢ޽ࠆ‫ࠅ☼ޔߚ߹ޕ‬ᒝ޿⎇ⓥߣߣ߽ߦቇ㓙⊛ߥදജ㑐ଥ߇⢄ⷐߢ޽ࠆ‫ޕ‬Archaeology and 14C: Present status and issues
IMAMURA, M., SAKAMOTO, M., OZAKI, M., MIYATA,Y.
− 28 −

 

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YAMAGATA, T., NARAZAKI, Y., IKEDA, Y., NAGAI, H., MATSUZAKI, H.,− 29 −

1A14

AMS ࠍ↪޿ߚ࿯ფਛߩ 36Cl/Cl ห૏૕Ყ
╳ᵄᄢ㒮ᢙ‛࡮╳ᵄᄢ #/5 ࠣ࡞࡯ࡊ㧏‫᧲ޔ‬ᄢ /#.6㧐‫ޔ‬-'- ₹ℂ⟤ᥓሶ‫ޔ‬٤ᧃᧁ໪੺‫ޔ‬ᄤ㊁ቁᵗ‫౏╣ޔ‬๺‫ޔ‬㜞ᯅദ#‫᧻ޔ‬྾㓶㛉$䋬ᚭፒ⵨⾆#䋬
ᄢᧁବᓕ#䋬㐳ፉᵏᄦ#䋬ᧁਅື৻#䋬᧻᧛ብ%䋬೎ᚲశᄥ㇢%‫ ޤߦ߼ߓߪޣ‬㐳ඨᷫᦼᩭ⒳ 36Cl ߪቝቮ✢߇ᄢ᳇ਛߩ Ar ߣᩭ෻ᔕࠍ⿠ߎߒߡ↢ᚑߔࠆ‫߆ߒޕ‬ߒ‫ޔ‬1952-1958 ᐕߩ㑆ߦ᳓਄ᩭታ㛎ߦࠃߞߡᄢ㊂ߩ 36Cl ߇↢ᚑߒߚ‫ߩߎޕ‬ᩭታ㛎⿠Ḯߩ 36Cl
ߪ࿾⃿⑼ቇ⎇ⓥߩ⦟޿࠻࡟࡯ࠨ࡯ߣߥߞߡ޿ࠆ‫ޕ‬ᚒ‫⴫ߪޘ‬ጀ࿯ფਛ߆ࠄᏗ⎣㉄ߦࠃߞߡ᛽಴
ߐࠇࠆᚑಽਛߩႮൻ‛ࠗࠝࡦࠍขࠅ಴ߒߡ‫ߩߘޔ‬ਛߩႮ⚛ห૏૕Ყ 36Cl/Cl ߦᵈ⋡ߒߚ‫ߩߘޕ‬ห૏૕Ყߩ࿾ၞᏅ߅ࠃ߮ᷓᐲಽᏓߦߟ޿ߡ⹦⚦ߥ࠺࡯࠲ࠍᓧߡ‫ޔ‬ᩭታ㛎⿠Ḯߩ 36Cl ߩᓇ㗀ߩ
ᐲว޿߿ⅣႺਛߩႮ⚛ᓴⅣߦ㑐ߔࠆ࠻࡟࡯ࠨ࡯೑↪ߩน⢻ᕈߥߤࠍ฽߼ߡᬌ⸛ߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬ᣣᧄ೉ፉߩ╬✲ᐲ࿾ၞ㧔37° 20’ N ~37° 30’ N㧕ߦ߅޿ߡ㧘ᣣᧄᶏ஥߆ࠄᄥᐔᵗ஥ߦ߆ߌߡ 6 ࠨࠗ࠻ว⸘ 27 ࿾ὐߢ࿯ფࠍណขߒߚ‫ޕ‬࿯ფ⹜ᢱߩಣℂᠲ૞ߦߪᡷ⦟ߒߚᣇᴺࠍ↪޿ߚ 1)‫ޕ‬࿯ფ⹜ᢱߪ‫ޔ‬120 ͠ߢੇ῎ߒ‫ߡߞࠃߦࠗ࡞ࡈޔ‬ਇ⚐‛ࠍ㒰෰ߒߚᓟ‫ޔ‬Ꮧ⎣㉄ߢႮ⚛ࠍ᛽಴ߒ㧘ᵴᕈ὇ߢṁ⸃ᕈ᦭ᯏ‛ࠍๆ⌕㒰෰ߒߚ‫ᦨޕ‬ᓟߦㆊ㉄ൻ᳓⚛ߦࠃࠅṁሽ᦭ᯏ‛ࠍቢోߦಽ⸃ߒߚᓟߦ‫ ߥ⊛⥸৻ޔ‬AMS ⹜ᢱ⺞ᢛᴺߦߒߚ߇ߞߡ AgCl Ⴎߣߒߚ‫╳ޕ‬ᵄᄢቇ࠲ࡦ࠺ࡓ
ടㅦེߩ AMS ⵝ⟎ߦࠃࠅ 36Cl/Cl ห૏૕Ყࠍ᷹ቯߒߚ‫ޕ‬‫⚿ޣ‬ᨐ࡮⠨ኤ‫ ో ޤ‬27 ࿾ὐߩ⴫ጀ࿯ფ߅ࠃ߮ 3 ࿾ὐߩ 1 m ࿯ფࠦࠕ㧔5 cm ߹ߚߪ 10 cm ߩᷓᐲ඙↹㧕ߩ 36Cl/Cl ห૏૕Ყ‫ޔ‬137Cs Ớᐲ߅ࠃ߮ᒝᾲᷫ㊂㧔LOI㧕ߩ⚿ᨐࠍᓧߚ‫ޕ‬27 ࿾ὐߩ⴫ጀ(⚂ 2-6 cm)ߦ߅ߌࠆ 36Cl/Cl ห૏૕Ყߩ᷹ቯ୯ߪ 0.110-13 ߆ࠄ 3.710-13 ߩ᏷ᐢ޿▸࿐ࠍ␜ߒߚ‫ࠆࠃߦ࠻ࠗࠨޕ‬Ꮕ⇣ߣߒߡߪᣣᧄᶏ஥ߩ KK ࠨࠗ࠻ߦ߅޿ߡో૕ߦૐ޿୯߇ᓧࠄࠇߚ‫ޕ‬ߚߛߒ‫ޔ‬ᰴߩᷓᐲಽᏓߢ⴫ߐࠇࠆࠃ߁ߦ⴫㕙߆ࠄ 20-30 cm ߩᷓᐲ߹ߢߩಽᏓߪߘߩ႐ᚲߦࠃ
36Cl/Clߞߡ⇣ߥࠆߚ߼⴫㕙߆ࠄ 6 cm ߹ߢߩ 36Cl/C ห
10㺍15
10㺍14
10㺍13
10㺍12
૏૕Ყࠍන⚐ߦᲧセߔࠆߎߣ߇ߢ߈ߥ޿‫ޕ‬1 m߹ߢߩࠦࠕ⹜ᢱ߆ࠄ KK-9, KK-12, AB-1 ߩ 3 ࿾ Site AB predicted value (A)KKὐߢߩᷓᐲಽᏓ߇ᓧࠄࠇߚ‫ޕ‬࿑(B)ߦߪߘߩ߁ߜ Site KK predicted valueߩ KK-12 ߣ AB-1 ࠍ␜ߔ‫ޕ‬KK-9 ߪᣣᧄᶏߩᶏ
Snow sample
AB(from Site KK)ጯߩ⹜ᢱߢ 0.110-13 ߢ 1 m ߹ߢ߶ߣࠎߤᄌൻ
0(B)߇᷹ⷰߐࠇߥ߆ߞߚ‫ߦࠇߘޕ‬ኻߒߡ‫ޔ‬KK-12 ߪ-13
20
10-15 cm ߩᷓᐲߢ 1.710 ߣᦨᄢࠍ␜ߒ‫ޔ‬ᷓߊߥࠆ߶ߤห૏૕Ყߪዊߐߊߥߞߚ‫ޕ‬AB-1 ߪ
40
0-5 cm ߢᦨᄢࠍ␜ߒ‫ޔ‬ห૏૕Ყߪ 3.710-13 ߢ‫ޔ‬
60
30 cm ߹ߢߪਅ߇ߞߡ޿ߊ߇‫ࠇߘޔ‬એᷓ 100 cm
߹ߢߪ߶߷৻ቯߩ୯ࠍ␜ߒߚ‫⚿ߩࠄࠇߎޕ‬ᨐ߆
80
♽೉
Ͳ
ࠄ࿯ფਛߩႮൻ‛ਛߩห૏૕Ყߪ႐ᚲߦࠃߞ
KK-12
Ͳ
100
AB-1
ߡ⇣ߥࠆ௑ะࠍ␜ߔߎߣ߇ಽ߆ߞߚ‫ޔߚ߹ޕ‬࿑♽೉(A)ߦߪ⃻࿷ߩቝቮ✢ߦࠃࠆ 36Cl ߩ↢ᚑ㊂ߣᶏ
Figure Depth profiles of 36Cl/Cl in KK-12 and AB-1,
ጯ߆ࠄߩ〒㔌ߦࠃࠆ㒠ਅႮ⚛㊂ࠍ઒ቯߒߡ᳞߼
predicted 36Cl/Cl in rainwater and observed 36Cl/Cl inߚߘࠇߙࠇߩ႐ᚲߦ߅ߌࠆห૏૕Ყࠍ␜ߒߚ‫ޕ‬
36Cl/Cl㪈㪅㪇㪜㪄㪈㪌

㪈㪅㪇㪜㪄㪈㪋

㪈㪅㪇㪜㪄㪈㪊

㪈㪅㪇㪜㪄㪈㪉

Ͳ

Ͳ

Ͳ

Depth (cm)Depth(cm)



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snow at KK site.

1) ₹ℂࠄ‫ ╙ޔ‬52 ࿁᡼኿ൻቇ⸛⺰ળ 1P06‫ޔ‬ᐢፉ(2008).
Isotope ratios of 36Cl/Cl in soils by AMSTAMARI, M., SUEKI, K., AMANO, T., SASA, K., TAKAHASHI, T., MATSUSHI, Y., TOSAKI, Y., OKI,
T., NAGASHIMA, Y., KINOSHITA, T., MATSUMURA, H., BESSHO, K.
− 30 −

1A15

ᣣᧄᶏ⋆෸߮ᄢ๺ᶏ⋆ߦ߅ߌࠆ 129I ߩಽᏓේሶജᯏ᭴࡮ⅣႺേᘒ ‫ޔ‬ਛᄩ᳓⎇࡮ᶏᵗ᡼኿⢻ ٤㋈ᧁፏผ ‫⊝ޔ‬Ꮉ᣽ᐘ ‫ޔ‬ᄖᎹ❱ᒾ 

Depth (m)‫ޤߦ߼ߓߪޣ‬ᣣᧄᶏߪᶏ᳓ਛߩṁሽ㉄⚛㊂ߩᷫዋ߿ᶏ᳓᷷ߩ਄᣹ߥߤ࿾⃿᷷ᥦൻߩᓇ㗀ߦኻߒߡ㍈ᢅߦ෻ᔕߔࠆᶏၞߢ޽ࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ߇‫ޔ‬ᶏ᳓ᓴⅣ᭴ㅧ╬ਇ᣿ߥὐ߇ᄙ޿‫ߚ߹ޕ‬ᣣᧄᶏߩᶏ᳓ߪ⚂ 100 - 200 ᐕߢ౉ࠇᦧࠊࠆߣ޿ࠊࠇߡ߅ࠅ‫ޔ‬ේሶജ೑↪ߦࠃࠆ᡼኿ᕈᩭ⒳ߩ᡼಴ᦼ㑆㧔⚂ 60 ᐕ㧕߇ߎߩᤨ㑆ࠬࠤ࡯࡞ߣㄭ޿ߎߣ߆ࠄ‫ߩࠄࠇߎޔ‬᡼኿ᕈᩭ⒳ߪᣣᧄᶏᶏ᳓ᓴⅣࠍ⸃
᣿ߔࠆ਄ߢ᦭↪ߥ࠻࡟࡯ࠨ࡯ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ ߦࠄߐޕ‬129I ߿ 14C ߪടㅦེ⾰㊂ಽᨆⵝ⟎ࠍ↪޿ࠆߎߣߦࠃࠅ‫ޔ‬ଏ⹜ᢱ㊂߇㕖Ᏹߦዋߥߊ⍴ᤨ㑆ߢ᷹ቯߔࠆߎߣ߇น⢻ߥߚ߼․ߦ᦭↪ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪᣣᧄᶏߦ߅ߌࠆ‫ޔ‬ᣣᧄᶏ⋆෸߮ᄢ๺ᶏ⋆ਛߩ 129I ෸߮
14C ࠍ᷹ቯߔࠆߎߣߦࠃࠅ‫ޔ‬ᣣᧄᶏᐩጀ᳓ߦ߅ߌࠆᶏ᳓ߩᓴⅣ᭴ㅧߦߟ޿ߡ⼏⺰ߔࠆ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬2007 ᐕ 7 ᦬ߦਛᄩ᳓⎇ᚲዻߩ⫷㣔ਣ(SY07)ߦߡᣣᧄᶏ⋆(41o00 N, 138o00 E)ߣᄢ๺ᶏ⋆(38o30 N, 135o00 E)ߢ 129I ෸߮ 14C ↪ߩᶏ᳓⹜ᢱࠍណขߒߚ‫ ߚ߹ޕ‬2007 ᐕ 11 ᦬ߦർᶏ㆏ᄢቇᚲ
ዻߩ߅ߒࠂࠈਣ(OS07)ߦߡᣣᧄᶏ⋆㧔41o10 N, 137o40 E㧕ߣᄢ๺ᶏ⋆㧔38o30 N, 135o30 E㧕ߢ129I ↪ߩᶏ᳓⹜ᢱࠍណขߒߚ‫ޕ‬129I ෸߮ 14C ߪߘࠇߙࠇ࡛࠙ൻ㌁෸߮ࠣ࡜ࡈࠔࠗ࠻ߣߒߡ᛽಴
ᓟ‫ޔ‬ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴㕍᫪⎇ⓥ㐿⊒࠮ࡦ࠲࡯ߦ⸳⟎ߒߡ޽ࠆടㅦེ⾰㊂ಽᨆⵝ⟎ߦࠃߞߡ᷹ቯߒߚ‫ޕ‬‫⚿ޣ‬ᨐ߅ࠃ߮⠨ኤ‫ޤ‬
࿑ 1 ߦ᳓ᷓ 1000m એਅߦ߅ߌࠆᣣᧄᶏ⋆෸߮ᄢ๺ᶏ⋆ߦ߅ߌࠆ࡛࠙⚛ห૏૕Ყ㧔129I/127I㧕
ߩ㋦⋥ಽᏓࠍ␜ߔ‫ޕ‬ᶏ᳓᷷ߩ᷹ቯ⚿ᨐ߆ࠄᣣᧄᶏ⋆෸߮ᄢ๺ᶏ⋆ߦ߅ߌࠆᣣᧄᶏᐩጀ᳓ߪߘ
129 127
ࠇߙࠇ᳓ᷓ 2500 m ෸߮ 2200 m એਅߢ޽ߞߚ‫ߎޕ‬I/ I (x10-12)
129 127
ߩ᳓ᷓએਅߢߪ I/ I ߩಽᏓߪਔᶏ⋆ߣ߽㋦⋥
0
5
10
15
20
25
30
1000
ᣇะߦ৻ቯ୯ࠍ␜ߒ‫ޔ‬ᣣᧄᶏᐩጀ᳓ߪ㋦⋥ᣇะߦ
1500ဋ৻ߥ᳓႙ߢ޽ࠆߎߣ߇ಽ߆ࠆ‫ޕ‬ᣣᧄᶏ⋆෸߮ᄢ
129 127๺ᶏ⋆ߦ߅ߌࠆ I/ I ߪߘࠇߙࠇ(6.70.1)
2000
10-12 ෸߮(9.20.1)10-12 ࠍ␜ߒ‫ޔ‬ᶏ⋆ᲤߦỚᐲ߇⇣ߥࠆߎߣ߇ಽ߆ߞߚ‫⚿ߩߎޕ‬ᨐ߆ࠄᣣᧄᶏᐩጀ
2500
᳓ߪ㋦⋥ᣇะߦߪဋ৻ߢ޽ࠆ߇‫ޔ‬ᶏ⋆ߦࠃࠅฦ⒳3000ߩỚᐲᏅ߇ሽ࿷ߔࠆߎߣ߇᣿ࠄ߆ߦߥߞߚ‫ߩߎޕ‬
SY07 Japan BasinỚᐲᏅߪᣣᧄᶏᐩጀ᳓߇⴫㕙ᶏ᳓ߩᴉߺㄟߺߦࠃ
SY07 Yamato Basin
3500
OS07 Japan Basinࠅᒻᚑߐࠇࠆ㓙ᜬߞߡ޿ߚᶏ᳓ਛߩ 129I/127I ࠍ෻
OS07 YamatoBasin
4000ᤋߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬129I ߪේሶജ೑↪ߦ઻޿
ⅣႺਛߦ᡼಴ߐࠇ‫⴫ޔ‬㕙ᶏ᳓ਛߩ 129I/127I ߪᐕ‫ޘ‬㜞ߊߥߞߡ߈ߡ޿ࠆߩߢᐩጀ᳓ਛߩ 129I/127IߪỚᐲ߇㜞޿߶ߤᣂߒ޿ᶏ᳓ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫੹ߜࠊߥߔޕ‬࿁ᓧࠄࠇߚ⚿ᨐ߆ࠄߪᄢ๺ᶏ
⋆ߪᣣᧄᶏ⋆ࠃࠅᣂߒ޿ᶏ᳓ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫ߪࠇߎޕ‬ᣣᧄᶏᐩጀ᳓߇ᄢ๺ᶏ⋆߆ࠄᣣᧄᶏ⋆ߦᵹࠇߡ޿ࠆߣߔࠆᵹㅦ⸘߆ࠄߩ⚿ᨐ(Senjyu et al., 2005 )ߣ৻⥌ߒߡ޿ࠆ‫ޕ‬એ਄ߩߎߣ߆
ࠄ 129I ߪᣣᧄᶏᐩጀ᳓ߩᓴⅣࠍ⠨߃ࠆ਄ߢ᦭↪ߥ࠻࡟࡯ࠨ࡯ߢ޽ࠆߣ⠨߃ࠄࠇ‫ࠅࠃޔ‬ᐢ▸࿐ߥ⺞ᩏࠍⴕ߁ߎߣߢᣣᧄᶏᐩጀ᳓ߩ⹦⚦ߥᓴⅣ᭴ㅧࠍ⸃᣿ߢ߈ࠆน⢻ᕈ߇޽ࠆ‫ޕ‬The distribution of 129I in the Japan Basin and Yamato BasinSUZUKI, T., MINAKAWA, M., TOGAWA, O.
− 31 −

1A16⍹⾰㓓⍹ਛߩ 36Cl ↢ᚑ₸(Τ)(㚂ㇺᄢ㒮ℂᎿ 1㧘╳ᵄᄢ 2㧘᧲ᄢ 3㧘㜞ࠛࡀ⎇ 4) ٤ᵿਛ⧐ᢥ 1㧘ᄢᶆᵏ༹ 1㧘ᶏ⠧ේల 1㧘╣౏๺ 2㧘㐳ፉᵏᄦ 2㧘㜞ᯅദ 2㧘ᚭፒ⵨⾆ 2㧘᧻྾㓶㛉 3㧘₹ℂ⟤ᥓሶ 2㧘ᄤ㊁ቁᵗ 2㧘ᧃᧁ໪੺ 2㧘೎ᚲశᄥ㇢ 4㧘ᧁਅື৻ 2ਛᕈሶ᝝₪෻ᔕ䈮䉋䉎↢ᚑ₸ [dpm/kg]‫ ޤߦ߼ߓߪޣ‬㓓⍹ਛߦ฽߹ࠇߡ޿ࠆቝቮ✢↢ᚑᩭ⒳ߪ㧘㓓⍹ߩᾖ኿ᐕઍ߿⪭ਅᐕઍߣ޿ߞߚ
ᐕઍ᷹ቯ߿㧘࿾⃿ߦ⪭ਅߔࠆ೨ߩᄢ߈ߐߩផቯߥߤߦ↪޿ࠄࠇߡ޿ࠆ㧚ቝቮ✢↢ᚑᩭ⒳ߩ 1ߟߢ޽ࠆ 36Cl㧔ඨᷫᦼ 30 ਁᐕ㧕ߪ㧘㊄ዻ⋧ਛߢߪਥߦ Fe ߿ Ni ߩᩭ⎕⎈෻ᔕߦࠃߞߡ↢ᚑߐࠇ㧘․ߦධᭂ㓓⍹ߩ⪭ਅᐕઍ᷹ቯߦ↪޿ࠄࠇߡ޿ࠆ㧚߹ߚ㧘ࠤࠗ㉄Ⴎ⋧ਛߢߪ Fe ߣ Ni ߩ߶߆ߦ߽ K ߿ Ca ߥߤߩᩭ⎕⎈෻ᔕ߿㧘 35Cl ߩਛᕈሶ᝝₪෻ᔕߦࠃߞߡ߽↢ᚑߐࠇࠆ㧚㓁ሶߦࠃࠆᩭ⎕⎈෻ᔕߩ 36Cl ↢ᚑബ⿠㑐ᢙߪᮡ⊛ర⚛ߏߣߦ♽⛔⊛ߦᄌൻߒߡ޿ࠆߚ߼㧘(n, J ෻ᔕ߽฽߼ߡ㓓⍹ਛߢߩฦర⚛߆ࠄߩ 36Cl ↢ᚑ₸ࠍ᳞߼ࠆߎߣߢ㧘ቝቮ✢ᾖ኿ⅣႺߦߟ޿ߡᷓߊ
⼏⺰ߢ߈ࠆߣ⠨߃ࠄࠇࠆ㧚ߘߎߢᚒ‫ߪޘ‬ㆊ෰ߦ 2 ߟߩ⍹⾰㓓⍹ਛߢߩర⚛޽ߚࠅߩ 36Cl ↢ᚑ₸ࠍ᳞߼ߚ[1]㧚⹜ᢱߦࠃߞߡ 36Cl ↢ᚑ₸߇⇣ߥࠆߎߣࠍᦼᓙߒߚ߇㧘ᓧࠄࠇߚ↢ᚑ₸ߪ߶߷หߓߢ޽ߞߚߚ߼㧘੹࿁㧘ᣂߚߥ㓓⍹⹜ᢱࠍ↪޿ߡ㧘ฦᮡ⊛ర⚛ߢߩ 36Cl ↢ᚑ₸ࠍផቯߒߚ
ߩߢႎ๔ߔࠆ㧚‫ޣ‬ታ㛎‫ ޤ‬Gold Basin 㓓⍹(L ࠦࡦ࠼࡜ࠗ࠻)ࠍ 2 ᢿ ߣ㧘Gao 㓓⍹(H ࠦࡦ࠼࡜ࠗ࠻) 1 ᢿ ࠍ⎈޿ߡ☳ᧃ⁁ߦߒ㧘⏛⍹ߢࠤࠗ㉄Ⴎ⋧ߣ㊄ዻ⋧ߦಽ㔌ߒߚ㧚ᓧࠄࠇߚࠤࠗ㉄Ⴎ⋧ߪߐࠄߦ⎣㉄
ߢಣℂߔࠆߎߣߦࠃࠅ㉄นṁ⋧ߣਇṁ⋧ߦಽߌߡ㧘ฦ⹜ᢱߢ 6 ߟߩ⋧ࠍᓧߚ㧚ߎࠇࠄߩ 36Cl
Ớᐲࠍ╳ᵄᄢቇ࠲ࡦ࠺ࡓဳടㅦེࠍ↪޿ߚടㅦེ⾰㊂ಽᨆᴺߦࠃࠅቯ㊂ߒߚ㧚߹ߚ㧘ᮡ⊛ర⚛Ớᐲࠍ 3 ⒳㘃ߩ᡼኿ൻಽᨆᴺߦࠃࠅቯ㊂ߒߚ㧚‫⚿ޣ‬ᨐ‫ߩߤ ޤ‬㓓⍹ᢿ ߢ߽㧘ࠤࠗ㉄Ⴎߩ⎣㉄นṁ⋧ߢ 36Cl Ớᐲ߇ᦨ߽㜞ߊߥࠅ㧘એ೨ߦಽᨆ
ߒߚ Allegan ߿ Barwell 㓓⍹ߣߪ⇣ߥߞߚ௑ะࠍ␜ߒߚ㧚Welten et al.[2]ߪ㧘Gold Basin 㓓⍹ 15
ᢿ ਛߩቝቮ✢↢ᚑᩭ⒳Ớᐲࠍႎ๔ߒߡ޿ࠆ߇㧘੹࿁ቯ㊂ߒߚ 36Cl Ớᐲߪߘࠇࠄߣห᭽ߩ௑
ะࠍ␜ߒߚ㧚Welten et al.ߪࡕ࠺࡞⸘▚߽↪
15
fragment #1 fragment #2 Welten et al.
޿ߡ㧘ᩭ⎕⎈෻ᔕߣਛᕈሶ᝝₪෻ᔕ߆ࠄߩ
36ነਈࠍߘࠇߙࠇផቯߒߚ㧚ᧄ⎇ⓥߢߪ Cl
12߇ነਈߩᄢ߈ߥ Cl, (K + Ca), (Fe + Ni)ߩర
9⚛⟲߆ࠄߩߺ↢ᚑߐࠇࠆߣ઒ቯߒߡ㧘ೋ߼ߡታ㛎୯ߩߺ߆ࠄ↢ᚑ₸ࠍផቯߒߚ㧚ᓧࠄ
6
ࠇߚ 36Cl ↢ᚑ₸ߪ㧘Welten et al.ߦࠃࠆᩭ⎕⎈෻ᔕߣਛᕈሶ᝝₪෻ᔕߩ⋧㑐ߣ߶߷৻⥌3
ߒߚ(࿑ 1)㧚ࠃߞߡ㧘ᧄᴺߦࠃࠆ↢ᚑ₸ߩផቯ୯ߪᅷᒰߢ޽ࠆߣ⠨߃ࠄࠇࠆ㧚 (n, J)ߦ
0
0
2
4
6
ࠃࠆነਈ߇♽⛔⊛ߦዋߒ㜞ߊߥߞߡ޿ࠆ᭽
ᩭ⎕⎈෻ᔕ䈮䉋䉎↢ᚑ₸ [dpm /kg]
36ߢ߽޽ࠆ߇㧘ᧄᴺߦࠃࠅᓧࠄࠇࠆ Cl ↢ᚑ࿑1 䉬䉟㉄Ⴎ⋧䈱36Cl↢ᚑ₸₸ߩ୯ߪ㧘Cl Ớᐲߦᄢ߈ߊଐሽߔࠆߩߢ㧘ࠃࠅᱜ⏕ߥ Cl Ớᐲࠍ᳞߼ࠆᔅⷐ߇޽ࠆ㧚[1] ᄢᶆ ઁ㧘╙ 51 ࿁᡼኿ൻቇ⸛⺰ળ 1A09 (2007) [2] K.C.Welten et al., Meteor. Planet. Sci. 38, 157-173 (2003)
Production rate of 36Cl in chondritic meteorites (Τ)
HAMANAKA, Y., OURA, Y., EBIHARA, M., SASA, K., NAGASHIMA, Y., TAKAHASHI, T., TOSAKI,
Y., MATSUSHI, Y., TAMARI, M., AMANO,T., SUEKI,K., BESSHO, K., KINOSHITA, N.
− 32 −

1A17

p ᰾ Sm-146 ࡢ AMSᐃ( ⟃Ἴ኱ຍ㏿ჾ 0-;0@'84? '84?91!9=;0,70 ;29880!,=498,6,-9;,=9;B &!$,-9;,=9;B'84?4-;0/0;>A0660<!9;=3@0<=0;8'84? ᮾ኱ᾏὒ◊ 㜰኱㝔⌮ ᮾ໭኱ከඖ◊ ᮾ໭኱᰾⌮◊ 㔠ἑ኱⌮ᕤᏛᇦ)‫ۑ‬ᮌୗဴ୍ 

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ࡢྠ఩యẚ␗ᖖࡢ ᐃࡼࡾኴ㝧⣔ㄌ⏕᫬ࡢᏑᅾ㔞ࡀ▱ࡽࢀ࡚࠸ࡿࠋ%7  ࡢ༙ῶᮇࡣኴ㝧⣔ึᮇ࡟Ꮡᅾࡋ࡚࠸ࡓ

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᰾✀


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

%7 ࢆ〇㐀ࡋࠊ %7 ࡢ༙ῶᮇࢆ

%7 %7 ཎᏊᩘẚ࡜ᨺᑕ⬟ẚࠊ %7 ࡢ༙ῶᮇࡢ✚ࡼࡾィ⟬ࡍࡿࡇ࡜ࢆィ⏬ࡋࡓࠋȘࢫ࣌ࢡࢺ࣓ࣟࢺ࣮ࣜ
%7 %7 ᨺᑕ⬟ẚࢆᐃ㔞ࡋࠊᮾ኱ᾏὒ◊ࡢ࡟ࡼࡾ⾲㠃㟁㞳ᆺ㉁㔞ศᯒィࢆ⏝࠸࡚ኳ↛࡟Ꮡᅾࡍࡿ

ᐃࢆヨࡳࡓ࡜ࡇࢁࠊ!/ ࡢ ጉ ᐖ ࡀ ぢ ࡽ ࢀ ࠊ ;29880

!,=498,6,-9;,=9;B ࡟࡚ຍ㏿ჾ㉁㔞ศᯒࢆ⾜ࡗࡓࠋ㔠ᒓ≧ែ࡟㑏ඖࡋࡓ %7 ࢆ $ ࢖࢜ࣥ※࡟ᤄධࡋࠊ
%7 ࢆ㉸ఏᑟࣛ࢖ࢼࢵࢡ࡛  ࢞ࢫ඘ሸ㟁☢▼42 ࢆ⏝࠸࡚0( ࡟ࡲ࡛ຍ㏿ࠊ

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42 %.307,=4./4,2;,7912,<14660/7,280=ࡋ㌶㐨ࡢ㐪࠸ࢆ఩⨨᳨ฟჾ##࡛ ᐃࠊ᭦࡟ࡑࡢᚋ
᪉࡟㓄⨨ࡉࢀࡓ㟁㞳⟽ࢆ⏝࠸࡚ //A42 ࠋࡲࡓࡑࡢ୍᪉࡛ࣅ࣮࣒ࢆ



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࡟ษࡾ᭰࠼

᪂ࡓ࡟ຍ㏿ࡋࠊ࢞ࢫ඘ሸ㟁☢▼ࡢᡭ๓ࡢࣇ࢓ࣛࢹ࣮࢝
%7  ࡢ㟁ὶ್ࢆ

ࢵࣉ࡛


ᐃࡋࠊ

ࡘࡢ

ᐃࡼࡾ



%7 %7 ཎᏊᩘẚࢆᑟฟࡋࡓࠋࡋ࠿ࡋ࡞ࡀࡽࠊࡇࡢ

 % ࡛ࡣᶆ‽ࡀ࡞࠸ࡓࡵ࡟

ࡘࡢ␗࡞ࡿ࢖࢜ࣥࡢ࢖

࢜ࣥ※࠿ࡽ᳨ฟჾࡲ࡛ࡢ㍺㏦ຠ⋡ࠊ࢞ࢫ඘ሸ㟁☢▼ෆ%7

ࡢ㍺㏦ຠ⋡ࠊࣅ࣮࣒ࡢ୙⣧≀࡟㓄៖ࡋࡓ ᐃࢆࡍࡿᚲ
せࡀ࠶ࡿࠋ ᐃࡢ⤖ᯝࠊࡇࢀࡽࡢᙳ㡪ࡣᑠࡉ࠸ࡇ࡜ࡀ
ศ࠿ࡗࡓࠋຍ㏿ჾ㉁㔞ศᯒࡢᡭἲࡀ☜❧ࡉࢀࠊ%7 ࡢ༙ῶᮇࡀồࡲࡾࡘࡘ࠶ࡿࠋ

42  :69=91 %7,8/ !/ %70,<>;0708=91:8>.604%7 !"%& ! #'  $!$  !%%$  ""! # %( +$"$&%"!  % &&  &! *   "(!  $! #!$%"!!++ $+%&#$"$#&!
$   %"&& $ ("!$% $ !"&!  '$   "$+ %%"!! )&%! &%'%$&"&%'&$"%!!%&+""+ 
− 33 −

1A18
#ࡃࠗࠝࡑࠬ↱᧪ᐲ᷹ቯᴺߩᮡḰൻน⢻ᕈߦߟ޿ߡ
㩔㩨㨼㨿㨼㩧㩊㩨㩇㩎㩢㨺දળ ‫ޔ‬ർᄢ㒮࡮ㄘቇ⎇ⓥ㒮  ٤ᄢፉ৻ผ ‫᧛ᧁޔ‬ବ▸ ‫ޔ‬ヨ⍹ำሶ㧝‫ࠝࠗࡃ ޤߦ߼ߓߪޣ‬Άᢱ‫ࠝࠗࡃޔ‬ൻቇຠ㧔ࠛ࠴࡟ࡦ‫ߥ㉄੃ޔ㉄ࠢࡂࠦޔ࡞࡯ࠝࠫࡦࡄࡠࡊޔ‬ߤ㧕‫ࠝࠗࡃޔ‬ൻᚑຠ㧔⇇㕙ᵴᕈ೷߿ࠗࡦࠢේᢱߥߤ㧕‫ࠢ࠶࠴ࠬ࡜ࡊߦࠄߐޔ‬㧔㈶㉄࠮࡞ࡠ࡯ࠬ
߿ࡐ࡝੃㉄‫ߚ߹ޔ‬ㄭᧂ᧪ߦߪࡐ࡝ࠝ࡟ࡈࠖࡦ߿ PET ߽㧕ߥߤ‫ޔ‬ේᢱ㧔ߩ৻ㇱ㧕ߦൻ⍹⾗Ḯ߆ࠄ↢‛⾗Ḯ㧔ࡃࠗࠝࡑࠬ, BM㧕ࠍ૶↪ߔࠆ⚛᧚߇㐿⊒ߐࠇ‫ޔ‬න⁛ߢ‫ߪ޿ࠆ޽ޔ‬ᄙ⒳ᄙ᭽ߥ᦭
ᯏ‛㧛ήᯏ‛ߣⶄวൻߐࠇߡᣣᏱຠߣߒߡ⊓႐ߒߡ߈ߚ‫ޕ‬ਛߢ߽ࡃࠗࠝΆᢱߪߘߩ᥉෸߇ૐ
὇⚛ဳ␠ળ߳ߩ⒖ⴕ߿⍹ᴤ▵⚂ߥߤߩⷰὐ߆ࠄ⒢೙਄ߩఝㆄភ⟎߇ߣࠄࠇ‫ޔ‬࿖߇ߘߩ᥉෸ࠍ
₸వߒߡ޿ࠆ‫߆⷗ߩ᧚⚛ࠄࠇߎޕ‬ἢỶỼἰἋࡇύήίᾒᵋຜࡇᘙᅆᾊྸᛯ͌ὸ
ߌ㨯ຠ⾰ߪ⍹ᴤ↱᧪ຠߣߩ⼂೎߇㪈㪉㪇ᵠᵫࡇίήᾉྸᛯ͌ὸᾌᵎᵌᵗᵗᵔᵓῒᵠᵫࡇίᵃᾊᵟᵫᵱඥย‫͌ܭ‬ὸẆᵰᵐᵛᵎᵌᵗᵗᵕᵔ࿎㔍ߢ޽ࠅ‫ޔ‬ᱜߒ޿᥉෸ࠍ⸘ࠆߚ
߼ߦߪߘߩ BM ↱᧪ࠍ⑼ቇ⊛ߦ㪈㪇㪇 ᵖᵎήᾋᵠᵫࡇṓᵏᵎᵎήᾉྸᛯᵠᵫࡇύᵃᾌᵎᵌᵗᵎᵎᵒῒย‫ܭ‬ᵠᵫࡇᵆᵃᵇᵉᵗᵌᵗᵓᵐᵕύᵰ ᵛᵎᵌᵗᵓᵐᵏᵎήṓᵠᵫࡇᾋᵏᵓήᾉᜂ଻ߔࠆ౏ᐔߥ઀⚵ߺߩ᭴▽߇
ྸᛯᵠᵫࡇύᵃᾌᵎᵌᵗᵗᵔᵐῒย‫ܭ‬ᵠᵫࡇᵆᵃᵇύᵰ ᵛᵎᵌᵗᵖᵓᵒ㪏㪇ᦸ߹ߒ޿ߎߣ߆ࠄ‫ޔ‬᡼኿ᕈ὇⚛᷹ԃὉஙឋኒῷ​῟ῢῼῪቯᴺߩᮡḰൻน⢻ᕈߦߟ޿ߡ⺞㪍㪇ᩏߒߚ㧔㧔⽷㧕㧶㧷㧭ߩᯏ᪾Ꮏᬺᝄ
⥝੐ᬺ⵬ഥ㊄ߩ੤ઃࠍฃߌߡⴕ߁
㪋㪇㧔⽷㧕ᯏ᪾ࠪࠬ࠹ࡓᝄ⥝දળߩ㪉㪇㧔⽷㧕㩔㩨㨼㨿㨼㩧㩊㩨㩇㩎㩢㨺දળ߳ߩᆔ
‫ޕ‬⸤ߦࠃࠆ੐ᬺߣߒߡታᣉ㧕㪇‫ޣ‬ታ㛎‫ޤ‬BM ↱᧪ᚑಽࠍ฽߻ᵐᵐ

ฦ⒳⚛᧚㧔⚂ 30 ⒳㧕ਛߩ 14C ฽㪇㪉㪇ߢ⸘᷹ߒߡ BM ↱᧪ᐲࠍ⹏ଔߔࠆಽ

‫ݣ‬ᝋ᝻஬
‫ݣ‬ᝋ᝻஬㪈㪇㪇㪈㪉㪇ᵪᵋṞᾉᵡᵔᵦᵔ ᵋ҄ ᵪᵱᵡ ඥίᵟᵱᵲᵫ ᵢᵔᵖᵔᵔᵍᵫᶃᶒᶆᶍᶂ ᵡὸ

‫˳׍‬ᾎ
෩˳ᾎ

㛎ᴺ㧔ASTM D 6866㧧CO2 ޽ࠆ޿ߪ‫˳׍‬឵ߒߚ AMS ᴺ㧕ߣߩኻᲧߩ਄ߢ⺞㪏㪇࿑㧝 㧯㧙ൻ AMS ᴺߦࠃࠆ᷹ቯ⚿ᨐ

ᨆᴺߩᮡḰൻน⢻ᕈࠍ‫☨ޔ‬࿖᧚ᢱ⹜
C6H6 ߳ᄌ឵ߒߚ LSC ᴺ㧛CO2 ൻ߳ᄌ㪍㪇ἢỶỼἰἋࡇύήίᾒᵋຜࡇᘙᅆᾊᵟᵫᵱඥย‫͌ܭ‬ὸ

㊂ࠍടㅦེ⾰㊂ಽᨆᴺ(AMS)෸
߮ᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࡦᴺ(LSC)㪋㪇෩˳ῷ​῟ῢ༓૰
ᾎ

ԁ

൦๋෩
ᾎ

ԁ

ᵪᵋṡᾎ

ԁ

ίᢘဇӧᏡὸ๋෩҄ᾔόᾎᵪᵋṟᾉᾁെ᨞൦ਁЈ ᵪᵱᵡ ඥ

ᑣ๋‫ۥ‬
ẝụᾎ
ᾔᾣᾑᾔᾎ
ԁ

ᩏ࡮ᬌ⸛ߒߚ‫ޕ‬ᵪᵋṠᾉ໯ϼྸῒႺ੗ ᵪᵱᵡ ඥίᡆᡮЙ‫ܭ‬ửॖ‫׋‬ẲẺย‫ܭ‬ඥỂ ᾛ-ṡ ểỊီễỦὸᵠᶇᶍᵥᵿᶑ
ᵝᵪᵋṡᾉ໯ϼྸῒႺ੗ ᵪᵱᵡ ඥ‫⚿ޣ‬ᨐ‫ࠝࠗࡃޤ‬Άᢱߥߤᶧ⁁♽ߦ
ᵠᵢᵤ ᵝᵪᵋṢᾉᏮᑥ҄ ᵪᵱᵡ ඥߟ޿ߡߪ‛⾰ᄌ឵ߔࠆߎߣߥߊ LSCᵈ- 䋱䋺ᚒ䈏࿖䈪䈲⽴Ზ䈭䈬䈮↱᧪䈜䉎὇㉄Ⴎ䉕ᴺ߇‫ ߚ߹ޔ‬BM ↱᧪ࡊ࡜ࠬ࠴࠶ࠢߥ
䊋䉟䉥䊙䉴ᛒ䈇䈜䉎䈱䈪䇮ASTM D6866 䈮䈍䈔䉎ῥ​ Ό῔῟῱҄ ᵟᵫᵱ ඥ․೎ᛒ䈇䈲⠨ᘦ䈚䈭䈇䇯ί ᵟᵱᵲᵫ ᵢᵔᵖᵔᵔᵍᵫᶃᶒᶆᶍᶂ ᵠᵉῥ​ Ό῔῟῱҄ ὸߤ࿕૕♽⾗᧚ߢߪࠣ࡜ࡈࠔࠗ࠻ൻߒᵈ-䋲䋺⌕⦡ᶧ⁁♽⾗᧚䈪 䌌-㽵 䈱ㆡ↪䈏ਇน䈱႐ว䌌-㽶 䈱⠨䈋ᣇ䉕ㆡ↪䍃ᬌ⸛䈜䉎䇯ߚ AMS ᴺ߇ታ↪ᕈߦንࠎߢ޿ࠆߎ
࿑㧞 14㧯᷹ቯᴺᮡḰൻࡊࡠ࠻ࠦ࡞᩺
ߣࠍ⏕⹺ߒߚ‫ޕ‬೨⠪ߦߟ޿ߡߪᣂߚߥ
ᮡḰൻ߇น⢻ߢ޽ࠅ‫ߩߘޔ‬Ꮏᬺⷙᩰൻ(JIS ൻ)㧛࿖㓙ᮡḰൻ(ISO ൻ)ࠍ࿖ߦឭ᩺ߒ‫⃻ޔ‬࿷ߘߩవዉ⎇ⓥ㧔ࡈࠖ࡯ࠫࡆ࡝࠹ࠖࠬ࠲࠺ࠖ㧕ࠍㅴ߼ߡ޿ࠆ‫ޕ‬ί ᵪᵋό ᵘˎဪӭửếẬẺ ᵪᵱᵡ ඥ ὸ

On the Possibility of Standardization of Analysis Method of "Bio-Degree" of the Biomass-based Materials
OHSHIMA, K., KIMURA, T., KOSHIISHI, K.
− 34 −

研究発表要旨
9 月 28 日（月）1B01 〜 1B19：口頭発表

B 会場（会議室 2）

1B01

⿥㊀ర⚛ൻቇታ㛎ߦะߌߚࠨࡑ࡝࠙ࡓ౒ᴉǩ✢Ḯ૞ᚑᴺߩ㐿⊒(ℂ⎇࡮ੳ⑼࠮)٤═᧻⦟ፏ‫ޔ‬⠀႐ብశ‫ޔ‬ᳯፒ⼾ߎࠇ߹ߢߩ⿥㊀ర⚛ߩൻቇ⊛⎇ⓥߪ‫↢ߩߘޔ‬ᚑ₸ߩૐߐߣኼ๮ߩ⍴ߐ߆ࠄ 1 ේሶࠍኻ⽎ߣߖߑࠆࠍ߃ߕ‫ޔ‬ਥߦㄦㅦߥᄙᢙ࿁ߩ੤឵෻ᔕࠍ઻߁ࠢࡠࡑ࠻ࠣ࡜ࡈ⎇ⓥߦ㒢ࠄࠇߡ߈ߚ‫ޕ‬᳇⋧♽ߣᶧ⋧♽ߩൻቇታ㛎߇ 104-108 ⇟ర⚛‫ޔ‬112 ⇟ర⚛ߥߤࠍኻ⽎ߣߒߡⴕࠊࠇ‫ޔ‬⚿ᨐߣߒߡ‫ޔ‬112 ⇟ర⚛߹ߢ߇ d ゠㆏ߩଔ㔚ሶࠍ߽ߟㆫ⒖㊄ዻర⚛ߦዻߔࠆߎߣ߇ႎ๔ߐࠇߡ޿ࠆ‫ޔߒ߆ߒޕ‬ൻቇ⊛ᕈ⾰ߩ⹦⚦ߥ⎇ⓥߪ߹ߛߎࠇ߆ࠄߢ޽ࠆ‫ޕ‬ㄭᐕ‫ޔ‬108 ⇟ర⚛‫ޔ‬Hs㧔ࡂ࠶ࠪ࠙ࡓ㧕ࠍኻ⽎ߣߒߚ↹ᦼ⊛ߥታ㛎⚿ᨐ߇ႎ๔ߐࠇߚ[1,2]‫ޔߪࠇߎޕ‬Hs ߇ MO4 ߩൻว‛ߣߥߞߡើ⊒ߔࠆ
ߣ޿߁ 8 ᣖర⚛․᦭ߩᕈ⾰ࠍᜬߟߎߣࠍ⏕⹺ߒߚታ㛎ߢ޽ࠅ[1]‫ߦࠄߐޔ‬ើ⊒ߒߚൻว‛߇᳓㉄ൻ࠽࠻࡝࠙ࡓߣ෻ᔕߔࠆߣ࿕૕⴫㕙ߦ࿕⌕ߔࠆߎߣࠍ߽⏕⹺ߒߚ[2]‫◲ޔߪࠇߎޕ‬ẖࠁ߃ߦ᣿⏕ߦ Hs ߩൻቇ⊛ᕈ⾰㧔๟ᦼ⴫ਛߩዻᕈ㧕ࠍ⺞ߴ‫ޔ‬ൻቇ⒳߹ߢࠍ߽␜ໂߔࠆߎߣ߇ߢ߈ߚ⚿ᨐߢ޽ࠆ‫⎇ᧄޕ‬ⓥߪ‫ޔ‬਎⇇ߢ߽ೋߣߥࠆ⿥㊀ర⚛ߩᴉốࠍ૞ᚑߒ‫ޔ‬㍲ᒻᚑ╬ࠍ߽⼏⺰ߔࠆߎߣࠍ⋡⊛ߣߒߡ߅ࠅ‫ޔ‬Hs ߩ⎇ⓥߩࠃ߁ߦ‫ޔ‬ᣂࠄߒߊ‫◲ߡߒߘޔ‬ẖߥൻቇታ㛎ᚻᴺࠍ⏕┙ߔࠆߎߣߦࠃࠅ‫ޔ‬᣿⏕ߥ⿥㊀ర⚛ߩൻቇ⊛ᕈ⾰ࠍ⺞ߴࠆ߽ߩߢ޽ࠆ‫ޕ‬⿥㊀ర⚛ߩൻቇታ㛎ߢߪ‫ޔ‬⍴ኼ๮ߩᩭ⒳߇ኻ⽎ߣߥࠆߚ߼‫ޔ‬ടㅦེߢวᚑߐࠇߚ↢ᚑᩭࠍࠟࠬ
ࠫࠚ࠶࠻᳇ᵹࠍ೑↪ߒߡㄦㅦߦൻቇቶߦ៝ㅍߒ‫ޔ‬ൻቇಣℂࠍᣉߔ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬ടㅦེߢ↢ᚑߒߚᩭ෻ᔕ↢ᚑ‛ߢ޽ࠆࡑ࡞࠴࠻࡟࡯ࠨ࡯ࠍታ㓙ߩ⿥㊀ర⚛ታ㛎ߣห᭽ߦࠟࠬࠫࠚ࠶࠻ߢൻቇቶ߳
ㄦㅦ៝ㅍߒߚ߽ߩࠍ↪޿ߡㄦㅦߥᴉᲚ✢Ḯߩ૞ᚑᴺߩ㐿⊒ࠍⴕߞߚ‫ޕ‬ANODISC㧔whatman㧕ߣ޿߁ࠕ࡞ࡒ࠽ࠍ೑↪ߒߚỹ⚕਄ߦ೨߽ߞߡ⭯ߊဋ৻ߦ Sm ߩ᳓㉄ൻ‛ᴉốࠍᢝ޿ߡ߅߈‫ߩߘޔ‬਄ߦࠟࠬࠫࠚ࠶࠻ࠍ৻ቯᤨ㑆็߈ઃߌ‫ߩߘޔ‬ᓟ Sm ࠍ฽ࠎߛႮၮᕈṁᶧࠍ਄߆ࠄᵹߒߡๆᒁỹㆊߔࠆߎߣߢᴉố✢Ḯࠍ૞ᚑߒߚ‫ߩߘޕ‬ᓟ‫ޔ‬ᴉố✢Ḯߩ᡼኿⢻㧔ǩ✢ߣǫ✢㧕ࠍ᷹ቯߒߡ෼₸╬ࠍ᳞߼ߚ‫ޕ‬න⚐ߦ࿕૕⴫㕙਄ߦࠟࠬࠫࠚ࠶࠻ࠍ็߈ઃߌߚߛߌߢߪ‫࡞࠱ࡠࠕࠛޔ‬㧔KCl㧕ߩ⫾Ⓧߣߣ߽ߦǩ✢᷹ቯߦ߅ߌࠆࠛࡀ࡞ࠡ࡯ಽ⸃⢻߇ᖡߊߥࠆߩߦኻߒߡ‫ᧄޔ‬ᚻᴺߢ૞ᚑߒߚ⹜ᢱߪ㜞ಽ⸃⢻ࠍ⛽ᜬߢ߈ࠆߎߣ߇ಽ߆ߞߚ‫ߩߘޕ‬਄‫ޔ‬ฦర⚛ߩൻቇ⊛ᕈ⾰ߦଐሽߒߚ෼₸ߩᏅࠍ᷹ⷰߔࠆߎߣ߇
ߢ߈ߚ‫ޔߪࠇߎޕ‬ൻቇ⊛ᕈ⾰߇ᧂ⍮ߢ޽ࠆ⿥㊀ర⚛ߩᴉốߦ㑐ߔࠆᕈ⾰ࠍᧄᚻᴺߢ⺞ߴࠆߎߣ߇
ߢ߈ࠆߎߣࠍ␜ໂߒߡ޿ࠆ‫ޕ‬᳓㉄ൻ‛ᴉố✢Ḯ૞ᚑታ㛎ߪ‫ޔ‬ടㅦེࠝࡦ࡜ࠗࡦታ㛎ߛߌߢߥߊ‫࡯ࠨ࡯࡟࠻࠴࡞ࡑޔ‬ṁᶧࠍ↪
޿ߚㅢᏱߩᚻᴺߢ߽ⴕߞߚ‫ࠕ࠾ࡕࡦࠕޕ‬᳓߿ 0.1-6 M ᳓㉄ൻ࠽࠻࡝࠙ࡓ᳓ṁᶧߥߤࠍ↪޿ߡ᳓㉄ൻ‛ᴉốࠍ૞ᚑߒ‫ޔ‬ᴉᲚߩ෼₸ߩᄌൻࠍ᷹ⷰߒ‫ޔ‬ฦర⚛ߩ᳓㉄ൻ‛ᴉốߩᕈ⾰ࠍ⺞ߴߚ‫ޔߚ߹ޕ‬104 ⇟ర⚛ߩ Rf㧔࡜ࠩࡎ࡯ࠫ࠙ࡓ㧕ࠍ╙৻ߩ⎇ⓥኻ⽎ߣቯ߼‫ޔ‬หߓ 4 ᣖర⚛ߢ޽ࠆ Zr ߣ Hf ߩ᡼኿ᕈ࠻࡟࡯ࠨ࡯88Zr‫ޔ‬175Hf ࠍ↪޿ߡ᳓㉄ൻ‛ᴉốࠍ૞ᚑ‫ߩߘޔ‬෼₸ࠍ᷹ቯߔࠆߎߣߦࠃࠅ‫ޔ‬Rf ߩታ㛎᧦ઙࠍᬌ⸛ߒߚ‫ޕ‬[1] Ch. E. Düllmann et al., Nature 418, 859 (2002).
[2] A. von Zweidorf et al., Radiochim. Acta 92, 855 (2004).
Application of the rapid D source preparation method, samarium hydroxide coprecipitation method, tosuperheavy element chemistry
KASAMATSU, Y., HABA, H., EZAKI, Y.
− 36 −


1B02

    

!"#$%&'()* +,-.(/0* 1234567 +,89:; +,<=>? +,@ABC +,DEFG 1,HTUVWXXYZ[\I +,45-J +,KLMN +,OPQRS + ]^_`a; b cdef ]gh ijdklP_ fmn]^opqr stuvwxdy lw  z{|}~xfstqr zd   

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uvy z{  {g  z{

qrf\z{xdy

|}~lwf  xyb #f whf¡ {vw¢_{£ ¤¥f¦§¨U© {ª«dy¬­ hf ®¯wxdl°gw±t`]gh²f\³l¬­dylw  ´:µ¶·mxy\f]gh±t`¸wop¹uºdy\»%¼½±t`]ghf ¾«¿ {ÀÁÂ³l¬­fÃÄÅÀÁ¹uºdy\Æ ÇcdÈÉ Ê]b fÇË]gh ±t` ÌxwÍdkl¹Îdy¸edf\Æ±t`]gh¹ÏÐcÓÑoÒ©ÕfÆz{Ö×ÔÁf¦§¨U©Õ

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f(&&{vwãäåæl{çRè ) *y±t`]ghlw¦éê]h¹ëìídÖ×ßopî(zxwf ]gh±t` +  á !  z{  \Æ2ÈÉõöyÆ  Ó  ¦§¨U©Õ- ! "Ûdkl¹ºbvyk åæf  z{ #$ %$&  #"#$ %$&!
¦éê]h ñòÆ óôlRècdy) ïe wàÀ fð) * %! (&&  ! ,$-./$#! %. 0  1 !
2$ $3-/&# 43 ./&-#-4&5/$. /6$-& -7 4&-85  #3    3 /-#--483 -7
% ! ! 9%% ! %%: ;! <:;% %! %%;%9 <! ": ! % !
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− 37 −

1B03

᳇⋧ൻቇಽ㔌ߐࠇߚൻว‛ߩ៝ㅍߦ㑐ߔࠆ⎇ⓥᣂẟᄢℂ1‫ޔ‬ᯏེಽᨆ࠮2‫ޔ‬ේሶജᯏ᭴3 ٤᧛ጊ⵨ผ1‫ޔ‬ᓟ⮮⌀৻2‫ޔ‬Ꮏ⮮ਭᤘ1‫ޔ‬Ⴆ↰๺᣿3‫ޔ‬ᵻ੗㓷ੱ3‫⼾ޔ‬᎑ෘผ3‫ޔ‬૒⮮ື਽3‫ޔ‬᳗⋡⻀৻㇢3‫⿥ ޤߦ߼ߓߪޣ‬㊀ర⚛ߩൻቇ⊛ᕈ⾰ࠍ⺞ߴࠆታ㛎ᚻᴺߩ৻ߟߦ㧘⋡⊛ర⚛ߩើ⊒ᕈൻว‛ࠍ↢ᚑߒࠞ࡜ࡓ⴫㕙ߣߩๆ⌕࡮⣕㔌ߩ᜼േࠍ⺞ߴࠆ᳇⋧ൻቇಽ㔌ᴺ߇޽ࠅ‫ޔ‬ᒰ⎇ⓥቶߢߪ㧘ߎ
ࠇ߹ߢ 4 ᣖర⚛(Zr,Hf ߅ࠃ߮ Rf)Ⴎൻ‛ࠍኻ⽎ߣߒߚታ㛎ࠍⴕߞߡ߈ߚ‫ޕ‬Rf ߩࠃ߁ߥ⿥㊀ర⚛
ߩ߶ߣࠎߤߪ⍴ኼ๮ߩࠕ࡞ࡈࠔ᡼኿૕ߢ޽ࠆߚ߼‫ޔ‬หቯ࡮ቯ㊂ߩߚ߼ߦߪ╬᷷ࠞ࡜ࡓࠍㅢㆊ
ߒߚើ⊒ᕈൻว‛ࠍᬌ಴ㇱߦㄦㅦ߆ߟല₸ࠃߊౣ៝ㅍߒߥߊߡߪߥࠄߥ޿‫߹ࠇߎޔߒ߆ߒޕ‬ߢౣ៝ㅍ᧦ઙߦ㑐ߔࠆ⹦⚦ߥႎ๔ߪߥߐࠇߡ޿ߥ޿‫⎇ᧄޔߢߎߘޕ‬ⓥߢߪើ⊒ᕈൻว‛ߦኻߔࠆౣ៝ㅍⵝ⟎ࠍ㐿⊒ߒ‫ᦨޔ‬ㆡߥ៝ㅍ᧦ઙࠍᓧࠆߎߣࠍ⋡⊛ߦታ㛎ࠍⴕߞߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬Fig.1 ߦ᳇⋧ൻቇታ㛎ⵝ⟎ߩ᭎⇛࿑ࠍ␜ߔ‫ޕ‬ടㅦེߦࠃࠆታ㛎ߩ೨ߦ252Cfࠍ↪޿ߚ
off-lineታ㛎ࠍⴕߞߚ‫ޕ‬252Cf߆ࠄߩ⥄⊒ᩭಽⵚ↢ᚑ‛ߪࠞ࡯ࡏࡦࠢ࡜ࠬ࠲࡯ߦࠃࠅ෻ᔕㇱ߳៝ㅍߐࠇࠆ‫↢ߢߎߘޕ‬ᚑߒߚើ⊒ᕈൻว‛ߪ╬᷷ㇱࠍㅢㆊߒߚߩߜ࡝ࠢ࡜ࠬ࠲࠴ࠚࡦࡃ࡯ౝߢ
ࠛࠕࡠ࠱࡞ߦઃ⌕ߒ‫ޔ‬ౣ៝ㅍߐࠇࠆ‫ޕ‬ౣ៝ㅍߐࠇߚᩭ⒳ߩหቯ࡮ቯ㊂ߪ࡝ࠢ࡜ࠬ࠲࡯࠴ࠚࡦ
ࡃ࡯߆ࠄ⚂ 1mਅᵹߩ᝝㓸ㇱߦߡHPGeᬌ಴ེߦࠃࠅࠟࡦࡑ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝ߦࠃࠅⴕߞߚ‫ޕ‬ࠛࠕࡠ࠱࡞ߪ‫ޔ‬ဋ৻ߦ࠴ࠚࡦࡃ࡯ౝߦᵹࠇㄟ߻ࠃ߁ 4 ▎ᚲ߆ࠄ࠴ࠚࡦࡃ࡯ౝߦዉ౉ߒߚ‫⋥ޕ‬ᓘ 40mmߩ࡝ࠢ࡜ࠬ࠲࠴ࠚࡦࡃ࡯ߪ㐳ߐࠍ 50 ,100,150 mmߣᄌ߃ࠆߎߣߢ૕Ⓧࠍᄌ߃ࠄࠇࠆ
ࠃ߁ߦߒߚ‫ߩࠬࠟࡗ࡝ࡖࠠޕ‬⒳㘃ߣᵹ㊂‫ߩ࡞࠱ࡠࠕࠛޔ‬⒳㘃‫࡯ࡃࡦࠚ࠴࠲ࠬ࡜ࠢ࡝ޔ‬૕Ⓧߥߤࠍᄌൻߐߖ‫ޔ‬ᩭಽⵚ↢ᚑ‛ߩౣ៝ㅍല₸ࠍ᳞߼ߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ޤ‬off-lineታ㛎ߢߪ‫ޔ‬Ⴎൻ᳓⚛ߦࠃࠅើ⊒ᕈൻว‛ࠍ↢ᚑߔࠆᩭ⒳ߩ߁ߜǫ✢ࠬࡍࠢ࠻࡞ਛߢࡇ࡯ࠢ߇⷗߿ߔ޿101Tc,104Tc,107Rhߦߟ޿ߡ‫ޔ‬ౣ៝ㅍ᧦ઙࠍᬌ⸛ߒߚ‫ޕ‬ౣ៝ㅍല₸ߪ‫╬ޔ‬᷷ㇱߩ⋥ᓟߢ಄ළ᝝㓸ߒߚ㓙ߩ᡼኿⢻ߦኻߔࠆ‫࡯ࡃࡦࠚ࠴࡯࠲ࠬ࡜ࠢ࡝ޔ‬ਅᵹߩ᝝㓸ㇱߢߩ᡼኿⢻ߩᲧߣߒߚ‫⚿ߩߘޕ‬ᨐ‫ߪࠬࠟࡗ࡝ࡖࠠޔ‬HeࠃࠅN 2 ࠍ૶↪ߒߚ߶߁߇ౣ៝ㅍല₸ߪ㜞ߊߥߞߚ‫ࠍ࡞࠱ࡠࠕࠛޕ‬KCl‫ࠍࠬࠟࡗ࡝ࡖࠠޔ‬N 2 ‫ࠬࠟޔ‬ᵹ㊂ 1.4 L/min‫ࡃࡦࠚ࠴࡯࠲ࠬ࡜ࠢ࡝ޔ‬࡯ߩ㐳ߐ 50 mmߩߣ߈‫ޔ‬ౣ៝ㅍല₸ߪ⚂ 40㧑ߣߥߞߚ‫⻠ޕ‬Ṷߢߪ⹦⚦ߥታ㛎⚿ᨐߦߟ޿ߡႎ
๔ߔࠆ‫ޕ‬

Research on transportation of chemical compounds after gas phase chemistry
MURAYAMA, H.,GOTO, S., KUDO, H.,NAGATA, K., ASAI, M.,TOYOSIMA, A.,SATO, T.,NAGAME,Y.
− 38 −

1B04

࡟࡯ࠩ࡯ࠗࠝࡦൻ⾰㊂ಽᨆᴺߩ᳇⋧ൻቇಽ㔌ᴺ߳ߩㆡ↪ᣂẟᄢ㒮⥄ὼ ‫ޔ‬ᣂẟᄢᯏེಽᨆ࠮  ᣂẟᄢℂ  ٤⨃㊁㓶ᄥ ‫ޔ‬ᓟ⮮⌀৻ ‫ޔ‬Ꮏ⮮ਭᤘ ‫ޤ⸒✜ޣ‬
 ⿥ࠕࠢ࠴ࡁࠗ࠼ర⚛ߩൻቇ⊛ᕈ⾰ߪ‫゠ޔ‬㆏㔚ሶߦኻߔࠆ⋧ኻ⺰ലᨐߩჇᄢߦࠃࠅหᣖర⚛ߩൻቇ⊛ᕈ⾰ߩ௑ะ߆ࠄㅺ⣕ߔࠆน⢻ᕈ߇␜ߐࠇߡ޿ࠆ‫࠼ࠗࡁ࠴ࠢࠕ⿥ޕ‬ర⚛ߩൻቇ⊛ᕈ⾰ࠍ⺞ߴࠆߚ߼ߩᚻᴺߩ৻ߟߦ᳇⋧ൻቇಽ㔌ᴺ߇޽ࠅ‫ߢ߹ࠇߎޔ‬ᒰ⎇ⓥቶߢߪᄙߊߩ㊄ዻߣើ⊒ᕈ㍲૕ࠍᒻᚑߔࠆ dipyvaloylmethane (DPM, M=184.23) ࠍ↪޿ߚ⎇ⓥࠍⴕߞߡ߈ߚ‫ޔߒ߆ߒޕ‬ൻቇ⊛ᕈ⾰ࠍ⼏⺰ߔࠆߚ߼ߦߪ↢ᚑߒߚើ⊒ᕈൻว‛ߩൻቇᒻࠍ᣿ࠄ߆ߦߔࠆߎߣ߇᳞߼ࠄࠇߡ޿ߚ‫ޕ‬ ᧄ⎇ⓥߢߪ‫ޔ‬ើ⊒ᕈൻว‛ࠍߥࠆߴߊಽ⸃ߐߖߕ‫ޔ‬ㆬᛯᕈߩ㜞޿‫ޔ‬ᵄ㐳นᄌ࡟࡯ࠩ࡯ࠍ↪޿ߚ౒㡆ᄙశሶࠗࠝࡦൻ (REMPI) ⾰㊂ಽᨆᴺߩㆡ↪ߦߟ޿ߡᬌ⸛ࠍⴕߞߡ޿ࠆ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬ࠗࠝࡦ࠴ࠚࡦࡃ࡯ࠍ↪޿ߚએ೨ߩ⎇ⓥߦࠃࠅ‫ޔ‬DPM ↱᧪ࠗࠝࡦᒝᐲߩ࡟࡯ࠩ࡯ᵄ㐳ଐሽᕈ߇⏕⹺ߐࠇߡ޿ࠆ‫ ߢߎߘޕ‬REMPI ߦࠃࠅ↢ᚑߔࠆࠗࠝࡦ
⒳ࠍ᣿ࠄ߆ߦߔࠆߚ߼ߦ⾰㊂ಽᨆࠍⴕߞߚ‫ޕ‬
 60 ͠ߦട᷷ߒߚ DPM ࠍ He ࠟࠬߢࡃࡉ࡝ࡦࠣߒ‫ޔ‬
REMPI ↪ߦᡷㅧߒߚੑ㊀෼᧤ဳ⾰㊂ಽᨆེౝߩࠗࠝ
ࡦḮ߳ߣዉ౉ߒߚ‫ޕ‬REMPI ߦߪ YAG ࡟࡯ࠩ࡯ബ⿠⦡
⚛࡟࡯ࠩ࡯ (LDS698)ߩ╙ੑ㜞⺞ᵄ(330㨪360 nm)ࠍ↪
޿ߚ‫ޕ‬DPM ߩࠗࠝࡦൻࠛࡀ࡞ࠡ࡯ߪ 7.9 eV ߢ޽ࠆߩߢ‫ޔ‬ੑశሶ౒㡆৻శሶࠗࠝࡦൻ߇⿠ߎࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬ ᷹ቯߪછᗧߩ m/z ߩࠗࠝࡦᒝᐲࠍࠗࠝࡦᬌ಴ེߢ᷹
ቯߔࠆ‫↢ࠍࡦࠝࠗޔߚ߹ޕ‬ᚑߒߚ㓙ߩ࡟࡯ࠩ࡯ᒝᐲ߽
หᤨߦࡕ࠾࠲࡯ߢ߈ࠆࠃ߁ߦߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ ฝ࿑ߪᵄ㐳 320.0 nm ߩ࡟࡯ࠩ࡯ߦࠃࠅ DPM ࠍࠗࠝࡦൻߐߖ‫ ࠆ޽ߢࡦࠝࠗ࠻ࡦࡔࠣ࡜ࡈߩߘޔ‬m/z= 57 ߦߟ޿ߡ޽ࠆ৻ቯߩ࡟࡯ࠩ࡯ᒝᐲߦኻߔࠆࠗࠝࡦᒝᐲ
ࠍ᷹ቯߒߚ⚿ᨐߢ޽ࠆ‫࡯ࠩ࡯࡟ޕ‬ᒝᐲࠍᄢ߈ߊߒߡ޿
ߊߣ(range1ĺ2ĺ3)‫ࡦࠝࠗޔ‬ᬌ಴ེ߆ࠄߩࠪࠣ࠽࡞߽
࿑. ࡟࡯ࠩ࡯ᒝᐲࠬࡍࠢ࠻࡞(਄)෸߮
ኻᔕߒߡᄢ߈ߊߥߞߡ޿ߊߎߣ߇⏕⹺ߢ߈ߚ‫ ߡߒߦ߁ࠃߩߎޕ‬છᗧߩ࡟࡯ࠩ࡯ᒝᐲߦ߅ߌࠆࠗࠝࡦ
ᒝᐲಽᏓ(ਅ)ࠗࠝࡦᒝᐲߩ࡟࡯ࠩ࡯ࡄࡢ࡯ଐሽᕈࠍ⺞ߴࠆߎߣߢࠗࠝࡦൻ
߇ REMPI ߦࠃࠆ߽ߩ߆ߤ߁߆್ᢿߢ߈ࠆߣ⠨߃ࠄࠇࠆ‫⻠ޕ‬Ṷߢߪઁࡈ࡜ࠣࡔࡦ࠻ࠗࠝࡦߩ⚿ᨐߥߤߦߟ޿ߡ⊒⴫ߔࠆ੍ቯߢ޽ࠆ‫ޕ‬Application of laser ionization mass spectroscopy for gas phase chemistry
SHIGENO, Y., GOTO, S., KUDO, H.

− 39 −

1B05

HF/HNO3 ᳓ṁᶧ♽ߦ߅ߌࠆ 105 ⇟ర⚛ Db ߩ㒶ࠗࠝࡦ੤឵᜼േ
(ේሶജᯏ᭴࡮వ┵ၮ␆⎇ⓥ࠮ 1‫ޔ‬ℂ⎇࡮ੳ⑼࠮ 2‫ޔ‬㚂ㇺᄢ㒮࡮ℂᎿ 3 ‫ޔ‬㒋ᄢ㒮࡮
ℂ 4‫ޔ‬ᣂẟᄢ࡮ℂ 5‫ޔ‬㊄ᴛᄢ㒮࡮⥄ὼ⑼ቇ 6‫ޔ‬㊄ᴛᄢ࡮ℂᎿ 7)٤═᧻⦟ፏ 1,2‫⼾ޔ‬᎑ෘผ 1‫ޔ‬ᵻ੗㓷ੱ 1‫ޔ‬Ⴆ↰๺᣿ 1‫ޔ‬Li Zijie1‫ޔ‬⍹੗ᐽ㓶 1‫ޔ‬૒⮮ື਽ 1‫⷏ޔ‬ਛ৻ᦶ 1‫⩵ޔ‬ᳰ⾆ብ 1‫ޔ‬⠀႐ብశ 2‫ޔ‬Ꮏ⮮␭↢ 2‫ޔ‬૒⮮ᦸ 1,2‫ޔ‬ᄢᶆᵏ༹ 3‫⑺ޔ‬ጊ๺ᒾ 3‫ޔ‬ᄢᳯ৻ᒄ 4‫⮮ޔ‬ᴛᒄᐘ 4‫◉ޔ‬ේෘ 4‫ޔ‬ᓟ⮮⌀৻ 5‫ޔ‬Ꮏ⮮ਭᤘ 5‫ᧁ⨹ޔ‬ᐙᄦ 6‫⷏ޔ‬Ꮉᕺ 6‫ޔ‬ᮮጊ᣿ᒾ 7‫ޔ‬᳗⋡⻀৻㇢ 1ේሶ⇟ภ߇ 104 ⇟એ਄ߩ⿥ࠕࠢ࠴ࡁࠗ࠼ర⚛㧔⿥㊀ర⚛㧕ߪ‫ ╙ޔ‬7 ๟ᦼߩ 6d ㆫ⒖㊄ዻర⚛
ߦ⋧ᒰߔࠆߎߣ߇ᦨㄭಽ߆ߞߡ߈ߡ߅ࠅ‫ߩߘޔ‬ൻቇ⊛ᕈ⾰ߩ⸃᣿ߦᄢ߈ߥ⥝๧߇ነߖࠄࠇߡ
޿ࠆ‫ޕ‬ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴㧔ේሶജᯏ᭴㧕ߢߪ‫ ߦߢ߹ࠇߎޔ‬104 ⇟ర⚛ Rf ߩࡈ࠶ൻ‛㍲ᒻᚑࠍࠗࠝࡦ੤឵ᴺߦࠃߞߡ⹦⚦ߦ⺞ߴࠆߎߣߦᚑഞߒߡ޿ࠆ[1]‫࠶ࡈߩߘޔߡߒߘޕ‬ൻ‛㍲ᒻᚑߩ᭽ሶ߇หᣖర⚛ߣߪᄢ߈ߊ⇣ߥߞߡ޿ࠆߎߣ߇ಽ߆ߞߚ‫ޕ‬6d ㆫ⒖㊄ዻర⚛ߩࡈ࠶ൻ‛㍲ᒻᚑߩ♽⛔⊛⎇ⓥࠍㅴ߼‫࠼ࠗࡁ࠴ࠢࠕ⿥ޔ‬ర⚛ߩൻቇ⊛ᕈ⾰ߩℂ⸃ࠍࠃࠅᷓ߼ࠆߚ߼ߦ‫ޔ‬ᚒ‫ࠅࠃߪޘ‬㊀޿ 105 ⇟ర⚛㧔Db‫ࡓ࠙࠾ࡉ࠼ޔ‬㧕߳ߣ⎇ⓥኻ⽎ࠍ᜛ߍߡ޿ࠆ‫ޕ‬వⴕ⎇ⓥߢߪ‫ޔ‬
14 M HF ਛߢߩ Db ߩ㒶ࠗࠝࡦ੤឵᜼േࠍ⺞ߴ‫ޔ‬หᣖర⚛ߣߪ⇣ߥࠆ᜼േࠍ᷹ⷰߒߚ[2]‫ᧄޕ‬⎇ⓥߢߪ‫ޔ‬HF/HNO3 ᷙ㉄ࠍ↪޿ߡᏗ⭯ߥࡈ࠶ൻ‛ࠗࠝࡦỚᐲ᧦ઙਅߢߩ Db ߩ㒶ࠗࠝࡦ੤឵
ታ㛎ࠍⴕ޿‫࠶ࡈߩߘޔ‬ൻ‛㍲ᒻᚑߩ᭽ሶࠍ⺞ߴߚ‫ޕ‬ේሶജᯏ᭴ߩ࠲ࡦ࠺ࡓടㅦེࠍ೑↪ߒߚ 248Cm(19F, 5n)262Db ෻ᔕߦࠃࠅ 105 ⇟ర⚛ 262Db
㧔ඨᷫᦼ㧦34 ⑽㧕ࠍวᚑߒߚ‫ޕ‬วᚑߒߚᩭ⒳ࠍㄦㅦߦൻቇቶ߳ࠟࠬࠫࠚ࠶࠻៝ㅍߒ‫ࡦࠗ࡜ࡦࠝޔ‬ㄦㅦࠗࠝࡦ੤឵࡮ǩ✢ᬌ಴ⵝ⟎㧔AIDA-II㧕ࠍ↪޿ߡ HF/HNO3 ᳓ṁᶧ♽ߢߩ㒶ࠗࠝࡦ੤឵᜼
േࠍ⺞ߴߚ‫ޕ‬หᣖర⚛ߢ޽ࠆ Nb ߥࠄ߮ߦ Ta ߩ㒶ࠗࠝࡦ੤឵᜼േ߽‫ࠅࠃޔ‬ᄙ᭽ߥ᳓ṁᶧỚᐲ᧦ઙਅߢ⺞ߴ‫⚿ߩߘޔ‬ᨐࠍၮߦ Db ߩࠗࠝࡦ੤

105឵෻ᔕߦ߅ߌࠆ Kd ୯ࠍ᳞߼ߚ‫ޕ‬ᓧࠄࠇߚ⚿ᨐ

104ߩ৻ㇱࠍหᣖర⚛ߢ޽ࠆ Nb, Ta ߥࠄ߮ߦ Pa ߩ੹࿁ߩታ㛎ߢᓧࠄࠇߚ Db ߩ Kd ୯߇‫ޔ‬๟ᦼ⴫਄ߢᦨ߽ㄭ޿หᣖర⚛ Ta㧔╙ 6 ๟ᦼ㧕ߩ୯ࠃࠅ߽ዊߐߊ‫ࠅࠃޔ‬シ޿หᣖర⚛ߩ Nb ߿ᡆหᣖర⚛ߢ޽ࠆ Pa ߩ୯ߦㄭ޿ߎߣ߇ಽ߆ߞߚ‫ޕ‬ᧄ⊒⴫ߢߪ‫⚿ߩࠄࠇߎޔ‬ᨐ߆ࠄ Db ߩࡈ࠶ൻ‛㍲ᒻᚑ‫ޔ‬෸߮㒶ࠗࠝࡦ੤឵᮸⢽ߣߩ⋧੕૞↪
ߦߟ޿ߡ⼏⺰ߔࠆ‫ޕ‬

Kd / mL g-1

103⚿ᨐߣߣ߽ߦ Fig. 1 ߦ␜ߔ‫ޕ‬[1] Y. Nagame et al., Radiochim. Acta 93, 519 (2005).
[2] K. Tsukada et al., Radiochim. Acta 97, 83 (2009).

102
101
100
10-2

: Nb Batch: Nb Column: Ta Batch: Pa Batch: Db Column: Db limit

10-1[NO3-] / M

100Fig. 1: Distribution coefficients, Kd, of
Nb, Ta, Pa, and Db on the anion-exchange
resin in HF/HNO3 solutions.

Anion-exchange behavior of element-105, Db in HF/HNO3 mixed solution
KASAMATSU, Y., TOYOSHIMA, A., ASAI, M., TSUKADA, K., LI, Z., ISHII, Y., SATO, T. K.,NISHINAKA, I., KIKUCHI, T., HABA, H., KUDOU, Y., SATO, N., OURA, Y., AKIYAMA, K., OOE, K.,
FUJISAWA, H., SHINOHARA, A., GOTO, S., KUDO, H., ARAKI, M., NISHIKAWA, M., YOKOYAMA,
A., NAGAME, Y.
− 40 −

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42 8‫ߩ 'ޔ‬ಽ㈩ᲧߩႮ㉄Ớᐲଐሽᕈࡊࡠ࠶࠻ߔࠆߣ‫ޔ‬8 ߢ௑߈  B  ‫ߢ 'ޔ‬௑᛽಴೷Ớᐲ㧦 ߈  B ߩ⋥✢߇ᓧࠄࠇ‫ߩ ߽ࠄߜߤޔ‬㔚⩄ࠍ߽ߞߚ㍲૕߇᛽಴ߐࠇߡ޿ࠆߎߣ߇␜ߐࠇߚ‫੹ޕ‬ᓟߐࠄߦࡊࡠ࠻ࡦỚᐲ৻ቯਅߦ߅ߌࠆಽ㈩ᲧߩႮൻ‛ࠗࠝࡦỚᐲଐሽᕈࠍ⺞ߴ‫ޔ‬᛽಴ൻቇ⒳ߩ․ቯࠍⴕ߁੍ቯߢ޽ࠆ‫ޕ‬‫ޣ‬ෳ⠨ᢥ₂‫ޤ‬* + ᄢᳯઁ ╙࿁᡼኿ൻቇ⸛⺰ળ !  
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− 42 −

1B08

㟁Ẽ໬Ꮫⓗᡭἲ࡟ࡼࡿ  ␒ඖ⣲࣓ࣥࢹࣞࣅ࣒࢘ࡢ㑏ඖཎᏊຊᶵᵓ ࠊ㜰኱㝔⌮ ࠊ⌮◊ோ⛉ࢭ ‫ۑ‬㇏ᔱཌྐ ࠊሯ⏣࿴᫂ ࠊὸ஭㞞ே ࠊబ⸨ဴஓ ࠊᮤᏊᮽ ࠊబ⸨ᮃ ࠊ⳥ụ㈗ᏹ ࠊ໭㎷❶ᾈ ࠊỌ┠ㅍ୍㑻 ࠊ኱Ụ୍ᘯ ࠊ⠛ཎཌ ࠊ➟ᯇⰋᓫ ࠊ⩚ሙᏹග 

Eluted Radioactivity / %࠙ࡣࡌࡵ࡟ࠚ㔜࢔ࢡࢳࣀ࢖ࢻඖ⣲࡛ࡣࠊ5f ㌶㐨ࡢᏳᐃ໬࡟ࡼࡗ࡚ప㓟໬≧ែࡀẚ㍑ⓗᏳᐃ࡟࡞ࡿࠋ≉࡟ 101 ␒ඖ⣲࣓ࣥࢹࣞࣅ࣒࢘(Md)ࡣ 2 ౯࢖࢜ࣥࡔࡅ࡛࡞ࡃ 1 ౯࢖࢜ࣥ࡟㑏ඖࡉࢀࡿྍ⬟ᛶࡀ࠶ࡾࠊ㠀ᖖ࡟⯆࿡῝࠸ࠋࡇࢀࡲ࡛ᡃࠎࡣࢩࣥࢢࣝ࢔ࢺ࣒ࣞ࣋ࣝ࡟࠾ࡅࡿ㟁Ẽ໬Ꮫⓗᡭἲࢆ㛤Ⓨࡋ[1]ࠊ102 ␒ඖ⣲ࣀ࣮࣒࣋ࣜ࢘ࡢ㓟໬࡟ᡂຌࡋࡓ[2]ࠋᮏ◊✲࡛ࡣࠊ㟁Ẽ໬Ꮫⓗᡭἲࢆ⏝࠸࡚ 101 ␒ඖ⣲࣓ࣥࢹࣞࣅ࣒࢘(Md)ࡢ 2 ౯࡬ࡢ㑏ඖࢆㄪ࡭ࡓࡢ࡛ሗ࿌ࡍࡿࠋ
࠙ᐇ㦂ࠚཎᏊຊᶵᵓࢱࣥࢹ࣒ຍ㏿ჾ᪋タ࡟࠾࠸࡚ࠊ248Cm(11B, 4n)཯ᛂ࡟ࡼࡗ࡚༙ῶᮇ 27 ศࡢ
255
Md ࢆྜᡂࡋࡓࠋ཯ᛂ⏕ᡂ≀ࢆ He/KCl ࢞ࢫࢪ࢙ࢵࢺἲ࡟ࡼࡾ໬Ꮫᐊ࡟ᦙ㏦ࡋࠊ㎿㏿໬Ꮫศ㞳⿦⨨࡟ 10 ศ㛫ᤕ㞟ࡋࡓࠋD⥺ ᐃࡢጉᐖ࡜࡞ࡿ KCl ࢆ㝖ཤࡍࡿࡓࡵ࡟ࠊᤕ㞟≀ࢆ 0.1 M HClỈ⁐ᾮ࡟⁐ゎࡋ࡚ HDEHP ᢳฟ࣒࢝ࣛ(Eichrom ♫ Ln resinࠊ1.6 mm I30 mm)࡟ᑟධࡋࠊKClࢆ⁐ฟࡉࡏࡿ࡜࡜ࡶ࡟ Md3+ࢆ྾╔ࡉࡏࡓࠋᤕ㞟ࠊ⁐ゎࡢᡭ㡰ࢆ 9 ᅇ⧞ࡾ㏉ࡋࡓᚋࠊ࣒࢝ࣛ࡟
྾╔ࡋࡓ Md ࢆ 6.0 M HCl Ỉ⁐ᾮ 350 PL ࢆ⏝࠸࡚ὶࡋฟࡋࡓࠋ⁐ฟᾮࢆ Ta ─࡟཰㞟ࡋࠊHe࢞ࢫ࡜ࣁࣟࢤࣥࣛࣥࣉࢆ⏝࠸࡚ᙉ⇕ࡋ࡚⵨Ⓨ஝ᅛࡋࡓᚋࠊ0.1 M HCl Ỉ⁐ᾮ 220 PL ࡟⁐ゎࡋࡓࠋࡇࡢ⁐ᾮࢆࣇ࣮ࣟ㟁ゎ࣒࢝ࣛ⿦⨨࡟ᑟධࡋࠊ
80
0.1 M HCl Ỉ⁐ᾮ 1500 PL ࢆ⏝࠸࡚⁐㞳ᒎ㛤ࡋࡓࠋ(a) 0 V3 M HCl
0.1 M HCl70
࢝ ࣛ ࣒ స ⏝ 㟁 ᴟ ࡟ ࡣ 0 㹼 㸫 0.9 V ࡢ 㟁 ᅽ
3+
250
60
Bk
(Ag/AgCl ཧ↷㟁ᴟ)ࢆ༳ຍࡋࡓࠋ⁐ฟᾮࢆ 300 PL50
85 2+
ࡎࡘ 5 ࡘ࡟ศྲྀࡋࠊูࠎࡢ Ta ─࡟཰㞟ࡋࡓࠋࡑ
40
Sr
3+
255
30
ࡢᚋࠊ3 M HCl Ỉ⁐ᾮࢆ࣒࢝ࣛ㟁ᴟ࡟ᑟධࡋࠊ࢝
Md
20
࣒ࣛ㟁ᴟ࡟྾╔ࡋࡓ࢖࢜ࣥࢆὶࡋฟࡋࡓࠋ⁐ฟ
10
ᾮࢆ 300 PL ࡎࡘ 2 ࡘ࡟ศྲྀࡋࠊูࡢ Ta ─࡟཰
080㞟ࡋࡓࠋࡇࢀࡽࡢ⁐ฟᾮࢆ⵨Ⓨ஝ᅛࡋࡓᚋࠊPIPS(b) -0.9 V
250
3+
70
Bk
᳨ฟჾࢆ⏝࠸࡚ 7 ࡘࡢ Ta ─ࡢD⥺ ᐃࢆ⾜ࡗࡓࠋ60࠙⤖ᯝ࡜⪃ᐹࠚணഛⓗ⤖ᯝ࡛ࡣ࠶ࡿࡀࠊᅗ 1(a)ࠊ
50
255
2+
(b)࡟ࡑࢀࡒࢀ༳ຍ㟁ᅽ 0 V ୪ࡧ࡟㸫0.9 V ࡛ほ
Md
40
255
250
85 2+
ࡉࢀࡓ Md ࡜ Bk (๪཯ᛂ⏕ᡂ≀)ࡑࡋู࡚ࡢ
Sr
30
85 2+
ᐇ㦂࡛ᚓࡓ Sr ࡢ⁐ฟᣲືࢆ♧ࡍࠋ༳ຍ㟁ᅽ 0
20
10
V ࡛ࡣࠊMd ࡣ 0.1 M HCl Ỉ⁐ᾮ࡛⁐ฟࡏࡎࠊ3.0
3+0
M HCl ࡛⁐ฟࡋࡓࠋࡇࡢᣲືࡣ Bk ࡜ྠࡌ࡛࠶
0
500
1000
1500
2000
ࡾࠊMd ࡀ 3 ౯࢖࢜ࣥ࡜ࡋ࡚Ỉ⁐ᾮ୰࡟Ꮡᅾࡍࡿ
Eluted Volume / PL
255
250஦ࢆ♧ࡋ࡚࠸ࡿࠋ୍᪉ࠊ㸫0.9 V ࡛ࡣࠊMd ࡣ 0.1 Fig. 1. Elution behavior of Md and Bk at-0.9 VM HCl Ỉ⁐ᾮ࡛⁐ฟࡋࡓࠋࡇࡢ⁐ฟᣲືࡣ Sr2+ the applied potentials of (a) 0 V and (b)(vs. Ag/AgCl) together with that of 85Sr2+ for࡜ྠࡌ࡛࠶ࡾࠊ2 ౯࡟㑏ඖࡉࢀࡓ஦ࡀࢃ࠿ࡿࠋ
comparison.
࠙ཧ⪃ᩥ⊩ࠚ
[1] A. Toyoshima et al., Radiochim. Acta 96, 323-326 (2008).
[2] A. Toyoshima et al., J. Am. Chem. Soc. 131, 9180-9181 (2009).
Reduction of element 101, mendelevium, with flow electrolytic column chromatography
TOYOSHIMA, A., TSUKADA, K., ASAI, M., SATO, T. K., LI, Z. J., SATO, N., KIKUCHI, T.,
KITATSUJI, Y., NAGAME, Y., OOE, K., SHINOHARA, A., KASAMATSU, Y., HABA, H.
− 43 −

− 44 −

1B10

3 ଔࠕࠢ࠴ࡁࠗ࠼ߩᵴᕈ὇߳ߩㆬᛯ⊛ๆ⌕ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴ ේሶജၮ␆Ꮏቇ⎇ⓥㇱ㐷 ٤᦭㒋 ⌀‫ޔ‬ᷰㆺ㓷ਯ‫⾆᧛ᧁޔ‬ᶏ‫↪૶ޤ⸒✜ޣ‬ᷣߺᩭΆᢱߦ฽߹ࠇࠆ 3 ଔࠕࠢ࠴ࡁࠗ࠼㧔An(III)㧕ߪ‫ޔ‬㐳ඨᷫᦼߩǩ✢᡼಴ᩭ⒳ߢ
޽ࠆߚ߼‫ޔ‬୘೎ߦಽ㔌ߒ‫ޔ‬ಣಽߐࠇࠆߎߣ߇ᦸ߹ߒ޿‫ޔߒ߆ߒޕ‬หᤨߦ฽߹ࠇࠆ࡜ࡦ࠲ࡁࠗ࠼㧔Ln(III)㧕ߣൻቇ⊛᜼േ߇ૃߡ޿ࠆߎߣ߆ࠄ‫ߩߘޔ‬ಽ㔌ߪ㔍ߒ޿‫ᦨޕ‬ㄭᚒ‫㉄ޔߪޘ‬ᕈṁᶧਛߩ An(III)߇ Ln(III)ߦᲧߴߡ‫ޔ‬ᵴᕈ὇ߦㆬᛯ⊛ߦๆ⌕ߐࠇࠆߎߣࠍ⷗޿ߛߒߚ 1)‫⎇ᧄޕ‬ⓥߢߪ‫⴫ޔ‬㕙㉄ൻಣ
ℂࠍⴕߞߚᵴᕈ὇㧔CAox㧕߅ࠃ߮ᧂಣℂߩᵴᕈ὇㧔CA㧕߳ߩ An(III)߅ࠃ߮ Ln(III)ߩ⎣㉄ṁᶧ߆ࠄߩๆ⌕᜼േࠍ⺞ߴ‫ߩࠄࠇߘޔ‬ๆ⌕ᯏ᭴ߦߟ޿ߡᬌ⸛ࠍⴕߞߚ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬ᵴᕈ὇㧔๺శ⚐⮎㧦߅߇ߊߕ‫ޔ‬ZnCl2 ⾮ᵴ㧕ߩ㉄ൻಣℂߦߪ‫ޔ‬Ớ⎣㉄㧔60͠㧕ࠍ↪޿ߚ‫ޕ‬ᵴᕈ὇㧔50 mg㧕ߣ࠻࡟࡯ࠨ㊂ߩ Am-241 ߅ࠃ߮ Eu-152 ࠍ฽߻⎣㉄ṁᶧ㧔2 ml㧕ࠍ 25͠ߢ 3 ᤨ㑆ᝄࠅᷙߗߚ‫ߩߘޕ‬ᓟ‫ޔ‬᳓⋧ࠍಽขߒ‫ޔ‬Ge ඨዉ૕ᬌ಴ེࠍ↪޿ߡߘࠇࠄߩ᡼኿⢻ࠍ᷹ቯߔࠆߣ౒ߦ‫ޔ‬pH ࠍ᷹ቯߒߚ‫ޕ‬Am(III)߅ࠃ߮ Eu(III)ߩಽ㈩ଥᢙ㧔Kd㧕ߪ‫ޔ‬ᰴᑼࠍ↪޿ߡ᳞߼ߚ‫ޕ‬
Kd = (C0㧙C)V/Cm [C0㧦ೋᦼ᡼኿⢻‫ޔ‬C㧦ᐔⴧ᡼኿⢻‫ޔ‬V㧦ṁᶧ૕Ⓧ (ml)‫ޔ‬m㧦ᵴᕈ὇ੇ῎㊀㊂ (g)]‫⚿ޣ‬ᨐ࡮⠨ኤ‫ޤ‬CA ߅ࠃ߮ CAox ߦኻߔࠆ Am(III)߅ࠃ߮ Eu(III)ߩ Kd ߩ pH ଐሽᕈࠍਅ࿑ߦ␜ߔ‫ޕ‬ߤߜࠄߩᵴᕈ὇ߩ႐ว߽ pH ߩჇടߦኻߒߡ߶߷⋥✢⊛ߦ Kd ߇Ⴧടߒߚ‫ࡦ࠻ࡠࡊޔߪߣߎߩߎޕ‬ߣߩ┹੎෻ᔕ߇ሽ࿷ߒ‫ޔ‬૗ࠄ߆ߩ㕒㔚⊛⋧੕૞↪ߦࠃࠅๆ⌕߇⿠ߎߞߡ޿ࠆߎߣࠍ␜ໂߔࠆ‫ޕ‬⴫㕙㉄ൻಣℂߦࠃࠅ‫ߩࠄࠇߘޔ‬Ყ⴫㕙Ⓧߪ CA ߩ 1482 m2/g ߆ࠄ CAox ߩ 873 m2/g ߳ߣᷫዋߒߚ߇‫ޔ‬
Am(III)߅ࠃ߮ Eu(III)ߩ Kd ߪ౒ߦჇᄢߒߚ‫৻ޕ‬ᣇߢ‫ߩࠄࠇߘޔ‬ಽ㔌ଥᢙ㧔SF = Kd(Am)/Kd(Eu)㧕ߪࠃࠅዊߐ޿୯ߣߥߞߚ㧔pH 2.0 ߦ߅޿ߡ 1.9 ߆ࠄ 1.4㧕‫ޕ‬Ớ⎣㉄ߦࠃࠆ⴫㕙㉄ൻಣℂߢߪ‫ޔ‬ᵴᕈ὇⴫㕙ߦࠞ࡞ࡏࠠࠪ࡞ၮ߿ࠞ࡞ࡏ࠾࡞ၮߥߤߩ㉄⚛࠼࠽࡯ቭ⢻ၮ߇↢ᚑߔࠆߚ߼‫↢ޔ‬ᚑߒߚߘࠇࠄ
ߩቭ⢻ၮߣߩ㕒㔚⊛⋧੕૞↪ߦࠃࠅ‫ࡦࠝࠗޔ‬3

ඨᓘ߇ห⒟ᐲߩ Am(III)/Eu(III)㑆ߢ Kd ߩᏅ߇

CA

5

CAox

ዊߐߊߥߞߚߣ⠨߃ࠄࠇࠆ‫ޔߚ߹ޕ‬CA ࠍ↪޿ߚ႐ว‫৻ޔ‬ㅪߩ Ln(III)㑆ߢߘࠇࠄߩ Kd ߦ߶ߣࠣ࡜ࡈࠔࠗ࠻㧔὇⚛⚐ᐲ 99.999%㧕ࠍ↪޿ߡ߽

4
log KdࠎߤᏅ߇⷗ࠄࠇߥ޿ߎߣ ‫ޔ‬ቭ⢻ၮࠍᜬߚߥ޿

2
log Kd2)

1

Am(III)߅ࠃ߮ Eu(III)ߩๆ⌕߇⿠ߎࠅ㧔ߘࠇࠄ

3

ߩ Kd ߪ CA ߩߘࠇߦᲧߴߡዊߐ޿㧕‫ޔ‬ห᭽ߦ
Am(III)߇ㆬᛯ⊛ߦๆ⌕ߐࠇࠆߎߣ

2)

Am
Eu

ߥߤࠍൊ

0

᩺ߔࠆߣ‫⧐ޔ‬㚅ⅣߩǸ㔚ሶߣߩ⋧੕૞↪ߦࠃࠅಽ㔌߇㆐ᚑߐࠇߡ޿ࠆน⢻ᕈ߇⠨߃ࠄࠇࠆ‫ޕ‬
1)
2)

1

2

3

Am
Eu
4

pHeq.

2

1

2

3

4

pHeq.

࿑ Am(III)߅ࠃ߮ Eu(III)ߩ Kd ߩ pH ଐሽᕈਃଔ࡜ࡦ࠲ࡁࠗ࠼ߣਃଔࠕࠢ࠴ࡁࠗ࠼ߩಽ㔌ᣇᴺ㧔․㗿 2008-277239㧕᦭㒋 ⌀‫ޔ‬ᷰㆺ 㓷ਯᣣᧄේሶജቇળ 2009 ᐕᤐߩᐕળ੍Ⓜ㓸 E17, E18ᧄ⎇ⓥߪ⑼⎇⾌⧯ᚻ⎇ⓥ(B)㧔21760708㧕ߩഥᚑࠍฃߌߚ߽ߩߢ޽ࠆ‫ޕ‬
Selective Adsorption of Trivalent Actinides to Activated Carbon
ARISAKA, M., WATANABE, M., KIMURA, T.
− 45 −

㔚ᭂ⸅ᇦ෻ᔕߦၮߠߊ Np(IV)ߩㄦㅦㆶర⺞⵾

1B11ේሶജᯏ᭴ ‫ޔ‬੩ㇺᖘᖘൻቇ⎇ⓥᚲ  ٤ർㄞ┨ᶈ ‫⾆᧛ᧁޔ‬ᶏ ‫ᧁޔ‬ේჾᨋ ‫ ޤߦ߼ߓߪޣ‬ᄙ᭽ߥේሶଔࠍߣࠆࠕࠢ࠴ࡁࠗ࠼(An)ࠗࠝࡦࠍ⋡⊛ߩේሶଔߦ⺞ᢛߔࠆߎߣߪ‫ޔ‬ㆬᛯ⊛ߥಽ㔌߿♖ኒߥಽᨆߦᰳ߆ߖߥ޿‫ޕ‬㔚⸃ߦࠃࠆේሶଔ⺞ᢛߪ‫ޔ‬ൻቇ⹜⮎ߩᷝടࠍᔅⷐ
ߣߖߕ‫ޔ‬㔚૏⸳ቯߦࠃࠅ⥄࿷ߦ෻ᔕࠍ೙ᓮߢ߈ࠆ೑ὐࠍ߽ߟ‫ߩࡦࠝࠗ࠰ࠠࠝࠫޔߒ߆ߒޕ‬㊄ዻ㧙㉄⚛⚿วߩ㐿ⵚ޽ࠆ޿ߪᒻᚑࠍ઻߁ An4+/AnO2+㑆ߩ㉄ൻㆶరߪ㔚᳇ൻቇ⊛ߦ㕖นㅒᕈࠍ␜ߒ‫ޔ‬ᄢ߈ߥㆊ㔚࿶ࠍⷐߔࠆߥߤⶄ㔀ߢ‫ߥ⚦⹦ޔ‬㔚ᭂ෻ᔕ߽᣿ࠄ߆ߢߥ޿‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬ቯ㔚૏Ꮕ㔚⸃޽ࠆ޿ߪࡏ࡞࠲ࡦࡔ࠻࡝࡯ߦࠃࠅ NpO2+ ߩㆶర෻ᔕࠍ⺞ߴ‫ߩߘޔ‬෻ᔕᯏ᭴ࠍ᣿ࠄ
߆ߦߔࠆߣ౒ߦ‫⷗ޔ‬಴ߒߚ෻ᔕᯏ᭴ߦ┙⣉ߒߚ NpO2+߆ࠄ Np4+ߩㄦㅦߥㆶర⺞ᢛࠍ⹜ߺߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬Pt ߩ✂⁁૞↪㔚ᭂ‫ޔ‬Ag-AgCl ෳᾖ㔚ᭂ(SSE)‫ޔ‬Pt ✂ኻᭂ߆ࠄߥࠆ㔚⸃࠮࡞ࠍ↪޿‫ޔ‬ᠣᜈሶߦࠃࠅ⹜ᢱṁᶧࠍᠣᜈߒߥ߇ࠄ৻ቯ㔚૏ߢࡃ࡞ࠢ㔚⸃ߒߚ‫ޕ‬NpO2+ṁᶧߪ‫ޔ‬NpO22+ࠍ
+750 mV ߢ㔚⸃ㆶరߒߡ⺞⵾ߒߚ‫⊕ޕ‬㊄㤥㔚ᭂߪ‫ޔ‬Ⴎൻ⊕㊄㉄ṁᶧਛߢ 1.6 mA cm-2 ߩ㔚ᵹኒ
ᐲߢ 5 ᤨ㑆㔚⸃ㆶరߒߡ⊕㊄✂ߦ⊕㊄ࠍ㔚ᨆߐߖߡ૞⵾ߒߚ‫ޕ‬‫⚿ޣ‬ᨐ㨯⠨ኤ‫ ޤ‬ฝ࿑(a)ߪ‫⊕ޔ‬㊄✂㔚ᭂࠍ↪޿ߡ-40mV ߅ࠃ߮-70mV ߢ NpO2+ࠍቯ㔚૏Ꮕ㔚⸃ߒߚᤨߩ㔚⸃㔚ᵹ(i)ߩᤨ㑆(t)ᄌൻࠍ␜ߒߡ޿ࠆ‫ߥ⊛⥸৻ޕ‬ቯ㔚૏Ꮕ㔚⸃ߢߪ‫ޔ‬i ߪ㉄ൻㆶరᵴ
ᕈ⒳ߩỚᐲߦᲧ଀ߒ‫ޔ‬t ߦኻߒᜰᢙ㑐ᢙ⊛ߦᷫዋߔࠆ‫৻ޕ‬ᣇ‫ޔ‬NpO2+ߩㆶరߪࡇ࡯ࠢᒻ⁁ࠍᜬ
ߟ․ᓽ⊛ߥ i-t ᦛ✢ࠍ␜ߒߚ‫࡯࡝࠻ࡔࡦ࠲࡞ࡏޕ‬᷹ቯ⚿ᨐߣ(a)૬ߖߡ‫ߩߎޔ‬ㆶరࠍᰴߩੑߟߩᯏ᭴ߦࠃࠆ߽ߩߣ⚿⺰ߒߚ‫ޕ‬
4+

3

3+

Np 4  e  o Np 3

(1)

NpO 2  Np 3  4 H  o 2Np 4  2 H 2 O(2)i / mA(γ) Np /Np 㔚ሶ⒖േࡔ࠺ࠖࠛ࡯࠲ߦࠃࠆൻቇ෻ᔕ(δ) ⊕㊄਄߳ㆶరๆ⌕ߒߚ᳓⚛ߦࠃࠆ㔚ᭂ⸅ᇦ෻ᔕ
(3)

NpO 2  Pt - H  3H  o Np 4   2H 2 O  Pt -

(4)

00

+

߈ߥㆊ㔚࿶㧕ߢ㔚⸃ߔࠆᔅⷐ߇޽ࠆ[࿑(a)ෳᾖ]߇‫ޔ‬㓐઻ߔࠆ᳓⚛ࠟࠬ⊒↢߇⪺ߒߊᄢ߈ߊߥࠅ㔚ᵹല₸߇ૐਅߔࠆߣߣ
3+3+߽ߦ‫ޔ‬㔚⸃ᓟߩ Np ,Np ᷙวṁᶧਛߩ Np ഀว߇Ⴧടߔࠆ‫ޕ‬ߘߎߢ‫ޔ‬㔚ᭂ⸅ᇦ෻ᔕ(3),(4)ࠍലᨐ⊛ߦ㜞߼ࠆߚ߼⊕㊄✂ߦ⊕㊄ࠍ㔚ᨆߐߖߚ㔚ᭂ(⊕㊄㤥)ࠍ↪޿ߡ NpO2+ࠍ㔚⸃ㆶరߒߚߣߎࠈ‫ޔ‬࿑(b)ߦ␜ߔࠃ߁ߦ‫ࠅࠃޔ‬ዊߐߥㆊ㔚࿶ߢㄦㅦߥ Np4+߳ߩ㔚⸃ㆶరߦᚑഞߒߚ‫ޕ‬㔚⸃ᓟߩ Np4+ߩ⚐ᐲߪ
99%એ਄ߢ޽ߞߚ‫ޕ‬i-t ᦛ✢ߩ⸃ᨆ߆ࠄ‫ޔ‬㔚⸃ㆶరߪ߶߷৻
ᰴ෻ᔕߢ޽ࠅ‫ߩߘޔ‬ㅦᐲቯᢙߪ NpO22+߆ࠄ NpO2+߳ߩนㅒߥㆶరߩ႐วߣห⒟ᐲߢ޽ࠅ‫⾰‛ޔ‬ャㅍㅦᐲߦᓞㅦߐࠇߚ

4035(1)E =-40mV

20 40 60 80 100 120
t / min(b)

30
25

i / mA

NpO2 ࠍࠃࠅ⍴ᤨ㑆ߢ㔚⸃ㆶరߔࠆߦߪ‫⽶ࠅࠃޔ‬㔚૏㧔ᄢ

4+

2
1

Pt -  H   e  o Pt - H(2)E =-70mV

20
15
10

(3)E =0mV

5
0
0 2 4 6 8 10 12 14 16
t / min࿑ NpO2+ㆶరߩ i-t 㑐ଥᦛ✢
ṁᶧ: 3 mM NpO2+ + 1M HClO4
㔚ᭂ㧦 (a)⊕㊄, (b)⊕㊄㤥

E㧦(1)-40, (2)-70, (3) 0 mV vs SSEㄦㅦߥ㔚⸃ㆶరࠍ㆐ᚑߢ߈ߚ‫ޕ‬
Rapid reductive preparation of Np(IV) based on the electrocatalytic reaction
KITATSUJI, Y., KIMURA, T., KIHARA, S.

− 46 −

1B12⓸⚛࠼࠽࡯ൻว‛ 11-dialkyl-2-(1+-benzimidazol-2-yl)-pyridine-6-carboxamide ߩ㐿⊒ߣ f ర⚛ߣߩ㍲ᒻᚑ᜼േߩ⸃᣿
ේሶജᯏ᭴㨯᡼኿శ 1‫⨙ޔ‬ᄢ㒮㨯ℂᎿ 2 ٤㒙ਭᵤ๺ብ 1,2‫ޔ‬ዊᨋᔀ 1‫ޔ‬Ⴎ㘻⑲໪ ‫ޔ‬㋈ᧁિ৻ 1‫ޔ‬ᳰ↰◊ผ 1‫ޔ‬ጟᧄ⧐ᶈ 1‫ޔ‬⍫᧼Პ 1,2logȕ2logȕ 1‫ޤ⸒✜ޣ‬ਃଔ࡜ࡦ࠲ࡁࠗ࠼(Ln3+)߆ࠄਃଔࠕࠢ࠴ࡁࠗ࠼(An3+)ࠍ
R2ಽ㔌ߔࠆߎߣߪ‫ޔ‬㜞࡟ࡌ࡞᡼኿ᕈᑄ᫈‛ಣℂߦ߅ߌࠆ㊀ⷐߥࡊ
H
NNࡠ࠮ࠬߩ৻ߟߢ޽ࠆ‫ޕ‬Phenanthroline ߿ Benzimidazole-pyridine ߥ R1
NONߤߩ⓸⚛࠼࠽࡯ൻว‛ߪ‫ޔ‬ఝࠇߚ An3+ߩ⹺⼂㨯ಽ㔌⢻ࠍ᦭ߒߡ޿
ࠆߎߣ߇ㄭᐕ᣿ࠄ߆ߣߥࠅ‫ߩߘޔ‬ᔕ↪߇ᦼᓙߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ޘ‬
࿑1 BIZAߩ᭴ㅧߪ ‫ ޔ‬ᣂ ⷙ ⓸ ⚛ ࠼ ࠽ ࡯ ൻ ว ‛ 㧦 11-dialkyl-2-(1+-benzimidazolR1=Methyl, Butyl, Octyl
R2=Methyl, Butyl, Octyl, Phenyl, Tolyl2-yl)-pyridine-6-carboxamide㧔BIZA㧕ߦ⌕⋡ߒ‫ߩߘޔ‬㐿⊒ࠍⴕߞߚ‫ޔߦᦝޕ‬Ln3+ߣߩ㍲ᒻᚑ᜼േࠍಽశṢቯ෸߮ XAFS ࠍ↪޿ߡ⸃᣿ߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬BIZA ⺃ዉ૕ߪ‫ޔ‬2-(1+-benzimidazol-2-yl)-pyridine-6-carboxylic acid ߦછᗧࠕࡒࡦࠍ૞
↪ߐߖߡࠕࡒ࠼ൻߔࠆߎߣߢวᚑߒߚ‫ޔߦᦝޕ‬⒳‫ޔߢߣߎࠆ޿↪ࠍࡦࡒࠕߩޘ‬R1, R2 ߇⇣ߥࠆ
6 ⒳ߩ BIZA ⺃ዉ૕ࠍ♽⛔⊛ߦวᚑߒߚ‫ޔߚ߹ޕ‬ಽశṢቯ෸߮ XAFS ታ㛎ߢߪ‫ޔ‬6 ⒳ߩ BIZAߩ Eu3+ߣߩ㍲ᒻᚑ᜼േࠍᲧセߒ‫ޔ‬R1, R2 ߇㍲ᒻᚑߦ෸߷ߔᓇ㗀ࠍᬌ⸛ߒߚ‫ޔ߅ߥޕ‬XAFS ߩ᷹ቯߪ‫ޔ‬SPring-8 BL11XU ෸߮ KEK-PF BL27B ߦ߅޿ߡⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ಽశṢቯ෸߮ XAFS ߩ⚿ᨐ߆ࠄ‫ޔ‬Eu3+ߣ BIZA ߪ 1:1 ෸߮ 1:2 ߩ㍲૕ࠍᒻᚑߔ
ࠆߎߣ߇್᣿ߒߚ‫ޔߚ߹ޕ‬ಽశṢቯߦࠃࠅ Eu3+ߣ BIZA ⺃ዉ૕ߣߩ㍲↢ᚑቯᢙ㧔logȕ1, logȕ2㧕ࠍ▚಴ߒߚߣߎࠈ‫࡞ࠠ࡞ࠕޔ‬㎮߇㐳޿ BIZA㧔R1=Octyl㧕⺃ዉ૕ߪࠕ࡞ࠠ࡞㎮߇⍴޿ BIZA
㧔R1=Methyl㧕⺃ዉ૕ߣᲧߴߡ㍲↢7.5
11.5
ᚑቯᢙ߇৻ᩴㄭߊዊߐ޿ߎߣ߇᣿
ࠄ߆ߣߥߞߚ㧔࿑ 2㧕‫ޔߦᦝޕ‬R1=Butyl
711ߩ BIZA ⺃ዉ૕ߪ‫ޔ‬ਔ⠪ߩਛ㑆ߩ୯
3+ߢ޽ߞߚ‫৻ޕ‬ᣇ‫ޔ‬Eu -BIZA ㍲૕ߩ
XAFS ࠍ⸃ᨆߒߚ⚿ᨐ‫ޔ‬Eu3+ߦ㈩૏
6.5
10.5
ߒߚ O, N ේሶߣ Eu ߣߩ⚿ว〒㔌ߩᐔဋ୯ߪ‫ޔ‬R1=Octyl ߩ⺃ዉ૕ߩᣇ߇
6
10
R1=Methyl ߩ⺃ዉ૕ࠃࠅ߽㐳ߊߥࠆ⚿ᨐ߇ᓧࠄࠇߚ‫ߩࠄࠇߎޕ‬௑ะߪ‫ޔ‬
5.5
9.5
ࠕ࡞ࠠ࡞㎮ߩ┙૕㓚ኂߩᓇ㗀ߦࠃࠆ߽ߩߣផ᷹ߐࠇࠆ‫⚿ߩࠄࠇߎޕ‬ᨐ
59߆ࠄ‫࡞ࠠ࡞ࠕޔ‬㎮ߩ⒳㘃߿ዉ౉૏⟎ߥߤ‫ࠅࠃޔ‬ലᨐ⊛ߦ㍲ᒻᚑߔࠆൻว
4.5 R =Octyl R =Octyl R =Butyl R =Methyl R =Methyl R =Methyl 8.5‛㐿⊒ߩᣇะᕈ߇␜ໂߐࠇߚ‫ޕ‬
1
1
1
1
1
1
ᧄ⊒⴫ߢߪ‫ޔ‬BIZA ߩ An(III)෸߮
R2=Octyl R2=Tolyl R2=Butyl R2=Phenyl R2=Methyl R2=Tolyl
Ln(III)ߩ᛽಴․ᕈߦߟ޿ߡ߽⚫੺ߔ
࿑ 2 BIZA ⺃ዉ૕ߩ㍲↢ᚑቯᢙ logȕ1, logȕ2 ߩᲧセ‫ޕ‬ࠆ‫ޕ‬‫ع‬: logȕ , ً: logȕ ‫ޕ‬
1

2

11-Dialkyl-2-(1+-benzimidazol-2-yl)-pyridine-6-carboxamide
andElucidationof
TheirComplexation Toward f-element Ions.
AKUTSU, K., KOBAYASHI, T., SHIWAKU, H., SUZUKI, S., IKEDA-OHNO, A., OKAMOTO, Y.,YAITA, T.
− 47 −

1B13

QßÌ2@NFünUĀR&¢íÿ½Ð VqÉ [èÂ S_yć º¬ Rë '*%ünUĀĈZnOĉ'ö¬X2+ d|& n o\" / ±³&X%jZnO'QßÌ&~"Ą¼X1/*QßÌ&ÛąMþM`²W2/#%,.Ì2h/#uå#$/ ¡ '0)"&ÙÜ%!QßÌ#!4L:5HĈInĉ2ÁjÞ° ZnO &¢2111CdĈ111Inĉ2FKNE#/â¦lî×ă¾"íBJ7&X#×t/¢&Ą¼XÓ2ìe[1] &XÓ'¢¸÷n%õ|/#ä-0/)FKNE&p¯Zã2Í/%'æ!$ !±ÙÜ"'FKNE94?%ă/2/(In &@NFþ%/FKNEµZã"&Ąmû&n%ØÖ!Ć2éĆ
In(NO3)3M3H2O &6<ANJÅÀ% ZnO Þ°2j6<ANJa%çÔ/)"jË
§£!Þ°ïª2 In È' Zn %!q¨»"00 0.05%0.5%2%10%#$/,%ðê 0-&Þ°ïª# In 2@NF$ ZnO Þ°2g %āi !1,273 K " 3 ®ĂÊ  0-&Ê ïª% 111In &üÅÀ2ÆP1,373 K " 2®ĂÊ !¦lî×ăÄÒ&ïª# Ä%'³& 4 ¶ez¾2¥ÒÃ- 1000 K &ÃÝ}%!¦lî×ă;G7?J&Ã^2ð(á´-0.2
Fig. 1(a)% In 2 0.5%Fig.1(b)% 10%@NF-0.15!-0Ã"&¦lî×ă;G7?J2Ú s«b%FKNEµ#µ #&Ą¼{-0.1
ý·×T]Ò2t­/cÕ$¦lC<N-0.05
L" .a\& 86%D3=>3L8I4L"Ú0/¤l f" / In 2 0.5%@NF
0;G7?JĈFig.1(a)ĉ%'111In & EC 
%Yúk´2Úx/ damping íÄ
-0.2
0 O«In 2 10%@NFvĈFig.1-0.15(b)ĉ'Fig.1(a)#w¹& damping %j!
;G7?J&¤lC<NL®Ăàø#b%-0.1¿/ÏôÏ0!/ 0'FKNEµZã"&Ąmû%fÑ!/*"-0.05/#ä-0/ @NFþ%,!;G7
0?J&Ã^%+ùì-0 ±òÇ"'Ąmû#0-&f&v0.05
050 100 150 200 250 300%0-&Ã^% !óñ/

A22G22(t)

(a)

(b)

Time (ns)rä©Î[1] W. Sato et al., Phys. Rev. B. 78, 045319 (2008).
Local fields in impurity-doped ZnOSATO, W., OHKUBO, Y., YOKOYAMA, A., NAKANISHI, T.
− 48 −

Fig. 1. TDPAC spectra of 111Cd(111In) (a)in 0.5 at.% and (b) in 10 at.% In-doped ZnO
at room temperature.

1B14
1B14

ࠗࠝࡦᵈ౉㉄ൻࠬ࠭⭯⤑ߩᏗ⭯(Gࠗࠝࡦߩ⏛᳇⁁ᘒ㧔᧲ᄢ㒮Ꮏ1‫ޔ‬Dresden-Rossendorf ⎇2㧕 
٤㊁᧛⾆⟤1‫ࡦ࠲࡯࠱ࠬࡔࡀޔ‬1‫࠻࡯࡝ࡈ࡞ࡋ࡯࠲ࠗࡠޔ‬2

=?ߪߓ߼ߦ̆̆Ꮧ⭯⏛ᕈඨዉ૕ &/5 ߩቶ᷷ᒝ⏛ᕈߩ⊒⃻ߪߘߩၮ␆⊛ℂ⸃ߣࠬࡇࡦ࠻ࡠ࠾ࠢࠬ᧚
ᢱߣߒߡߩᔕ↪߆ࠄᵈ⋡ࠍᶎ߮ߡ޿ࠆ‫ߪߢߎߎޕ‬ㅘ᣿ߥ㉄ൻࠬ࠭ඨዉ૕⤑ߦ㋕ࠗࠝࡦࠍᵈ౉ߔࠆߎߣ
ߦࠃߞߡ૞⵾ߒߚ⤑ߩ⏛ᕈ⊒⃻ߣᵈ౉㋕ࠗࠝࡦߩ⁁㪇㪅㪇㪇㪊ᘒߦߟ޿ߡ⸃ᨆߒߚ‫ޕ‬ቶ᷷ߢࠗࠝࡦᵈ౉ߒߚ߽ߩߪᒝ
ࠗࠝࡦᵈ౉ߔࠆߣ-GTTലᨐ߇⹺߼ࠄࠇ‫(ߩࠄࠇߎޔ‬G
ォ឵㔚ሶࡔࠬࡃ࠙ࠕ࡯ %'/ ࠬࡍࠢ࠻࡞ߩ⸃ᨆ⚿ᨐࠍႎ๔ߔࠆ‫ޕ‬=?ታ㛎ᣇᴺ̆̆ZJ2C‫ޔ‬ၮ⋚᷷ᐲ͠ߩ㉄ൻࠬ


㪇㪅㪇㪇㪉
㪢㪼㫉㫉㩷㫉㫆㫋㪸㫋㫀㫆㫅㩷㪸㫅㪾㫃㪼㩷㪲㱔㪴⏛ᕈࠍ␜ߐߥ߆ߞߚ߇‫ޔ‬ၮ⋚᷷ᐲࠍ͠ߦߒߡ (GࠍPGGG
㪇㪅㪈㩼㪪㪹㩷㪻㫆㫇㪼㪻㩷㪪㫅㪦㪉㩷㪽㫀㫃㫄㪃㩷㱗㪔㪊㪇㪇㫅㫄

㪇㪅㪇㪇㪈
㪇㪅㪇㪇㪇
㪄㪇㪅㪇㪇㪈
㪄㪇㪅㪇㪇㪉࠭⭯⤑ 5D߹ߚߪ5D ߦZ (GEO ࠗࠝࡦᵈ౉㪄㪇㪅㪇㪇㪊
㪄㪈㪌ࠍ߅ߎߥߞߚ‫ޕ‬64+/ߩ⸘▚ߢߪMG8ߩടㅦࠛࡀ࡞

㪄㪈㪇

㪄㪌

㪇
㪟㪲㫂㪦㪼㪴

㪌㪈㪇㪈㪌ࠡ࡯ߢߪPOߩᷓߐߦߩᭂᄢ㋕Ớᐲࠍᜬߟ‫⥄ޕ‬૞ߩᓟᣇᢔੂဳࠟࠬᲧ଀⸘ᢙ▤ߦࠃࠆࠛࡀ࡞ࠡ࡯ᑯ೎(G㪈㪅㪈㪌%'/ࠬࡍࠢ࠻࡞ࠍ᷹ቯߒߚ‫ޕ‬


㪈㪅㪈㪇



=?⚿ᨐ̆̆ၮ⋚᷷ᐲ͠ߢ (GEO ࠗࠝࡦᵈലᨐࠍ␜ߒߚ‫ޕ‬ㅘ᣿ߥ㋕࠼࡯ࡊ㉄ൻࠬ࠭⤑߇ᓧࠄࠇߚ㪈㪅㪈㪇࠻ (G1ߩࠨࠗ࠻#$ ߩ⏛᳇ಽⵚࡇ࡯ࠢ߇᷹ⷰߐࠇߚ ࿑C‫⴫ޕ‬㕙ጀߢߪ(G1ߩࡇ࡯ࠢᒝᐲ߇㜞ߊ‫ޔ‬߹ߚ(G Ᏹ⏛ᕈࡇ࡯ࠢ߇(G Ᏹ⏛ᕈࡇ࡯ࠢࠃࠅ߽ᄢ߈

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㪫㫆㫇㩷㫃㪸㫐㪼㫉a) as implanted㪈㪅㪇㪌౉ߒߚ㉄ൻࠬ࠭⤑ 5D ߪ‫ޔ‬࿑D ߩࠃ߁ߦ-GTT߇‫ޔ‬ᛶ᛫ߪ㕖Ᏹߦ㜞ߊߥߞߚ‫ߩ⤑⊹ߩߎޕ‬%'/ࠬࡍࠢ㪇㪅㪈㩼㪪㪹㩷㪻㫆㫇㪼㪻㩷㪪㫅㪦㪉㪠㫅㫋㪼㫉㫄㪼㪻㫀㪸㫋㪼
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߆ߞߚ‫㉄ޔࠄ߆ࠇߎޕ‬ൻࠬ࠭⭯⤑ߩᒝ⏛ᕈ಴⃻ߪ‫(ޔ‬G1ᓸ☸ሶߩᨆ಴ߦࠃࠆ߽ߩߢ޽ࠆ‫ࠕ࡮࠻ࠬࡐߢ͠ޕ‬࠾࡯࡞ߒߡ߽ᒝ⏛ᕈߩᝄࠆ⥰޿ߪ‫ޔ‬ᶖᄬߒߥ߆ߞߚ‫ޕ‬
ߘߩ%'/ࠬࡍࠢ࠻࡞ߦߪ‫(ޔ‬G ߣ(G ߩᏱ⏛ᕈࡇ࡯ࠢߩ

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ઁ৻⚵ߩࡉࡠ࡯࠼ߥ⏛᳇ಽⵚࡇ࡯߇᷹ⷰߐࠇߚߎߣ
㪄㪈㪇߆ࠄ‫ߪࠇߎޔ‬หߓࠬࡇࡀ࡞᭴ㅧࠍ᦭ߔࠆᒝ⏛ᕈࡑࠣࡋࡑࠗ࠻ ǫ(G1 ߦࠃࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬5Dࠍ฽߻㉄
ൻࠬ࠭⊹⤑ߩ(Gࠗࠝࡦᵈ౉ߦߟ޿ߡ߽(G1߿ǫ(G1ߩࡇ࡯ࠢ߇᷹ⷰߐࠇ‫ߩࠄࠇߎޔ‬ᒝᐲߪዊߐ߆ߞߚ߇
5D㉄ൻࠬ࠭⊹⤑ߣห᭽ߥ⚿ᨐ߇ᓧࠄࠇߚ‫ޕ‬


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࿑ ͠ߦ߅޿ߡ (G ࠗࠝࡦᵈ౉ߒߚ㉄ൻࠬ࠭⊹⤑ 5D ߩ -GTT ലᨐ ࿁ォⷺߩ⏛႐ࡅࠬ࠹࡝ࠪࠬ ߅ࠃ߮ࠛࡀ࡞ࠡ࡯ᑯ೎ %'/ ࠬࡍࠢ࠻࡞Magnetism and Mossbauer study of SnO2 films implanted with 57Fe, 
NOMURA K., NEMETH Z., and REUTHER H.               − 49 −

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1B15

ᣂⷙዉ㔚ࠟ࡜ࠬߩࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞
ㄭ⇰ᄢ↥ℂᎿ㧝‫ޔ‬ㄭ⇰ᄢ㒮↥ᛛⴚ㧞  ٤⷏↰ື᣿ 㨮‫ޔ‬቟శኡ⸥㧞‫↰⏷ޔ‬ᖗม㧝‫㉄ ޤߦ߼ߓߪޣ‬ൻࡃ࠽ࠫ࠙ࡓࠍਥᚑಽߣߔࠆࡃ࠽ࠫࡦ㉄Ⴎࠟ࡜ࠬߪඨዉ૕ߣߒߡ⍮ࠄࠇߡ߅ࠅ‫ޔ‬㔚᳇ᛶ᛫ߩᄢ߈ߐߪࡔࠟࠝ࡯ࡓ㧔M:cm㧕ࠝ࡯࠳࡯ߢ޽ࠆ‫㉄ޔߪࠄ↰⷏ޕ‬ൻࠞ࡝࠙ࡓ㧙㉄ൻ㋕㧙㉄ൻࡃ࠽ࠫ࠙ࡓ♽ࠟ࡜ࠬࠍ૞ᚑߒ‫ࠬ࡜ࠟࠍࠇߎޔ‬ォ⒖᷷ᐲએ਄‫⚿ޔ‬᥏ൻ᷷ᐲએਅߩ
᷷ᐲ㗔ၞߢㆡᐲߦౣടᾲߔࠆߎߣߦࠃࠅ‫ޔ‬㔚᳇ᛶ᛫ࠍࠠࡠࠝ࡯ࡓࠝ࡯࠳࡯߹ߢᷫዋߐߖࠆߎ
ߣߦᚑഞߒߚ㧝㧕‫㉄ߩߎޕ‬ൻࠞ࡝࠙ࡓࠍᚑಽߣߔࠆࡃ࠽ࠫࡦ㉄Ⴎࠟ࡜ࠬߩ․ᓽߣߒߡ‫ࠬ࡜ࠟޔ‬㛽ᩰ߇৻ᰴర⊛ߢ޽ࠆߎߣ߇᜼ߍࠄࠇࠆ‫㉄ࡦࠫ࠽ࡃޕ‬Ⴎࠟ࡜ࠬߩዉ㔚ᯏ᭴ߪ‫ࠬ࡜ࠟޔ‬㛽ᩰࠍ᭴▽ߔࠆ㧟ଔ޽ࠆ޿ߪ㧠ଔߩࡃ࠽ࠫ࠙ࡓ߆ࠄ㧡ଔߩࡃ࠽ࠫ࠙ࡓ߳ߩ㔚ሶߩㅪ⛯⊛ߥࡎ࠶ࡇࡦ
ࠣߢ޽ࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ‫ࠬ࡜ࠟߪ↰⷏ߢߎߘޕ‬㛽ᩰߦ㧟ᰴరᕈࠍઃਈߔࠆ⋡⊛ߢ‫ޔ‬ᣂߚߦ㉄ൻࡃ࡝࠙ࡓ㧙㉄ൻ㋕㧙㉄ൻࡃ࠽ࠫ࠙ࡓ♽ࠟ࡜ࠬࠍ૞ᚑߒ‫ࠬ࡜ࠟࠍࠇߎޔ‬ォ⒖᷷ᐲએ਄ߢ
ౣടᾲߔࠆߎߣߦࠃࠅ‫ޔ‬㔚᳇ᛶ᛫ࠍࡔࠟࠝ࡯ࡓ߆ࠄᢙࠝ࡯ࡓߩ▸࿐ߢછᗧߦᄌൻߐߖࠆߎߣ
ߦᚑഞߒߡ޿ࠆ㧞㧟㧕‫ޕ‬ߎࠇࠄߩ⎇ⓥ㐿⊒ߦ߅޿ߡ‫ࠍࠬ࡜ࠟޟ‬ౣടᾲߔࠆߣ޿߆ߥࠆ᭴ㅧᄌൻ߇↢ߓࠆ߆‫⸃ࠍޠ‬᣿ߔࠆ਄ߢ‫ࠬ࡜ࠟޔ‬㛽ᩰࠍ᭴ᚑߔࠆ㋕㧔57Fe㧕ߩࡔࠬࡃ࠙ࠕ࡯ಽశᴺ߇ᭂ߼ߡ᦭ലߣߥࠆ‫ࠬࡔޕ‬ࡃ࠙ࠕ࡯ಽశᴺࠍ᦭ലᵴ↪ߔࠆߎߣߦࠃࠅ‫ޟ‬ⅣႺ⑼ቇ‫᧚ޟ߿ޠ‬ᢱ⑼ቇ‫ޠ‬ಽ㊁ߦ߅ߌࠆᩭ߿᡼
኿✢ߩ⁛⥄ᕈ‫ޔ‬ఝ૏ᕈࠍታ⸽ߢ߈ࠆߎߣ߇ᦼᓙߐࠇࠆ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬὇㉄ࡃ࡝࠙ࡓ‫㉄ޔ‬ൻ㋕(III)‫㉄ޔ‬ൻࡃ࠽ࠫ࠙ࡓ(V)ߩᔅⷐ㊂ࠍ♖⒊ߒ‫ߊࠃޔ‬ᷙวߒߚ߽
ߩࠍ⊕㊄ࠆߟ߷㧔޽ࠆ޿ߪࠕ࡞ࡒ࠽ࠪ࡝ࠞࠆߟ߷㧕ߦขࠅ‫ޔ‬㔚᳇Ἱਛ 1050 ͠ߢ 90 ಽടᾲṁⲢߒߚ‫ߩߘޕ‬ᓟ‫ߩߎޔ‬ṁⲢ‛ࠍ‫߼੍ޔ‬೎ߩ㔚᳇Ἱਛߢ 350㨪500 ͠ߩ⸳ቯ᷷ᐲߦടᾲߒߡ߅޿
ߚࠬ࠹ࡦ࡟ࠬ⵾ኈེߦᵹߒ಴ߒ‫ߩࠇߙࠇߘޔ‬᷷ᐲߢㆡᐲߦౣടᾲߒߚᓟ‫ࠍࠇߎޔ‬㔚᳇Ἱਛߢ᡼಄ߔࠆߎߣߦࠃࠅ㔚᳇ᛶ᛫ߩ⇣ߥࠆ⒳‫ߩޘ‬ᣂⷙዉ㔚ࠟ࡜ࠬ㧔⊓㍳໡ᮡ㧦NTA ࠟ࡜ࠬ TM㧕ࠍ૞ᚑߒߚ‫ߩࠄࠇߎޕ‬ዉ㔚ࠟ࡜ࠬࠍ‫ޔ‬ቶ᷷߆ࠄ 100 ͠ߩ▸࿐ߢ⋥ᵹ྾┵ሶᴺߦࠃࠅ㔚᳇ᛶ᛫ࠍ᳞߼ࠆߎߣߦࠃࠅ‫ޔ‬㔚᳇વዉߩᵴᕈൻࠛࡀ࡞ࠡ࡯㧔Ea㧕ࠍ▚಴ߒߚ‫࠻ࠢࡍࠬ࡯ࠕ࠙ࡃࠬࡔޕ‬࡞ߩ᷹ቯߪ 370 MBq ߩ 57Co(Rh) ✢Ḯࠍ↪޿ߡቶ᷷ߢቯടㅦᐲᴺߦࠃࠅⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ޤ‬ౣടᾲߒߚ NTA ࠟ࡜ࠬ TM ߩࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ࠍ᷹ቯߔࠆߣ‫ޔ‬Ǎߩ୯߇ᾲಣℂ
᷷ᐲߣᾲಣℂᤨ㑆ߦᔕߓߡ 0.68 mm s-1 ߆ࠄ 0.50 mm s-1 ߹ߢㅪ⛯⊛ߦᷫዋߒߚ‫ޕ‬ߎߩߎߣ߆ࠄ‫ޔ‬
ᾲಣℂߦࠃࠅ FeO4 ྾㕙૕ߩ‫ޔ߿ޠߺ߇ࠁޟ‬FeO4 ྾㕙૕ߣ㗂ὐ㉄⚛ࠍ౒᦭ߒߡࠟ࡜ࠬ㛽ᩰࠍ᭴▽ߒߡ޿ࠆ VO4 ྾㕙૕ߩ‫߇ޠߺ߇ࠁޟ‬ዊߐߊߥࠆ㧔ࠟ࡜ࠬ㛽ᩰ߇‫ޟ‬᭴ㅧ✭๺‫ࠆߔޠ‬㧕ߎߣ߇ಽ߆ࠆ‫ޕ‬ᾲಣℂ೨ߩ⹜ᢱߩ㔚᳇વዉߩ Ea ߪ 0.38 eV ߢ޽ߞߚ߇‫ޔ‬ᾲಣℂߣ౒ߦ Ea ߪዊߐߊߥࠅ‫ ߪߦ⊛⚳ᦨޔ‬0.13 eV ⒟ᐲ߹ߢᷫዋߒߚ‫ ޿઻ߦࠇߎߚ߹ޕ‬ı ߩ୯߇⋥✢⊛ߦჇടߒߚ‫ޕ‬ એ਄ߩ⚿ᨐࠍ✚᜝ߔࠆߣ‫ࠬ࡜ࠟޔ‬㛽ᩰߩ᭴ㅧ✭๺ߦࠃࠅવዉᏪ㧔CB㧕ߦሽ࿷ߔࠆࠠࡖ࡝ࡗ
࡯㧔㔚ሶ㧕ᢙ߇Ⴧ߃‫ޔ‬ı ߇਄᣹ߔࠆߣ⠨߃ࠄࠇࠆ‫࡯ࠕ࠙ࡃࠬࡔߦ߁ࠃߩߎޕ‬ಽశᴺࠍ↪޿ࠆߎߣߦࠃࠅ‫ޔ‬ේሶ޽ࠆ޿ߪ࠽ࡁ࡟ࡌ࡞ߢᣂ⚛᧚ߩ᧚ᢱ⸳⸘߿㐿⊒ࠍⴕ߁ߎߣ߇น⢻ߣߥࠆ‫ޕ‬੹ᓟ‫⾗ޔ‬Ḯ࡮ࠛࡀ࡞ࠡ࡯໧㗴߿ⅣႺ໧㗴ߩ⸃᳿ߦ᡼኿ൻቇ߇⽸₂ߢ߈ࠆߎߣࠍ㗿ߞߡ޿ࠆ‫ޕ‬
References[1] Nishida, T., Kubota, J., Maeda, Y., Ichikawa, F. and Aomine, T., J. Mater. Chem., 6 (1996) 1889-1896.
[2] Fukuda, K., Ikeda, A. and Nishida, T., Solid State Phenom., 90-91 (2003) 215-220.
[3] ⷏↰ື᣿‫╙⸵․ޔ‬㧟㧤㧡㧠㧥㧤㧡㧔㧞㧜㧜㧢㧕.
Mössbauer Spectra of New Electrically Conductive Vanadate GlassNISHIDA, T., YASUMITSU, H., ISODA, S.
− 50 −

1B16

ࠪࡘ࠙㉄෸߮ࡑࡠࡦ㉄㋕㧔Υ㧕㍲૕ߩࡔࠬࡃ࠙ࠕ࡯ಽశቇ⊛⎇ⓥ㚂ㇺᄢ㒮ℂᎿ ٤↰రᏆ‫⩵ޔ‬ᳰ⃍ᄩᄹ‫ޔ‬ਔⷺ િ‫⑺ޔ‬ጊ๺ᒾ‫㉄࠙ࡘࠪ ޤߦ߼ߓߪޣ‬ၮ߿ࡑࡠࡦ㉄ၮࠍ㈩૏ሶߣߔࠆ㋕㍲૕ߪ‫ޔ‬᡼኿✢ಽ⸃‫ޔ‬శൻቇ‫ޔ‬ಽሶ⏛ᕈ૕ߥߤᄙߊߩ⎇ⓥ߇ⴕࠊࠇߡ߈ߚ‫ޔߦ․ޕ‬᨞ᯅ㈩૏ሶߣߥࠅ߿ߔ޿ࠪࡘ࠙㉄ၮߩ႐วߦ
ߪ‫⥄ޔ‬Ꮖ㓸Ⓧൻߦࠃࠅᄙᰴర㍲૕ࠍᒻᚑߔࠆߎߣ߇ᦼᓙߐࠇ‫ޔ‬᭴ㅧൻቇ⊛ߦ߽⥝๧߇޽ࠆ‫ޕ‬ ৻ᣇ‫ޔ‬න⚐ߥ౎㕙૕ဳߩ࠻࡝ࠬࠪࡘ࠙㉄㋕㧔Υ㧕㍲૕߿࠻࡝ࠬࡑࡠࡦ㉄㋕㧔Υ㧕㍲૕ߪ‫ޔ‬ࠬࡇࡦ㧙ࠬࡇࡦ✭๺߿ࠬࡇࡦ㧙ᩰሶ✭๺߇᷹ⷰߐࠇ‫✢ߪߢ࡞࠻ࠢࡍࠬ࡯ࠕ࠙ࡃࠬࡔޔ‬᏷ߩᐢ޿ࠪࡦࠣ࡟࠶࠻ߣߒߡ᷹ⷰߐࠇࠆ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬ኻࠗࠝࡦߣߒߡ㐳㎮ߩࠕ࡞ࠠ࡞ࠕࡦࡕ࠾࠙
ࡓ㧔n-CnH2n+1NH3+㧕ࠍ↪޿ࠆߎߣߦࠃࠅ‫ޔ‬㋕㧙㋕㑆ߩ〒㔌ࠍ♽⛔⊛ߦᄌൻߐߖ‫ޔ‬㋕㧙㋕㑆ߩ〒㔌ߦଐሽߒߚ✭๺⃻⽎ߦߟ޿ߡࡔࠬࡃ࠙ࠕ࡯ಽశᴺߦࠃࠅᬌ⸛ߔࠆߣߣ߽ߦ‫㉄࠙ࡘࠪޔ‬ၮߢ᨞ᯅߒߚੑ㊂૕㋕㧔Υ㧕㍲૕ߦ߅޿ߡ᷹ⷰߐࠇߚ྾ᭂಽⵚߩ✭๺⃻⽎ߦߟ޿ߡ߽ᬌ⸛ߒߚ
ߩߢวࠊߖߡႎ๔ߔࠆ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬n-ࡕࡁࠕ࡞ࠠ࡞ࠕࡦࡕ࠾࠙ࡓࠍኻࠗࠝࡦߣߔࠆࠪࡘ࠙㉄෸߮ࡑࡠࡦ㉄㋕㧔Υ㧕㍲૕ߪ‫ߣࡦࠝࠗࡓ࠙࠾ࡕࡦࠕ࡞ࠠ࡞ࠕޔ‬ኻᔕߔࠆ࠻࡝ࠬࠫࠞ࡞ࡏࡦ㉄㋕㧔Υ㧕㉄ࠗࠝࡦࠍ↪޿ߡ᳓ṁᶧ޽ࠆ޿ߪ᳓㧙ࠕ࠮࠻ࡦ㧔ࠛ࠲ࡁ࡯࡞㧕ᷙวṁᶧਛߢวᚑߒ‫ޔ‬C‫ޔ‬H‫ޔ‬N ర⚛ಽᨆߦࠃࠅ
หቯߒߚ‫㉄࠙ࡘࠪޔߚ߹ޕ‬᨞ᯅ᭴ㅧࠍ฽߻㋕㧔Υ㧕ߩੑᩭ㍲૕(1) (Et4N)4[Fe2(ox)(NCS)8]‫(ޔ‬2)
Fe2(ox)(acac)4‫(ޔ‬3) Fe2(ox)(salapn)ߥߤߩวᚑߪᣢႎߩวᚑᴺࠍෳ⠨ߦⴕߞߚ㧔H2ox=ࠪࡘ࠙㉄‫ޔ‬Hacac=ࠕ࠮࠴࡞ࠕ࠮࠻ࡦ‫ޔ‬H2salapn=N,N’-(ࡆࠬࠨ࡝࠴࡞ࠕ࡞࠺ࡅ࠼)-㧔1,3-ࠫࠕࡒࡁࡍࡦ࠲ࡦ㧕‫ޕ‬ࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ߩ᷹ቯߪ‫ޔ‬ᶧ૕ࡋ࡝࠙ࡓ᷷ᐲ߆ࠄቶ᷷߹ߢߩ᷷ᐲ㗔ၞߢ᷹ቯߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ ᶧ૕⓸⚛᷷ᐲߦ߅ߌࠆࡕࡁࠕ࡞ࠠ࡞ࠕࡦࡕ࠾࠙ࡓ㍲૕ߩࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ߪ޿ߕࠇ
߽✢᏷ߩᐢ޿ࠪࡦࠣ࡟࠶࠻ߣߒߡ᷹ⷰߐࠇߚ‫㉄࠙ࡘࠪޕ‬㋕(Υ)㍲૕ߩ႐วߦߪ‫࡞ࠠ࡞ࠕޔ‬ၮߩ὇⚛ᢙ㨚߇ 12 ߆ࠄ 18 ߳ߣჇടߔࠆߦߟࠇߡ✢᏷ߪ‫ޔ‬2.78 㨪3.7 mmӦs-1 ߣ⋥✢⊛ߦჇടߒ㋕㧙㋕㑆ߩ〒㔌ߩᐢ߇ࠅߦኻᔕߒߡ✭๺ᤨ㑆߇㐳ߊߥࠆߎߣ߇␜ໂߐࠇߚ߇‫㉄ࡦࡠࡑޔ‬㋕㧔Υ㧕ߩ႐วߦߪ‫ޔ‬᣿⏕ߥଐሽᕈߪ᷹ⷰߐࠇߥ߆ߞߚ‫ߩࠇߕ޿ޔߦࠄߐޕ‬႐วߦ߽✢᏷߇ᷫዋߔࠆ
ߣ੍᷹ߐࠇߚ n=10 ߦ߅޿ߡ‫ޔ‬ㅒߦ✢᏷߇Ⴧടߒߚ‫㉄ࡦࡠࡑߦ․ޕ‬㋕㧔Υ㧕ߩ႐วߦߪ‫ޔ‬4.8 mm-1-1
Ӧs ߣ n=12㧔2.7 mms 㧕ߣᲧセߒߡ୚ㄭߊ‫ޔ‬㋕㧙㋕㑆〒㔌ߩᄌൻߢߪ⺑᣿ߢ߈ߥ޿‫ޔߢߎߘޕ‬n=10 ߦߟ޿ߡ‫ޔ‬ቶ᷷߆ࠄᶧ૕⓸⚛᷷ᐲ߹ߢ᷹ቯߒߚ⚿ᨐ‫ޔ‬170 K ㄭறߢᕆỗߥჇട߇᷹ⷰߐ
ࠇ‫✢ޔ‬᏷ߩᐢ߇ࠅߪࠬࡇࡦ㧙ࠬࡇࡦ✭๺ߦࠃࠅࠬࡇࡦ㧙ᩰሶ✭๺ߩᣇ߇ᡰ㈩⊛ߢ޽ࠆ‫ޕ‬ੑᩭ㋕㧔Υ㧕㍲૕ߩ♽ߢߪ‫⴫ޔ‬㧝ߦ␜ߔࠃ߁ߦ྾ᭂಽⵚߩ㕖ኻ⒓ᕈߩ⒟ᐲ߇㈩૏ሶߦଐሽ
ߒߡ޿ࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬㈩૏ᐳ߇ᄙ޿ salapn ߩᣇ߇᭴ㅧ⊛ߦᱡࠎߢ߅ࠅ‫ޔ‬ゲኻ⒓ᕈ߇ૐߊߥࠅ‫✭ޔ‬๺ᤨ㑆߽⍴ߊߥߞߚ⚿ᨐ‫ߩ࡞࠻ࠢࡍࠬޔ‬ኻ⽎ᕈ߇ࠃߊߥߞߚ߽ߩߣផቯߐࠇࠆ‫ޕ‬⴫㧝 ࡔࠬࡃ࠙ࠕ࡯ࡄ࡜ࡔ࡯࠲㧔ᶧ૕⓸⚛᷷ᐲ㧕㋕㍲૕⇣ᕈ૕ࠪࡈ࠻
-1

྾ᭂಽⵚ
-1

✢᏷

IS/mmӦs

QS/mmӦs

HW/mmӦs-1(1)(Et4N)4[Fe2(ox)(NCS)8]

0.53

0.20

1.57 0.68

(2) Fe2(ox)(acac)4

0.56

0.72

0.87 0.63

(3) Fe2(ox)(salapn)

0.51

0.94

0.63 0.50

M·ssbauer spectroscopic studies of oxalate and malonate iron(III) complexes
KATADA, M., KIKUCHI, R., MOROZUMI, S., AKIYAMA, K.
− 51 −

1B17

V\GKLBF_K^`F[_Åw8Û$

8 ;_T`YZGS<9`xs*6 " É+b

$ ØähéI  ½ØØ ČčØ  ĈØ¢  ¹ÙÚ¢ µä ĉr ÀóÞ  eoÿ Ü¦Ë a  løÍ ĕÌ 
løâg Ę¡¶ª

,0* Ă¤+cÂT`Y+áû.Ċß*3%&ÂÕØ+/)4!ÕĀ
é2-+¸«Û1$47$²,8 ) *1;+:23=/ mćî) * 2 "3 md) **ē=Q]A`*}ă$­cÂ 8ĖT    738ė8
Äā/"+Â'6 / +=@JM:LB)Ö¯8ZGS<9`xsÊ*3%&äì&$ZG9S<9`~Á+Åw*, / 8Ññ$GM_^Gõm8vö$£ù£¾ď ÅwĖ ė8nÛ$ ) *nÛ$  *, ð+uĔp(ÈÂ8 4µ76 ð+p(+xüô)Ò*uĔp("+ ð*36R;H(+ÉĖ" Éė+®°¬7&$»äì',÷V\GKLBF_K^`F[_Åw8Û& ð+p8ĆzĎ
6(*35" É+b8á³$Ē Ē,µä  +gÇT`YD`G*&ù%$Â$5 /% *}ă$ / ;>_8 77 + / Æà*ÓtÂæåĄê*3%&ē=Q]A`+
8 8Ù±$Ù±7$  8 ,gÇT`YD`G*3%&i+æåÔ4Ćz7ąy)=Q]A`Îú¨Đç­Ĉ 6 ¾Ė 77A 77A 77 ė*Äā.7$ 8+¨ / 4µ76 5/% + ð+ZGS<9`uĔ8ZGS<9`P\;S`*þò$  *35Ð$  (E_V]+ċ* 77 +V\GK
LBF_K^`F[_Åw8þò 5/% ð( ð(+9_KD;_FN_G8(5ðÝ¼+p8Ď $ïÁ 9_KD;_FN_GÊ*3%&Ð7$Ï+ 6 d'+ / +ßsZGS<
9`GXBO]8 31 *è Ðºċ,  ºċ  + ðpĎ ¨+ý·×,í
-:<-2 '%$31 *è763*"  77<Ėđë§¥  ė( "  
77<Ėđë§¥  ė+ »+F_C^LO'ü¿'"7#7ò´Ãkò(Ãċkò'%$
W`G\;_+ý·  ?<_O'6+*ò´kò*« 6U`B+ý·,  ?<_O(*íęq1+ý·'%$ ð8Ď )j{+Ð',+ý·É  qĖÐºċĚ ºċė'%$(4 ðĎ *35ãºċ'Ā+ēGXBO]8©6f*±|$
31  8,/+7 /73<<398 D<<,+>/;
) *'9,+B+<23/=+6!+.>-62/7    <:/-=;>7 90 / 37:6+8=/. 38 8987+18/=3-) *'9,+B+<23/=+6B:8=    
7/=+6 6 +< + 0>8-=398 90 ?/69-3=B @3=2 =2/
;+B;/4/-=398) *''9<23.+/=+6 2B<3-+       
) *#"+3=9/=+6!+.>-62/7   7:;9?/7/8= 90 <318+6 =9 893</ ;+=39 38 838,/+7 D<<,+>/; <:/-=;9<-9:B ,B >=363C381 + :6+<=3-<-38=366+=398-9>8=/;
##'"'$''!"# &'("#"#&

− 52 −

1B18

ĕ{9YTJ;Unc, 57Mn :[M]U\VCK;9]ws

ĨICUåò Íåå Ğğå À}ò Çæç« Ęå« Ěr §Ïÿê eqđ ©é¯Ú _ mĄîg |ª
Áµ ¢ĪÜ mĄÝ 

-/+ ĕ{9YTJ;Uī6 Ĭ-YM]1AO8:9,d¹w)'0ï35'42+ûÊc+ 4búã+2%'Õ+ëă 4#/búã,÷Ħ1ė)ëă),ĝp-ĂÛòø£Ē)*%'4* +ëă6-/) 4ûÊc(,búã,½±x-u+-åČ5'*"Õ*ã·+ĝ'6c,b(Ìòø(-ºěë6¼#:[M]UVCK;9]wsØ6¶è6
úãęA:H,´Ċì*¸6³4)6íì)' Ĩ6ą%# ĨĨ-À¥ý}üòø»,ĖùyĔÆď+'ą%# 0 ,^ÖM]Uī 0&>Ĭ6QXX;UD]@GH+â¥t¥Ñôó¶(æ¹5# 8īT  ĐÄī 77
77 OY;F{ĈĬ+:<[Ùt 7Ĭ6Ĥõñ(wģ'6
#:[M]UØ(à 4àÉ,KG>?W;[I # ×6lÞ!4)*%'#,(h-ja,g&,á6«' # ×6`!#ĭĬM]U6L
YC{'à 4)+2%'M]Uâ¥+24À¥{(æ¹54ð¤Ñ,°ĥ6
ĐÄc, 8 3Àv54 ý6 ÉčÂØ+2%'Ġ#* +ĐÄ
¾ĮĬ6c, 8 ,+2%'Àv54  50& ,VCK;9]=[Sý-­ą­ÎĤ*$
5Óv* +6è'¡ß(à#ûÐ¡ßà(³35#VCK;9]CR>HY6 42 +ö `Ď,«+2%'# ×ħēì+`#CR>HY+-ćzý(ö#2+B[?ZGHī#  77<Ĭ)EPZGHī#  77<!# 77<Ĭ,Į¹w'4B[?Z
GH-ĩCN[, 0 (5- 6 ,þ¿kþ6~Ë'4¹w(4)Ā354^ÅEPZGH,¹w+&'-ÔwĆċà5'ÒĜġ+t%# 0 ,
4#/6¹w(4ā·6ö'4h²->W:<CDGH6¦t'C
R>HY,ß®o·3¹w,¬¨
6ąf(4ĀÃä
* +   ,;.4,,<=;, et al Phys. Rev B79




* +Ěr iÌĉÈĢ  * +§Ïÿê.7! 

42  8-0,7 C<<-,>0; <:0.=;>7 91 0 8
47:6,8=0/ 48 :96B.;B<=,66480 6   $30 70,<>;0708=@,< :0;19;70/ ,= ;997 =07:0;,=>;0  $30 ?069.4=B 98
=30,-<.4<<,4<;06,=4?0=9,8 0<=,8/,;/48074<<498
79/0 @34.3 =,50< 48?0;<0 <428< =9 .98?08=498,6
=;,8<74<<49879/0

8-0,7C<<-,>0;<:0.=;9<.9:B91847:6,8=0/48=9,6>748>79A4/0
$  $ (#(%  (("#$ #$'()#$ '
− 53 −

1B19

㓟໬࣐ࢢࢿࢩ࣒࢘ᅛయ୰ࡢ 57Mn ࢖ࣥࣅ࣮࣒࣭࣓ࢫࣂ࢘࢔࣮ศගᐇ㦂(ᅜᇶ╩኱ 1ࠊ⌮◊ோ⛉ࢭ 2ࠊᮾ⌮኱⌮ 3ࠊ㜰኱㝔⌮ 4ࠊ㔠኱⌮ᕤ 5ࠊ᪥኱⏕⏘ᕤ 6ࠊ
ᨺ་◊ 7) 㛗཭ഔ 1ࠊᑠᯘ⩏⏨ 2ࠊஂಖㅬဢ 1ࠊ‫ۑ‬ᒣ⏣ᗣὒ 3ࠊ୕ཎᇶႹ 4ࠊబ⸨΅ 5ࠊᐑᓮ῟ 6ࠊబ⸨┾஧ 7㸪໭ᕝᩔᚿ 7࠙ࡣࡌࡵ࡟ࠚ57Mn ࣅ࣮࣒ࢆ⏝࠸ࡓ 57Fe ࢖ࣥࣅ࣮࣒࣭࣓ࢫࣂ࢘࢔࣮ศගἲࡣࣉ࣮ࣟࣈཎᏊ᰾ࡢ࢚
࢟ࢰࢳࢵࢡ࡞໬Ꮫ≧ែࡸ࿘ᅖࡢ≀㉁ࡢ㟁Ꮚᵓ㐀ࢆ▱ࡿ᭷ຠ࡞ᡭẁ࡛࠶ࡿࠋᡃࠎࡣࡇࢀࡲ࡛࡟
KMnO4 ࡸ O2 ᅛయ࡟ 57Mn ࢆὀධࡋࡓ⤖ᯝ࡟ࡘ࠸࡚ሗ࿌ࡋ࡚ࡁࡓࠋᨺᑕ⥺་Ꮫ⥲ྜ◊✲ᡤࡢ㔜࢖࢜
ࣥຍ㏿ჾ HIMAC ࢆ⏝࠸ࡓᐃᡭἲࡢ㛤Ⓨ࡟ࡼࡾࠊࢫ࣌ࢡࢺࣝࡢ S/N ࡀ᱁ẁ࡟ྥୖࡋࡓࡓࡵࠊᵝࠎ࡞≀㉁࡛ࡢ ᐃࡀྍ⬟࡜࡞ࡗࡓࠋࡇࡇ࡛ࡣࠊ༢⣧࡞ᒾሷᆺᵓ㐀ࢆᣢࡘ MgO ᅛయ࡬ 57Mn ࢆὀධࡋࡓ⤖ᯝ࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋMgO:Fe ࡢ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝ࡟ࡘ࠸࡚ࡣᵝࠎ࡞ሗ࿌ࡀ࠶ࡾࠊ࣐ࣥ
ࢺࣝ࡟ྵࡲࢀࡿࣇ࢙ࣟ࣌ࣜࢡ࣮ࣞࢫ(Mg,Fe)O ࡢ௚࡟ࡶࠊ㓟໬㕲࡜㓟໬࣐ࢢࢿࢩ࣒࢘ࡢΰྜ≀ࡸࠊ
57

Fe ࢆࢻ࣮ࣉࡋࡓ MgO ࡞࡝ࡀሗ࿌ࡉࢀ࡚࠸ࡿࡀࠊ
ࡇࢀࡽࡣ࠸ࡎࢀࡶከ㔞ࡢ Fe ࢆྵࡴࡶࡢ࡛࠶ࡿࠋ

57

Mn ࢆὀධࡍࡿ ᐃἲࡣ㠀ᖖ࡟ឤᗘࡀࡼ࠸ࡓࡵࠊᴟᚤ㔞ࡢࣉ࣮ࣟࣈཎᏊ࡛ࡶ

ᐃࡀྍ⬟࡛࠶ࡿࡓ

ࡵࠊヨᩱ୰࡛ࡢࣉ࣮ࣟࣈཎᏊࡢจ㞟ࡀ࡞࠸ MgO ヨᩱ୰ࡢ⎔ቃࢆ཯ᫎࡋࡓࢫ࣌ࢡࢺࣝࡀᚓࡽࢀࡿࠋ
57
࠙ᐇ㦂ࠚ
Mn ࡣࠊ
ᨺᑕ⥺་Ꮫ⥲ྜ◊✲ᡤ HIMAC ࡛ 58Fe ࣅ࣮࣒ࡢ᰾◚○཯ᛂ࡟ࡼࡗ࡚ࡘࡃࡾࠊ

㑅ูࡋࡓࠋヨᩱ࡟ࡣከ⤖ᬗ MgO ෇┙㸦50 mmȭ  5 mm; ࣇࣝ࢘ࢳ໬Ꮫ〇㸧ࢆ⏝࠸ࡓࠋ57Mn
ࡢቯኚ࡟క࠸ 57Fe ࠿ࡽᨺฟࡉࢀࡿ 14.4 keVȚ⥺ࢆᖹ⾜ᖹᯈ㟁Ꮚ࡞ࡔࢀᆺ᳨ฟჾ PPAC ࢆ⏝࠸࡚ᐃࡋࡓࠋ ᐃἲࡢヲ⣽࡟ࡘ࠸࡚ࡣᮏⓎ⾲࡟ඛ❧ࡗ࡚Ⓨ⾲ࡍࡿ㸦1B17, 1B18㸧㏻ࡾ࡛࠶ࡿࠋ

࠙⤖ᯝ࡜⪃ᐹࠚ57Mn ࢆὀධࡋࡓ MgO ヨᩱࡢᐊ ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡣ Fig. 1 ࡟♧ࡍࡼ࠺࡟ࠊࢩࣥࢢࣞࢵࢺ(G = -0.91 mm/s)࡜ࢲࣈࣞࢵࢺ(G = -0.55 mm/s, 'Eq = 1.3 mm/s)ࡢ⤌ࡳྜࢃࡏ࡜
ࡋ࡚ゎ㔘ࡍࡿࡇ࡜ࡀ࡛ࡁࡿࠋࡓࡔࡋࠊ᳨ฟჾࢆຍ㏿ࡋ࡞ࡀࡽᐃࡍࡿⓎග࣓ࢫࣂ࢘࢔࣮ࢫ࣌

ࢡࢺ࡛ࣝ࠶ࡿࡓࡵࠊ㏿ᗘ㍈ࡣ㏻ᖖ
ࡢ㏱㐣ἲ࡟ࡼࡿ

ᐃ࡜ࡣ➢ྕࡀ

㏫㌿ࡋ࡚࠸ࡿࠋ୺ᡂศ࡛࠶ࡿࢩࣥ
ࢢࣞࢵࢺࡣ㧗ࢫࣆࣥ 2 ౯㕲࡛࠶
ࡾࠊ6 ಶࡢ㓟⣲ཎᏊ࡟ྲྀࡾᅖࡲࢀ
ࡓ Mg2+⨨᥮఩⨨ࡢ㕲࡛࠶ࡿ࡜ᖐ
ᒓࡉࢀࡿࠋࢲࣈࣞࢵࢺᡂศࡢᖐᒓ
࡟ࡣᵝࠎ࡞ࡶࡢࡀྍ⬟࡛࠶ࡿࡀࠊ
O Ḟ㝗࡟㞄᥋ࡍࡿ Fe ཎᏊࡸ᱁Ꮚ
㛫㝽୰ࡢ Fe ཎᏊ࡞࡝ࡢྍ⬟ᛶࡀ⪃࠼ࡽࢀࡿࠋᐦᗘỗ㛵ᩘἲ࡟ࡼࡿ
ࢡࣛࢫࢱ࣮ࣔࢹࣝィ⟬ࡢ⤖ᯝ࡜ẚ
㍑ࡍࡿࡇ࡜࡛ᖐᒓࢆ⾜࠺ࠋFig. 1. Room temperature in-beam Mössbauer spectrum of 57Fe
ĸ57Mn) implanted in polycrystalline MgO.

In-beam Mössbauer spectroscopy of 57Mn implanted into magnesium oxide
NAGATOMO, T., KOBAYASHI, Y., KUBO, M. K., YAMADA, Y., MIHARA, M., SATO, W., MIYAZAKI,J., SATO, S., KITAGAWA, A.
− 54 −

研究発表要旨
9 月 28 日（月）1P01 〜 1P40：ポスター発表

P 会場 ࠍ↪޿ߚධᭂ࠼࡯ࡓ߰ߓ᳖ᐥࠦࠕਛߩ  ߩಽᨆ )᧲ർᄢ㒮ℂ  ᧲ർᄢ㜞ᢎ࠮  ᒄ೨ᄢ㒮ℂᎿ  ᧲੩ᄢ㒮Ꮏ  ቇ⠌㒮ᄢℂ 
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౉㊂ߪᄥ㓁㘑߿࿾⃿⏛႐ᒝᐲߦࠃߞߡᄌേߔࠆߚ߼‫↢ߩ  ޔ‬ᚑ㊂߽ᄌേߔࠆ‫ޔ߫߃଀ޕ‬ᄥ㓁ᵴേ߇ᵴ⊒ߦߥࠆߣᄥ㓁㘑ߩᒝᐲ߇Ⴧߒ‫ޔ‬࿾⃿ߦ೔㆐ߔࠆቝቮ✢ߪᷫዋߒߡ  ߩ↢ᚑ㊂߽ᷫዋߔࠆ‫ߦ߁ࠃߩߎޕ‬ᄥ㓁ᵴേߣ  ߩ↢ᚑ㊂ߦߪ‫ޔ‬ኒធߥ㑐ଥ߇޽ࠆ‫ޕ‬ᧄ⎇ⓥߢߪ⹜ᢱߣߒߡධᭂ࠼࡯ࡓ߰ߓ᳖ᐥࠦࠕࠍ↪޿‫ޔ‬ടㅦེ⾰㊂ಽᨆᴺ㧔㧕ߢ 
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ઍࡕ࠺࡞ࠍ⵬ᱜߔࠆߎߣ߽น⢻ߣ⠨߃ࠆ‫ޕ‬



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         : <     =           !"#$%&"!%'"%$!%(#!#("− 56 −

1P02ᣣᧄ೉ፉߦ߅ߌࠆ㔺಴὇㉄Ⴎጤߩ㐳ᦼ⊛ଚ㘩ㅦᐲ:ࠞ࡞ࠨࠗ࠻ਛߩቝቮ✢↢ᚑᩭ⒳ 36Cl ࠍ↪޿ߚផቯ(᧲ᄢ࡮Ꮏ 1‫╳ޔ‬ᵄᄢ࡮ᔕ↪ടㅦེ 2‫╳ޔ‬ᵄᄢ࡮RIC3‫╳ޔ‬ᵄᄢ࡮↢๮ⅣႺ⑼ቇ 4)٤᧻྾㓶㛉 1‫౏ ╣ޔ‬๺ 2‫ᧁᧃޔ‬໪੺ 3‫ޔ‬㜞ᯅ ദ 2‫ޔ‬㐳ፉᵏᄦ 2‫౏ୖ᧻ޔ‬ᙗ 4‫ ޤߦ߼ߓߪޣ‬὇㉄Ⴎጤߪ࿾⴫㕙Ⓧߩ⚂ 20%ࠍභ߼ߡ߅ࠅ㧘ߘߩൻቇ㘑ൻ㧔ṁ⸃㧕ㅦᐲߪ⃯㉄ႮጤߩߘࠇߦᲧߴߡ 2±4 ࠝ࡯࠳࡯ᄢ߈޿㧚ߎߩߚ߼㧘὇㉄Ⴎጤߩൻቇ㘑ൻߪ㧘᳇࿤߅ࠃ߮ጤ
࿤ߩ὇⚛ࠍ᳓࿤߳ߣャㅍߔࠆ਄ߢ㊀ⷐߥᓎഀࠍᨐߚߒߡ޿ࠆߣ⠨߃ࠄࠇࠆ㧚ᓥ᧪㧘ጤ⍹ߩൻቇ㘑ൻߦࠃࠆ὇⚛ߩᓴⅣࡈ࡜࠶ࠢࠬߩផቯߦߪ㧘ᄢᴡᎹߩ᳓⾰࠺࡯࠲ߥߤߦၮߠ޿ߚࡑࠬࡃ
࡜ࡦࠬߦࠃࠆࠕࡊࡠ࡯࠴߇ߥߐࠇߡ߈ߚ㧚ߒ߆ߒߎߩᚻᴺߢߪ㧘὇㉄Ⴎጤߣ⃯㉄Ⴎጤߘࠇߙ
ࠇߩ㘑ൻㅦᐲ߿㧘ᴡᎹߩṁሽᚑಽߦኻߔࠆነਈ₸ߥߤ߇චಽߦᬌ⸛ߐࠇߡ߅ࠄߕ㧘᳇୥ᄌേ߿࠹ࠢ࠻࠾࠶ࠢߥᄌേߣ޿ߞߚⅣႺᄌൻߦኻߒ㧘ጤ⍹ߩൻቇ㘑ൻࠪࠬ࠹ࡓ߇ߤߩࠃ߁ߥᔕ╵ࠍߔࠆߩ߆ߦߟ޿ߡߩ⍮⷗ࠍᓧࠆߎߣߪ㔍ߒ޿㧚߹ߚ㧘὇㉄ႮጤߩಽᏓၞߢߪ㧘᳇୥ⅣႺߦ
ᔕߓߚᄙ᭽ߥࠞ࡞ࠬ࠻߇ߺࠄࠇࠆ߇㧘ߘߩࠃ߁ߥ࿾ᒻ⊛․ᓽ߇㧘ߤߩࠃ߁ߥㅦᐲߢ㧘ߤߩࠃ߁ߥᤨ㑆ࠬࠤ࡯࡞ߢᒻᚑߐࠇࠆߩ߆ߦߟ޿ߡ㧘ฎߊ߆ࠄ࿾ᒻቇ⊛ߥ⥝๧߇ᜬߚࠇߡ޿ࠆ㧚ᧄ⎇ⓥߢߪ㧘ࠞ࡞ࠨࠗ࠻ਛߩቝቮ✢↢ᚑᩭ⒳ 36Cl ࠍ↪޿ߡ㧘੝ᾲᏪ߆ࠄ੝ኙᏪߩⅣႺਅߦ߅ߌ
ࠆ⍹Ἧጤߩ㐳ᦼᐔဋ⊛ߥ೥೸ㅦᐲࠍቯ㊂ߒ㧘ߘߩ᳇୥ଐሽᕈࠍቯᑼൻߔࠆ㧚‫ޣ‬ᣇᴺ‫ޤ‬੝ᾲᏪ᳇୥ߦዻߔࠆᴒ✽࿾ᣇ߆ࠄ㧘੝ኙᏪ᳇୥ߦዻߔࠆർᶏ㆏ർㇱ߹ߢ㧘ᣣᧄ೉ፉฦ࿾ߩઃട૕὇㉄Ⴎጤ࿾ၞ㧔9 ࿾ၞ㧕ࠍኻ⽎ߦ⹜ᢱណขࠍⴕߞߚ㧚ฦ࿾ၞߦ߅޿ߡਐ㗂ㇱߩᢙ࿾ὐࠍㆬᛯߒ㧘࿾⴫㕙ߦ㔺಴ߒߚࡇ࠽ࠢ࡞వ㗂ㇱ߆ࠄᢙ⊖ࠣ࡜ࡓߩጤ⍹⹜ᢱࠍណขߒߚ㧚ጤ⍹⹜ᢱߪࡒ࡞ߢ☳⎈ߒ㧘0.5±0.125 mm ߦ◎ㆊ࡮ᢛ☸ߒߡᵞᵺߒߚߩߜ㧘⎣㉄ߦࠃࠆࠛ࠶࠴
ࡦࠣߢ☸ሶ⴫㕙ߩ 10%ࠍṁ⸃ߔࠆߎߣߢ㧘ᄢ᳇⿠Ḯߩ 36Cl ߅ࠃ߮ߘߩઁߩᳪᨴࠍขࠅ㒰޿ߚ㧚ੇ῎ߐߖߚ⹜ᢱࠍ~20 g ⒊㊂ߒ㧘ห૏૕Ꮧ㉼ߩߚ߼ 99atom% ߩ 35Cl ࠠࡖ࡝ࠕࠍ 1 mg ᷝടߒߚ㧚⹜ᢱߪ⎣㉄ࠍ↪޿ߡṁ⸃ߒߚߩߜ㧘AgCl ᴉᲚࠍขࠅ಴ߒߡടㅦེ⾰㊂ಽᨆ↪ߩᮡ⊛ߣߒ
ߚ㧚Cl ห૏૕Ყߩቯ㊂ߪ㧘╳ᵄᄢቇ⎇ⓥၮ⋚✚ว࠮ࡦ࠲࡯ᔕ↪ടㅦེㇱ㐷ߩടㅦེ⾰㊂ಽᨆࠪࠬ࠹ࡓࠍ↪޿ߡⴕߞߚ㧚߹ߚ㧘ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴ߩ JRR-3M ේሶἹࠍ↪޿ߚහ⊒ࠟࡦࡑ✢ಽᨆߦࠃߞߡ㧘ጤ⍹⹜ᢱਛߩਥⷐర⚛߅ࠃ߮ਛᕈሶๆ෼ᩭߩỚᐲࠍ᳞߼㧘36Cl ߩ↢ᚑ₸ࠍ᳿ቯߒߚ㧚ᓧࠄࠇߚ࠺࡯࠲ࠍ↪޿ߡㅒ⸃ᨆࡕࡦ࠹ࠞ࡞ࡠࠪࡒࡘ࡟࡯࡚ࠪࡦࠍⴕ޿㧘὇㉄Ⴎጤߩ೥೸ㅦᐲࠍ᳿ቯߒߚ㧚‫⚿ޣ‬ᨐ߅ࠃ߮⠨ኤ‫ޤ‬᷹ቯߐࠇߚ 36Cl Ớᐲߪ 105±106 atom gí1 ߩࠝ࡯࠳࡯ߢ޽ࠅ㧘ᩭ⒳ߩ↢ᚑ₸
㧔20±40 atom gí1 yrí1㧕߆ࠄߺߡ㧘104±105 ᐕࠬࠤ࡯࡞ߢߩ㐳ᦼᐔဋ⊛ߥ࿾⴫㕙ߩ೥೸ࠍ෻ᤋߒ
ߡ޿ࠆ߽ߩߣផቯߐࠇߚ㧚⸘▚ߐࠇߚ࿾⴫㕙ߩ೥೸ㅦᐲߪ㧘~15±60 mm kyrí1 ߢ޽ࠅ㧘᷷Ꮺߦ඙ಽߐࠇࠆᣣᧄ೉ፉߩਛᄩㇱߦ߅޿ߡૐ޿୯ࠍ␜ߒ㧘಄Ꮺߦዻߔࠆർᶏ㆏߿᧲ർർㇱ㧘߅ࠃ߮੝ᾲᏪߩᴒ✽ߢ⋧ኻ⊛ߦ㜞޿୯ࠍ␜ߒߚ㧚ฦ࿾ၞߦ߅ߌࠆ⃻࿷ߩ᳇୥᧦ઙࠍ↪޿ߡߎߩ௑
ะߩࡕ࠺࡝ࡦࠣࠍⴕߞߚߣߎࠈ㧘᳇᷷㧘㒠᳓㊂㧘ಓ⚿Ⲣ⸃੤ઍᣣᢙߦଐሽߒߡ㧘ࠞ࡞ࠬ࠻࿾
ᒻߩ೥೸ㆊ⒟ߦ߅ߌࠆൻቇ⊛૞↪㧔ṁ⸃㧕ߣ‛ℂ⊛૞↪㧔ಓ⚿⎕⎈㧕ߩ⋧ኻ⊛ነਈ߇ᄌൻߒ
ߡ޿ࠆߎߣ߇␜ໂߐࠇߚ㧚․ߦ⷏ධᣣᧄߦ߅ߌࠆṁ⸃૞↪ߦߟ޿ߡߪ㧘ࠕ࡟࠾࠙ࠬߩᑼࠍࡌ
࡯ࠬߦߒߚᐔဋ᳇᷷ߣᐕ㑆㒠᳓㊂ߩ㑐ᢙߣߒߡ⴫⃻น⢻ߢ޽ࠆߎߣ߇ࠊ߆ߞߚ㧚Long-term denudation rates of karst surfaces in Japan: estimates from cosmogenic 36Cl in calcite
MATSUSHI, Y., SASA, K., SUEKI, K., TAKAHASHI, T., NAGASHIMA, Y., MATSUKURA, Y.
− 57 −

1P03

࿯ფ᦭ᯏ‛ਛߩ 36Cl ߦኻߔࠆ᷹ቯߩ⹜ߺ
╳ᵄᄢ㒮࡮ᢙℂ‛⾰ ‫╳ޔ‬ᵄᄢ࡮AMS‫᧲ޔ‬ᄢ࡮MALT‫ޔ‬㜞ࠛࡀ⎇ 㧕٤ᄤ㊁ቁᵗ ‫ᧁᧃޔ‬໪੺ ‫₹ޔ‬ℂ⟤ᥓሶ ‫ޔ‬ർᎹẢ৻ ‫౏╣ޔ‬๺ ‫ޔ‬㐳ፉᵏᄦ ‫ޔ‬㜞ደᐽᒾ ‫ޔ‬㜞ᯅദ ‫ޔ‬ᄢᧁବⴕ ‫ᧁޔ‬ਅື৻ ‫ޔ‬ᚭፒ⵨⾆ ‫᧻ޔ‬྾㓶㛉 ‫ޔ‬೎ᚲశᄥ㇢ ᷓᐲ㩿㪺㫄㪀

‫ޣ‬ᐨ⺰‫ޤ‬Ⴎ⚛ߩ᡼኿ᕈห૏૕ߢ޽ࠆ 36Cl (ඨᷫᦼ: ⚂ 30 ਁᐕ) ߪ‫ޔ‬ᄢ᳇ਛߢߪਥߦቝቮ✢ߦࠃࠆ 40Arߩᩭ⎕⎈෻ᔕߢ↢ᚑߐࠇߡ޿ࠆ‫ޔߒ߆ߒޕ‬1952 ᐕ߆ࠄ 1958 ᐕߦ߆ߌߡߪ‫ޔ‬᳓਄ᩭታ㛎ߩᓇ㗀ࠍฃߌߡᄢ㊂ߦ↢ᚑߐࠇ‫ߦ⊛ᤨ৻ޔ‬ᄢ᳇ਛߦ᡼಴ߐࠇߚ‫ޕ‬36Cl ߪᄢ᳇ਛߩ቟ቯႮ⚛ߣห᭽ߦ‫ޔ‬㔎߿㔐ߣߣ߽ߦ࿾਄߳㒠ਅߔࠆߚ߼‫ޔ‬ᩭታ㛎ᦼ෸߮ߘߩᓟᢙᐕߩ 36Cl 㒠ਅ㊂ߪᄢ᏷ߦჇ
ടߒߡ޿ࠆ‫ࠍߣߎߩߎޕ‬೑↪ߒߚ⎇ⓥߩ଀ߣߒߡ‫ޔ‬࿾ਅ᳓ߩṛ⇐ᤨ㑆ߩផቯ╬߇޽ࠆ‫ޕ‬࿯ფਛߦ߅ߌࠆ 36Cl ߪ‫ޔ‬Ⴎൻ‛߿᦭ᯏႮ⚛ൻว‛ߥߤ߇⿠Ḯߣߒߡ⠨߃ࠄࠇ‫ޔ‬Ⴎ⚛ᓴⅣߩ
࠻࡟࡯ࠨ࡯ߣߥࠆน⢻ᕈ߿‫ޔ‬࿯ფߦ߅ߌࠆ᡼኿⢻ᳪᨴߩᜰᮡߣߥࠆน⢻ᕈࠍᜬߞߡ޿ࠆ‫ޕ‬ᒰ⎇ⓥቶߢߪ‫ޔ‬࿯ფ⹜ᢱߦኻߒߡ⚐᳓߿Ꮧ⎣㉄ߢ᛽಴ߒߚႮൻ‛ਛߩ 36Cl ࠍਥߥኻ⽎ߦߒߡ߈ߚ߇‫੹ޔ‬࿁ߪ᦭ᯏ‛ਛߩ 36Cl ߦᵈ⋡ߒ‫ޔ‬࿯ფࠍΆ὾ߔࠆᣇᴺߦߟ޿ߡᬌ⸛ߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬╳ᵄᄢቇࠕࠗ࠰࠻࡯ࡊ✚ว࠮ࡦ࠲࡯๟ㄝߩ⴫ጀ࿯ფ (RIC) ࠍ↪޿ߡ‫⹜ޔ‬ᢱಣℂᣇᴺߩᬌ⸛
ࠍⴕߞߚ‫ޕ‬0.01 mol / l ߩ HNO3 ᳓ṁᶧߢ࿯ფਛߩႮൻ‛ࠍ᛽಴ߒ‫ޔ‬᛽಴ߒߚṁᶧߦᵴᕈ὇ 2 gࠍട߃ߡ 3 ᤨ㑆ᝄߣ߁ߒߚ‫ޕ‬1 ᣣ᡼⟎ᓟ‫ޔ‬ṁᶧߣᵴᕈ὇ࠍಽ㔌ߒ‫ࠍࠇߎޔ‬᛽಴ࠨࡦࡊ࡞ߣߒ
ߚ‫ޕ‬᛽಴ߦ૶↪ߒߚ࿯ფߣᵴᕈ὇ߪ‫⚛㉄ޔ‬᳇ᵹਛ⚂ 1000 ˚C ߢ 2㨪3 ᤨ㑆Ά὾ߒ‫ߚߒ↢⊒ޔ‬᳇૕ࠍ‫ޔ‬Na2SO3 ࠍ⚂ 1 g ട߃ߚ 1.25 mol / l NaOH ᳓ṁᶧߢ࠻࡜࠶ࡊߒߚ‫ޕ‬Ά὾⚳ੌᓟ‫࡜࠻ޔ‬࠶ࡊṁᶧߦ 30 % H2O2 ᳓ṁᶧࠍട߃‫ޔ‬Ά὾ࠨࡦࡊ࡞ߣߒߚ‫ߦ࡞ࡊࡦࠨߩࠇߙࠇߘޕ‬Ớ HNO3᳓ṁᶧࠍട߃ߡ㉄ᕈߦߒ‫ޔ‬
ߐࠄߦ 0.03 mol / l AgNO3 ᳓ṁᶧࠍട߃ߡ AgCl ᴉᲚࠍ↢ᚑߐߖߚ‫ޕ‬ߘߩᴉᲚࠍ♖⵾ߒ‫ߚߖߐ῎ੇޔ‬ᓟ‫ޔ‬AMS ߦࠃߞߡห૏૕Ყ 36Cl/Cl ߩ᷹ቯࠍⴕߞߚ‫ޕ‬߹ߚ‫ޔ‬㕍᫪⋵౐ࡩᚲ᧛ߢណขߒߚᷓߐ 1 m ߹ߢߩࠦࠕࠨࡦࡊ࡞࿯ფࠍ↪޿ߡ‫ޔ‬36Cl/Cl ߣᷓᐲߩ㑐ଥࠍ⺞ߴߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ޤ‬
RIC ࿯ფߦ߅޿ߡ‫ޔ‬Ά὾ࠨࡦࡊ࡞ߩ 36Cl/Cl = (9.8r1.0)
10г14 ߪ᛽಴ࠨࡦࡊ࡞ߩ 36Cl/Cl = (6.0r0.5)10г14 ࠃ㪊㪍㪚㫃㪆㪚㫃㩿㬍㪈㪇 㪄㪈㪋 㪀ࠅ߽㜞޿୯ࠍ␜ߒ‫ޔ‬࿯ფో㊂ࠍΆ὾ߐߖߚࠨࡦࡊ࡞ߪ
㪇
㪈㪇
㪉㪇
㪊㪇
36
Cl/Cl = (8.5r0.7)10г14 ߣ‫ޔ‬Ά὾ࠨࡦࡊ࡞ߣ᛽಴ࠨࡦ
㪇ࡊ࡞ߩ㑆ߩ୯ࠍ␜ߒߚ‫ޔࠄ߆ߣߎߩߎޕ‬࿯ფਛߩႮ⚛
᛽಴䉰䊮䊒䊦
㪉㪇ߩ⿠Ḯߩ㆑޿ߦࠃߞߡ‫ޔ‬36Cl/Cl ୯߽⇣ߥࠆน⢻ᕈ߇޽Ά὾䉰䊮䊒䊦
ࠆߎߣ߇ࠊ߆ߞߚ‫ޕ‬㪋㪇ࠦࠕࠨࡦࡊ࡞࿯ფߣ 36Cl/Cl ߣᷓᐲߩ㑐ଥࠍ࿑ 1 ߦ␜ߔ‫ޕ‬᛽಴ࠨࡦࡊ࡞ߩ 36Cl/Cl ୯ߪ‫⴫ޔ‬ጀ߆ࠄ⚂ 30 cm ᷓ㪍㪇ߦ߆ߌߡᓢ‫ߦޘ‬ዊߐߊߥߞߡ޿߈‫ࠇߘޔ‬એ㒠ߪ߶߷৻㪏㪇ቯߣߥߞߡ޿ࠆ‫৻ޕ‬ᣇΆ὾ࠨࡦࡊ࡞ߩ 36Cl/Cl ୯ߪ‫ޔ‬ᷓߊߥࠆߦᓥߞߡჇടߔࠆߣ޿߁௑ะ߇᷹ⷰߐࠇߚ‫ޕ‬㪈㪇㪇 ᛽಴ࠨࡦࡊ࡞ߣΆ὾ࠨࡦࡊ࡞ߩ㑆ߦ⋧㑐ᕈ߇⷗ࠄ࿑ 1 ࠦࠕࠨࡦࡊ࡞࿯ფߩ
ࠇߥ߆ߞߚ‫੹ޕ‬ᓟ‫ޔ‬Ά὾ࠨࡦࡊ࡞ߦ฽߹ࠇߡ޿ࠆႮ⚛
36
Cl/Cl ߣᷓᐲߩ㑐ଥߩ⿠Ḯߦߟ޿ߡ‫߇⺰⼏ࠆߥࠄߐޔ‬ᔅⷐߢ޽ࠆ‫ޕ‬
Measurement of 36Cl in organic substance of soil
AMANO, T., SUEKI, K., TAMARI, M., KITAGAWA, J., SASA, K., NAGASHIMA, Y., TAKAYA, Y.,
OKI, T., TAKAHASHI, T., KINOSHITA, N., TOSAKI, Y., MATSUSHI, Y., BESSHO, K.
− 58 −

1P04

JAEA-AMS-TONO ߦࠃࠆ 14C ᷹ቯᴺߩᡷ⦟
ේሶജᯏ᭴ ‫ޔ‬㧔ᩣ㧕ࡍࠬࠦ 2 ٤࿡ಽ 㥲⮮ 㓁ሶ ‫⷏ޔ‬Ỉ┨శ ‫ޔ‬ᄢ⣁ᅢᄦ ‫ޔ‬⷏የᥓඳ ‫ޔ‬㋈ᧁరቁ ‫ޔ‬⍹ਣᕡሽ ‫ޤߦ߼ߓߪޣ‬ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴ ᧲Ớ࿾⑼ቇ࠮ࡦ࠲࡯ߢߪ࠲ࡦ࠺ࡓဳടㅦེ⾰㊂ಽᨆⵝ⟎ࠍ↪޿ߡᯏ᭴ౝㇱ෸߮ᄖㇱᯏ㑐߆ࠄฃߌ౉ࠇߚ⹜ᢱਛߩ 14C ᐕઍ᷹ቯࠍⴕߞߡ޿ࠆ‫࡯࠺ߩࠄࠇߎޕ‬࠲ߪ‫ޔ‬᡼኿ᕈᑄ᫈‛ߩ࿾ጀಣಽߦ߅ߌࠆ࿾⾰ⅣႺߩ቟ቯᕈߩ⹏ଔߩ߶߆‫ޔ‬ᐕઍ᳿ቯࠍᔅⷐߣߔࠆ࿾⃿⑼ቇಽ㊁ߥߤߩ⎇ⓥߦነਈߒߡ޿ࠆ‫⃻ޕ‬࿷‫࠻ࠗࠔࡈ࡜ࠣޔ‬㊂ߣߒߡ 1 mg ߩ⹜ᢱ߇ᔅ
ⷐߢ޽ࠆ߇‫ޔ‬ㄭᐕߐࠄߦዋ㊂ߩ⹜ᢱࠍኻ⽎ߣߒߚ᷹ቯⷐ᳞߇Ⴧ߃ߡ޿ࠆ‫⎇ᧄޔ߼ߚߩߘޕ‬ⓥߢߪ‫ޔ‬ᭂᓸ㊂ߩ⹜ᢱߢߩ᷹ቯߦኻᔕߢ߈ࠆࠃ߁‫ߩ⟎ⵝޔ‬ᡷ⦟෸߮⹜ᢱ⺞⵾ᣇᴺߩᬌ⸛ࠍⴕߞ
ߚߩߢႎ๔ߔࠆ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬
1. ⵝ⟎ߩᡷ⦟
ᓸ㊂⹜ᢱߢߪᓧࠄࠇࠆࠗࠝࡦࡆ࡯ࡓ㊂߇ዋߥ޿ߚ߼‫♖ޔ‬ᐲߩࠃ޿࠺࡯࠲ࠍᓧࠆߚ߼ߦߪ቟
ቯߒߚࡆ࡯ࡓ߇ᔅⷐߢ޽ࠆ‫↢⊒ߩࡓ࡯ࡆࡦࠝࠗޕ‬㊂ߩ቟ቯᕈߦᓇ㗀ࠍਈ߃ߡ޿ࠆࠗࠝࡦḮ࠮ࠪ࠙ࡓࠝ࡯ࡉࡦߩ᷷ᐲߦᵈ⋡ߒ‫ߩߘޔ‬᷷ᐲ೙ᓮࠪࠬ࠹ࡓߩᡷ⦟ࠍⴕߞߚ‫ޕ‬ᡷ⦟ߢߪᣢሽߩ᷷
ᐲ೙ᓮࠪࠬ࠹ࡓߦ᷷ᐲ⺞ᢛེ෸߮ᾲ㔚ኻ‫ߩࠄࠇߎޕߚߒ⌕ⵝࠍ╬࡯࡟࡝ޔ‬ᡷༀലᨐࠍ⺞ߴࠆߚ߼‫ޔ‬ᮡḰ⹜ᢱߩࠪࡘ࠙㉄㧔NIST HOxII㧕ࠍ᷹ቯߒߚ‫ޕ‬
2. ⹜ᢱ⺞⵾ᣇᴺߩᬌ⸛
⹜ᢱ߇ዋߥ޿႐ว‫ߚ߹ޔ‬ᣢߦࠣ࡜ࡈࠔࠗ࠻ߦ⺞⵾ߐࠇߚ⹜ᢱ߇ዋߥ޿႐วߩ 2 ㅢࠅߩ⹜ᢱ
⺞⵾ᣇᴺ╬ߦߟ޿ߡᬌ⸛ߒߚ‫⹜ޕ‬ᢱߪᮡḰ⹜ᢱߩ NIST HoxII‫ޔ‬⍹Ἧ⪇㧔IAEA C2㧕‫ޔ‬ᄢℂ⍹
㧔IAEA C1㧕ࠍ↪޿ߚ‫⹜ޕ‬ᢱ߇ዋߥ޿႐วߦߟ޿ߡߪ‫⹜ޔ‬ᢱ㊂ࠍᚲቯ㊂ߩ 100%‫ޔ‬75%‫ޔ‬50%‫ޔ‬
25%ߣᲑ㓏⊛ߦᷫዋߐߖߡᬌ⸛ߒߚ‫ޔߚ߹ޕ‬ᣢߦࠣ࡜ࡈࠔࠗ࠻ߦ⺞⵾ߐࠇߚ⹜ᢱ߇ዋߥ޿႐
วߦߟ޿ߡߪ‫ޔ‬න૕ߢߪࠞ࠰࡯࠼ߦട࿶ᢛᒻߢ߈ߥ޿⹜ᢱ㊂ 0.25 mg ߣ㋕☳ 1 mg ࠍਅ⸥ߩ 2⒳㘃ߩᣇᴺߢട߃ߡ᷹ቯ⹜ᢱࠍ૞⵾ߒ‫ޔ‬ㅢᏱߣห᭽ 12 ࿁ߩ➅ࠅ㄰ߒ᷹ቯࠍⴕ޿ᬌ⸛ߒߚ‫ޕ‬
ᣇᴺ 1㧦ࠣ࡜ࡈࠔࠗ࠻෸߮㋕☳ࠍᷙߗߚᓟ‫߼⹣ߦ࠼࡯࠰ࠞޔ‬ട࿶ᚑᒻߔࠆ‫ޕ‬
ᣇᴺ 2㧦ࠞ࠰࡯࠼ߦࠣ࡜ࡈࠔࠗ࠻ࠍ౉ࠇߚᓟ‫ޔ‬㋕☳ࠍട߃ട࿶ᚑᒻߔࠆ‫ޕ‬‫⚿ޣ‬ᨐ෸߮⠨ኤ‫ޤ‬
1. ⵝ⟎ߩᡷ⦟
ࠗࠝࡦḮ࠮ࠪ࠙ࡓࠝ࡯ࡉࡦߩ᷷ᐲ೙ᓮࠪࠬ࠹ࡓߩᡷ⦟ߦࠃࠅ‫ޔ‬ᡷ⦟೨ߪ 1 ࿁ߩ᷹ቯ㧔⚂ 40ᤨ㑆㧕ߢࠝ࡯ࡉࡦ᷷ᐲ߇⚂ 5͠ߋࠄ޿ᄌേߒߡ޿ߚ߇‫ޔ‬ᡷ⦟ᓟߪ 1͠એౝߦ೙ᓮߢ߈ࠆࠃ߁ߦ
ߥߞߚ‫ ߚ߹ޕ‬NIST HOxII ߩૐࠛࡀ࡞ࠡ࡯஥ 12C ߩ᷹ቯਛߩᄌേߪ‫ ⚂ޔ‬10%ߛߞߚ߽ߩ߇ 5%એਅߣߥࠅ‫ߩࡓ࡯ࡆޔ‬቟ቯᕈߪᡷༀߐࠇߚ‫ޕ‬
2. ⹜ᢱ⺞⵾ᣇᴺߩᬌ⸛
⹜ᢱ㊂߇ዋߥߊߥࠆߣ↢ᚑߔࠆࠣ࡜ࡈࠔࠗ࠻㊂߽ዋߥߊߥࠆߣ⠨߃ࠄࠇࠆ߇‫ޔ‬㋕☳ߦ෻ᔕߐߖ૞⵾ߒߚࠣ࡜ࡈࠔࠗ࠻⹜ᢱࠍⷰኤߒߚߣߎࠈ‫ߦ․ޔ‬ᄖ⷗਄ߩ㆑޿ߪ⷗ࠄࠇߥ߆ߞߚ‫߹ޕ‬ߚࠞ࠰࡯࠼ߦᚑᒻߢ߈ߥ޿㊂ߩࠣ࡜ࡈࠔࠗ࠻ߦ㋕☳ࠍട߃ࠆ⹜ᢱ⺞ᢛᣇᴺߢߪ‫ޔ‬ᣇᴺ 1‫ޔ‬2ߣ߽᷹ቯน⢻ߥ⹜ᢱࠍ૞⵾ߔࠆߎߣ߇ߢ߈ߚ‫ޕ‬ᣇᴺ 1 ߩ 14C ࠞ࠙ࡦ࠻ᢙߪ‫ࠅ➅ޔ‬㄰ߒ᷹ቯਛᲧセ⊛৻ቯߢ޽ߞߚ‫৻ޕ‬ᣇ‫ޔ‬ᣇᴺ 2 ߩࠞ࠙ࡦ࠻ᢙߪᣇᴺ 1 ߦᲧߴ‫ޔ‬᷹ቯߒᆎ߼ߪ㜞޿߽ߩߩᓢ‫ߦޘ‬ᷫዋߔࠆ௑ะࠍ␜ߒߚ‫ޔߪߢ⴫⊒ޕ‬ฦᣇᴺߩ 14C/12C Ყߩ⚿ᨐߦߟ޿ߡ߽ႎ๔ߔࠆ‫ޕ‬
Improvement of 14C measurement by JAEA-AMS-TONO
Saito-Kokubu, Y., Nishizawa, A., Ohwaki, Y., Nishio, T., Suzuki, M., Ishimaru, T.
− 59 −

1P05

ᚤᙅᨺᑕ⥺

ᐃ⏝ࢱࣥࢢࢫࢸࣥ㐽࡬࠸㔠ἑ኱ LLRL  ‫ۑ‬὾ᓥ㟹඾࠙ࡣࡌࡵ࡟ࠚ ᚤᙅᨺᑕ⥺ ᐃࡢᣦᶆ࡜ࡋ࡚ FOM (Figure Of Merit)ࡀ⏝࠸ࡽࢀࡿࠋS ࢆࢩࢢࢼࣝᙉᗘ㸪B ࢆࣂࢵࢡࢢࣛࣥࢻ(BKG)ᙉᗘ࡜ࡍࡿ࡜㸪FOM = S2/B ࡛⾲ࡉࢀࡿࠋFOM ࢆ኱ࡁࡃࡍ
ࡿ࡟ࡣ㸪᳨ฟຠ⋡ࢆୖࡆ㸦ヨᩱࡢῶᐜ➼ࡶྵࡴ㸧㸪㛗᫬㛫 ᐃࢆ⾜ࡗ࡚㸪S ࢆ኱ࡁࡃࡍࡿࡇ࡜
ࡣࡶࡕࢁࢇ࡛࠶ࡿࡀ㸪B ࢆᑠࡉࡃࡍࡿࡇ࡜ࡶ㔜せ࡜࡞ࡿࠋB ࢆᑠࡉࡃࡍࡿ᪉ἲࡢ 1 ࡘࡣ㸪ຠᯝⓗ࡞㐽࡬࠸ࢆ⾜࠺ࡇ࡜࡛࠶ࡾ㸪ᐦᗘࡀ኱ࡁࡃᨺᑕᛶ୙⣧≀ࡀᑡ࡞࠸㐽࡬࠸ᮦࢆ⏝࠸ࡿࠋࡼࡃ⏝࠸ࡽࢀࡿᮦᩱࡣ Pb (ᐦᗘ d=11.3 g cm-3)࡛࠶ࡿࡀ㸪㏻ᖖࡢ Pb ࡟ࡣ༙ῶᮇ 22.3 ᖺࡢ 210Pb ࡀྵࡲࢀࡿࠋ210Pb ࡣ 46.5 keV ࡢ࣐࢞ࣥ⥺(ᨺฟ⋡ 4.3%)ࢆᨺฟࡍࡿࠋ࣐࢞ࣥ⥺ ᐃࡢ㝿࡟ၥ㢟࡜࡞ࡿࡢࡣ㸪46.5 keV ࡢ௚࡟ፉ᰾✀ࡢ 210Bi ࠿ࡽᨺฟࡉࢀࡿ 1.16 MeV ࡢ࣮࣋ࢱ⥺࡟㉳ᅉࡍࡿไືᨺᑕ⥺ࡀ࠶ࡿࠋࡲࡓ㸪Pb ࡢ X ⥺ࡀጉᐖࡍࡿሙྜࡶ࠶ࡿࠋࡇࢀ࡟ᑐฎࡍࡿࡓࡵ㸪Pb ࡢෆഃ࡟ Cu (ྠ 8.9)ࡸ Hg (ྠ 13.5)ࢆ⏝࠸ࡓࡾ㸪Fe (ྠ 7.9)ࢆ㐽࡬࠸ᮦ࡜ࡍࡿሙྜࡶ࠶ࡿࠋᑿᑠᒇᆅୗ
ᐇ㦂ᐊ(OUL)ࡢ Ge ᳨ฟჾ࡟ࡣ㸪㏻ᖖ㖄࡟ࡼࡿ㐽࡬࠸ࡢෆഃ࡟㸪〇㐀ᚋ 200 ᖺ௨ୖ⤒㐣ࡋࡓ࡜ᛮࢃࢀࡿ⣙ 4cm ཌࡢ Pb (㏻⛠㔠ἑᇛ Pb)ࢆ⏝࠸࡚ B ࢆᑠࡉࡃࡋ࡚࠸ࡿࠋ㔠ἑᇛ Pb ࡣࡶࡣࡸධ
ᡭ୙ྍ⬟࡛࠶ࡓࡵ㸪ᮏ◊✲࡛ࡣ㸪㔠ἑᇛ Pb ࡟௦ࢃࡿ㐽࡬࠸ᮦ࡜ࡋ࡚㸪᭱㏆ࡋࡤࡋࡤ┠࡟ࡍࡿᐦᗘࡢ኱ࡁ࠸ W (ྠ 19.3)㐽࡬࠸య࡟ὀ┠ࡋ㸪ᚤᙅᨺᑕ⥺ ᐃ࡟฼⏝ྍ⬟࠿᳨ウࡋࡓࠋ࠙ᐇ㦂ࠚ W ⢊ࢆ↝⤖ࡋ㸪෇ᰕ(እᚄ㧗ࡉཌࡉ:130 mm200 mm10 mm)࡜㸪෇┙(እᚄཌࡉ:130 mm10 mm) ࢆヨస౫㢗ࡋࡓࠋ ↝⤖ W ࡢẚ㔜ࡣ 17.9 ࡛࠶ࡗࡓࠋࢸࢫࢺ࡟౑⏝ࡋࡓ
OUL ࡢ஭ᡞᆺ Ge (Ge ⤖ᬗࡢ┤ᚄ㧗ࡉ:68 mm70 mm㸪⤖ᬗࡢ஭ᡞᚄ῝ࡉ:22 mm54 mm)࡟ࡣ㔠ἑᇛ
Pb ࡛సᡂࡋࡓ࡯ࡰྠࡌෆᚄ࡛㧗ࡉཌࡉࡣ⣙ 150 mm⣙ 40 mm ࡢ෇ᰕཬࡧ࡯ࡰྠᙧࡢ෇┙ࢆ⏝࠸࡚࠸ࡿࠋࡇࢀ࡜ W 㐽࡬࠸ࢆ஺᥮ࡋ
BKG ࢆ ᐃࡋࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ↝⤖ W 㐽࡬࠸ࡢ BKG ࢫ࣌ࢡࢺࣝࢆᅗ 1 ࡟♧ࡍࠋẚ㔜ࢆ⪃៖ࡋࡓཌࡳ
࡛ࡣ㔠ἑᇛ Pb 㐽࡬࠸ࡢ⣙ 2/5 ࡋ࠿࡞ࡃ㸪ᙧ≧ࡶ␗࡞ࡗ࡚࠸ࡿࡢ࡛༢⣧࡟ࡣẚ㍑࡛ࡁ
࡞࠸ࡀ㸪↝⤖ W 㐽࡬࠸ࡢ 50 KeV ࠿ࡽ 2000
KeV ࡲ࡛ࡢ✚⟬ BKG ィᩘ⋡ࡣ㸪㔠ἑᇛ Pb
㐽࡬࠸ࡢ 1.6 cpm ࠿ࡽ 7.9 cpm ቑຍࡋ 9.5
Fig.1 BKG spectrum of W shield.
cpm ࡜࡞ࡗࡓࠋ୺࡞ࣆ࣮ࢡࡣ 40K (1461 keV
࡛ 0.31 cpm㸪㔠ἑᇛ Pb ࡢ 44 ಸ) 㸪214Pb㸪214Bi (609 keV ࡛ 0.13 cpm㸪ྠ 26 ಸ)㸪228Ac㸪208Tl㸪࡞࡝࡛࠶ࡗࡓࠋ᭱ࡶప࢚ࢿࣝࢠ࣮ࡢࣆ࣮ࢡࡣ W ࡢ X ⥺࡛࠶ࡿࠋ210Pb ࡣぢࡽࢀ࡞࠸ࠋࡲࡓ㸪70 keV ࠿ࡽ 200 keV ࡢ㛫࡟ࣆ࣮ࢡࡣ඲ࡃぢࡽࢀ࡞࠸ࠋࡇࡢ↝⤖ W 㐽࡬࠸ࡣ㸪ᆅୖ࡛㛗᫬㛫ᨺ⨨ࡋ㸪OUL ࡟ᣢࡕ㎸ࡳᚋ┤ࡕ࡟タ⨨ࡋ ᐃࡋࡓࡀ㸪⎔ቃ୰ᛶᏊᨺᑕ໬࡛⏕ᡂࡍࡿ 187W (༙ῶᮇ 23.7 ᫬㛫)ࡢ 686 keV ࡣࡈࡃഹ࠿࡛࠶ࡗࡓࠋ௒ᅇヨసࡋࡓ↝⤖ W 㐽࡬࠸ࡣ㸪OUL ࡢ㐽࡬࠸࡟⏝࠸ࡿ࡟ࡣ BKG ࡀ㧗࠸ࠋࡋ࠿ࡋ㸪✚⟬ BKG ቑຍศࢆ⪃៖ࡍࡿ࡜㸪70 keV ࠿ࡽ 200 keV ࡢᐃࡸ U㸪Th ⣔ิ௨እࡢ᰾✀ࡢ ᐃ࡟ࡣ฼⏝࡛ࡁࡿྍ⬟ᛶࡀ࠶ࡿࠋ
Tungsten shield for low level counting
HAMAJIMA Y.
− 60 −

1P06

଻㓚ភ⟎ⅣႺ⹜ᢱߩᱜ⏕ߥᭂᓸ㊂ಽᨆߩߚ߼ߩࠗࠝࡦ੤឵ಽ㔌ᴺߩ㐿⊒ේሶജᯏ᭴ ٤ችᧄ࡙࠲ࠞ‫ޔ‬቟↰ஜ৻㇢‫ޔ‬㑆ᨩᱜ᣿‫⾆᧛ᧁޔ‬ᶏ‫⒁ޤߦ߼ߓߪޣ‬ኒ⵰ߦⴕࠊࠇࠆᩭ㐿⊒ߥߤᧂ↳๔ේሶജᵴേߩ∥〔ࠍត⍮ߔࠆߚ߼ߩᛛⴚ⊛ᚻᴺߣߒߡ‫ޔ‬IAEAߪේሶജ㑐ㅪᣉ⸳ߩౝㇱ෸߮๟ㄝࠍ✎⵾ߩᏓߢ᜞߈ขߞߡណขߒߚᭂᓸ㊂ᩭ‛⾰ߩห૏૕Ყಽᨆࠍዉ౉ߒߡ޿ࠆ‫ޕ‬ᚒ‫ߩߘߪޘ‬ಽᨆߦᔅⷐߥUߣPuߩᭂᓸ㊂ൻቇಽ㔌ᴺ
ࠍ㐿⊒ߒߡ޿ࠆ‫ޕ‬ICP-MSߦࠃࠆᭂᓸ㊂ಽᨆߦ߅޿ߡಽᨆ⹜ᢱߩWỚᐲ߇Uࠃࠅ߽㜞޿ߣ‫ޔ‬Uห૏૕ߩࡇ࡯ࠢߦ㊀ߥࠆWߩಽሶࠗࠝࡦ㧔184W16O31H(233)‫ޔ‬186W16O3(234)‫ޔ‬186W16O31H(235)㧕
߇ᱜ⏕ߥUߩห૏૕ಽᨆࠍᅹߍࠆ‫ࡦ࡜࠙ޔߚ߹ޕ‬ಽᨆࠍⴕ߁ߚ߼ߦᚒ‫߇ޘ‬ㆡ↪ߒߡ޿ࠆႮ㉄♽㒶ࠗࠝࡦ੤឵ಽ㔌ᴺߢߪW߇Uߣߣ߽ߦṁ಴ߒߡߒ߹߁ߚ߼‫ޔ‬ಽ㔌ߒߚUಽ↹߆ࠄWࠍ㓁ࠗࠝࡦ੤឵ߥߤߩಽ㔌ᴺߢ㒰෰ߔࠆᔅⷐ߇޽ߞߚ‫ߩౕེߪߦࠇߎޕ‬Ḱ஻߿ಽ㔌૞ᬺߦᤨ㑆߇߆߆ࠆ਄‫⹜ޔ‬ᢱಣℂ૞ᬺߩჇടߦ઻ߞߡ⹜⮎߿᮸⢽╬߆ࠄU߇ᷙ౉ߔࠆᯏળ߇Ⴧ߃ࠆߥߤߩ໧㗴߇޽ߞߚ‫ߢߎߘޕ‬ൻቇಽ㔌૞ᬺࠍ◲⚛ൻߔࠆߚ߼‫ޔ‬ᣢሽߩUߣPuߩ㒶ࠗࠝࡦ੤឵ಽ㔌ᴺߦUߣWߩಽ㔌ㆊ⒟ࠍㅊടߔࠆߎߣࠍ⠨߃ߚ‫ޕ‬HCl + HFᷙวṁᇦߦࠃࠆWߩࠗࠝࡦ੤឵ಽ㔌߇ലᨐ⊛ߢ޽ߞߚߩߢႎ๔ߔࠆ‫ޕ‬‫ޣ‬ታ㛎ᣇᴺ‫ (ࡓ࡜ࠞ⵾ࡦ࡟࠴ࠛ࡝ࡐޤ‬4mmI70 mm [ࠞ࡜ࡓኈ㊂(CV) 0.84 ml])ߦ⹣߼ߚ㒶ࠗࠝࡦ੤឵᮸⢽(ਃ⪉ൻᚑ⵾CA08P, Cl㧙ᒻ‫ޔ‬75-150µm)ࠍࠗࠝࡦ੤឵ಽ㔌ߦ↪޿ߚ‫⹜ޕ‬ᢱߪỚᐲᣢ⍮ߩICP-MSᩞᱜ↪Wṁᶧ(⹜ᢱ㊂㧦9 ng)ߣ233Uࠬࡄࠗࠢṁᶧ(⹜ᢱ㊂㧦2.2 ng)ࠍᷙวߒߚ߽ߩࠍ↪
޿ߚ‫ޕ‬9 M HClṁᶧߦ⺞ᢛߒߚ⹜ᢱࠍࠞ࡜ࡓߦᵹߒߡUߣWࠍๆ⌕ߐߖߚᓟ‫⚵ޔ‬ᚑߣᶧ㊂ࠍᄌ߃ߚHCl + HFᷙวṁᇦࠍᵹߒߡਔర⚛ࠍಽ㔌ߒߚ‫ޕ‬ᓧࠄࠇߚṁ಴ᶧࠍ 2㧑⎣㉄ṁᶧߦ⺞ᢛߒ
ߡWߣUࠍICP-MSߢቯ㊂ߒߚ‫ޕ‬ਔర⚛ߩಽ㔌ᕈ⢻ߪṁ㔌ᦛ✢ࠍ૞ᚑߒߡᬌ⸛ߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ࠆߥ⇣ޤ‬㧞ߟߩᣇᴺ‫ޔ‬ԘU ಽ㔌ߦవ┙ߜ W ࠍ㒰෰ߔࠆᣇᴺߣ‫ޔ‬ԙW ࠍṁ಴ߐߖ
ߕߦ U ࠍಽ㔌ߔࠆᣇᴺߘࠇߙࠇߦᦨㆡߥᷙวṁᇦߩ⚵ᚑࠍᬌ⸛ߒߚ‫ޕ‬Ԙߩᣇᴺߦኻߒߡߪ‫ޔ‬ṁ㔌ᶧߩ HCl Ớᐲࠍ 7 M㨪9 M ߣᄌ߃ߡ߽ W ߩṁ㔌ࡇ࡯ࠢ૏⟎ߪᄌࠊࠄߥ߆ߞߚ߇‫ޔ‬8 M ߩߣ߈ṁ㔌ࡇ࡯ࠢߩ᏷߇ᦨ߽㍈ߊߥߞߚ‫ޔߚ߹ޕ‬HF Ớᐲࠍ 0.2M ߆ࠄ 1M ߳ߣ㜞ߊߔࠆߦᓥߞ
ߡ W ߪᣧߊṁ㔌ߒߚ߇‫ޔ‬W ߣߣ߽ߦṁ಴ߔࠆ U

60㊂߽Ⴧടߒߚ‫ޕ‬8 M HCl + 0.5 M HF ᷙวṁᇦࠍࠇߚ‫ޕ‬ԙߩᣇᴺߦኻߒߡߪ‫ޔ‬0.1 M HCl + 1 M HF
ࠍ↪޿ߚಽ㔌߇ലᨐ⊛ߢ޽ߞߚ‫ޕ‬࿑ 1 ߦ U ߣ W

Recovery / %ߩ 0.5㧑⒟ᐲߒ߆ṁ಴ߖߕ⦟޿ಽ㔌ᕈ⢻߇ᓧࠄ

U

50

10 ml (12 CV)ߢಽ㔌ߒߚ႐ว‫ޔ‬W ಽ↹ߦߪ U ㊂

ߩṁ㔌ᦛ✢ࠍ␜ߔ‫ޕ‬ṁ㔌ᶧࠍ 10㨪15 ml (12㨪

40
30
20

18CV)ᵹߔߎߣߢ U ࠍ߶߷ቢోߦ࿁෼ߢ߈‫߆ޔ‬10ߟ W ߩṁ಴₸ࠍ 0.1㨪0.5㧑ߦᛥ߃ࠆߎߣ߇಴᧪

0ߚ‫ࡦ࡜࠙ޕ‬ṁ಴ಽ↹ߦ߅ߌࠆ W ߩ㒰ᨴଥᢙߪԘ
߇ 500‫ޔ‬ԙ߇ 700 ߢ޽ࠅ‫ޔ‬ਔ⠪ߣ߽ߦታ⹜ᢱߦ
ᔕ↪ߢ߈ࠆߎߣ߇ಽ߆ߞߚ‫ޕ‬

W
0

5

10

15

Eluent volume / ml20

25

Fig. 1: Elution curves of U and W with the
mixture of 0.1 M HCl + 1 M HF.

*ᧄႎ๔ߦߪᢥㇱ⑼ቇ⋭߆ࠄߩᆔ⸤ߢታᣉߒߡ޿ࠆ‫଻ޟ‬㓚ភ⟎ⅣႺಽᨆ㐿⊒⺞ᩏ‫ߩޠ‬ᚑᨐߩ৻ㇱ߇฽߹ࠇࠆ‫ޕ‬
Ion-exchange separation for accurate trace analysis of environmental samples for safeguards
MIYAMOTO, Y., YASUDA, K., MAGARA, M., KIMURA, T.
− 61 −

1P07

Particle size distributions of 7Be-aerosols in surface air at
Nagano City
(Fac. of Edu., Shinshu Univ.) ٤H. Muramatsu, T. Konuma, and A. Miyajima

Introduction For the particle size distribution of radioactive aerosols, several observations havebeen made so far in various radionuclides, mainly in fission products released into atmosphere in
nuclear accidents. For the aerosol particles attached by 7Be, scarce observations have been reported
due to its low concentrations in surface air. Because of not only being in low radioactivity
concentration but also having extremely small diameter, suitable method for the determination of its
size distribution has been hardly found for 7Be-aerosol particles. Then, for this kind of radioactive
aerosols, it is almost impossible to utilize other techniques such as diffusion method (parallel-plate or
screen mesh diffusion battery) that is quite effective to aerosols in submicron region.
Air samplings were carried out at the sampling station on the roof of the building(height above ground level 12 m) located in our university campus (36º39´N, 138º12´E). Aerosol
particles were collected on glass fiber filters (GB100R, Toyo Roshi Kaisha Ltd.) using theAndersen-type classifier (AH-600, SIBATA) combined with the high volume air sampler (HV-500F,
SIBATA). When a constant flow rate of 566 l/min is adopted, according to their particle size, aerosols

Experimental

4k-channel pulse height analyzer for (3-4)u105 s.
Results and discussion About 80% of collected
activities were found in the back-up filter, which meansthat the majority of 7Be activity would attached toaerosols with the diameters less than 1.1 Pm. (See Fig.1)
This has been already known and no information has
been given for sub-micron aerosols, when using this typeof classifier. However, apart from sub-micron size
aerosols, three middle data in Fig.1, which certainly
correspond to particle-size ranges of 3.3-7.0, 2.0-3.3 and㪙㪼㪄㪎㩷㪺㫆㫅㪺㪼㫅㫋㫉㪸㫋㫀㫆㫅㩷㩿㫄㪙㫈㪆㫄㪵㪊㪀are collected on five each glass fiber filters, i.e., over 7.0 Pm in the first-stage, 3.3-7.0 Pm in thesecond stage, 2.0-3.3 Pm in the third stage, and 1.1-2.0 Pm in the fourth stage, respectively. Aerosols
smaller than 1.1 Pm in diameter are finally collected on a back-up filter. Typical total volume wasabout 10000~15000m3. The 477-keV J-rays from 7Be in㪍㪅㪇
the sample was counted by a hyperpure germanium㪌㪅㪇detector (HPGe; CANBERRA) connected with a
㪋㪅㪇
㪊㪅㪇
㪉㪅㪇
㪈㪅㪇
㪇㪅㪇

䎟䎔䎑䎔

䎔䎑䎔䎐䎕䎑䎓
䎕䎑䎓䎐䎖䎑䎖 䎖䎑䎖䎐䎚䎑䎓㪧㪸㫉㫋㫀㪺㫃㪼㩷㫊㫀㫑㪼㩷㩿㱘㫄㪀䎡䎚䎑䎓

Fig.1 Observed 7Be activities in each stage.

1.1-2.0 Pm, were used for the estimation of Activity
Median Aerodynamic Diameter (AMAD) under theassumption that the particle size distribution of
7
Be-aerosols in surface air is in a lognormal and unimodal
distribution. (See Fig.2) Estimated AMADs in earlysummer and in autumn were 0.43 Pm and 0.55 Pm,
respectively, which should correspond to the mean valueof so-called accumulation mode aerosols formed bycoagulation of ultrafine aerosols.

Fig.2 Probability plot under the assumptionthat the particle size distribution of
7
Be-aerosols in surface air is in a lognormal
and unimodal distribution.

Particle size distributions of 7Be-aerosols in surface air at Nagano City
MURAMATSU, H., KONUMA, T., MIYAJIMA, A.
− 62 −

− 63 −

1P09ᐢፉේ῜ࡈࠜ࡯࡞ࠕ࠙࠻ 236U ߩត⚝
㊄ᴛᄢ࡮LLRLᐢፉᄢ࡮ℂ ᐢፉᄢ࡮ේක⎇ ੩ᄢේሶἹ 9KGPᄢ  ٤Ꮉวஜᄥ ‫ޔ‬ဈญ✍ ᤊᱜᴦ ੹ਛືੑ 5VGKGT2ጊᧄ᡽௾ 

236U (108 atoms/g-soil)‫ޤߦ߼ߓߪޣ‬ᐢፉේ῜↱᧪ߩࡈࠜ࡯࡞ࠕ࠙࠻ಽᏓࠍ⺞ᩏߔࠆߎߣߪ‫ޔ‬ේ῜ᓟߩᱷ⇐᡼኿✢ߦࠃࠆⵍᦑ✢㊂⹏ଔߩⷰὐ߆ࠄ㕖Ᏹߦ㊀ⷐߢ޽ࠆ‫ߢ߹ࠇߎޕ‬࿯ფਛߩ 137Cs ࠍ↪޿ߡߩಽᏓ⺞ᩏ߇ᢙᄙߊߥ
ߐࠇߡ߈ߚ߇㧘ᧂߛ⸃᳿ߦ⥋ߞߡ޿ߥ޿‫ޕ‬ᐢፉߦᛩਅߐࠇߚේሶ῜ᒢ߇࠙࡜ࡦ῜ᒢߢ޽ࠆߎ
ߣߦ⌕⋡ߔࠆߣ‫ޔ‬235U(n,J ᩭ෻ᔕߢ 236U (T1/2㧦Ddecay, 2.342x107 y)߇↢ᚑߒߡน⢻ᕈ߇޽ࠆ‫ޕ‬ේ῜↱᧪ߩ 236U ߩ↢ᚑ㊂ߪ‫ ߘࠃ߅߅ޔ‬4.71022 (236U ේሶᢙ)ߣ⹜▚ߐࠇࠆ‫⎇ᧄޕ‬ⓥߢߪ‫࠲ޔ‬ࡦ࠺ࡓടㅦེ⾰㊂ಽᨆ⸘ AMS ߦࠃࠆᓸ㊂ 236U ᷹ቯࠍ⹜ߺࠆߣ౒ߦ㧘ᐢፉ⴫ጀ࿯ფࠍ↪޿ߡᐢፉේ῜↱᧪ߩࡈࠜ࡯࡞ࠕ࠙࠻ߩಽᏓ⸃᣿ߩน⢻ᕈࠍ⹜ߺߚ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬ಽᨆ⹜ᢱߪ‫ޔ‬ᐢፉᄢቇ߆ࠄ⼑ᷰߐࠇߚ࿯ფ(ᤘ๺ 51‫ޔ‬53 ᐕᐲណข‫⴫ޔ‬ጀ 0-10cm ߹ߢ)෸߮ᐢ
ፉ(7 ࿾ὐ)‫ޔ‬⍹Ꮉ(3 ࿾ὐ)ߩ⸘ 10 ࿾ὐߢណขߒߚᧂᠣੂߣ⠨߃ࠄࠇࠆ࿯ფ(2008,2009 ᐕណข‫ޔ‬
⴫ጀ 0-30cm ߹ߢ)ࠍ↪޿ߚ‫ޕ‬236U㧔238U㧕ߪ᛽಴‫ޔ‬ൻቇಽ㔌ᓟ‫ࡦ࡯ࠖ࠙ޔ‬ᄢቇߩ AMS ߦࠃࠅ࠙࡜ࡦේሶᢙᲧ (236U/238U) ᷹ቯࠍⴕ޿‫ޔ‬᛽಴ 238U ߩ᷹ቯߪD✢᷹ቯߦࠃࠅⴕߞߚ‫ޕ‬236U/238UේሶᢙᲧ෸߮᛽಴ 238U ㊂߆ࠄ‫ޔ‬࿯ფਛߦ฽߹ࠇࠆ 236U ⫾Ⓧ㊂ࠍ⷗Ⓧ߽ߞߚ‫ߚ߹ޕ‬࿯ფਛߩࡈ
ࠜ࡯࡞ࠕ࠙࠻ᩭ⒳ߢ޽ࠆ 137Cs ‫ޔ‬239+240Pu ࠍߘࠇߙࠇJ✢᷹ቯ‫ޔ‬D✢᷹ቯ㧔৻ㇱ ICP-MS㧕ߦࠃࠅ᷹ቯߒ‫ޔ‬ᐢፉේ῜ߣࠣࡠ࡯ࡃ࡞ࡈࠜ࡯࡞ࠕ࠙࠻ 236U ߩ⼂೎ߦߪ㧘 236U/137Cs Ყ߅ࠃ߮236
U/239,240Pu Ყߢߩᬌ⸛ࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ᐢፉᄢቇ߆ࠄ⼑ᷰߐࠇߚ⴫ጀ࿯ფ(0-10cm, 0-30cm)ࠍ↪޿ߚ᷹ቯ⚿ᨐ(236U‫ޔ‬239+240Pu)ࠍ Fig.1
ߦ␜ߒߚ‫ޕ‬⍹Ꮉ⋵ߢណขߒߚ B.G.ߣߒߡߩ࿯ფ(0-30cm)ߩ 236U/239+240Pu Ყߪ‫(ޔ‬1.56r0.10)
1011(atoms/Bq)ߢ‫ ࠻࠙ࠕ࡞࡯ࠜࡈ࡞ࡃ࡯ࡠࠣޔ‬236U ߩሽ࿷ࠍ⏕⹺ߒߚ‫ޕ‬ᐢፉ࿯ფਛߦ฽߹ࠇࠆ
236
2.5
U ߪ 2.0x1011-2.6x1013
Hiroshima soil sample
atoms/m2 ߩ▸࿐ߢᬌ಴ߐ
: 0-10cm
2.0
236
239+240Pu Ყࠇ ߚ ߇ ‫ ޔ‬U/
: 0-30cm(Fig.1)ߢᲧセߔࠆߣ⍹Ꮉ
1.5
ߩ 236U/239+240Pu Ყߣߩ᦭ᗧߥᏅߪ⏕⹺ߢ߈ߥ߆ߞ
1.0
ߚ‫ޔࠄ߆ߣߎߩߎޕ‬ᐢፉ࿯ფਛߩ 236U ߪࠣࡠ࡯ࡃ
0.5
gradient: (1.53㫧0.03)㬍1011 (atoms/Bq)y-intercept: (-1.33㫧0.13)㬍106 (atoms/g-soil)࡞ࡈࠜ࡯࡞ࠕ࠙࠻ߦࠃࠆ
0
߽ߩ߇ᡰ㈩⊛ߢ޽ࠅ‫ޔ‬ᐢ
0
0.5
1.0
1.5
2.0
236
ፉේ῜↱᧪ߩ U ߩነਈ
239+240Pu (mBq/g-soil)ߪ㕖Ᏹߦዋߥ޿ߎߣ߇␜
ໂߐࠇߚ‫ᧄޕ‬ᐕળߢߪ‫ ޔ‬Fig.1 Results of radionuclides in surface soil samples from Hiroshima Prefectureߐࠄߦᐢፉ‫ޔ‬⍹Ꮉ࿯ფߦߟ޿ߡ 236U‫ޔ‬137Cs ‫ޔ‬239+240Pu ߩᷓᐲಽᏓߩ⚿ᨐࠍ␜ߒ‫ߩࠄࠇߎޔ‬ᩭ⒳ߩ᜼േߦߟ޿ߡ߽⼏⺰ࠍⴕ߁੍ቯߢ޽ࠆ‫ޕ‬Research of Local Fallout 236U produced by Hiroshima atomic bomb
KAWAI, K., SAKAGUCHI, A., HOSHI, M., IMANAKA, T., YAMAMOTO, M.
− 64 −

1P10ᄤὼ᳓ਛߩ࡜࠼ࡦỚᐲᄢᆄᅚሶᄢ࡮␠ળᖱႎ ٤ၳౝ౏ሶ

‫ޤߦ߼ߓߪޣ‬᳓ߪ↢๮ߩḮߢ޽ࠅੱ㑆ࠍߪߓ߼ߣߒߡ࿾਄ߩ޽ࠄࠁࠆ↢๮ߦߣߞߡᰳߊߎߣ
ߩ಴᧪ߥ޿⾆㊀ߥⅣႺ⾗Ḯߢ޽ࠆ‫ޕ‬ㄭᐕੱ㑆ᵴേߩ᜛ᄢߣ⊒ዷߦ઻ߞߡ‫ߔ߹ߔ߹ޔ‬᳓ߩ㔛ⷐ߇᜛ᄢߐࠇߡ᧪ߡ߅ࠅ‫⾆ޔ‬㊀ߥ᳓ߩ଻⼔ߣᵴ↪ߩะ਄ߩߚ߼‫ޔ‬࿖߿ฦ࿾ၞߢ‫ޟ‬ฬ᳓‫ߩޠ‬ᜰቯ߇ⴕࠊࠇߡ޿ࠆ‫ޕ‬ᄤὼ᳓ߦߪḝ᳓‫ޔ‬࿾ਅ᳓‫ޔ‬ᴡᎹ᳓‫ޔ‬᷷ᴰ᳓╬ᄙߊߩ⒳㘃߇޽ࠆ߇‫޿ߩߘޔ‬ߕࠇߦ߽ᄙ߆ࠇዋߥ߆ࠇ࡜࠼ࡦ߇฽߹ࠇߡ޿ࠆ‫ޕ‬ᄤὼ᳓ߩၮᧄ࠺࡯࠲෼㓸ߩ৻Ⅳߣߒߡ 1985
ᐕⅣႺᐡ߇ో࿖ⷙᮨߢᜰቯߒߚ‫ޟ‬ฬ᳓⊖ㆬ‫ߩߘߣޠ‬๟ㄝߩᄤὼ᳓ਛߩ࡜࠼ࡦỚᐲࠍ᷹ቯߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬᷹ቯߪ࠻࡞ࠛࡦ᛽಴-ᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࡦ᷹ቯᴺߦࠃࠅⴕߞߚ‫ޕ‬หᤨߦ pH,㔚᳇વዉᐲ߽⸘᷹ߒߚ‫ޕ‬‫⚿ޣ‬ᨐ෸߮⠨ኤ‫ޤ‬ ⚿ᨐߩ৻ㇱࠍ⴫ 1 ߦ␜ߒߚ‫ࡦ࠼࡜ޕ‬Ớᐲ߇ᦨ߽㜞߆ߞߚߩߪᐢፉ⋵ᐭਛ↸ߩ‫ޟ‬಴วᷡ᳓‫ޠ‬ߢ޽ࠅ‫ޔ‬㐳㊁⋵㘵↰Ꮢߩ‫₎ޟ‬ᐶߩᴰ‫ޕߚ޿⛯ߦࠇߘ߇ޠ‬⴫ 1  ᷹ቯ⚿ᨐ㧔৻ㇱ㧕
No.

ฬ᳓ߩฬ⒓

᳓ߩᒻᘒ

͠

ǴS/cm

pH

Rn㧔Bq/l㧕

4

ን↰ߩᷡ᳓

ḝ᳓

17.3

205.4

6.4

5.99 ± 0.08

11

ജ᳓

ḝ᳓

12.3

186.3

7.6

14.5 ± 0.07

21㘑ᏓᎹ࡮ᣣᧄ᳓

ḝ᳓

10.6

180.5

8.5

1.07 ± 0.0323߅㣔ߩ㆏ḝ᳓⟲

ḝ᳓

15.4

171.5

6.5

21.5 ± 0.07

36

ⅶഀߩṚ

ḝ᳓

11.9

91.8

8.7

12.3 ± 0.08

42

₎ᐶߩᴰ

ḝ᳓

11.4

36.4

7.1

66.0 ± 0.15

63

ᄤߩ⌀ฬ੗

ḝ᳓

13.9

116.6

9.7

3.84 ± 0.07

70

಴วᷡ᳓

ḝ᳓

18.7

197.0

6.2

98.9 ± 0.26

86

ፉේḝ᳓⟲

ḝ᳓

16.3

202.6

6.2

15.2 ± 0.13

93

┻↰ḝ᳓⟲

ḝ᳓

16.7

137.3

7.7

2.25 ± 0.06

‫ޟ‬಴วᷡ᳓‫ ޠ‬ᐢፉᏒߩ᧲஥ᐭਛ↸ߩ૑ቛⴝߩ߹ࠎਛߦ 2000 ᐕ߽೨߆ࠄḝ಴ߒ࿾ၞߩੱ‫ߩޘ‬↢ᵴ↪᳓ߣߒߡ೑↪ߐࠇߡ޿ࠆ‫ޕ‬᳓Ḯߪ᭑Ꮉߩ਄ᵹ‫ޔ‬᳓ಽጽߩᅏ߆ࠄ࿾ਅࠍㅢߞߡḝ߈಴ߒߡ޿ࠆߣ⸒ࠊࠇߡ޿ࠆ‫ߩߎޕ‬ઃㄭ৻Ꮺߩၮ⋚ߪࡍࠣࡑ࠲ࠗ࠻㧔Ꮒ᥏⧎ፘጤጀ㧕ߢ࠻ࡠࠧࡓ⍹‫ޔ‬ⶊࠇࠎ⍹╬ᄙᢙߩ᡼኿ᕈ㋶‛ࠍ฽ࠎߢ޿ࠆ‫ޕ‬ḝ᳓ߪਛ࿖ጊ⣂ߩ㒠᳓ࠍ⿠Ḯߣߒߚફᵹ᳓ߢၮ
⋚ጤߩᓇ㗀ߦࠃࠅ࡜࠼ࡦ฽᦭㊂߇㜞ߊߥࠆ‫ޕ‬‫₎ޟ‬ᐶߩᴰ‫ ޠ‬㘵↰Ꮢߩർ⷏ߦߘ߮߃ࠆ㘑⿧ጊߩධ㣽ߦḝ಴ߒߡ޿ࠆ‫ޕ‬㘑⿧ጊߪਛᄩࠕ࡞ࡊࠬጊ
♽ߩ৻ㇱࠍߥߒ‫⊕ޔ‬੝♿ߩ⧎ፘጤࠍਥߣߒߚᷓᚑጤ㘃ߢ᭴ᚑߐࠇߚጊߢ޽ࠆ‫ޕ‬ᤄ߆ࠄ⨥ߩḡߦㆡߒߚ᳓ߣߒߡ⍮ࠄࠇߡ޿ࠆ‫ޕ‬ ࡜࠼ࡦỚᐲಽᏓ࿑ࠍឬ޿ߡߺࠆߣ߶ߣࠎߤߩฬ᳓߇ 25Bq/l એਅߢ޽ࠆਛߢ਄⸥ߩḝ᳓ߪ߆ߌ㔌ࠇߡ㜞޿࡜࠼ࡦỚᐲࠍ␜ߒߚ‫ޕ‬ᄙߊߩฬ᳓ߪ᳓㆏᳓Ḯ‫↢ޔ‬ᵴ↪᳓‫ߩ⨥ޔ‬ḡ↪᳓╬ߣߒߡ೑↪ߐࠇߡ޿ࠆ߇‫ޔ‬ㄭᐕḝ಴㊂ߩᷫዋ߿ੱὑ⊛ᳪᨴ߇ᔃ㈩ߐࠇࠆ߽ߩ߽಴ߡ᧪ߡ޿ࠆ‫ޕ‬Radon concentration in natural water
HORIUCHI, K.
− 65 −

1P11᳓⹜ᢱ߆ࠄߩ࡜࠼ࡦߩᢔㅺߦ㑐ߔࠆታ㛎⊛ᬌ⸛㊄ᴛᄢ㒮⥄ὼ 㧘㊄ᴛᄢℂᎿ  ٤ጊ↰⸥ᄢ 㧘਄᧖ᱜ᮸ 㧘૒⮮ ᷤ 㧘ᮮጊ᣿ᒾ 㧘ਛ⷏ ቁ 

‫ ࡦ࠼࡜ ޤߦ߼ߓߪޣ‬Rn ಽᨆ↪⹜ᢱ᳓ࠍណขߔࠆ㓙㧘 Rn ᢔㅺ㒐ᱛ߇ਇนᰳߢ޽ࠆ‫ࠃߩߎޕ‬߁ߥⷰὐߦ┙ߞߡ࿾ਅ᳓ḝ಴ὐ߆ࠄߩ࿾⴫〒㔌ߣߣ߽ߦ Rn Ớᐲ߇ߤߩࠃ߁ߦᄌൻߔࠆ߆ࠍ
ࡈࠖ࡯࡞࠼ߢ᷹ቯߒߚ⚿ᨐ㧘 Rn Ớᐲߪ〒㔌ߣߣ߽ߦᷫዋߒ㧘✭߿߆ߦᵹࠇࠆᣇ߇ㅦߊᵹࠇ
ࠆᣇࠃࠅ߽ᢔㅺߩഀว߇ዋߥ޿ߎߣ߇ಽ߆ߞߚ‫߆߶ߩߘޕ‬᳇᷷߿᳇࿶㧘ᄢ᳇ߣߩធ⸅㕙Ⓧ╬
߇ᢔㅺ₸ߦᓇ㗀ߔࠆߣ⠨߃ࠄࠇࠆ‫ ߚ߹ޕ‬222Rn ߩᆷᩭ⒳ߢ޽ࠆ 210Pb ߿ 210Po ࠍ᷹ቯߔࠆ㓙ߦߪ⹜ᢱャㅍᤨߦ߅ߌࠆំࠇ߿ャㅍᤨ㑆╬ߦࠃߞߡ Rn ᢔㅺ㊂ߪᄌൻߔࠆߣ⠨߃ࠄࠇࠆ‫⎇ᧄޕ‬ⓥߢߪ㧘᳓⹜ᢱ߆ࠄߩ Rn ᢔㅺߦ㑐ଥߔࠆߣ⠨߃ࠄࠇࠆ⒳‫ߡ޿ߟߦ࡯࠲࡯ࡔ࡜ࡄߩޘ‬㗅ᰴᬌ⸛ߔࠆ
ߎߣࠍ㐿ᆎߒߚ‫ޕ‬‫ޣ‬ታ 㛎‫ ޤ‬ታ㛎ߦ૶↪ߒߚ᳓⹜ᢱߪ㧘৻⥸ߦ Rn ࠍᄙߊ฽߻ߣߐࠇࠆ࿾ਅ᳓ߢ޽ࠆ‫ޕ‬⍹Ꮉ⋵㊄ᴛᏒߩක₺ጊਛ⣻ߩḝ᳓࿾ὐ߆ࠄ࿾ਅ᳓߇ᵹࠇ಴ߡ޿ࠆߩߢ㧘ߘߩ࿾ਅ᳓ࠍߘߩ߹߹૶↪
ߒߚ‫ޕ‬ታ㛎ߪ㧘Rn ᢔㅺߦᓇ㗀߇޽ࠆߣߐࠇࠆࡄ࡜ࡔ࡯࠲࡯㧔ᵹㅦ㧘ᤨ㑆㧘᷷ᐲ㧘࿶ജ㧘᳓ᷓ╬㧕ࠍ୘೎ߦᄌേߐߖࠆࠃ߁㧘߶߆ߩࡄ࡜ࡔ࡯࠲࡯ࠍ࿕ቯߒ㧘ᵈ⋡ߒߡ޿ࠆࡄ࡜ࡔ࡯࠲࡯ߩ
ߺࠍᄌേߐߖ㧘ᄌേ೨ᓟߩ࠺࡯࠲߆ࠄ Rn ᢔㅺ₸ࠍᬌ⸛ߒߚ‫ޕ‬᳓⹜ᢱਛߩ Rn ࠍ᷹ቯߔࠆߚ߼
ߦ㧘⹜ᢱ᳓ 50 mL ߣࠪࡦ࠴࡟࡯࠲㧔࠻࡞ࠛࡦ 500 mL ߦ PPO 2 g ߣ POPOP 0.05 g ࠍṁ⸃ߒߡ⺞⵾㧕50 mL ࠍ 100 mL ߩ࠹ࡈࡠࡦ߮ࠎߦ౉ࠇ㧘⋥ធᴺߦߡᶧ૕ࠪࡦ࠴࡟࡯࡚ࠪࡦࠞ࠙ࡦ࠲࡯
ࠍ↪޿ߡ᷹ቯߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫࡯࠲࡯ࡔ࡜ࡄޤ‬ᄌേߩ৻଀ࠍ࿑㧝ߦ␜ߔ‫ޕ‬100 mL ߩ᳓⹜ᢱࠍࠬ࠲࡯࡜࡯ߢᠣᜈߒ㧘ᠣᜈߩ࿁ォᢙߣᡬᜈᤨ㑆ߦࠃߞߡ Rn ߇ߤߩࠃ߁ߦᢔㅺߔࠆ߆ࠍᬌ⸛ߒߚ⚿ᨐߢ޽ࠆ‫ޕ‬ᠣᜈ᧦ઙએ
ᄖߩ᧦ઙ߇৻ቯߩߣ߈㧘
0 rpm ߢߪ 5 ಽ᡼⟎ᓟߩ୯એᄖߪ Rn ᱷ⇐₸߇߶߷ 100 %ߦㄭ޿୯ࠍ␜ߒ㧘20 ಽ⒟ᐲߩ㕒⟎ߢ߽߶ߣࠎߤᢔㅺߒߥ޿ߎߣ߇ಽ߆ߞߚ‫ ߚ߹ޕ‬60 rpm㧘300 rpm ߢᡬᜈߒߚ⚿ᨐ㧘
5 ಽ㑆ߩᡬᜈߢ Rn ᱷ⇐₸߇ 90 %㨪80 %ㄭߊߦᷫዋߔࠆߎߣ߇ಽ߆ߞߚ‫ࠅ➅ޕ‬㄰ߒታ㛎߇ᔅⷐߢ޽ࠆ߇㧘࿑㧝ࠍ⷗ࠆ㒢ࠅ㧘ᡬᜈᤨ㑆ߦᲧ଀ߒߡ Rn ᱷ⇐₸߇ᷫዋߔࠆߎߣ߇ಽ߆ߞߚ‫߆ߣߎߩߎޕ‬ࠄ㧘ᠣᜈߦࠃߞߡ Rn
120

߇უࠇ㧘ߘࠇߦࠃࠅ Rn

100ߩᢔㅺ⚻〝߇⏕଻ߐࠇߡ޿ࠆ߽ߩߣ⠨߃ࠄࠇࠆ‫ޕ‬ᠣᜈߩ࿁ォᢙߣᱷ⇐₸ߩ㑐ଥߦߟ޿ߡߐ
ࠄߦ⹦⚦ߥᬌ⸛ࠍ⸘↹ߒߡ޿ࠆ‫ޕ‬ᱷ⇐₸㧔 %㧕ࠍ㐽ߓㄟ߼ߡ޿ࠆⓨ㑆

80

0 rpm

60

60 rpm40

300 rpm

20
0
0

5

10

15

20

ᤨ㑆㧔min㧕࿑ 1 ࿁ォᢙߣᡬᜈᤨ㑆

Experimental study on radon loss from water sample
YAMADA, N., UESUGI, M., SATO, W., YOKOYAMA, A., NAKANISHI, T.
− 66 −

25

1P12

ᣂẟ࡮ጊᒻ⋵Ⴚ㊄ਣ࿾ၞߩࡏ࡯࡝ࡦࠣ࿾ጀ᳓ਛࠦࡠࠗ࠼ߩ࠙࡜ࡦ♽೉ᩭ⒳
↥ᬺᛛⴚ✚ว⎇ⓥᚲ ࿾⾰⺞ᩏ✚ว࠮ࡦ࠲࡯ ٤㊄੗ ⼾࡮㑐 㓁ఽ࡮ᅏỈᐽ৻‫ޤߦ߼ߓߪޣ‬ⅣႺߦ߅ߌࠆᳪᨴ‛⾰ߩ࿾ਅ᳓⒖ⴕߦ㑐ߒߡߪ‫ޔ‬ᓥ᧪߆ࠄ㑐ᔃߩ㜞޿⺖㗴ߢ޽ࠆ߇‫ޔ‬ㄭᐕṁሽᘒߢߩ⒖ⴕߣ౒ߦ‫ޔ‬ᓸ⚦ߥࠦࡠࠗ࠼ߣ޿߁ᒻᘒߢߩ᜼േߦ㑐ᔃ߇㜞߹ߞߡ޿ࠆ‫ߦ․ޕ‬࿾ਅ᳓ᳪᨴ߿㜞࡟ࡌ࡞᡼኿ᕈᑄ᫈‛ߩ࿾ጀಣಽߦ㑐ㅪߒߚࠦࡠࠗ࠼
᜼േߦߟ޿ߡߪ‫ߥ⚦⹦ޔ‬᜼േࠍᛠីߔࠆߎߣ߇ᕆോߣߥߞߡ޿ࠆ‫৻ޕ‬ᣇ‫ߪࡦ࡜࠙ޔ‬ᄤὼߩ᡼
኿ᕈᩭ⒳ߢ޽ࠆߣหᤨߦ㜞࡟ࡌ࡞᡼኿ᕈᑄ᫈‛ਛߦ߽฽߹ࠇߡ޿ࠆᩭ⒳ߢ޽ࠅ‫ߩߘޔ‬ᄤὼߢߩ᜼േߪ࠽࠴ࡘ࡜࡞ࠕ࠽ࡠࠣߣߒߡ᦭↪ߥ⍮⷗ࠍឭଏߔࠆ߽ߩߣߒߡᵈ⋡ࠍ㓸߼ߡ޿ࠆ‫ߒޕ‬߆ߒ‫ޔ‬࿾ጀ᳓ਛߩ࠙࡜ࡦ♽೉ᩭ⒳ߣࠦࡠࠗ࠼᜼േ╬ߦߟ޿ߡߪ‫⎇ߛᧂޔ‬ⓥ଀߇ዋߥߊ᣿⏕ߥᬌ⸛߇ߥߐࠇߡ޿ߥ޿‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬࿾ਅ᳓ߩታᘒᛠីߩߚ߼ߦណขߐࠇߚ࿾ਅ᳓ߦߟ޿ߡ‫ޔ‬࠙࡜ࡦ♽೉ᩭ⒳ߣࠦࡠࠗ࠼᜼േࠍ⺞ߴߚߩߢ‫⚿ߩࠄࠇߎޔ‬ᨐߩ৻ㇱߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬‫⹜ޣ‬ᢱណขߣታ㛎ᣇᴺ‫ޤ‬ጊᒻ⋵ߣᣂẟ⋵ߩ⋵Ⴚઃㄭߦ૏⟎ߔࠆ㊄ਣ࿾ၞߪ‫ࡦ࡜࠙ޔ‬㋶ᓽតᩏ࿾ၞߣߒߡᤘ๺  ᐕઍ߆ࠄ⺞ᩏߐࠇߡ߈ߚ‫ޕ‬ᒰ࿾ၞ๟ㄝߪ‫⊕ޔ‬੝♿ߩጤ⦁⧎ፘጤ㘃ߩ਄ߦ‫ޔ‬ᣂ╙ਃ♿ߩ㊍᧮ጀ㧔ਥߣߒߡࠕ࡞ࠦ࡯࠭⾰⍾ጤ࡮␕ጤ㧕ߣ਄૏ߩਅ㑐ጀ㧔ᵆጤ࡮ࡌࡦ࠻࠽ࠗ
࠻ጀ㧕ߥߤ߇ၸⓍߒߡ޿ࠆ‫ޕ‬ᒰ࿾ၞߦជ೥ߐࠇߚሹᐩᷓᐲ⚂ O ߩ $T$T ߩઁߦࡑ࡞࠴ࡄ
࠶ࠞ࡯઀਄ߍߩ $T㧔ሹᐩᷓᐲ⚂ O㧕‫ߦࠄߐޔ‬ጊ㗂ઃㄭߩ $T㧔ሹᐩᷓᐲ⚂ O㧕╬ߩ੗ᚭ߆ࠄቯᦼ⊛ߦ࿾ጀ᳓ࠍណขߒߚ‫৻ߩߘޕ‬ㇱߦߟ޿ߡᢙ࿁ߦࠊߚࠅ᳓⾰߿࠙࡜ࡦ♽೉ᩭ⒳ࠍᬌ
⸛ߒߚ‫৻ޕ‬ᣇ‫ޔ‬࿾ጀᶐㅘ᳓߿ḝ᳓ߥߤࠍ⃻࿾ߢណข⋥ᓟߦ ‫ޔޔޔޔ‬ǴO ߩࡔࡦࡉ࡜ࡦࡈࠖ࡞࠲࡯ߢࠈㆊߒ‫ࠍ㉄ޔ‬ട߃ߡታ㛎ቶߦᜬߜᏫߞߡಽᨆ‫ࠢࡦ࠲࡝ࡐޔߪߚ߹ޔ‬ߦ⹜ᢱ᳓ࠍណขߒ‫ޔ‬ታ㛎ቶߦᜬߜᏫߞߡ߆ࠄ౏⒓ಽ↹ಽሶ㊂  ਁ‫ߩਁ ޔਁ ޔਁ ޔ‬㒢ᄖỹㆊ⤑ߢࠈㆊߒߡಽᨆߥߤࠍߒߚ‫੍ߦࠄߐޕ‬ኤ⊛ߦ $T ੗ᚭߩ࠙࡜ࡦỚ㓸ㇱઃㄭߩᷓᐲ
O ߢណขߐࠇߚᧂಣℂ⹜ᢱ ㉄߇ήᷝട ࠍ↪޿‫ޔ‬ǴO‫ޔ‬PO ࡔࡦࡉ࡜ࡦࡈࠖ࡞
࠲࡯‫ޔ‬෸߮ಽ↹ಽሶ㊂ & ߩ࠙࡞࠻࡜ࡈࠖ࡞࠲࡯࡙࠾࠶࠻ 75;㧔ࠕ࠼ࡃࡦ࠹࠶ࠢ␠⵾㧕ࠍ↪޿ߡࠈㆊߒ‫ޔ‬ಽ㔌ߒߚฦࡈ࡜࡚ࠢࠪࡦߩಽᨆࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ជ೥ೋᦼߩ੗ᚭ߆ࠄߩ࿾ጀ᳓ߢߪ‫ޔ‬$T ߅ࠃ߮ $T ߢណขߒߚ  ᐕߩ࿾ጀ᳓ߩ࠙࡜ࡦ♽೉ᩭ⒳ࠍಽᨆߒߚߣߎࠈ‫ޔ‬ᵻㇱ࿾ጀ᳓ߢૐ࠙࡜ࡦ‫ޔ‬ᷓㇱ࿾ጀ᳓ߢ㜞࠙࡜ࡦߣ޿߁⚿ᨐ‫ ߮ࠃ߅ޔ‬77  ߢ޽ࠅ‫ޔ‬ᵻㇱ࿾ጀ᳓ߢ 6J7 ‫ޔ‬ᷓㇱ࿾ጀ᳓ߢ
6J7 ߣ޿߁⚿ᨐ߇ᓧࠄࠇߚ‫ ޕ‬ᐕ  ᦬‫⺞ߡߒ⛯⛮߽᦬ ޔ‬ᩏߒߚߣߎࠈ‫ޔ‬
6J7 ߣ޿߁⚿ᨐߢ޽ࠅ‫ޔ‬6J ߩㆊ೾ߪ⹺߼ࠄࠇߥ߆ߞߚ‫ߪࠄࠇߎޕ‬ᄢ᳇㐿᡼♽ߩࡏ࡯࡝ࡦࠣߢ਄ਅߩဒౝ᳓ߩ⒖േ߿ᷙวߩน⢻ᕈ߇޽ࠆߩߢ‫ࠍࡓ࠹ࠬࠪ࡯ࠞ࠶ࡄ࠴࡞ࡑޔ‬᦭ߔࠆ $T ߦ߅ߌࠆ࿾ጀ᳓ߩ⺞ᩏ߽ⴕߞߚ‫⚿ߩߘޕ‬ᨐ‫ᦨޔ‬਄ㇱߩ࿾ጀ᳓ߢ 6J7 ߣߥࠅ‫ ߿࠼ࠗࡠࠦޔ‬Ộ‛ߩน⢻ᕈ߇␜ໂߐࠇߚ‫ޕ‬࿾ጀᶐㅘ᳓߿ḝ᳓ߥߤߢߪ࠙࡜ࡦỚᐲߩᄌൻߪ޽߹ࠅᄢ߈ߊߥߊ‫ޔ‬ṁሽᘒ߇ᄙ޿߽ߩߣផቯߐࠇߚ‫ޕ‬$T ੗ᚭߩᷓᐲ O ࠙࡜ࡦỚ㓸ጀḰ ߢߩ࿾ጀ᳓ߩ☸ᓘᲤߩಽᨆ⚿ᨐߢ߽‫ࡦ࡜࠙ోޔ‬Ớᐲߪ‫ޔ‬㧔r㧕RRD ⒟ᐲ
ߣ⷗Ⓧ߽ࠄࠇ‫ߩߢ߹ࠇߎޔ‬หጀḰߩ࿾ጀ᳓ RRD ߣᲧߴ‫ޔ‬ᐞಽૐ޿߽ߩߩหߓࠝ࡯࠳࡯ߢ
޽ࠅ‫☸ޔ‬ᓘᲤߦಽ↹ߒߚ࠙࡜ࡦỚᐲ߽ Ộ‛ᘒߢߪૐߊ‫ޔ‬ᓸ⚦ߥࠦࡠࠗ࠼ᘒ߽ߒߊߪṁሽᘒߣߒߡߩỚᐲߩᣇ߇㜞޿ߣផቯߐࠇߚ‫੹ޔߪߡ޿ߟߦࠇߎޕ‬ᓟߐࠄߦᬌ⸛ߔࠆᔅⷐ߇޽ࠆ‫ޕ‬
Uranium series nuclides bound to colloids in borehole groundwater in Kanamaru area, Niigata andYamagata Prefectures
KANAI, Y., SEKI, Y. and OKUZAWA, K.
− 67 −

1P13⭉᳜㓟ࢆྵࡴᅵተ࡟࠾ࡅࡿ㔠ᒓ࢖࢜ࣥࡢ྾╔ᙧែᮾ኱㝔⥲ྜ ‫ۑ‬ఀ⸨♸⏕ࠊᑠ㇋ᕝ຾ぢࠊᯇᑿᇶஅ
࠙ࡣࡌࡵ࡟ࠚኳ↛ࡢᅵተ୰࡟ࡣከ㔞ࡢ⭉᳜㓟ࡀྵࡲࢀ࡚࠾ࡾࠊᅵተ࡟ᑐࡍࡿ㔠ᒓ࢖࢜ࣥࡢ྾
╔㔞࡟኱ࡁ࡞ᙳ㡪ࢆ୚࠼࡚࠸ࡿࠋࡑࡢࡓࡵᅵተ⎔ቃࢆṇ☜࡟ホ౯ࡍࡿ࡟ࡣ⭉᳜㓟ࡢᐤ୚ࢆ᳨ウࡍࡿࡇ࡜ࡣ㔜せ࡛࠶ࡿࡀࠊ྾╔㔞࡜྾╔ᙧែࡢ㛵ಀ࡟╔┠ࡋࡓ◊✲ࡣ࠶ࡲࡾ࡞ࡉࢀ࡚࠸࡞
࠸ࠋࡑࡇ࡛ᮏ◊✲࡛ࡣ᪥ᮏࡢᅵተ࡟ከࡃྵࡲࢀ࡚࠸ࡿ㠀ᬗ㉁⢓ᅵ㖔≀ࡢ࢔ࣟࣇ࢙ࣥࢆ⏝࠸࡚྾╔㔞࡜྾╔ᙧែࡢ㛵ಀࢆ᳨ウࡋࡓࠋ⭉᳜㓟ࢆᶵჾ୰ᛶᏊᨺᑕ໬ศᯒ࡟࠿ࡅࡓ࡜ࡇࢁࠊ㔠ᒓ࢖࡛࢜ࣥࡣ࢝ࣝࢩ࣒࢘ࡀ᭱ࡶከࡃྵࡲࢀ࡚࠸ࡓࠋࡇࡢࡇ࡜࠿ࡽ⭉᳜㓟࡜࢝ࣝࢩ࣒࢘ࡣぶ࿴ᛶࡀ㧗࠸࡜⪃࠼ࠊᮏ◊✲࡛ࡣ㔠ᒓ࢖࢜ࣥ࡜ࡋ࡚࢝ࣝࢩ࣒࢘ࢆ౑⏝ࡋࡓࠋ࠙ᐇ㦂ࠚ࢔ࣟࣇ࢙ࣥࡣ(ᰴ)ⓑᕝ〇సᡤ࡟ࡼࡾᥦ౪ࡉࢀࡓྜᡂ࢔ࣟࣇ࢙ࣥࢆ౑⏝ࡋࡓࠋ⭉᳜㓟ࡣᕷ㈍ࡢࡶࡢࢆࡉࡽ࡟⢭〇ࡋ࡚౑⏝ࡋࡓࠋ࢔ࣟࣇ࢙ࣥ 0.1 g ࡟ 510-3 mol dm-3 ሷ໬࢝ࣝࢩ࣒࢘
Ỉ⁐ᾮ 5 cm3 ࡜ pH5ࠊ7ࠊ9ࠊ11 ࡢ 20ppm ⭉᳜㓟Ỉ⁐ᾮ 5 cm3 ࢆຍ࠼ࡓࡶࡢࢆㄪ〇ࡋࠊ24 ᫬㛫᣺࡜࠺ࡋࡓࠋࡇࡢ᫬ࠊࢥࣥࢺ࣮ࣟࣝ࡜ࡋ࡚⭉᳜㓟ࢆྵࡲ࡞࠸⁐ᾮ࡛ࡶྠᵝࡢ᧯సࢆ⾜ࡗࡓࠋ᣺࡜࠺ᚋࠊ⁐ᾮࢆࢁ㐣ࡋࠊ࢝ࣝࢩ࣒࢘⃰ᗘࢆ ᐃࡋ࡚཯ᛂ๓ᚋࡢ⃰ᗘࡢᕪ࠿ࡽ࢝ࣝࢩ࣒࢘ࡢ
྾╔㔞ࢆồࡵࡓࠋࡲࡓࠊ྾╔ヨᩱࡢ࢝ࣝࢩ࣒࢘ࡢ K ྾཰➃ EXAFS ࢫ࣌ࢡࢺࣝࡢ ᐃࢆ㧗࢚ࢿࣝࢠ࣮ຍ㏿ჾ◊✲ᶵᵓ Photon Factory ࡢ BL-9A ࡟࠾࠸࡚⺯ගἲ࡟ࡼࡾ⾜ࡗࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ࢔ࣟࣇ࢙ࣥࡢ IR ࢫ࣌ࢡࢺࣝࢆ ᐃࡋࡓ࡜ࡇ
ࢁࠊࣄࢻࣟ࢟ࢩࣝᇶࢆ☜ㄆࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋࡑࡢࡓࡵࠊ
䠖⭉᳜㓟䛺䛧
࢝ࣝࢩ࣒࢘࢖࢜ࣥࡢ྾╔཯ᛂࡣ௨ୗࡢᘧ࡛⾲ࡍࡇ࡜࡛ࡁࡿࠋ
䠖⭉᳜㓟
2++
2Allophane-OH + Ca я 2Allophane-OCa + 2Hᅗ㸯ࡣ཯ᛂ㛤ጞ᫬ࡢ pH ࢆᶓ㍈࡜ࡋࠊ࢔ࣟࣇ࢙ࣥ࡬ࡢ࢝ࣝࢩ
࣒࢘ࡢ྾╔㔞ࢆᲬࢢࣛࣇࠊ཯ᛂᚋࡢ pH ࢆᢡࢀ⥺ࢢࣛࣇ࡛⾲ࡋࡓࡶࡢ࡛࠶ࡿࠋୖᘧࡼࡾ pH ࡀ㧗࠸࡯࡝྾╔㔞ࡀቑຍࡍࡿ
࡜⪃࠼ࡽࢀࠊᐇ㝿࡟ pH ࡀ㧗࠸࡯࡝྾╔㔞ࡀከࡃ࡞ࡿഴྥࡀ
ぢࡽࢀࡓࠋ⭉᳜㓟ࢆྵࡴ⣔࡜ྵࡲ࡞࠸⣔࡛཯ᛂᚋࡢ pH ࡟ᕪ཯ᛂ๓䛾ࡀ⏕ࡌࡓࡢࡣ⭉᳜㓟ࡢ㓟୰࿴⬟ࡀാ࠸࡚ pH ࢆపୗࡉࡏ࡟
ᅗ 1. ྾╔㔞࡜ pH ࡢ㛵ಀ㸦Წࢢࣛࣇࡀ྾╔㔞ࠊᢡࢀ⥺ࢢࣛࣇࡀࡃࡃࡋࡓࡓࡵ࡛࠶ࡾࠊpH11 ࡟࠾࠸࡚྾╔㔞ࠊ཯ᛂᚋࡢ pH཯ᛂᚋࡢ pH ࢆ⾲ࡍ㸧ࡀ࡯ࡰྠࡌ࡟࡞ࡗࡓࡢࡣ࢔ࣟࣇ࢙ࣥࡢ྾╔㝈⏺࡟㐩ࡋࡓࡓࡵࡔ࡜⪃࠼ࡽࢀࡿࠋ
pH9 ࡟࠾࠸࡚⭉᳜㓟ࢆྵࡴ⣔࡜ྵࡲ࡞࠸⣔࡛྾╔㔞࡟኱⭉᳜ࡁ࡞ᕪࡀ⏕ࡌࡓࠋIR ࢫ࣌ࢡࢺࣝ࠿ࡽ⭉᳜㓟ࡶࣄࢻࣟ࢟ࢩࣝ
㓟ᇶࢆᣢࡘࡇ࡜ࡀ☜ㄆ࡛ࡁࠊࡇࡢࣄࢻࣟ࢟ࢩࣝᇶࡣሷᇶᛶ᮲
௳ୗ࡟࠾࠸࡚Ỉ⣲࢖࢜ࣥࢆゎ㞳ࡍࡿࠋࡑࡢࡓࡵሷᇶᛶ᮲௳
ୗ࡛ࡣ࢔ࣟࣇ࢙ࣥࠊ⭉᳜㓟ࡣ㈇࡟ᖏ㟁ࡍࡿࠋࡇࡢ᫬ࠊṇ㟁Ⲵࢆᣢࡘ࢝ࣝࢩ࣒࢘࢖࢜ࣥࡀᏑᅾࡍࡿ࡜ᅗ 2 ࡢࣔࢹࣝࡢࡼ
࠺࡟࢝ࣝࢩ࣒࢘࢖࢜ࣥࡀ࢔ࣟࣇ࢙ࣥ࡜⭉᳜㓟࡟ᣳࡲࢀࡿᵓ
㐀ࢆ࡜ࡾࠊ྾╔ࢆ⿵ຓࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋࡇࡢࡇ࡜ࢆ
⿬௜ࡅࡿࡓࡵ࡟⭉᳜㓟ࢆྵࡴ᮲௳࡜ྵࡲ࡞࠸᮲௳࡛ ᐃࡋ
ᅗ 2. ྾╔ࣔࢹࣝ㸦ୖ㸸⭉᳜㓟࠶ࡾࠊୗ㸸⭉᳜㓟࡞ࡋ㸧ࡓ XAFS ࢫ࣌ࢡࢺࣝࡢゎᯒࢆ㐍ࡵ࡚࠸ࡿࠋ
























Adsorption structure of metal ion on soil including humic acid
ITOU,Y., SHOZUGAWA,K., MATSUO,M.
− 68 −

཯ᛂᚋ䛾䜹䝹䝅䜴䝮䛾྾╔㔞 Ͳ− 69 −

1P15

ᴟపࣞ࣋ࣝᨺᑕ⬟ᐃ࡟ࡼࡿᪧࢯ㐃ᆅୗ᰾ᐇ㦂ሙᅵተ୰ࡢ 208Bi

ᐃࡢヨࡳឡ▱་኱࣭་ 㸪㔠ἑ኱࣭LLRL㸪㜰኱࣭RI ࢭࣥࢱ࣮
‫ۑ‬ᑠᓥ㈆⏨ 㸪᭷ಙဴဢ 㸪ᑠ㡲⏣ㄋ 㸪℈ᓥ㟹඾ 㸪ᒣᮏᨻ൤ 㸪ᩪ⸨┤ 

208

1632 keV
Bi-SUM

Channel

2614 keV
208
Tl

1461 keV
40
K2614 keV
208
Bi+208Tl

207

2339 keV
Bi-SUM

207

1770 keV
207
Bi

569 keV
644 keV 207
Bi
207
Bi-SUM
1063 keV
207
Bi

511 keVCounts per channel

Counts per channel࠙ࡣࡌࡵ࡟ࠚᪧࢯ㐃ࢭ࣑ࣃࣛࢳࣥࢫࢡ᰾ᐇ㦂ሙ࡛᥇ྲྀࡋࡓᅵተヨᩱ࠿ࡽ᰾ศ⿣⏕ᡂ≀࡛࠶ࡿ
137
Cs㸪࠾ࡼࡧ㸪୰ᛶᏊㄏᑟᨺᑕᛶ᰾✀࡛࠶ࡿ 60Co㸪108mAg㸪152,154Eu ࡀ᳨ฟࡉࢀ࡚࠸ࡿࠋࡲࡓ㸪Bi ࢟ࣕࣜ࢔ࢆຍ࠼ࡓᅵተヨᩱ࠿ࡽ⁐፹ᢳฟἲ㸪࢖࢜ࣥ஺᥮ἲ࡞࡝ࡢ໬Ꮫศ㞳᧯స࡟ࡼࡾ⢭〇࣭༢㞳ࡋࡓ Bi ヨᩱ࠿ࡽ 207Bi ࡀ᳨ฟࡉࢀ࡚࠸ࡿ(ᑠᓥ 2007)ࡀ㸪ࡑࡢ⏕ᡂ᰾཯ᛂࡣ᫂ࡽ࠿࡟
࡞ࡗ࡚࠸࡞࠸ࠋ207Bi ࡜ྠᵝ࡟⏕ᡂࡉࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ 208Bi㸦EC ቯኚ㸪༙ῶᮇ㸸3.68105ᖺ㸪ᨺฟȚ⥺㸸2615 keV㸪100㸣㸧ࢆ ᐃࡋ㸪208Bi/207Bi ẚࢆᚓࢀࡤ㸪ࡑࡢ⏕ᡂ᰾཯ᛂࢆ᫂ࡽ
࠿࡟࡛ࡁࡿࡇ࡜ࡀᮇᚅࡉࢀࡿࠋࡋ࠿ࡋ࡞ࡀࡽ㸪208Bi ࡢᨺฟȚ⥺࢚ࢿࣝࢠ࣮ࡣ Th ⣔ิࡢ 208Tl
ࡢᨺฟȚ⥺࡜ྠࡌ࡛࠶ࡾ㸪㏻ᖖࡢ ᐃ࡛ࡣࡑࡢ᳨ฟࡣᅔ㞴࡛࠶ࡿࠋᮏ◊✲࡛ࡣ㸪㔠ἑ኱ LLRL
ࡢᴟపࣞ࣋ࣝࣂࢵࢡࢢࣛ࢘ࣥࢻᨺᑕ⬟ ᐃ᪋タ࡛᰾ᐇ㦂⏤᮶ࡢ 208Bi ࡢ ᐃࢆヨࡳࡓࠋ࠙ᐇ㦂ࠚ1994 ᖺ 10 ᭶࡟ࢭ࣑ࣃࣛࢳࣥࢫࢡ᰾ᐇ㦂ሙ࠿ࡽ᥇ྲྀࡉࢀࡓᅵተヨᩱ㸦Bolapan-1+2,<1mm㸧 3.51g ࡟ Ni 㸪 Sr 㸪 Ag㸪 Ba 㸪 Pb㸪 Bi ࢟ ࣕ ࣜ࢔ ࢆ ྛࠎ 㸯㹼 3mg ࢆ ῧ ຍ ࡋ 㸪ΰ 㓟
㸦HF+HNO3+H2SO4㸧ࢆຍ࠼㸪㓟ศゎࢆ⾜ࡗࡓࠋࢁ⣬࡟ࡼࡿࢁ㐣ࢆ⾜࠸㸪ࢁᾮ࡟ HCl ࢆຍ࠼㸪ỿẊ࡜࡞ࡗࡓ Ag㸪Pb ࢆ㝖ࡁ㸪ࢁᾮ࡟ NaOH Ỉ⁐ᾮࢆຍ࠼㸪pH ࢆ⣙ 8 ࡜ࡋ࡚ Bi ࢆྵࡴỿẊࢆ㐲ᚰศ㞳࡟ࡼࡾ㸪࢔ࣝ࢝ࣜ㔠ᒓඖ⣲(137Cs ࡞࡝)㸪࢔ࣝ࢝ࣜᅵ㢮㔠ᒓ࡞࡝࠿ࡽศ㞳ࡋࡓࠋ⃰HCl ࢆຍ࠼࡚ỿẊࢆ⁐ゎࡋ㸪8M NaOH Ỉ⁐ᾮࢆ Al(OH)3 ࡀ⁐ゎࡍࡿࡲ࡛ຍ࠼㸪㐲ᚰศ㞳ࢆ⾜ࡗࡓࠋBi ࢆྵࡴỿẊࢆ HCl ࢆຍ࠼⁐ゎࡋ㸪6M HCl ᛶ⁐ᾮ࡜ࡋ㸪4-࣓ࢳࣝ-2-࣌ࣥࢱࣀࣥࢆຍ
࠼㸪⁐፹ᢳฟࢆ⾜࠸㸪Fe ࢆ㝖ཤࡋࡓࠋỈ┦ࢆ⵨Ⓨ஝ᅛࡋ㸪HCl ࡟⁐ゎࡋ㸪1M HCl ᛶ࡜ࡋ࡚㝧࢖࢜ࣥ஺᥮࣒࢝ࣛ࡟㏻ࡋࡓࠋBi ࣇࣛࢡࢩ࡛ࣙࣥ࠶ࡿ⁐ฟᾮࢆࣉࣛࢫࢳࢵࢡヨ㦂⟶࡟㞟ࡵ㸪⵨Ⓨ஝ᅛࡋ㸪208Bi ᐃ⏝ヨᩱ࡜ࡋࡓࠋࡲࡓ㸪Bi ࢟ࣕࣜ࢔ࢆ⵨Ⓨ஝ᅛࡋࡓヨᩱࢆࣈࣛࣥࢡヨᩱ࡜ࡋࡓࠋࡇࢀࡽࢆ㔠ἑ኱ LLRL ࡢᴟపࣞ࣋ࣝࣂࢵࢡࢢࣛ࢘ࣥࢻᨺᑕ⬟ ᐃ᪋タࡢ஭ᡞᆺ Ge ᳨ฟჾ࡟ࡼࡾȚ⥺ ᐃࢆ⾜ࡗࡓࠋEnergy/ keV
0
1000
2000
3000
207
࠙⤖ᯝ࠾ࡼࡧ⪃ᐹࠚ໬Ꮫศ㞳๓ᚋࡢ Bi ࡢ ᐃ್࠿ࡽ㸪Bi ࡢ໬ᏛBi཰⋡ࡣ 44㸣࡛࠶ࡗࡓࠋLLRL ࡛ࡢ 208Bi ヨᩱ(492,992 ⛊ ᐃ)࠾ࡼࡧ 10000
Blank ヨᩱ(295,361 ⛊ ᐃ)ࡢ ᐃ⤖ᯝࢆྑᅗ࡟♧ࡍࠋ208Bi ヨᩱ࡛
1000
ࡣ 207Bi ࡢࣆ࣮ࢡ࡜ࡑࡢࢧ࣒ࣆ࣮ࢡࡀ㢧ⴭ࡟᳨ฟࡉࢀ㸪ࡲࡓ㸪208Bi
100
࠾ࡼࡧࣂࢵࢡࢢࣛ࢘ࣥࢻࡢ 208Tl ࠿ࡽ࡜⪃࠼ࡽࢀࡿ 2615 keV ࡢ࢚
10ࢿࣝࢠ࣮㡿ᇦ࡛ࡣ㸪(6.11.1)10-5 cps ࡢࣆ࣮ࢡࡀ᳨ฟࡉࢀࡓࠋ୍
208-5
᪉㸪Blank ヨᩱࡢ ᐃ࡛ࡣ㸪 Tl ࠿ࡽࡢ(3.41.1)10 cps ࡢࣆ࣮
1ࢡࡀ᳨ฟࡉࢀࡓࠋࡇࡇ࡛㸪㝧࢖࢜ࣥ஺᥮ศ㞳ࡢ㐣⛬࡛ 152Eu(1408.0
0
1000
2000
3000
4000
ChannelkeV, 20.8%)㸪154Eu(1274.5 keV, 35.5%)ࡀ Bi ࣇࣛࢡࢩࣙࣥ࠿ࡽ᏶඲
Energy/ keV
0
1000
2000
3000
࡟㝖ཤࡉࢀ࡚࠸ࡿࡇ࡜࠿ࡽ,ྠᵝࡢᣲືࢆࡍࡿ Th ࡶ᏶඲࡟㝖ཤࡉ
1000ࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋࡋࡓࡀࡗ࡚㸪208Bi ⏤᮶ࡢȚ⥺ࡣ(2.71.5)
Blank
100
-5
10 cps ࡜ࡳ࡞ࡍࡇ࡜ࡀ࡛ࡁࡿࠋ⌧ᅾ㸪᭦࡞ࡿ ᐃࢆ⾜࠺࡜࡜ࡶ࡟㸪208Bi ࡢ᳨ฟຠ⋡ࡢ᳨ウࢆ⾜ࡗ࡚࠾ࡾ㸪Ⓨ⾲ᙜ᪥࡟ࡣ㸪208Bi ࡢ
10ᐃ㔞್࡟ᇶ࡙ࡃ⪃ᐹࢆ⾜࠺ணᐃ࡛࠶ࡿࠋ
1࠙ᩥ⊩ࠚᑠᓥ ௚㸪➨ 51 ᅇᨺᑕ໬Ꮫウㄽ఍せ᪨㞟 3B05, 104(2007)
0
1000
2000
3000
4000
Extremely low background measurement of Bi in the soil of the Semipalatinsk nuclear test site in
the former USSR.
KOJIMA, S., ARINOBU, T., KOSUDA, C., HAMAJIMA, Y., YAMAMOTO, M., SAITO, T.
− 70 −

1P16

 ࡜  ࡢ஧㓟໬࣐ࣥ࢞ࣥ࡬ࡢඹỿᣲື
㔠ἑ኱㝔⮬↛ ࠊ㔠ἑ኱⌮ᕤ ‫ۑ‬᪥༡᐀୍㑻 ࠊ୰す Ꮥ࠙ࡣࡌࡵ࡟ࠚ Ỉヨᩱ୰ࡢࢆᐃ㔞ࡍࡿ㝿ࡢ⃰㞟ἲ࡜ࡋ࡚ ඹỿἲࡀࡼࡃ⏝࠸ࡽࢀࡿࠋ
࡜ࡀྠࡌ㸰᪘ࡢ࢔ࣝ࢝ࣜᅵ㢮ඖ⣲࡛࠶ࡾࠊ໬Ꮫⓗᣲືࡀఝ࡚࠸ࡿ࠿ࡽ࡛࠶ࡿࠋࡋ࠿ࡋ໬
Ꮫⓗᛶ㉁ࡀఝ࡚࠸ࡿࡀᨾ࡟ࠊከࡃࡢヨ⸆୰࡟ࡀྵࡲࢀ࡚࠸ࡿࠋࡑࡢ⤖ᯝࠊ ඹỿἲࢆ⏝࠸࡚ࢆᐃ㔞ࡍࡿ㝿࡟ࡣࠊヨ⸆ࡢࣈࣛࣥࢡ್ࢆᕪࡋᘬࡃᚲせࡀ࠶ࡿࠋࡋ࠿ࡋࣈࣛࣥࢡ
್ࡀỈヨᩱ୰ࡢࡢ㔞࡜ྠ⛬ᗘ࠶ࡿ࠸ࡣࡑࢀ௨ୖ࡛࠶ࡿሙྜࠊᐃ㔞࡟ᨭ㞀ࢆࡁࡓࡍࠋࡑࡇ
࡛Ỉヨᩱ୰ࡢᚤ㔞ࡢࢆ⃰㞟ࡍࡿ㝿࡟ࠊヨ⸆ࡢ㔞ࢆไ㝈ࡋ࡚㖄ヨ⸆ࢆ⿵ຓඹỿ๣࡜ࡋ࡚ే
⏝ࡋࡓࡾࡋ࡚࠸ࡿࠋࡋ࠿ࡋࠊヨ⸆࠿ࡽࢆศ㞳㝖ཤ࡛ࡁࢀࡤࠊࡢ᳨ฟୗ㝈ࢆୗࡆࡿࡇ࡜
ࡀ࡛ࡁࠊ⃰㞟ࡢ㝿ࡢヨ⸆౑⏝㔞ࡢไ㝈ࡸ㖄ヨ⸆ࡢే⏝ࡶ୙ᚲせ࡜࡞ࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣ  ヨ⸆࠿ࡽࡢ⡆౽࣭㎿㏿࡞  㝖ཤἲࡢ㛤Ⓨࢆ┠ᣦࡋ࡚ࠊࡲࡎ஧㓟໬࣐ࣥ࢞ࣥඹỿἲ࡟ࡼࡿ  ࡜  ࡢศ㞳࡟ࡘ࠸᳨࡚ウࡋࡓࠋ࠙ᐇ 㦂ࠚ ձ ༙ῶᮇ

 "ࠊ ࠿ࡽศ㞳 ࢺ࣮ࣞࢧ࣮  ◪㓟⁐ᾮ -) )ࠊղᏳᐃྠ఩యࢆྵࡴ ༙ῶᮇ   4ࠊヨ⸆࡬ࡢไືᨺᑕ⥺↷ᑕ࡛〇㐀 ࢺ࣮ࣞࢧ࣮  ◪㓟⁐ᾮ-)㸪  ) )ࠊճ⵨␃Ỉ )ࠊմ*( Ỉ⁐ᾮ  )* )ࢆ)㐲ỿ⟶࡟࡜ࡗ࡚ΰྜࡋࡓࠋࡇࡢΰྜ⁐ᾮࢆ ୅ࡢ࢛࣮࢘ࢱ࣮ࣂࢫ࡛  ศ㛫ຍᚋࠊ* Ỉ⁐ᾮ5  )*ࢆ )ຍ࠼ࠊ ))ࡢ᣺࡜࠺ᖜ࣭ .,)࡛

᫬㛫ΰྜ⁐ᾮ࡜

⏕ᡂࡍࡿ* ࢆ᣺ࡾΰࡐࡓࠋࡑࡢᚋࠊ㐲ᚰศ㞳࡛* ỿẊ࡜ୖ⃈ࡳࢆศ㞳ࡋࠊୖ⃈ࡳࢆ6#༙ᑟయ᳨ฟჾ࡛

ᐃࡋࡓ ࡜ ࡢȖ⥺ࢆࡢ㔞ࢆඹỿ⣔࡟ῧຍࡋࡓ

࡜ᐃࠋ* ඹỿᚋࡢୖ⃈ࡳᾮ୰ࡢ ࡜ ࡢ㔞࡜ẚ㍑

ࡋࠊ* ࡬ࡢ࡜ࡢඹỿศ㓄ẚ࡜ඹỿ⋡ࢆホ౯ࡋࡓࠋࡲࡓࠊࡇࡢ* ඹỿ⣔࡟⾲㸯 ࡜ࡢ* ඹỿศ㓄ẚ    
࡞ࡋ

࠶ࡾ

D

 



D





࣊࢟ࢧ࢜࢟ࢧࢩࢡࣟ࢜ࢡࢱࢹ࢝ࣥ .+2*ࠊ ࡜␎ࢆඹᏑࡉࡏࡿሙྜ࡟ࡘ࠸࡚ࡶ᳨ウࡋࡓ㸦ճ⵨␃Ỉ )ࡢ௦ࢃࡾ࡟ ࡢỈ⁐ᾮ 5) ࢆ )ῧຍࡋࡓ㸧ࠋ࠙⤖ ᯝࠚ * ඹỿ⣔࡟Ꮡᅾࡍࡿ࡜ࡢཎ
Ꮚᩘẚࡣ࠾ࡼࡑ 㸸㸦*㸸 ࡣ ⣙㸸 㸧ࡀඃඛⓗ࡟* ࡟ඹỿࡍࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡲࡓࠊ  ࡀᏑᅾࡍࡿሙ
ྜࡢ࡜ࡑࢀࡒࢀࡢ* ࡬ࡢඹỿ⋡ࡣ୧᪉࡜ࡶ  ࡀᏑᅾࡋ࡞࠸ሙྜࡼࡾࡶୖ᪼ࡋࠊ࡜

ඹỿ⋡㻔㻑㻕

࡛࠶ࡿ࡟ࡶ࠿࠿ࢃࡽࡎ

㻝㻜㻜
㻥㻜
㻤㻜
㻣㻜
㻢㻜
㻡㻜
㻠㻜
㻟㻜
㻞㻜
㻝㻜
㻜

㻾㼍

㻾㼍

㻮㼍
㻮㼍

㻝㻤㻯㻢㻌䛺䛧

ࡢศ㞳ಀᩘࡶྥୖࡋࡓࠋ

㻝㻤㻯㻢㻌䛒䜚

ᅗ㸯 ࡜ࡢ * ࡬ࡢඹỿ⋡&#!+,.#!','00'+* #&1'+.+$*"2'0&)*%*#/#"'+3'"#
− 71 −

1P17

ᣣᧄᶏ‫࠽ࠪ᧲ޔ‬ᶏ‫ࠢ࠷࡯ࡎࠝޔ‬ᶏߩ⴫ጀᶏ᳓ߦ߅ߌࠆ 228Th Ớᐲߣ 228Ra/226Ra
᡼኿⢻Ყߩ᳓ᐔಽᏓ
㊄ᴛᄢ ..4.‫ޔ‬ਛᄩ᳓⎇ ‫ߟ߻ޔ‬ᶏᵗ⎇ⓥᚲ ‫ޔ‬ේሶജᯏ᭴ ‫⷏ޔ‬ᶏ᳓⎇ ‫᧲ޔ‬ㄘ
ᄢ 6 ٤ศ↰࿻૓ ‫ޔ‬੗਄⌬ᄦ ‫⊝ޔ‬Ꮉ᣽ᐘ ‫ޔ‬ਛ㊁૓੺ ‫ޔ‬ዊ⮮ਭᲞ ‫ޔ‬ਸဈ㊀ཅ‫ޔ‬ᷡᧄኈሶ ‫ޔ‬Ⴎᧄ᣿ᒄ 6‫ޔ‬ᵿፉ㕏ౖ ‫ޔ‬ጊᧄ᡽⟵  ᣣᧄᶏߪ‫ޔ‬ᶏ᳓ߩ಴౉ࠅญ߇ᵻߊ‫ޔ‬Ḱ㐽㎮♽ᶏၞߢ޽ࠆ‫ޕ‬ᣣᧄᶏ๟ㄝ⻉࿖߆ࠄߩᳪᨴ‛⾰ャㅍ╬ߩⷰὐ߆ࠄ⴫ጀᶏ᳓ߩ᳓ᐔᣇะߩᓴⅣࠍ⸃᣿ߔࠆߎߣ߇ᒝߊᦸ߹ࠇࠆ৻ᣇ‫ޔ‬ਥߦኻ㚍ᶏᵹ‫ࡦࡑ࡝ߪߦࠄߐޔ‬ᶏᵹߥߤ߇ⶄ㔀ߦ⛊ߺว޿‫ߩߘޔ‬ᓴⅣߪ㕖Ᏹߦⶄ㔀ߢ޽ࠆ‫߁ࠃߩߎޕ‬ߥ․ᓽࠍ߽ߟᣣᧄᶏ⴫ጀᶏ᳓ߩᶏ᳓ᓴⅣࠍ⸃᣿ߔࠆߎߣߪ࿎㔍ߢ޽ࠆ‫ޕ‬ᶏ᳓ਛߦᭂᓸ㊂ߦሽ࿷ߔࠆ᡼኿ᕈᩭ⒳ߪ‫ߥ߹ߑ߹ߐޔ‬ඨᷫᦼߣ⇣ߥࠆ࿾⃿ൻቇ⊛᜼േࠍᜬߟߚ߼‫⾰‛ޔ‬ᓴⅣࠍត
ࠆߚ߼ߩᒝജߥ࠻࡟࡯ࠨ࡯ߣߥࠆ‫ߒ߆ߒޕ‬ㅢᏱߩǫ✢᷹ቯߦߪᄙ㊂ߩᶏ᳓ (200-1000 L) ߣⶄ㔀ߥൻቇಣℂ߇ᔅⷐߢᄙᄢߥഭജࠍᔅⷐߣߔࠆ‫ᧄޕ‬ታ㛎ᣉ⸳߇ᦨㄭ⏕┙ߒߚᭂૐࡃ࠶ࠢࠣ࡜
࠙ࡦ࠼ǫ ✢᷹ቯᴺߩㅴᱠ߅ࠃ߮ൻቇಣℂᴺߩ⏕┙ߦࠃࠅ‫ޔ‬ዋ㊂ (20 L) ߩ⴫ጀᶏ᳓ߢ 228Th‫ޔ‬
228

Ra ߅ࠃ߮ 226Ra Ớᐲߩ᷹ቯ߇น⢻ߣߥߞߚ‫ࠅࠃߦࠇߎޕ‬ᄙߊߩ࿾ὐߢߩࠨࡦࡊ࡝ࡦࠣ߇น

⢻ߣߥࠅ‫ࠅࠃޔ‬ᄙߊߩ࠺࡯࠲ࠍᓧࠆߎߣ߇ߢ߈ࠆࠃ߁ߦߥߞߚ‫ޕ‬
 2005 ᐕ㨪2009 ᐕߩೋᄐ (6 ᦬㨪8 ᦬) ߦ‫ޔ‬ᣣᧄᶏ‫࠽ࠪ᧲ޔ‬ᶏ‫ࠢ࠷࡯ࡎࠝޔ‬ᶏ (⸘ 25 ࿾ὐ) ߢ⴫ጀᶏ᳓ࠍ 20 L ណขߒߚ (Fig. 1)‫ޕ‬ߎࠇࠄᶏ᳓⹜ᢱߦૐࡃ࠶ࠢࠣ࡜࠙ࡦ࠼ǫ✢᷹ቯࠍㆡ↪ߒ‫ޔ‬
228Th‫ޔ‬228Ra‫ޔ‬226Ra Ớᐲࠍ᷹ቯߒߚ‫ޕ‬

228

Th ߪ 228Ra ߩᆷᩭ⒳ߢ޽ࠅ‫ޔ‬Raห૏૕߇৻⥸⊛ߦṁሽᕈߢ޽ࠆߩ
ߦኻߒߡ‫ޔ‬Th ห૏૕ߪ☸ሶ෻ᔕᕈ߇㜞ߊ‫ޔ‬ᶏ᳓ਛߩ☸ሶ‛⾰ᓴⅣߩ࠻࡟࡯ࠨ࡯ߣߥࠅ߁ࠆ‫⎇ᧄޕ‬ⓥߩ⚿ᨐ‫ޔ‬ᣣᧄᶏධㇱᶏၞ (ኻ㚍ᶏ⋆‫ޔ‬ᄢ๺ᶏ⋆‫ᧄޔ‬Ꮊᴪጯ) ߢߪ‫ޔ‬ർㇱ (ᄢ๺ၸ‫ޔ‬ᣣᧄᶏ⋆‫ޔ‬ർᶏ㆏ᴪጯ) ߦᲧߴ‫ޔ‬
228

Th Ớᐲ߇ૐ޿ߣ޿߁௑ะ߇ߺࠄ

ࠇߚ‫ᧄޕ‬ᐕળߢߪ‫ޔ‬228Th ߩ᳓ᐔಽᏓ‫ޔ‬ߐࠄߦߪ 228Ra/226Ra ᡼኿⢻ᲧߣߩᲧセߦࠃࠅ‫ޔ‬ᣣᧄᶏߣߘߩ๟ㄝᶏၞߦ
߅ߌࠆ☸ሶ‛⾰ᓴⅣߦ㑐ߔࠆ⼏⺰ࠍⴕ߁੍ቯߢ޽ࠆ‫ޕ‬

Fig.1 Locations of sampling sites for seawater

Lateral distributions of 228Th activity and 228Ra/226Ra activity ratio of surface water within the Sea ofJapan, the East China Sea, and the Sea of Okhotsk.
Yoshida, K., Inoue, M., Minakawa, M., Nakano, Y., Kofuji, H., Otosaka, S., Kiyomoto, Y., Shiomoto,A., Hamajima, Y., Yamamoto, M.

− 72 −

1P18

ᮾ㒊ኴᖹὒ࡟࠾ࡅࡿ 3X ⃰ᗘศᕸ㔠ἑ኱㝔⮬↛  㸪⟃Ἴ኱ຍ㏿ჾ  㸪㔠ἑ኱⌮ᕤ  ‫℧ۑ‬ᮏΎ㈗  㸪㝮 ㈗ᘯ  㸪ᮌୗဴ୍  㸪୰す Ꮥ ሁ✚≀ᰕ䛾Pu-239,240 䚷mBq
/
cm

-2

࠙ࡣࡌࡵ࡟ࠚ ኱Ẽᅪෆ᰾ᐇ㦂㸦1945㹼1980 ᖺ㸧࡟ࡼࡗ࡚ேᕤᨺᑕᛶ᰾✀Pu-239,240㸦T 1/2
㸻2.41×10 4 y㸪6.56×10 3 y㸧ࡀ⎔ቃ࡟ᨺฟࡉࢀࡓࠋPuࡣ㦵ぶ࿴ᛶඖ⣲࡛࠶ࡿࡓࡵேయ࡟
ྲྀࡾ㎸ࡲࢀࡿ࡜᤼ἥࡉࢀ࡟ࡃ࠸ୖ࡟㸪Puࡢ㛗༙ῶᮇྠ఩యࡣȘᨺᑕయ࡛࠶ࡿࡓࡵ㧗࠸ᨺᑕᛶẘࡀ࠶ࡾ㸪⎔ቃPuࡢ㔞࣭⃰ᗘཬࡧᣲື࡟㛵ࡍࡿ▱ぢࡢ⵳✚ࡣ㔜せ࡛࠶ࡿࠋ኱Ẽᅪෆ᰾ᐇ㦂࡟ࡼࡗ࡚ᨺฟࡉࢀࡓࣇ࢛࣮ࣝ࢔࢘ࢺPuࡢከࡃࡀᾏὒ࡟ࡶࡓࡽࡉࢀࡓࡀ㸪ศᕸ࡟ᾏᇦᕪࡀ࠶ࡿࡇ࡜ࡀศ࠿ࡗ࡚ࡁ࡚࠸ࡿࠋࡋ࠿ࡋ㸪ᮾ㒊ኴᖹὒࡣPuࢹ࣮ࢱࡀஈࡋ࠸
ᾏᇦ࡛࠶ࡾ㸪Pu⃰ᗘศᕸ➼ࡢࢹ࣮ࢱࢆ඘ᐇࡉࡏࡿࡇ࡜ࡀồࡵࡽࢀ࡚࠸ࡿࠋ࠙ᐇ 㦂ࠚ ᮾ኱ᾏὒ◊ ⓑ㬅୸ࡢKH-03-1 ḟ◊✲⯟ᾏ㸦ᮾ㒊ኴᖹὒ㸧࡟࠾࠸࡚᥇ྲྀࡉ
ࢀࡓᾏỈヨᩱ(10 Ⅼ)࡜ሁ✚≀ヨᩱ(5 Ⅼ)࡟ࡘ࠸࡚Puศᯒࢆ⾜ࡗࡓࠋᾏỈヨᩱ㸦1 ヨᩱ㸸㹼250 L㸧ࡣ㸪⯪ୖ࡛ 242 Pu㸦3.7510 5 y㸧཰⋡ࢺ࣮ࣞࢧ࣮࡜㕲 Ϫ ᢸయࡢῧຍ࠾ࡼ
ࡧ㕲ඹỿ࡟ࡼࡿPuணഛ⃰㞟ฎ⌮ࡀ⾜ࢃࢀࡓࠋᣢࡕᖐࡽࢀࡓ㕲ඹỿヨᩱࡢ 8 mol L -1 ሷ㓟⁐ᾮ࠿ࡽࡢࢪ࢖ࢯࣉࣟࣆ࢚࣮ࣝࢸࣝ࡟ࡼࡿ኱㒊ศࡢ㕲ࡢᢳฟ㝖ཤ㸪PuࡢỈ㓟໬≀ඹỿࡢᚋ㸪Ỉ㓟໬≀ỿẊࢆ◪㓟ࡲࡓࡣሷ㓟࡟⁐ゎࡋ࡚ள◪㓟ࢼࢺ࣒࡛ࣜ࢘Puࢆϫ౯࡟ㄪᩚࡋࡓࠋ◪㓟⣔ཬࡧሷ㓟⣔࡛㝜࢖࢜ࣥ஺᥮ᶞ⬡࣒࢝ࣛἲ࡟ࡼࡾPuࢆศ㞳࣭⢭〇ࡋࡓࠋ⢭〇ࡉࢀࡓPuࢆࢫࢸࣥࣞࢫᯈୖ࡟㟁╔ࡋ㸪Si༙ᑟయ᳨ฟჾࢆ⏝࠸࡚Ș⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ
࣮ࣜࢆ⾜࠸㸪Puྠ఩యࢆᐃ㔞ࡋࡓࠋ㢼஝ሁ✚≀ヨᩱࡣῶᅽ஝⇱ࡋ࡚⛗㔞ࡋ㸪཰⋡ࢺ࣮ࣞࢧ࣮ 242 Puࢆ᪤▱㔞ῧຍࡋࡓᚋ㸪࢔ࣝ࢝ࣜ⁐⼥ࢆ⾜ࡗࡓࠋ⼥ゎ≀ࢆ⵨␃Ỉ࡛ࢽࢵࢣࣝࡿࡘࡰ࠿ࡽฟࡋ㸪◲㓟㕲 ϩ ࢔ࣥࣔࢽ࣒࢘ࢆῧຍࡋ࡚Puࢆప㓟໬≧ែ࡟ಖࡕ࡞ࡀࡽỈ㓟໬≀ỿẊ࡬ࡢPuඹỿ⋡ࢆྥୖࡉࡏࡓࠋỈ㓟໬≀ỿẊࢆ㐲ᚰศ㞳ࡋࡓᚋ㸪⃰ሷ㓟࡟⁐ゎࡋ㸪ᯒฟࡋࡓࢮࣛࢳࣥ≧ࡢࢣ࢖㓟ࢆ㝖ཤࡋࡓࠋࡑࡢᚋPuࡢ㕲ඹỿࢆ⾜࠸㸪ࡉࡽ࡟ᾏỈヨᩱ࡜ྠᵝࡢ᧯సࢆ⾜ࡗࡓࠋ࠙⤖ ᯝࠚ ᾏỈᰕࡢPu-239,240 ῝ᗘศᕸࡣ㸪⾲ᒙ࡛పࡃ㸪500㹼800m࡟⃰ᗘᴟ኱ࡀ࠶
ࡾ㸪୰ᒙ࡛ప⃰ᗘ࡜࡞ࡗࡓᚋ㸪ᾏᗏ௜㏆࡛⃰ᗘࡀ㧗ࡃ࡞ࡿ࡜࠸࠺௚ࡢᾏᇦ࡜ྠᵝࡢ≉ᚩࢆ♧ࡋࡓࠋࡲࡓ㸪ᾏỈᰕࡢ
1.4
Pu-239,240 ⵳✚㔞ࡣ 0.8㹼5.1 Bq/cm 2࡛࠶ࡗࡓࠋ୍᪉㸪ሁ✚≀ᰕࡢ
1.2
2
Pu-239,240 ⵳✚㔞ࡣ 0.3㹼1.2 Bq/cm
1.0࡛࠶ࡾ㸪ᾏỈᰕ࡜ሁ✚≀ᰕࡢPu-239㸪
240 ⵳✚㔞ẚࡣ 3.9㹼15.2 ࡛ ࠶ ࡗ ࡓ
0.8㸦ᅗ㸧ࠋኴᖹὒ୰ኸ㒊(ࣅ࢟ࢽ⎔♋)࠿
0.6
ࡽす㒊ኴᖹὒ࡛ࡣᾏỈᰕ࡜ሁ✚≀ᰕ
ࡢPu-239,240 ⵳✚㔞ẚࡣ 0.9㹼3.4 ࡜
0.4ሗ࿌ࡉࢀ࡚࠾ࡾ㸪ᮾ㒊ኴᖹὒ࡛ࡣ᫂
0.2
ࡽ࠿࡟ᾏỈ୰࡟Pu-239,240 ࡀከࡃṧࡗ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡍ࡞ࢃࡕ㸪0.00ᮾ 㒊 ኴ ᖹ ὒ ࡟ ࠾ ࡅ ࡿ ᾏ Ỉ ୰
0.0
2.0
4.0
6.0
0
-2
Pu-239,240 ࡢỿ㝆ࡣ㐜࠸ࠋᾏỈ୰䛾Pu-239,240 / mBq cm
Distribution of Pu-239,240 concentration in the eastern Pacific
TAKIMOTO, K., SUMI, T., KINOSHITA, N., NAKANISHI, T.
− 73 −

1P19㑏ඖⓗ⎔ቃୗ࡟࠾ࡅࡿᮾி‴ᗏ㉁࡟ྵࡲࢀࡿඖ⣲ࡢ໬Ꮫ≧ែ㸦ᮾ኱㝔⥲ྜ㸧‫ۑ‬ཎ┤ᶞࠊᑠ㇋ᕝ຾ぢࠊᯇᑿᇶஅ

࠙ࡣࡌࡵ࡟ࠚᮾி‴࡛ࡣ㏆ᖺỈ㉁ࡀᨵၿࡋࡓ࡜ゝࢃࢀࡿࡀࠊ㟷₻ࡢⓎ⏕࡟ࡼࡾ⁺ᴗ࡬ࡢᙳ㡪ࡀሗ࿌ࡉࢀࡿ➼ࠊᮍゎỴࡢၥ㢟ࢆᢪ࠼࡚࠸ࡿࠋ≉࡟ኟᏘ࡟ࡣ㑏ඖⓗ⎔ቃࡀⓎ㐩ࡋࠊ㈋㓟⣲ỈሢࡢⓎ⏕ࡀ㢖⦾࡟ぢࡽࢀࡿࠋࡲࡓᖸ₲ࡣሁ✚≀ࡀ⁀ࡲࡾࡸࡍࡃࠊሁ✚᫬ࡢỈ㉁⎔ቃࡀᗏ㉁୰
࡟ಖᏑࡉࢀࡿࡇ࡜࠿ࡽࠊ◊✲ᑐ㇟࡜ࡋ࡚ዲ౛࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣࠊᮾி
‴ࡢᖸ₲ᗏ㉁ࠊࡑࡋ࡚ẚ㍑⏝࡜ࡋ࡚ࠊᑠ⥙௦‴ࡢᖸ₲ᗏ㉁ࢆ㖄┤᪉ྥ࡟᥇ྲྀࡋศᯒࡍࡿࡇ࡜
࡛ࠊỈ㉁ࡢ㑏ඖⓗ⎔ቃ࡜ᗏ㉁୰ࡢඖ⣲ࡢ໬Ꮫ≧ែ࡜ࡢ㛵ಀࢆ᫂ࡽ࠿࡟ࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋࡓࠋ࠙ᐇ㦂ࠚᖸ₲ᗏ㉁ࡣከᦶᕝἙཱྀᇦࠊཬࡧᑠ⥙௦‴ࡢᖸ₲࡟࠾࠸࡚ࠊࢥ࢔ࢧࣥࣉ࣮࡛ࣛ㖄┤᪉ྥ࡟᥇ྲྀࡋࡓࠋ᥇ྲྀࡋࡓᗏ㉁ࡣ῝ࡉ᪉ྥ࡟ 3cm ࡈ࡜࡟࢝ࢵࢺࡋࠊࡑࢀࡒࢀ❅⣲㞺ᅖẼୗ࡛ຍᅽࢁ㐣ࢆ⾜ࡗࡓᚋࠊ㧗࢚ࢿࣝࢠ࣮ຍ㏿ჾ◊✲ᶵᵓ Photon Factory ࡢ BL-9A ࡟࠾࠸࡚ࠊX ⥺྾཰ᚤ⣽ᵓ㐀࡟ࡼࡿ≧ែศᯒࢆ⾜࠸ࠊሁ✚⎔ቃࢆホ౯ࡋࡓࠋ᥇ྲྀ᫬࡟ࡣࠊࢧࣥࣉࣜࣥࢢᆅⅬࡢ
Ỉ㉁࡜ᗏ㉁ࡢ㓟໬㑏ඖ㟁఩(ORP)ࢆ ᐃࡋࠊORP ࡢ኱ᑠ࡜ᗏ㉁୰ࡢඖ⣲ࡢ໬Ꮫ≧ែ࡜ࡢ㛵ಀ࡟ࡘ࠸࡚⪃ᐹࢆ⾜ࡗࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚᅗ 1 ࡟ከᦶᕝἙཱྀᖸ₲ᗏ㉁ࡢ㓟໬㑏ඖ㟁఩(ORP)ࡢ㖄┤ኚ໬ࢆ♧ࡋࡓࠋ῝ࡉ 20cm ௨ୖࡢヨᩱ࡛ࡣ ORP ࡣ㈇ࡢ್ࢆྲྀࡗ࡚࠾ࡾࠊ῝ᒙࡢヨᩱ࡯࡝ ORP ࡀᑠࡉࡃ࡞ࡿࠊ༶ࡕ㑏ඖⓗ⎔ቃ࡟࡞ࡿ࡜
࠸࠺㢧ⴭ࡞ഴྥࡀぢࡽࢀࡓࠋࡲࡓᅗ 2 ࡟ࡣከᦶᕝἙ
ཱྀᖸ₲ᗏ㉁ࡢ S ࡢ K ➃ X ⥺྾཰➃㏆ഐᵓ㐀(XANES)
ࢫ࣌ࢡࢺࣝࢆ♧ࡋࡓࠋᅗ 2 ୰ࡢ(1)࠿ࡽ(3)ࡣࠊࡑࢀࡒ
ࢀ(1)ࡀ S2-[-II](2472eV)ࠊ(2)ࡀ SO32-[+IV](2474eV)ࠊ(3)ࡀ SO42-[+VI](2480eV)ࡢࣆ࣮ࢡࢆ♧ࡍࠋ
 ORP ࡀṇࡢヨᩱ࡛ࡣᑠࡉ࠿ࡗࡓࣆ࣮ࢡ(1)ࡀࠊORPᅗ 1㸬ከᦶᕝἙཱྀᖸ₲ᗏ㉁ࡢ㓟໬㑏ඖ㟁఩ࡢ್ࡀᑠࡉࡃ࡞ࡿ࡟ࡘࢀ኱ࡁࡃ࡞ࡗ࡚࠸ࡿࠋࡲࡓ(2)ࡢࣆ࣮ࢡ࡟㛵ࡋ࡚ࡣࠊ⾲ᒙࡢヨᩱ࡛ࡣࣆ࣮ࢡࡀ┠どฟ᮶࡞࠸ࡀࠊ῝ᒙࡢヨᩱ࡟࡞ࡿ࡟ࡘࢀࠊᚎࠎ࡟ࣆ࣮ࢡࡀぢࡽࢀࡿࡼ࠺࡟࡞ࡗ࡚࠸ࡿࠋ᭦࡟ࠊORP ࡀᑠࡉࡃ࡞ࡿ࡟ࡘࢀ(3)ࡢࣆ࣮ࢡࡀᑠࡉࡃ࡞ࡾࠊ㖄┤᪉ྥ࡛S ࡢ≧ែኚ໬ࡀ㢧ⴭ࡟ぢࡽࢀࡿࡇ࡜ࡀศ࠿ࡿࠋᮾி
‴࡛ࡣ㈋㓟⣲ỈሢࡀⓎ⏕ࡋࠊᖸ₲➼࡟࠾࠸࡚㠀ᖖ࡟㑏ඖⓗ࡞⎔ቃࡀసࡽࢀ࡚࠸ࡿࠋ㑏ඖⓗ⎔ቃୗ࡛ࡣࠊ
◲㓟㑏ඖ࡟ࡼࡾ S ࡀ㑏ඖࡉࢀࡿࡇ࡜࠿ࡽࠊࡇࡢࡼ࠺
࡞ S ࡢ㢧ⴭ࡞≧ែኚ໬ࡀ㉳ࡇࡗࡓ࡜⪃࠼ࡽࢀࡿࠋࡇ
ࡢ⤖ᯝ࠿ࡽࠊᗏ㉁ࡢඖ⣲ࡢ໬Ꮫ≧ែ࠿ࡽᮾி‴ࡢ㑏ඖⓗ⎔ቃࢆホ౯࡛ࡁࡿ࡜♧၀ࡉࢀࡓࠋ
ᮏⓎ⾲࡛ࡣࠊẚ㍑⏝࡜ࡋ࡚᥇ྲྀࡋࡓධỤᖸ₲ࡢᑠ⥙௦‴ᖸ₲࡟࠾ࡅࡿᗏ㉁ヨᩱ࡟ࡘ࠸࡚ࡶࠊྜࢃࡏ࡚
ሗ࿌ࡍࡿࠋࡲࡓ௒ᚋࠊ㈋㓟⣲Ỉሢୗࡢὼ ❑ᆅ࡟࠾࠸࡚ࡶࢧࣥࣉࣜࣥࢢࢆ⾜࠸ࠊࡼࡾ㑏ඖⓗ࡞⎔ቃୗࡢ ᅗ 2㸬ከᦶᕝἙཱྀᖸ₲ᗏ㉁࡟࠾ࡅࡿ S ࡢ K ➃XANES ࢫ࣌ࢡࢺࣝ(῝ᗘู)ඖ⣲ࡢ໬Ꮫ≧ែ࡟ࡘ࠸࡚ࡶ♧ࡋࡓ࠸࡜⪃࠼࡚࠸ࡿࠋ
Research on the chemical states of sediments in Tokyo Bay under reducing condition
HARA, N., SHOZUGAWA, K., MATSUO, M.
− 74 −

1P20

᦭ᯏᘒࡂࡠࠥࡦ㧔㧱㧻㨄㧕ߩࠞࡢ࠙ 2JCNCETQEQTCZECTDQ ૕ౝߦ߅ߌࠆ⚵❱ེቭಽᏓᗲᇫᄢ࡮ㄘ ‫   ࠬࠖࡈࠝ࡮࠻࠷࡟ࠣ࡯ࠗޔ‬٤ᴡ㊁౏ᩕ ‫ޔ‬ᔒጘാ㚍 ‫ޔ‬ᩤ ᜏ਽ ‫↰᧻ޔ‬ቬ᣿ ‫ޔ‬㗇⮮᣿ሶ ‫ޔ‬᫪↰᣽ᢅ ‫ ޤߦ߼ߓߪޣ‬ⅣႺਛߢൻቇ⊛ߦ቟ቯߥ᦭ᯏൻว‛߇࿾⃿ⷙᮨߢⅣႺਛߦᐢߊ᜛ᢔಽᏓߒ‫ߐޔ‬ࠄߦࡅ࠻ࠍߪߓ߼㊁↢↢‛૕ౝߦ⫾Ⓧߒߡ޿ࠆߎߣ߇᣿ࠄ߆ߦߐࠇᲥᕈᓇ㗀߇ ᔨߐࠇߡ޿
ࠆ‫ߦ․ޕ‬ઍ⴫⊛ߥᱷ⇐ᕈ᦭ᯏᳪᨴ‛⾰(Persistent Organic Pollutants: POPs))ߦߟ޿ߡ࿖ㅪⅣႺ⸘
↹(UNEP)ߩਥዉߩ߽ߣ POPs ߦ㑐ߔࠆ࿖㓙᧦⚂✦⚿࿖ࠍਛᔃߦ࿖㓙⊛ߥⅣႺࡕ࠾࠲࡝ࡦࠣߣ
ⅣႺᵹ಴ߩૐᷫൻ߇࿑ࠄࠇߡ޿ࠆ‫⃻ޕ‬࿷‫ޔ‬POPs ߣߒߡ࡝ࠬ࠻ࠕ࠶ࡊߐࠇߡ޿ࠆᄙߊߩൻว‛ߪ᦭ᯏࡂࡠࠥࡦൻว‛ߢ޽ࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪ‫ޔ‬ⅣႺ⹜ᢱ߆ࠄ᛽಴ߐࠇࠆ᦭ᯏࡂࡠࠥࡦൻ
ว‛ࠍ฽߻↹ಽࠍਛᕈሶ᡼኿ൻಽᨆߦଏߒ‫᦭ޔ‬ᯏࡂࡠࠥࡦൻว‛ࠍ᦭ᯏᘒࡂࡠࠥࡦ
(Extractable Organic Halogens: EOX)✚૕ߣߒߡಽᨆߒ‫ޔ‬EOX Ớᐲ࡟ࡌ࡞ࠍ᣿ࠄ߆ߦߔࠆߎߣࠍ
⹜ߺߚ‫ੱޕ‬㑆ᵴേߦ઻ߞߡ㒽ၞ߆ࠄᵹ಴ߒߚ᦭ᯏࡂࡠࠥࡦൻว‛ߪ‫ޔ‬᳓࿤߳ᵹ౉ߒ‫ߦࠄߐޔ‬㝼੺㘃ߦ㜞Ớ❗ߐࠇࠆߎߣ߇ផቯߐࠇࠆ‫⎇ᧄߢߎߘޕ‬ⓥߢߪ‫ޔ‬㒽᳓ၞߩ㝼㘃ࠍ៨㘩ߒ‫ޔ‬૕ౝߩ POPs Ớᐲ߇Ყセ⊛㜞޿㝼㘩ᕈ㊁↢㠽㘃ߢ޽ࠆࠞࡢ࠙ࠍ⎇ⓥኻ⽎ߣߒߚ‫ޕ‬‫⹜ޣ‬ᢱߣᣇᴺ‫ ޤ‬ℚℛḓ↥ࠞࡢ࠙ߩᱫ੢୘૕߆ࠄᓧߚઍ⴫⊛ߥ⚵❱‫ེޔ‬ቭ(╭⡺‫ޔ‬⢄⤳‫ޔ‬⢽⢌‫ޔ‬♖Ꮍ‫ޔ‬⢄⤳‫ޔ‬⢖‫ޔ‬⣖‫ޔ‬ᔃ⤳)෸߮ⴊᶧࠍಽᨆߦଏߒߚ‫ޕ‬EOX ᛽಴ᴺߪ‫ޔ‬POPs ಽᨆߦ৻⥸⊛ߦ೑↪ߐࠇߡ޿ࠆᣇᴺߦḰߓ‫ޔ‬਄⸥⹜ᢱ 1㨓⒟ᐲࠍ♖⒊ߒ‫ࠆࠃߦࡦࠨࠠࡋ߮ࠃ߅ࡦ࠻࠮ࠕޔ‬᛽಴ࠍⴕ޿‫ߩߘޔ‬ᓟߦ⚐᳓ࠍ↪޿᦭ᯏṁᇦਛߩήᯏࡂࡠࠥࡦࠍ᳓ᵞ㒰෰ߒߚ‫ޕ‬ᓧࠄࠇߚ᛽಴ᶧ
ࠍࡠ࡯࠲࡝࡯ࠛࡃࡐ࡟࡯࠲࡯ߢỚ❗ߒߚᓟ‫ࡦ࡟࠴ࠛ࡝ࡐޔ‬ኈེߦኽ౉ߒ‫ߩߘߦࠄߐޔ‬ᄖㇱࠍᷡᵺߥࡐ࡝ࠛ࠴࡟ࡦⴼߦ౉ࠇࡐ࡝ࠪ࡯࡜࡯ߢኽ౉ߒߚ‫ޕ‬ਛᕈሶᾖ኿ߪ‫ޔ‬ᣣᧄේሶജ⎇ⓥ㐿⊒ᯏ᭴ JRR-3M ේሶἹ‫ޔ‬ਛᕈሶ᧤ኒᐲ 4.7 x 1013 n/cm2࡮sec ߢ 2 ಽ㑆ᾖ኿ᓟ‫ߦߜ⋥ޔ‬Ⴎ⚛‫ޔ⚛⥇ޔ‬࡛ ࠙ ⚛ ߩ ⺃ ዉ ᩭ ⒳ ߆ ࠄ ᡼ ಴ ߐ ࠇ ࠆ ǫ ✢ ࠍ ᷹ ቯ ߒ ߚ ‫ ߅ ߥ ޕ‬ǫ Ⓞ ⸘ ᷹ ߦ ߪ CANBERRAGX1519-7500SL ෸߮ CANBERRA 556A ࠍ↪޿ߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ಽᨆߦଏߒߚోߡߩࠞࡢ࠙⚵❱‫ེޔ‬ቭ⹜ᢱ߆ࠄ EOX ߇ᬌ಴ߐࠇ‫ᦨޔ‬ૐỚᐲ߇⣢⤳߆ࠄ‫ᦨޔ‬㜞Ớᐲ߇⢽⢌⚵❱߆ࠄᓧࠄࠇߚ‫ޕ‬⢽⢌⚵❱ߦᰴ޿ߢ⣖߇㜞Ớᐲࠍ๒ߒߚ‫ࡢࠞޕ‬࠙ᚑ㠽(‫)ۅ‬2 ୘૕ߩ EOX ⚵❱‫ེޔ‬ቭಽᏓࠍᲧセߒߚߣߎࠈ‫ޔ‬⢽⢌⚵❱ߦᰴ޿ߢ⣖߇Ყセ⊛㜞Ớᐲߣ޿߁⚿ᨐ߇ᓧࠄࠇหߓ௑ะࠍ␜ߒߚ‫৻ޕ‬ᣇ‫ޔ‬EOX ࠍ᭴ᚑߔࠆ EOCl, EOBr, EOI ߩỚᐲ㗅૏ߪ EOCl > EOBr > EOI ߢ࿾Ზሽ࿷ᐲߩ㗅૏ߣหߓߢ޽ߞߚ‫ߦࠄߐޕ‬ฦ⚵❱‫ེޔ‬ቭߦߟ޿ߡ EOCl ߣ EOBr‫ޔ‬EOCl ߣ EOI ߩỚᐲᲧ㑐ଥߦߟ޿ߡᬌ⸛ߒߚߣߎࠈ‫ེ❱⚵ޔ‬ቭߦࠃߞߡ․ᓽ⊛ߥỚᐲᲧࠍ␜ߒ‫ޔ‬EOBr/EOCl Ყߪ⢽⢌⚵❱߇⣖ࠃࠅᄢ߈ߊ‫ޔ‬⢽⢌⚵❱ߢߪႮ⚛‫⚛⥇ޔ‬ේሶࠍ฽߻᦭ᯏൻว‛߇㓸Ⓧߒᤃ޿ߎߣ߇⠨߃ࠄࠇ‫ߪࠄࠇߘޔ‬⢽ṁᕈࠍ᦭ߔࠆߎߣ߇ផቯߐࠇ
ߚ‫ઁޕ‬ᣇ‫ޔ‬⣖ߢߪ EOCl Ớᐲ߇㜞޿߽ߩߩ EOBr, EOI ޿ߕࠇ߽ૐ࡟ࡌ࡞ߢ޽ߞߚ‫ޕ‬⣖ߦߪⴊᶧ࡮⣖㑐㐷߇ሽ࿷ߒ‫ޔ‬POPs ߪ৻⥸ߦߪ⣖߳⒖ⴕߒ㔍޿ߎߣ߇⍮ࠄࠇߡ޿ࠆ߇‫⎇ᧄޔ‬ⓥߢᓧࠄࠇߚ⚿ᨐߪ⣖ߦ⒖ⴕߒ߿ߔ޿᦭ᯏႮ⚛ൻว‛ߩሽ࿷ࠍ␜ໂߒߡ޿ࠆ‫ޕ‬⣖߆ࠄᬌ಴ߐࠇࠆߎࠇ
ࠄൻว‛ߪ‫ޔ‬⢽⢌⚵❱߆ࠄᬌ಴ߐࠇࠆൻว‛ߣߪൻቇ᭴ㅧ߇⇣ߥࠅ↢૕ౝߢ⮎‛ઍ⻢㉂⚛ߦࠃߞߡൻቇ᭴ㅧ߇৻ㇱᄌൻߒߚઍ⻢‛ߢⴊᶧ࡮⣖㑐㐷ࠍㅢㆊߒᤃ޿ൻቇ᭴ㅧࠍ᦭ߒ‫߽߆ߒޔ‬⣖ਛߩ↢૕ᚑಽߣⷫ๺ߒᤃ޿ൻቇ᭴ㅧߢ޽ࠆߎߣ߇ផቯߐࠇࠆ‫ޕ‬

Distribution of Extractable Organohalogens (EOX) in Tissues and Organs of Great Cormorant(Phalacrocorax carbo)
KAWANO, M.,SHIKI, Y., KAKOI, T., MATSUDA, M., SUDO, A., MORITA, M.
− 75 −

1P21

੝㋦ᰳਲࡑ࠙ࠬߩߔ޿⤳⚦⢩ਛߦ߅ߌࠆᓸ㊂ర⚛ߩቯ㊂ߣ࠲ࡦࡄࠢ⾰ߩᄌൻ㕒ጟᄢ㒮࡮ℂ ‫ޔ‬㕒ጟᄢℂ࡮᡼኿⎇  ٤ਅጊᒄ㜞 ‫ޔ ⥶᧻᧛ޔ‬ጊᧄ〈 ‫ޔ‬Ꮉፉ⟤ᥓሶ ‫⩲ޔ‬ᴧ⧷ᄦ ‫ޔ‬⍫᳗⺈ੱ ‫ޤ⸒✜ޣ‬↢૕ౝߦߪߐ߹ߑ߹ߥᓸ㊂ర⚛߇ሽ࿷ߔࠆ߇‫ߩࠄࠇߘޔ‬ᄙߊߪ࠲ࡦࡄࠢ⾰ߣ⚿วߒߡ߅ࠅ‫ޔ‬․ߦ੝㋦ߪ੝㋦㉂⚛ߣߒߡ㕖Ᏹߦᄙߊߩ㉂⚛෻ᔕߦ㑐ਈߒߡ޿ࠆߎߣ߇⍮ࠄࠇߡ޿ࠆ‫ޕ‬ᚒ‫ޘ‬ߪ‫࡞࠺ࡕࠍࠬ࠙ࡑޔ‬േ‛ߣߒߡ‫ޔ‬੝㋦ᰳਲ⁁ᘒߦ߅ߌࠆ↢૕ౝᓸ㊂ర⚛ߩỚᐲᄌൻ߆ࠄߘࠇ
ࠄߩ⋧੕૞↪ߦߟ޿ߡ⎇ⓥࠍⴕߞߡ߈ߚ‫ߩߢ߹ࠇߎޕ‬ታ㛎⚿ᨐࠃࠅ‫ޔ‬੝㋦ᰳਲࡑ࠙ࠬߩ㛽ߣߔ޿⤳ਛߩ੝㋦Ớᐲ߇ኻᾖࡑ࠙ࠬߦᲧߴߡᄢ߈ߊᷫዋߔࠆߎߣ‫ ߪߢ⤳޿ߔޔߚ߹ޔ‬1 ㅳ㑆ߩ੝㋦ᰳਲ㘺⢒ߢ⪺ߒߊ੝㋦Ớᐲ߇ᷫዋߒ‫ߩߘޔ‬ᓟߪ‫ߩߘޔ‬Ớᐲ߇৻ቯߦ଻ߚࠇߡ޿ࠆߎߣ߇
ࠊ߆ߞߡ޿ࠆ‫ߩߢ⤳޿ߔߩߎޕ‬੝㋦Ớᐲߩᄌൻߩℂ↱ߪ‫ߩ⾰ࠢࡄࡦ࠲ޔ‬ᄌൻߦ⿠࿃ߔࠆ߽ߩ
ߣ⠨߃ࠄࠇࠆ‫⎇ᧄޔߢߎߘޕ‬ⓥߢߪ‫ޔ‬1 ㅳ㑆ߩ੝㋦ᰳਲࡑ࠙ࠬߩߔ޿⤳ߦ⌕⋡ߒ‫ޔ‬੝㋦ᰳਲ
ೋᦼߦ߅ߎࠆ੝㋦Ớᐲߩᄌൻߦ㑐ଥߔࠆ࠲ࡦࡄࠢ⾰ߩᄌൻߦߟ޿ߡ⺞ߴࠆߎߣߣߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ޤ‬
ICR ♽㓶ࡑ࠙ࠬߦ੝㋦ᰳਲ㙄ࠍਈ߃ࠆ‫ޟ‬੝㋦ᰳਲ⟲‫ߣޠ‬ኻᾖ㙄ࠍਈ߃ࠆ‫ޟ‬ኻᾖ⟲‫ߩޠ‬ੑ⟲ߦಽߌߚ‫ޕ‬8 ㅳ㦂߆ࠄ 1 ㅳ㑆ߩ㘺⢒ᓟ‫៰ࠍ⤳޿ߔޔ‬಴ߒ 4 㗡ಽࠍ৻⹜ᢱߣߒߡࡎࡕࠫ࠽ࠗ࠭
ࠍⴕߞߚᓟ‫ޔ‬㆙ᔃಽ㔌ᴺߦࠃࠆ⚦⢩ಽ↹ࠍⴕ޿‫↹࡞࠱࠻ࠗࠨޔ‬ಽࠍಽ㔌ߒߚ‫࠱࠻ࠗࠨߩߎޕ‬࡞↹ಽߪᄙߊߩ࠲ࡦࡄࠢ⾰ࠍ฽߻ߚ߼‫ޔ‬SDS-PAGE ߅ࠃ߮ੑᰴర㔚᳇ᵒേߦࠃࠆ࠲ࡦࡄࠢ⾰ߩಽ㔌ࠍⴕ޿‫ޔ‬ਔ⟲㑆ߢߩᄌൻࠍ⺞ߴߚ‫ࠈ࡞ࠥޔߦࠄߐޕ‬ㆊࠢࡠࡑ࠻ࠣ࡜ࡈࠖ࡯ࠍ↪޿ࠆߎߣߦࠃࠅࠨࠗ࠻࠱࡞↹ಽࠍಽሶࠨࠗ࠭೎ߦಽ㔌ߒߚᓟ‫⾰ࠢࡄࡦ࠲ޔ‬Ớᐲߩቯ㊂߿ේሶๆశಽ
ᨆߦࠃࠆ੝㋦Ớᐲߩቯ㊂ࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬
SDS-PAGE ߅ࠃ߮ੑᰴర㔚᳇ᵒേߩ⚿ᨐࠃࠅ‫ޔ‬੝㋦ᰳਲ⟲ߣኻᾖ⟲ߩਔ⟲㑆ߦ߅ߌࠆ࠲ࡦ
ࡄࠢ⾰ߩࡃࡦ࠼߿ࠬࡐ࠶࠻ߦߪᄢ߈ߥᄌൻߪ⷗ࠄࠇߥ߆ߞߚ‫ޔࠄ߆ߣߎߩߎޕ‬ᣂߚߥ࠲ࡦࡄ
ࠢ⾰ߩ⊒⃻޽ࠆ޿ߪᣢሽߩ࠲ࡦࡄࠢ⾰ߩᶖᄬ߇⿠ߎߞߡ޿ࠆߣߪ⠨߃ߦߊ޿‫ޔߒ߆ߒޕ‬ㆊ෰ߦⴕߞߚᯏེਛᕈሶ᡼኿ൻಽᨆߩታ㛎⚿ᨐࠃࠅਔ⟲㑆ߩ੝㋦Ớᐲߦߪᄢ߈ߥᏅ߇⷗ࠄࠇߡ޿
ࠆߎߣ߆ࠄ‫ᤨ⃻ޔ‬ὐߢߪ‫ޔ‬੝㋦฽᦭࠲ࡦࡄࠢ⾰ਛߩ੝㋦߇ㆆ㔌ߒߚࠕࡐ࠲ࡦࡄࠢ⾰ߣߒߡሽ࿷ߒߡ޿ࠆ‫⾰ࠢࡄࡦ࠲ߪߊߒ߽ޔ‬ਛߩ੝㋦߇ઁߩ㊄ዻߦࠃߞߡ⟎឵ߐࠇߡ޿ࠆ╬ߩน⢻ᕈࠍ⠨߃ߡ޿ࠆ‫ޕ‬
Determination of trace elements and transformation of proteins in pancreas of zinc-deficient mice
SHIMOYAMA, H., MURAMATSU, W., YAMAMOTO, O., KAWASHIMA, M., SUGANUMA, H.,
YANAGA, M.
− 76 −

1P22

 㰯⭍ෆᢞ୚ἲࢆ⏝࠸ࡓ࢖ࣥࢫࣜࣥᵝᡂ㛗ᅉᏊ ࡢႥぬ㍺㏦࡟㛵ࡍࡿᇶ♏ⓗ᳨ウ㔠ἑ኱㝔་⣔ ࠊ㔠ἑ኱་◊ ࠊ㔠ἑ኱་  ‫ۑ‬㛗ᒸ୕ᶞ▮ ࠊ㮖ᒣᖾಙ ࠊ㧗ᆏ♸㍤ ࠊኳ㔝Ⰻᖹ ࠙⥴ゝࠚ ࢖ࣥࢫࣜࣥᵝᡂ㛗ᅉᏊ ࡣ  & ࡢ࣏ࣜ࣌ࣉࢳࢻ࡛ࠊ⬻᱾ሰࡸ⚄⤒ኚᛶ⑌ᝈࡢᨵၿ࡟᭷⏝࡞≀㉁࡛࠶ࡿ࡜⪃࠼ࡽࢀ࡚࠸ࡿࠋ⾑ὶ࡟ࡼࡿ⬻ෆ࡬ࡢ㧗ศᏊ≀㉁㍺㏦ࡣ⬻⾑ᾮ㛵㛛࡟ࡼࡾ㜼ᐖࢆཷࡅࡸࡍ࠸ࡓࡵࠊࡑࡢᢞ୚ἲࡣ⬻ᐇ㉁ෆࡲࡓࡣ⬻ᐊෆ࡬ࡢ┤᥋ὀධ࡜࠸࠺౵くⓗ࡞᪉ἲࡀྲྀࡽࢀࡿࠋᮏ◊✲ᐊ࡛ࡣ୍㒊ࡢ㔜㔠ᒓࡀႥ⚄⤒ࢆ௓ࡋࠊ࠿ࡘ  ࢆ㎽ᅇࡋ࡚⬻ෆ࡬࡜⛣⾜ࡍࡿࡇ࡜ࢆぢ࠸ࡔࡋࡓࠋ ࡶࡲࡓ㰯⭍ෆᢞ୚࡟ࡼࡾ  ࢆ㎽ᅇࡋ࡚┤᥋ⓗ࡟⬻ෆ࡬࡜⛣⾜ࡍࡿ㍺㏦⤒㊰ࡀື≀ᐇ㦂࡛☜ㄆࡉࢀ࡚࠸ࡿࡶࡢࡢࠊࡑࡢ㍺㏦ᶵᗎࡸ㍺㏦᫬㛫ࡣᮍࡔ᫂ࡽ࠿࡜࡞ࡗ࡚࠸࡞࠸ࠋᮏ◊✲࡛ࡣࡇࢀࡽࡢゎ᫂࡟ྥࡅ࣐࢘ࢫࡢ㰯⭍ࡲࡓࡣᑿ㟼⬦࡟ẚᨺᑕ⬟ࡢ␗࡞ࡿᨺᑕᛶࣚ࢘⣲ ᶆ㆑  ⁐ᾮࢆᢞ୚ࡋࠊ⬻⚄⤒⣔࡬ࡢ⤒᫬ⓗ࡞⛣⾜࡟ࡘ࠸࡚ẚ㍑᳨ウࢆ⾜ࡗࡓࠋ࠙ᐇ㦂ࠚ ! ⣔  㐌㱋㞝ᛶ࣐࢘ࢫ࡟
✀ࡢ␗࡞ࡿẚᨺᑕ⬟  4<+ࠊ.4<+ࠊ</ .4<+ࡢ  ⁐ᾮࢆࠊ㰯⭍ෆᢞ୚ἲ࡛ࡣྑ㰯⭍ෆ࡟ </ ࢆࠊ㟼⬦ᢞ୚ἲ࡛ࡣ
ࢆᑿ㟼⬦࠿ࡽᢞ୚ࡋࡓ1 ࠋᢞ୚ᚋ ࠊ ࠊ ࠊ ࠊ  ࠊ  ศ࡛⾑ᾮ࡜⬻⚄⤒⤌⧊Ⴅ⌫ࠊ኱⬻ࠊ୰⬻ࠊᶫ࣭ᘏ㧊ࠊᑠ⬻ࠊ୕ཫ⚄⤒ࢆ᦬ฟࡋࠊ‵㔜㔞ࢆ ᐃࡋ࡚࠿ࡽ࢙࢘ࣝᆺ࣐࢞ࣥ࢝
࢘ࣥࢱ࡛ィ ࡋ࡚ྛ⤒㐣᫬㛫࡟࠾ࡅࡿ༢఩㔜㔞࠶ࡓࡾࡢྲྀ㎸⋡(26)+ࢆồࡵࡓࠋࡲࡓ㰯Ꮝ࿘ᅖࡢ⓶⭵࠾ࡼࡧ㰯⭍ࡶ᦬ฟࡋ࢙࢘ࣝᆺ࣐࢞ࣥ࢝࢘ࣥࢱ࡛ィ ࡋ࡚࠿ࡽྲྀ㎸⋡(26)ࢆồࡵࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ 㰯⭍ෆᢞ୚⩌࡛ࡣẚᨺᑕ⬟ࡀపࡃ࡞ࡿ࡟ࡘࢀ㰯⭍ࡢྲྀ㎸⋡ࠊࡑࡋ࡚⾑ᾮ࠾ࡼࡧ⬻⚄⤒⤌⧊࡛ࡢ༢఩㔜㔞࠶ࡓࡾࡢྲྀ㎸⋡ࡀୖ᪼ࡋࡓࠋࡇࢀࡣẚᨺᑕ⬟ࡢపୗࠊࡘࡲࡾ⁐ᾮ୰ࡢ⥲  ⃰ᗘࡢୖ᪼࡟ࡼࡗ࡚㰯⭍ෆ࡬ࡢ  ࡢ⁫␃ᛶࡀྥୖࡋࠊᣢ⥆ⓗ࡟⾑ᾮ࠾ࡼࡧ⤌⧊୰࡬࡜ྲྀࡾ㎸ࡲࢀࡿࡇ࡜࡟ࡼࡿ࡜⪃࠼ࡽࢀࡿࠋࡲࡓࠊẚᨺᑕ⬟ࡀ.4<+ ࠾ࡼࡧ .4<+ ࡢ  ⁐ᾮ㰯⭍ෆᢞ୚⩌࡛ࡣႥ⌫࠾ࡼࡧ୕ཫ⚄⤒࡛ᢞ୚ᚋ  ศࡲ࡛ࡢ༢఩㔜㔞࠶ࡓࡾࡢྲྀ㎸⋡ࡣࡑࡢ௚ࡢ⬻⚄⤒⤌⧊࡜⾑ᾮ࡟ẚ࡭࡚㧗ࡃ࡞ࡾࠊႥ⚄⤒ࡲࡓࡣ୕ཫ⚄⤒ࢆ௓ࡋࡓ⬻⚄⤒⣔࡬ࡢ┤᥋ⓗ࡞㍺㏦⤒㊰ࡀ♧၀ࡉࢀࡓࠋ௨ୖࡼࡾ  ࡣ㰯⭍ෆᢞ୚࡟ࡼࡗ࡚Ⴅ
ぬ⤒㊰ࢆ௓ࡋ࡚⬻ෆ࡬㏿ࡸ࠿࡟㍺㏦࡛ࡁࡿࡇ࡜ࡀᮇᚅ࡛ࡁࡓࠋ ᅗ  ྛẚᨺᑕ⬟࡛ࡢ㰯⭍ࡢྲྀ㎸⋡              ᅗ  㰯⭍ෆᢞ୚  ศᚋࡢྛ⤌⧊࡟ࡘ࠸࡚ࡢ༢఩㔜㔞࠶ࡓࡾࡢྲྀࡾ㎸ࡳ⋡9&/8&7-21*25 /*&'725;#5&1632572*175&1&6&//;(0-1-67)5)(168/-1/-.)52:7,&'725 $"% "% !
− 77 −

1P23

᛫૕ᮡ⼂߇น⢻ߥήᜂ૕ .W ߩ⵾ㅧᴺߩ㐿⊒ේሶജᯏ᭴ ‫⟲ޔ‬㚍ᄢቇ㒮ක  ٤ᷰㄝ ᥓ ‫ޔ‬ᯅᧄ๺ᐘ ‫ޔ‬ᷰㄝ⨃᮸ ‫ޔ‬㘵↰㕏ᒾ ‫⧎ޔ‬ጟብผ ‫ޔ‬㆙⮮໪๋ ‫ޔ‬⍹ጟౖሶ ‫ ޤߦ߼ߓߪޣ‬.W㧔ඨᷫᦼ ᣣ㧕ߪ‫ࠎ߇ޔ‬ᴦ≮ߦㆡߒߚ Ǫ ✢㧔ᦨᄢࠛࡀ࡞ࠡ࡯㧦MG8㧕ߦട߃ߡ߇ࠎ߳ߩ㓸Ⓧ⁁ᴫࠍࡕ࠾࠲࡯น⢻ߥ ǫ ✢㧔MG8 ෸߮ MG8㧕ࠍหᤨߦ᡼಴ߔࠆߚ
߼‫ޔ‬ౝ↪᡼኿✢ᴦ≮߳ߩㆡ↪߇᦭ᦸⷞߐࠇߡ޿ࠆ‫ޕ‬ᚒ‫ߦ⊛⇣․ߦࠎ߇ޔߪޘ‬Ớ㓸ߔࠆࡕࡁࠢࡠ࡯
࠽࡞᛫૕߳ .Wࠍᮡ⼂ߒߚ .W᛫૕ࠍ㐿⊒ߒ‫ޔ‬.W᛫૕ߩ߇ࠎᴦ≮⮎ߣߒߡߩ᦭↪ᕈࠍ⹏ଔߔ
ࠆߎߣࠍ⋡ᜰߒߡ޿ࠆ‫ޔߪߦ߼ߚߩߘޕ‬㜞⚐ᐲߢ቟ቯห૏ర⚛ࠍ฽߹ߕ᡼኿ᕈห૏ర⚛ߛߌߩήᜂ૕ߩ .W ߇ᔅⷐߢ޽ࠆ‫⎇ᧄޔߢߎߘޕ‬ⓥߢߪ‫ޔ‬.W㧙᛫૕ߩวᚑ߇น⢻ߥ㜞⚐ᐲߢήᜂ૕ߩ .W
ߩ⵾ㅧᴺߩ㐿⊒ࠍ⋡⊛ߣߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬ήᜂ૕ .W ߩ⵾ㅧᴺߣߒߡߪ‫;ޔ‬D 㨚ǫ ;D㧔ඨᷫᦼ  ᤨ㑆㧕ψ.W ෻ᔕࠍ↪
޿‫ ⚂ޔ‬OI ߩỚ❗ ;D㧞1㧟 Ớ❗ᐲ 㧕ࠍේሶἹ ,44 ߢᾖ኿ߒߚ‫ޕ‬ᾖ኿ᷣߺߩỚ❗


;D㧞1㧟ࠍႮ㉄ߣㆊ㉄ൻ᳓⚛᳓ߢṁ⸃ߒߡ⫳⊒ੇ࿕ߩᓟ /*%N ṁᶧߣߒߚ‫ߩߎޕ‬ṁᶧࠍ *2.%㧔ㅒ⋧ࠪ࡝ࠞࠥ࡞ࠞ࡜ࡓ㧦9CVGTU4GUQNXG%4CFKCN㧙2CEMOOǾZOO㧕ߦ࠴ࡖ࡯ࠫߒ‫ޔ‬ṁ㔌ᶧߣߒߡ /ࡅ࠼ࡠࠠࠪࠗ࠰㈼㉄㧔*+$#㧕/㧙ࠝࠢ࠲ࡦࠬ࡞ࡎࡦ㉄࠽࠻࡝࠙ࡓ
㧔15㧕ࠍ↪޿‫ޔ‬ᵹㅦ ONOKP ߢ‫ޔ‬.W ߣ࠲࡯ࠥ࠶࠻ߢ޽ࠆ ;D ߣࠍಽ㔌ߒߚ‫ޕ‬ಽ㔌ᓟߩ .W ࡈ࡜࡚ࠢࠪࡦࠍ㓁ࠗࠝࡦ੤឵ࠞ࡜ࡓ $KQ4CF#)9Z㧘OOǾOO㧕ߦㅢߒߡ .W ࠍ᮸⢽ߦๆ⌕ߐߖߡ߅߈‫ޔ‬/*%N ࠍᵹߒߡ *+$#15 ࠍቢోߦ㒰෰ߒߚᓟ‫ޔ‬/*%N ߢ .W ࠍṁ㔌ߒߡᦨ⚳ .W ṁᶧߣߒߚ‫ޕ‬ᰴߦ‫ ⚳ᦨߩߎޔ‬.W ṁᶧࠍ⫳⊒ੇ࿕ߒߚᓟ /㈶㉄ߢṁ⸃ߒ‫ޔ‬㈶㉄✭ⴣᶧ
ߣ 0W$ ᖡᕈ࡝ࡦࡄ⣲ߦᄙߊ⊒⃻ߔࠆ %& ᛫ේࠍ⹺⼂ߔࠆ᛫૕ ߦࠠ࡟࡯࠻೷ߢ޽ࠆ &16#㧔VGVTCC\CE[ENQFQFGECP000̉̉0̉̉̉VGVTCCEGVKECEKF㧕ࠍ⚿วߐߖߚൻว‛ࠍട߃ߡ ͠ߢ෻ᔕߐߖߡ .W&16#0W$ ߩวᚑࠍ⹜ߺߚ‫ޕ‬ᮡ⼂₸㧔ᮡ⼂₸㧑㧩วᚑߒߚ

.W&16#0W$ ߩ᡼኿⢻㊂ᮡ⼂ታ㛎ߦ↪޿ߚ .W ߩ᡼኿⢻㊂㧕ߪ‫⭯ޔ‬ጀࠢࡠࡑ࠻ࠣ࡜ࡈࠖ

࡯ߦࠃࠅ᳞߼ߚ‫ޕ‬‫⚿ޣ‬ᨐ෸߮⠨ኤ‫ޤ‬਄⸥ᣇᴺߦࠃࠅ⵾ㅧߒߚ .W ࠍ↪޿ߡ‫ޔ‬᛫૕߳ߩᮡ⼂ࠍ⹜ߺߚ⚿ᨐ‫ޔ‬ᮡ⼂₸ߪ㧑એਅߣᖡ޿ߎߣ߇್᣿ߒߚ‫ޕ‬+%2/5 ߦࠃࠆਇ⚐‛ర⚛ߩቯ㊂ࠍⴕ޿‫ߩߎޔ‬ේ࿃ࠍ⺞ᩏߒߚ⚿ᨐ‫*ޔ‬+$#15 ⹜⮎ਛߩਇ⚐‛ర⚛㧔%C(G<P㧕߇ේ࿃ߢ .W&16#0W$ ߩᮡ⼂㒖ኂ߇⿠ߎߞߡ޿ࠆߎߣ߇ಽ߆ߞߚ‫ߩࠄࠇߎޔߢߎߘޕ‬ਇ⚐‛ర⚛ߩᷙ౉ࠍน⢻ߥ㒢ࠅᛥ೙ߔࠆߚ߼ߦ‫ޔ‬
*+$# ߦߟ޿ߡߪ㓁ࠗࠝࡦ੤឵ࠞ࡜ࡓ㧔$KQ4CF#)9ZOOǾOO㧕‫ޔ‬15 ߦߟ޿ߡߪ
ࠠ࡟࡯࠻੤឵ࠞ࡜ࡓ㧔$KQ4CF%JGNGZOOǾOO㧕ࠍ↪޿ߡ♖⵾ߒ‫ޔ‬ฦਇ⚐‛ర⚛ߩᦨ⚳ .W ṁᶧਛߩ฽᦭㊂ࠍ 㧑⒟ᐲ߹ߢᷫዋ㧔%CψRRD‫(ޔ‬GψRRD‫<ޔ‬PψRRD㧕
ߐߖߚ‫ޔߦࠄߐޕ‬਄ㅀߩ♖⵾ㆊ⒟ߩ㓁ࠗࠝࡦ੤឵ᠲ૞ߩᓟߦ‫ޔ‬㒶ࠗࠝࡦ੤឵ᠲ૞ $KQ4CF#)Z㧘
OOǾOO㧕ࠍㅊടߒߡᦝߥࠆਇ⚐‛㒰෰ኻ╷ࠍᣉߔߎߣߦࠃࠅ‫ ߥ⊛⚳ᦨޔ‬%C‫(ޔ‬G ෸߮ <P Ớᐲࠍ‫ ࠇߙࠇߘޔ‬RRD ߹ߢᷫዋߐߖߚ‫ޕ‬એ਄ߩ⚿ᨐ‫ᧄޔ‬ᡷ⦟ᴺߦࠃࠅಽ㔌࡮♖⵾ߒߚ .Wࠍ↪޿ߚ႐ว‫ޔ‬᛫૕߳ߩᮡ⼂₸ߪ 㧑એ਄ߣߥࠅ‫ޔ‬᛫૕߳ߩᮡ⼂߇น⢻ߥ㜞⚐ᐲήᜂ૕ .W ߩ⵾ㅧ߇น⢻ߣߥߞߚ‫ޕ‬
Production of Lu-177 capable of labeling antibodies
WATANABE Sa, HASHIMOTO K, WATANABE Sh, IIDA Y, HANAOKA H, ENDO K, ISHIOKA N− 78 −

1P24

2<%94Gࠫࠚࡀ࡟࡯࠲ߩ㐿⊒ߣ 4G ෸߮4G&/5# ߩวᚑ᧲ᄢࠕࠗ࠰࠻࡯ࡊ✚ว࠮ ‫ޔ‬ේሶജᯏ᭴ ‫ޔ‬᣿ᴦᄢቇ⎇ⓥ࡮⍮⽷ᚢ⇛ᯏ᭴  ٤㊁Ꮉᙗᄦ ‫ޔ‬ᯅᧄ๺ᐘ ‫ޔ‬ᩙේ㓶৻ ‫ޔ‬ዊᳰ⵨਽ ‫ޔ‬᫪Ꮉዏᆭ ‫ޔ‬੗ዥᙗ৻ ‫ࠎ߇ޤߦ߼ߓߪޣ‬ᴦ≮ߦㆡߒߚࠛࡀ࡞ࠡ࡯ߩ Ǫ ✢෸߮ᩭකቇࠗࡔ࡯ࠫࡦࠣߦㆡߒߚ ǫ ✢ࠍหᤨߦ᡼಴ߔࠆఝࠇߚ․ᕈࠍᜬߟ࡟࠾࠙ࡓ㧔Ǫ✢ OCZ/G8㧕෸߮࡟࠾࠙ࡓ㧔Ǫ✢ OCZ/G8㧕ߦߟ޿ߡ‫ޔ‬ᚒ‫ߪޘ‬Ԙ㜞Ყ᡼኿⢻ 4G ߩ⵾ㅧᛛⴚߩ㐿⊒‫ޔ‬ԙ᡼኿ᕈ࡟࠾࠙ࡓ
ᮡ⼂ൻว‛ߩታ↪⊛⺞⵾ᴺߩ㐿⊒‫ޕࠆ޿ߡߞⴕࠍޔ‬Ԙߦߟ޿ߡߪ‫ߩࡦ࠹ࠬࠣࡦ࠲ޔ‬ๆ⌕ኈ㊂߇ࠕ࡞ࡒ࠽ߩᢙච୚એ਄߽޽ࠆࠫ࡞ࠦ࠾࠙ࡓ♽ήᯏ㜞ಽሶ 2<%㧔2QN[<KTEQPKWO%QORQWPF㧕
ࠍ↪޿ߚᣂⷙߩዊဳ 94G ࠫࠚࡀ࡟࡯࠲ߩታ↪ൻࠍ⋡ᜰߔ‫ޕ‬ԙߦߟ޿ߡߪ‫⸻ߩࠎ߇ޔ‬ᢿ࡮ᴦ≮ߩߚ߼ߩ᡼኿ᕈ⮎೷ߣߒߡᵈ⋡ߐࠇࠆ 4G ෸߮ 4G㧙ࠫࡔ࡞ࠞࡊ࠻ࠦࡂࠢ㉄㧔&/5#㧕ߩO

6E ᡼኿ᕈ⮎೷ߣห᭽ߦ㓐ᤨ૶↪น⢻ߣߥࠆࠃ߁ߥ◲ଢߥᠲ૞ᴺߦࠃࠆวᚑᴺߩ㐿⊒ࠍ⋡ᜰߔ‫ޕ‬ߩᤨ㑆ᄌൻࠍ (KI ߦ␜ߔ‫⚿ߩߘޕ‬ᨐ‫ޔ‬⵾ㅧᤨᦼ෸߮☸ᓘߦଐࠄߕ ͠ߢ ಽ㑆ടᾲߔࠆߣๆ⌕₸ߪ એ਄ࠍ␜
ߒߚ‫ޕ‬R* ߪ෻ᔕ㐿ᆎ೨㧣೨ᓟ߆ࠄ෻ᔕ⚳ੌᓟ 㨪㧠ߦૐਅߒߚ‫ޕ‬2<% ࠍࠟ࡜ࠬࠞ࡜ࡓߦలႯߒ↢ℂ㘩Ⴎ᳓ߢ 4G ࠍṁ಴ߐߖߚ⚿ᨐ‫ޔ‬4G ߦኻߔࠆਇ⚐‛ߣߒ

Adsorption yield of 188W to PZC / %‫ޣ‬ታ㛎‫ޤ‬Ԙ࠻࡟࡯ࠨ࡯㊂ߩ 9 ࠍ↪޿ߡ‫ޔ‬9 ߩ 2<% ߳ߩᦨㆡๆ⌕᧦ઙ㧔R*‫ޔ‬෻ᔕ᷷ᐲ‫ޔ‬෻ᔕᤨ㑆╬㧕෸߮ 4G ṁ಴᜼േߦߟ޿ߡ⺞ߴߚ‫ޕ‬2<% ߪ㧔ᩣ㧕ൻ⎇⵾ߢ⵾ㅧᤨᦼߣ☸ᓘߩ⇣ߥࠆ⵾ຠࠍታ㛎ߦ↪޿ߚ‫ޕ‬9 ߪේሶജᯏ᭴⵾ߢߘߩൻቇᒻߪ 91ߢ޽ࠆ‫ޕ‬ๆ⌕ታ㛎ߪ‫ޔ‬෻ᔕ᷷ᐲ ͠৻ቯߣߒ‫ޔ‬㨪 ಽ㑆⚂  ಽ㑆㓒ߢ෻ᔕṁᶧߩ৻ㇱណขߒ‫ޔ‬2<% ߳ߩ 9 ߩๆ⌕₸ߣṁᶧߩ R* ࠍ᷹ቯߒߚ‫ޕ‬ๆ⌕₸ߪ‫ޔ‬ណขᶧࠍ⚂  ᣣᓟ 9 ߩሶቊᩭ⒳ߢ޽ࠆ 4G㧔ඨᷫᦼ ᤨ㑆㧕ࠍǫࠞ࠙ࡦ࠲㧔 ᩣ ࡄ࡯ࠠࡦࠛ࡞ࡑ࡯‫࡜ࡉࠦޔ‬㧔ࠢࡢࡦ࠲ࡓ 㧕㧕ߢ᷹ቯߒ‫ޔ‬ടᾲ೨ߩ᡼኿⢻ߦኻߔࠆഀวߢ᳞߼ߚ‫ޕ‬ԙ4G ෸߮4G&/5# ߩวᚑߦߪ‫ޔ‬ㆶర೷ߣߒߡႮൻ
╙৻ࠬ࠭ࠍ↪޿ߚ‫ޔߕ߹ޕ‬Ⴎൻ╙৻ࠬ࠭߇ṁ⸃ߔࠆࠕ࡞ࠞ࡝ṁᶧ㧔㨜*㧕ߢᮡ⼂ൻࠍⴕ޿‫ޔ‬100ᮡ⼂‛ߩ᡼኿ൻቇ⊛෼₸෸߮ಽሶ㊂ࠍ᳞߼ࠆߚ߼ߩ 6.% ෸߮ࠥ࡞ࠢࡠࡑ࠻ࠣ
80࡜ࡈࠖ࡯ߩಽᨆ᧦ઙߦߟ޿ߡᬌ⸛ߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬Ԙ9 ߩ 2<% ߳ߩๆ⌕₸
60

40

20

#090206

䃂: 710 - 297 ȝm
䂥: 297 - 150 ȝm< 150 ȝm
䂹:#090217

䂾: 710 - 297 ȝm
䂦: 297 - 150 ȝm䂺:< 150 ȝm

0
0

30

60

90
120
150
180
210
Reacting time / minuteFig. 1 Variation of adsorption yield of 188W to PZC with reacting time.

ߡṁ಴ߔࠆ 9 ߩഀวߪ 㨪 ߢ‫ߩߘޔ‬ౝᓸ☳⁁ߪ 㨪 ߢ޽ߞߚ‫ޕ‬ԙࠕ࡞ࠞ࡝ṁᶧਛߢวᚑߒߚ 4G ෸߮ 4G&/5# ߩ᡼኿ൻቇ⊛෼₸ߪ‫ޔ‬෻ᔕᶧࠍ㉄ᕈᓟ 6.% ಽᨆߦࠃࠅ᳞
߼ࠄࠇ‫ߩߘޔ‬ಽሶ㊂ࠍផቯߔࠆߦߪࠥ࡞̌5GRJCFGZ)̍ࠍ↪޿ࠇ߫ࠃ޿ߎߣ߇ࠊ߆ߞߚ‫ޕ‬⚿ᨐߩ⹦⚦ߦߟ޿ߡߪ‫ޕࠆߔ⴫⊒ߢ࡯࠲ࠬࡐޔ‬ᧄ⎇ⓥߪ‫ޔ‬ᢥㇱ⑼ቇ⋭ේሶജၮ␆ၮ⋚ᚢ⇛⎇ⓥࠗ࠾ࠪࠕ࠹ࠖࡉߦࠃࠅታᣉߐࠇߚ‫ޟ‬వㅴ⊛ߥ߇ࠎ⸻ᢿ࡮ᴦ≮ࠍታ⃻ߔࠆ 4+&&5 㐿⊒⎇ⓥ‫ߩޠ‬ᚑᨐߢ޽ࠆ‫ޕ‬

Study of the 188W - 188Re generator using PZC and synthesis of 186 Re and 188Re-DMSANOGAWA, N., HASHIMOTO, K., KURIHARA, Y., KOIKE, Y., MORIKAWA, N., IJIRI, K.1− 79 −

1P25

ຍ㏿ჾࢆ⏝࠸ࡓ࢔ࣝࣇ࢓ᨺᑕయ 230U ࡢ〇㐀࠾ࡼࡧศ㞳⢭〇࡟㛵ࡍࡿᇶ♏ⓗ᳨ウ㔠ἑ኱་⸆ಖ೺ ࠊ㜰኱㝔⌮ ࠊ㔠ἑ኱㝔⮬↛⛉Ꮫ ࠊ㔠ἑ኱⌮ᕤ  ‫ۑ‬㮖ᒣᖾಙ ࠊ㧗ᶫᡂே ࠊⲨᮌᖿ⏕ ࠊᶓᒣ᫂ᙪ ࠊ⠛ཎཌ ࠊኳ㔝Ⰻᖹ ࠙ࡣࡌࡵ࡟ࠚ࢔ࣝࣇ࢓⢏Ꮚࡣࠊ⏕య⤌⧊୰࡛▷㣕⛬ୟࡘ㧗 LET ࡜࠸࠺≉ᚩࢆᣢࡘࡇ࡜࠿ࡽ᰾
་Ꮫ㡿ᇦ࡟࠾࠸࡚⒴἞⒪࡬ࡢᛂ⏝ࡀᮇᚅࡉࢀ࡚࠸ࡿࠋࡇࢀࡲ࡛࡟ 223RaCl2 ࢆ⏝࠸ࡓ㌿⛣ᛶ㦵⭘⒆ࡢ἞⒪ࡸ 213Bi, 211At ᶆ㆑ࣔࣀࢡ࣮ࣟࢼࣝᢠయ࡞࡝ࡀࣄࢺ⮫ᗋヨ㦂࡟ᛂ⏝ࡉࢀ࡚࠸ࡿࠋࡋ
࠿ࡋ⮫ᗋヨ㦂ࢆ᥎㐍ࡍࡿࡓࡵ࡟༑ศ࡞㔞ࡢࡇࢀࡽࡢ࢔ࣝࣇ࢓ᨺᑕయࢆ☜ಖࡍࡿࡇ࡜ࡣ㞴ࡋࡃࠊࡇࢀࡀ࢔ࣝࣇ࢓ᨺᑕయࡢ᰾་Ꮫ฼⏝㐍ᒎࡢጉࡆࡢせᅉ࡜࡞ࡗ࡚࠸ࡿࠋࡇࡢ≧ἣࢆᡴ㛤ࡍࡿࡓ
ࡵ࡟ຍ㏿ჾ࡟ࡼࡗ࡚࢔ࣝࣇ࢓ᨺᑕయࢆ〇㐀ࡍࡿヨࡳࡀୡ⏺ⓗ࡟⾜ࢃࢀ࡚࠸ࡿࠋ᪥ᮏ࡛ࡣ⮫ᗋᛂ⏝ࡀྍ⬟࡞㔞ࡢ࢔ࣝࣇ࢓ᨺᑕయࢆ㈓ⶶࡋ࡚࠸ࡿ◊✲᪋タࡣⓙ↓࡟➼ࡋࡃࠊ⌧ᐇⓗ࡞౪⤥యไࢆ⪃៖ࡍࡿ࡜ࠊຍ㏿ჾ࡛〇㐀ྍ⬟࡞࢔ࣝࣇ࢓ᨺᑕయࡢ☜ಖࡀ௒ᚋ㔜せ࡜࡞ࡗ࡚ࡃࡿࠋࡇࡢ
ືࡁࡢ୰࡛㏆ᖺࠊ232Th ࡢ㝧Ꮚㄏ㉳᰾཯ᛂ࡟ࡼࡾ⏕ᡂࡍࡿ 230Pa (T1/2 = 17.4 day)ࢆฟⓎ≀㉁࡜ࡋ
࡚ࠊࡑࡢE㸫ቯኚ࡛⏕ᡂࡍࡿ 230U (T1/2 = 20.8 day)ࢆ⏝࠸ࡿࡇ࡜ࡀὀ┠ࡉࢀ࡚࠸ࡿࠋ230U ࡣDቯኚࡢᚋ࡟ྲྀࡾᢅ࠸ࡸࡍ࠸༙ῶᮇࡢ 226Th (T1/2 = 31 min)࡟࡞ࡿ(Fig. 1)ࡓࡵࠊࢪ࢙ࢿ࣮ࣞࢱ࣮࡜ࡋ࡚
ࡢ฼⏝ࡀ࡛ࡁࡿࠋࡉࡽ࡟ 226Th ࡣࡑࡢᚋ 210Pb (T1/2 = 22.3 y)࡟⮳ࡿࡲ࡛ 4 ᅇȘቯኚࢆ⾜࠸(Fig. 1)ࠊ
࠸ࡎࢀࡶ༙ῶᮇࡀ 1 ศ௨ୗ࡛࠶ࡿࡓࡵࠊ඲య࡛ 27.7 MeV ࡢ࢚ࢿࣝࢠ࣮ࢆᶆⓗ⤌⧊࡟ᑐࡋ࡚↷ᑕࡀྍ⬟࡛࠶ࡿࠋࡋࡓࡀࡗ࡚ 230U㸫226Th ࢪ࢙ࢿ࣮ࣞࢱ࣮ࡢ㛤Ⓨࡸࠊᡈ࠸ࡣ 230U ࡑࡢࡶࡢࢆ⸆
≀ᶆ㆑ࡋࡓ in vivo generator ࡣࠊࡇࢀ࠿ࡽࡢD⥺ࢆ⏝࠸ࡓෆ⏝ᨺᑕ⒪ἲ࡛ࡣ᭷⏝࡞ࡶࡢ࡟࡞ࡾ
࠺ࡿࠋࡑࡇ࡛ᮏ◊✲࡛ࡣຍ㏿ჾࢆ⏝࠸ࡓ 230Pa ࠾ࡼࡧ 230U ࡢᅜෆ࡟࠾ࡅࡿ〇㐀ࡢྍ⬟ᛶ࠾ࡼࡧᶆⓗ࠿ࡽࡢศ㞳⢭〇࡟㛵ࡍࡿᇶ♏ⓗ᳨ウࢆ⾜ࡗࡓࠋ࠙ᐇ㦂ࠚ㓟໬ࢺ࣒ࣜ࢘(ThO2) 80mg ࢆຍᅽᡂᆺࡋࠊ┤ᚄ 7 mm)ࡢ࣌ࣞࢵࢺ࡜ࡋࡓࠋࡇࡢᶆⓗ࡟ᑐࡋ࡚ࠊ኱㜰኱Ꮫ᰾≀⌮◊✲ࢭࣥࢱ࣮ K-70 AVF ࢧ࢖ࢡࣟࢺࣟࣥ࠿ࡽᚓࡽࢀࡿ㝧Ꮚࣅ࣮࣒ࢆ K ࢥ࣮ࢫ࡟ᑟධࡋ࡚ࠊ㝧Ꮚ↷ᑕࢆ⾜ࡗࡓࠋ㝧Ꮚࡢຍ㏿࢚ࢿࣝࢠ࣮ࡣᩥ⊩ࢆᇶ࡟ 26 MeV ࡜ࡋ㟁ὶ್ࡣ⣙ 1 PA ࡜ࡋࡓࠋ↷ᑕᚋࠊ㔠ἑ኱Ꮫ࢔࢖ࢯࢺ࣮ࣉ⌮ᕤ⣔◊✲᪋タ࡟⛣ືࡋࠊ4 㐌㛫ᨺ⨨ࡋ࡚▷ᑑ࿨᰾ศ⿣᰾✀ࡢῶ⾶࠾ࡼࡧࠊ230Pa ࡢῶ⾶࡟ࡼࡾ⏕ᡂࡍࡿ 230U ࡢᡂ㛗ࢆᚅࡗࡓࠋ
230
Pa ࡢ⏕ᡂࡣJ⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮࡛ࣜ☜ㄆࡋࡓࠋࡑࡢᚋࠊThO2 ࢆ◪㓟࡛⁐ゎࡋࠊሷ㓟⣔࡟ࡋࡓࡢࡕࠊ㝜࢖࢜ࣥ஺᥮ᶞ⬡࣒࢝ࣛἲࢆ⏝࠸࡚ 230U ࢆศ㞳⢭〇ࡋࡓࠋ230U ࡢ☜ㄆࡣD⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮࡛ࣜ⾜ࡗࡓࠋ ࡉࡽ࡟ 230U ࢆ㝜࢖࢜ࣥ஺᥮ᶞ⬡࡟╔Ⅼࡋࠊࢪ࢙ࢿ࣮ࣞࢱ࣮ࢆసᡂ
ࡋࡓࠋࢪ࢙ࢿ࣮ࣞࢱ࣮࡟ 8M HCl ࢆὶࡋࠊ226Th ࡢ⁐㞳ࢆ⾜ࡗࡓࠋ࠙⤖ᯝࠚThO2 ࡢ㝧Ꮚ᰾཯ᛂ࡛ 230Pa ࡀ⏕ᡂࡍࡿࡇ࡜ࢆ☜ㄆࡋࡓࠋࡲࡓᨺᑕ໬Ꮫศ㞳ࢆ⾜࠺ࡇ࡜࡛ࠊ230U ࡢ⏕ᡂࢆ☜ㄆࡋࡓࠋࡉࡽ࡟ࢪ࢙ࢿ࣮ࣞࢱ࣮ࢆసᡂࡋ࡚ 230U ࠿ࡽᡂ㛗ࡍࡿ 226Th ࠾ࡼࡧ 210Pb ࡟⮳ࡿࡲ࡛ࡢቯኚ࡟క࠺D⥺ࡢᨺฟࢆ☜ㄆࡋࡓࠋウㄽ఍࡛ࡣࠊࡇࢀࡽࡢᢏ⾡ⓗヲ⣽࠾ࡼࡧࠊ226Th ࢆ⏝࠸ࡓᶆ㆑໬ྜ≀ࡢᏳᐃᛶࡸፉ᰾✀ࡢᶆⓗෆಖᣢࡢホ౯࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋ

U

260

20.8 d

D: 5.8 MeV

Th D: 6.3 MeV

226

31 m

Ra

D: 6.6 MeV

Rn D: 7.1 MeV

Po

218

214

38 s

35 ms

164 PsFig. 1. Decay chain of

260

222

D: 7.7 MeV

Pb

210

22.3 yU

Preliminary evaluation for production & radiochemical separation of an D-emitting radionuclide, 230U
WASHIYAMA, K., TAKAHASHI, N., ARAKI, M., YOKOYAMA, A., SHINOHARA, A., AMANO, R.
− 80 −

1P26

ᐢፉᄢቇ∛㒮 18 MV ක≮↪㔚ሶ࡝࠾ࠕ࠶ࠢቶౝߦ߅ߌࠆਛᕈሶ᧤ߩ▗᡼኿ൻᴺ෸
߮ࠦࡦ࠮ࡦ࠻ࡆࠬߩ᡼኿ൻ㊂ߦࠃࠆ⹏ଔ

ᓼᄢ*$5‫ޔ‬ᓼᄢ4+࠮‫ޔ‬ᐢᄢ∛㒮⸻≮ᡰេㇱ‫ޔ‬㜞ࠛࡀ⎇‫ޔ‬ᷡ᳓ᑪ⸳ේሶജ ٤
㒋㑆⒤‫ޔ‬૒ἑථ਽‫ޔ‬ᄢ㊁ศ⟤‫ޔ‬ਛ᧛৻‫ᤩ↰⼾ޔ‬ᒄ‫ޔ‬㘵ፉ๺ᒾ‫ޔ‬ዊㄼ๺᣿㧘ᄢ⍹ᤩ༹5㧘᪊ᧄ๺⟵4‫੹ޤ⸒✜ޣ‬ᣣ㧘ක≮↪ዊဳടㅦེᣉ⸳ౝߢ↢ᚑߔࠆਛᕈሶ᧤ߩ⹏ଔᴺߦ㑐ߔࠆࠟࠗ࠼࡜ࠗࡦ
ߩ᭴▽߿‫ޔ‬ടㅦེᣉ⸳ౝߢߩ᡼኿ൻ⁁ᴫߦ㑐ߔࠆࠢ࡝ࠕ࡜ࡦࠬ೙ᐲߩᬌ⸛ߦߟ޿ߡ㧘᡼኿✢
቟ో▤ℂߩ┙႐߆ࠄ⼏⺰߇ⴕࠊࠇߡ޿ࠆ‫⎇ᧄߢ߹ࠇߎޕ‬ⓥࠣ࡞࡯ࡊߢߪ‫ޔ‬ක≮↪ዊဳടㅦེ
ᣉ⸳ౝߢ↢ᚑߔࠆᾲ෸߮ᾲᄖਛᕈሶߥࠄ߮ߦㅦਛᕈሶ᧤ࠍ‫ޔ‬㊄▗ࠍਥߣߒߚᄙ⒳㘃ߩ㊄ዻ▗ߦࠃࠆ᡼኿ൻᬌ಴ེࠍ↪޿ߚቯ㊂ಽᨆ㧔▗᡼኿ൻᴺ㧕ࠍㆡ↪ߒ‫ޔ‬ዊⷙᮨ᡼኿✢⊒↢ⵝ⟎૶↪
ᣉ⸳ߢߩਛᕈሶ᧤᷹ቯᴺߩᮡḰൻࠍ⋡ᜰߒߚၮ␆࠺࡯࠲ߩ⸃ᨆ࡮⫾Ⓧࠍⴕߞߡ߈ߚ1)‫੹ޕ‬࿁㧘ᣂߚߥ⺞ᩏኻ⽎ߣߥࠆ 18MVᄖㇱ᡼኿✢ᴦ≮↪㔚ሶ࡝࠾ࠕ࠶ࠢⵝ⟎㧔ක≮↪ߣߒߡᦨ㜞ࠛࡀ࡞ࠡ࡯ߦዻߔࠆዊⷙᮨ᡼኿✢⊒↢ⵝ⟎㧕ߢߩਛᕈሶ᧤᷹ቯ⚿ᨐߣ‫ޔ‬ᣉ⸳ౝߦ⸳⟎ߐࠇߡ޿ࠆ
ࠦࡦ࠮ࡦ࠻ࡆࠬ߿ᧄ૕ㇱຠ╬ߩ᡼኿ൻ⁁ᴫߦߟ޿ߡႎ๔ࠍⴕ߁‫ޕ‬‫ޣ‬ታ㛎‫੹ޤ‬࿁‫⺞ޔ‬ᩏߒߚ 18MV ᄖㇱ᡼኿✢ᴦ≮↪㔚ሶ࡝࠾ࠕ࠶ࠢⵝ⟎ߪ‫ޔ‬ᐢፉᄢቇ∛㒮╙ 1࡝࠾ࠕ࠶ࠢቶߩࡃ࡝ࠕࡦ␠⵾ CLINAC 2300C/D ߢ޽ࠆ‫ࠢ࠶ࠕ࠾࡝ޕ‬ቶౝਛᔃߦ૏⟎ߔࠆ㔚ሶ࡝࠾ࠕ࠶ࠢᧄ૕ߣߩ૏⟎㑐ଥࠍ⠨ᘦߒߥ߇ࠄ‫ޔ‬㊄▗ߩ▗᡼኿ൻᴺߢߪ 2 ᨎߩ▗㧔ฦෘߐ 0.1
mm㧕ࠍࠞ࠼ࡒ࠙ࡓ᧼㧔ෘߐ 1.0 mm㧕ߢⷒࠊࠇߡ޿ࠆ߽ߩߣⷒࠊࠇߡ޿ߥ޿߽ߩࠍ৻⚵㧔ࡐ࡝ࠛ࠴࡟ࡦⴼߥߤߦߪᪿ൮ߖߕ㧕ߣߒ‫ޔ‬ᴦ≮บਅ߿ࠟࡦ࠻࡝࡯ᧄ૕‫ޔ‬஥ო‫ޔ‬ㅅ〝╬‫ ⸘ޔ‬10 ࡩᚲߦ⸳⟎ߒߚ‫ޔߚ߹ޕ‬ㅦਛᕈሶ᷹ቯ↪ߣߒߡࠗࡦࠫ࠙ࡓ▗ߣࠕ࡞ࡒ࠾࠙ࡓ▗ߦߟ޿ߡ߽⸘ 3ࡩᚲߦ⸳⟎ߒߚ‫ޕ‬㊄ዻ▗ߩᾖ኿ᤨ㑆ߪ‫ޔ‬ᐔᣣ৻ᣣߩᄖㇱ᡼኿✢ᴦ≮ߩᾖ኿ᤨ㑆ާ2008 ᐕ 11
᦬ 7 ᣣ㧔㊄㧕ިߦวࠊߖߡⴕߞߚ‫ߩߘޕ‬ᾖ኿⚳ੌᓟ‫ޔ‬᡼኿ൻߒߚ㊄▗ࠍ HPGe ᬌ಴ེߦࠃࠆǫ✢ࠬࡍࠢ࠻ࡠࡔ࠻࡝࡯߆ࠄᾖ኿⚳ੌᤨߩ↢ᚑ᡼኿⢻ࠍ᳞߼‫ޔ‬ᾲ෸߮ᾲᄖਛᕈሶ᧤㧘ㅦਛᕈሶ᧤ࠍቯ㊂⹏ଔߒߚ‫ࠢ࠶ࠕ࠾࡝ޔߦࠄߐޕ‬ቶౝߩᲧセ⊛ኈᤃߦណขߢ߈ࠆࠦࡦ࠮ࡦ࠻ࡆࠬ㧔Ni
ࡔ࠶ࠠߩ⌀㎕᧚ Cu : Zn ѳ 6 : 3.5‫ޔ‬ㆊ෰⚂ 13 ᐕ㑆ߩ 18MV ᾖ኿㧕߆ࠄ᡼኿ൻ㊂ࠍ⺞ߴ㧘㊄▗ߢߩᾲਛᕈሶ᧤ߩ⚿ᨐߣᲧセᬌ⸛ߒߚ㧚߹ߚ‫⸃ߪ⟎ⵝᧄޔ‬૕෸߮ᦝᣂᤨᦼߦ޽ࠅ‫⺞ᧄޔ‬ᩏᤨߦ߅޿ߡ⸃૕⃻႐ߦ┙ߜ౉ࠆߎߣ߇ߢ߈ߚ‫ᧄߢߎߘޕ‬૕ߩㇱຠ╬ࠍ࿁෼ߒ‫ࡊࠣࡦࠫ࡯ࡔࠗޔ‬࡟࡯࠻㧔ን჻ࡈࠖ࡞ࡓ␠⵾ BAS-MS㧕ߦࠃࠆ᡼኿ൻ⁁ᴫߩนⷞൻ߽ⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ߦࠬࡆ࠻ࡦ࠮ࡦࠦޤ‬฽᦭ߔࠆ੝㋦ߩ64Zn(n,ǫ)65Znߢ↢ᚑߐࠇࠆ65Zn (T1/2 = 244.26 d) ߩ᡼኿⢻㊂߆ࠄᾲਛᕈሶ᧤ࠍ⹏ଔߒߚߣߎࠈ‫ ╙ޔ‬1 ࡝࠾ࠕ࠶ࠢቶౝ㧔ㅅ〝ㇱࠍ㒰ߊ‫ޕ‬㧕ߦ߅޿ߡ‫ޔ‬
4
4-2 -1
3.310 ~ 9.910 cm s ߩ▸࿐ߢಽᏓߒߡ޿ࠆߎߣ߇⏕⹺ߢ߈ߚ‫ߩߘޕ‬ಽᏓ௑ะߪ‫࠻ࡦࠟޔ‬࡝࡯ࡋ࠶࠼ߩ࿁ォゲߦု⋥ߥᐔ㕙ߦ૏⟎ߔࠆ஥ო㧔࿁ォゲ߆ࠄ 3.4㨙㔌ࠇߚᚲ㧕ߩᾲਛᕈሶ᧤
߇㜞ߊ‫⋥ုߩߘޔ‬㕙߆ࠄ㆙ߑ߆ࠆߦᓥߞߡૐߊ߆ߞߚ‫৻ޕ‬ᣇ‫ޔ‬ㅅ〝ㇱߢߩᾲਛᕈሶ᧤ߩ୯ߪ
ᬌ಴ਅ㒢㧔< ⚂ 5103 cm-2 s-1㧕ߢ޽ࠅ‫ޔ‬ㆤ⭁ოߩലᨐ߇⏕߆߼ࠄࠇߚ‫ޕ‬㊄▗ߦࠃࠆᾲਛᕈሶ
᧤ߩ⹏ଔ⚿ᨐߦߟ޿ߡߪ‫ߣࠬࡆ࠻ࡦ࠮ࡦࠦޔ‬ห᭽ߥ௑ะߢ޽ߞߚ‫࠼࠶ࡋ࡯࡝࠻ࡦࠟߦࠄߐޕ‬ߩ࿁ォⷺᐲᄌേߦ઻߁࿕ቯᾖ኿߆ࠄ‫⋥ޔ‬ធߩX✢㧔18MV㧕ᾖ኿ߦ઻߁197Au(ǫ,n)196Au෻ᔕߢ↢ᚑߔࠆ196Au (T1/2 = 6.183 d) ߩ᡼኿⢻ࠍ࿁ォゲߦု⋥ߥᐔ㕙਄ߩ஥ო෸߮ᄤ੗ߢ⏕⹺ߒߚ‫ޕ‬1) 㒋㑆⒤ઁ㧘ᣣᧄ᡼኿✢቟ో▤ℂቇળ⹹ ╙ 7 Ꮞ 2 ภ 138-147 (2008).

Estimation of neutron fluxes at the 18 MV medical electron liniac room in Hiroshima University Hospitalby an activation foil method and activation activities of the screws of wall sockets.
SAKAMA, M., SAZE, T., OHNO, Y., NAKAMURA, H., TOYODA, A., IIJIMA, K., KOSAKO, K., OISHI,
K., MASUMOTO, K.
− 81 −

1P27

᳓ṁᕈ᡼኿ᕈห૏૕ౝ൮ࡈ࡜࡯࡟ࡦߩวᚑ
╳ᵄᄢ㒮 ‫ޔ‬㚂ᄢ㒮 ‫ޔ‬ේሶജᯏ᭴  ٤ᧃᧁ໪੺ 1‫ޔ‬㐳ፒ⧐♿ 1‫ޔ‬਄มᥓ⟵ 1‫ޔ‬⑺ጊ๺ᒾ 2‫ޔ‬Ⴆ↰๺᣿ 3‫ޔ‬ᵻ੗㓷ੱ 3‫⼾ޔ‬᎑ෘผ 3‫ޔ‬᳗⋡⻀৻㇢ 3‫  ޤߦ߼ߓߪޣ‬᳓ṁᕈߩࡈ࡜࡯࡟ࡦൻว‛ߪ↢‛⑼ቇ߅ࠃ߮කቇಽ㊁ߢߩᔕ↪ߦ⥝๧߇ᜬߚࠇࠆ‛⾰ߢ޽ࠆ‫ޕ‬㊄ዻේሶࠍౝ൮ߒߚࡈ࡜࡯࡟ࡦ㘃ߦߟ޿ߡߪౝ൮ర⚛ࠍ᡼኿ᕈห૏૕ߦߔ
ࠆߎߣߦࠃࠅᣂߚߥᯏ⢻߇ਈ߃ࠄࠇࠆน⢻ᕈ߇޽ࠆ‫ߥ⊛⥸৻ޕ‬㊄ዻࡈ࡜࡯࡟ࡦߪ C82 ߥߤߩࡈ࡜࡯࡟ࡦߦౝ൮ߐࠇߡ޿ࠆߎߣ߇ᄙߊ‫ޔ‬ౝ൮ర⚛ࠍਛᕈሶ᡼኿ൻߔࠆߎߣߢ᡼኿ᕈห૏૕ࠍ
ዉ౉ߔࠆߎߣ߇น⢻ߢ޽ࠆ‫↢ޔߒ߆ߒޕ‬૕ౝߢߩ᜼േߥߤ߳ߩᔕ↪ߪ C60 ࠍਛᔃߦߒߚൻว‛߇ᄙߊ↪޿ࠄࠇߡ޿ࠆ੐߽޽ࠅߘߩᔕ↪ߦߪ C60 ߦ᡼኿ᕈห૏૕ࠍౝ൮ߐߖࠆߎߣߦࠃߞߡ
ᔕ↪ߪᦝߦᐢ߇ࠆߣ⠨߃ࠄࠇࠆ‫ࡦ࡟࡯࡜ࡈޕ‬㘃ߣ㉄ൻ‛ߥߤߩൻว‛ߣࠍᷙวߒߡ‫ޔ‬ടㅦེ
ߢ․ቯߩ᡼኿ᕈห૏૕ࠍวᚑߔࠆߣหᤨߦ෻〡ࠛࡀ࡞ࠡ࡯ࠍ೑↪ߒߡ‫ࡦ࡟࡯࡜ࡈޔ‬㘃ߦᛂߜ
ㄟ߻ᣇᴺߢ᡼኿ᕈห૏૕ౝ൮ࡈ࡜࡯࡟ࡦߩวᚑߩ⹜ߺ߇ᄢᮎࠄߦࠃߞߡᄙߊߩႎ๔ߐࠇߡ޿
ࠆ 1)‫⎇ᧄޕ‬ⓥߢߪ(p,n)෻ᔕߢวᚑߒߚ 75Se‫ޔ‬124Sb‫ޔ‬126I ࠍ C60 ߅ࠃ߮ C70 ߦዉ౉ࠍ⹜ߺ‫ޔ‬ขᛒ߇
ଢ೑ߥ 75Se@C60 ࠍ↪޿ߡ᳓㉄ၮࠍࡈ࡜࡯࡟ࡦ㛽ᩰߦዉ౉ߔࠆ᧦ઙࠍᣢሽߩ La@C82 ߅ࠃ߮
Sm@C82 ߥߤߣᲧセߒߚ 2)‫ޕ‬‫ޣ‬ታ㛎‫ ߩᧃ☳ ޤ‬C60 ߅ࠃ߮ C70 ߣ㉄ൻ‛ࠍ Al ࡈࠜࠗ࡞ߦ൮ࠎߛ⋥ᓘ 8 mm ߩ౞⋚⁁ߦ࿕߼ߚᾖ኿⹜ᢱࠍේ⑼⎇࠲ࡦ࠺ࡓടㅦེߢ㓁ሶ 13 MeV, 1 ǴA ߦߡ㧞ᤨ㑆ߩᾖ኿ࠍⴕߞߚ‫ޕ‬಄ළᓟ‫ޔ‬ᾖ኿⹜ᢱߪ CS2 ߢṁ⸃ߒߚᓟߦ 0.2 Ǵm ߩࡈࠖ࡞࠲࡯ࠍ↪޿ߡࠈㆊߒ‫ޔ‬ṁᇦࠍ o-ࠫࠢࡠࡠࡌࡦ࠯ࡦߦ⟎߈឵߃ߚ‫ޕ‬2$$ ࿕ቯ⋧ࠍ↪޿ߚ HPLC ዷ㐿ࠍⴕߞߚ‫ޔߦᦝޕ‬RI@C60 ߣ⠨߃ࠄࠇࠆಽ↹⹜ᢱࠍ Buckyprep ࿕ቯ⋧ߦࠢࡠࡠࡌࡦ࠯ࡦߢዷ㐿ߒߡṁ㔌᜼േࠍ⺞ߴߚ‫ޕ‬ਇ⚐‛ߩ㒰෰ࠍߒߚ 75Se@C60 ߩ࠻࡞ࠛࡦṁᶧ 2.5 ml ߦኻߒߡ‫ޔ‬㘻๺ KOH ᳓ṁᶧ 1 ml ߣ TBAH10%ṁ
ᶧ 3 Ṣࠍട߃ߡỗߒߊᝄߣ߁ߐߖߡൻቇ෻ᔕࠍ⿠ߎߐߖ‫ޔ‬᳓ṁᕈಽሶߩ෻ᔕᤨ㑆ߥߤߩวᚑ
᧦ઙࠍᬌ⸛ߒߚ‫ޕ‬140La@C82‫ޔ‬153Sm@C82 ߥߤߩᣢሽ㊄ዻౝ൮ࡈ࡜࡯࡟ࡦࠍਛᕈሶ᡼኿ൻߢᮡ
⼂ߒߚಽሶ߆ࠄߩวᚑ᧦ઙߣߩᲧセࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐ‫ ޤ‬ടㅦེߢ↢ᚑߒߚ᡼኿⢻㊂ߣHPLCዷ㐿ߒߡᓧࠄࠇߚRI@C60‫ޔ‬RI@C70ߩ᡼኿⢻㊂
߆ࠄ75Se ߅ࠃ߮124Sbߦߟ޿ߡߪ⚂1-2X10-4ߩഀวߢC60‫ޔ‬C70ߦขࠅㄟ߹ߖࠆߎߣ߇น⢻ߢ޽ࠆߎߣ߇᣿ࠄ߆ߦߥߞߚ‫ޕ‬2$$࿕ቯ⋧߳ߩ*2.%᜼േߪᣢႎߩ⚿ᨐߣ㕖Ᏹߦ৻⥌ߒߚ ‫߆ߒޕ‬ߒ‫ޔ‬126Iߦ㑐ߒߡߪṁ㔌᜼േ߇⇣ߥߞߡ޿ࠆߎߣ߇␜ߐࠇߚ‫ޕ‬75Se@C60ࠍ↪޿ߚ᳓㉄ၮߩ⺃ዉ૕ߩ↢ᚑߦߟ޿ߡߪ෻ᔕᤨ㑆߇⍴޿ߣSephadex G25ߦๆ⌕ߐࠇࠆᚑಽ߇ሽ࿷ߒ‫ޔ‬቟ቯߥ↢ᚑ‛ࠍᓧࠆߚ߼ߦߪ1ᤨ㑆એ਄ߩ෻ᔕᤨ㑆߇ᔅⷐߢ޽ࠆ੐߇᣿ࠄ߆ߦߥߞߚ‫ޕ‬෻ᔕᤨ㑆ߦࠃࠆฦ⋧߳ߩ᡼኿⢻ߩಽᏓߪ153Sm@C82ߩ⚿ᨐ2)ߣ⦟ߊ৻⥌ߒߡ޿ࠆ‫ޕ‬1) T. Ohtsuki et al., Phys. Rev. B, 60, 1531 (1999) and T. Ohtsuki et al., Phys. Rev. B 65, 073402(2002).
2) K. Sueki and Y. Iwai, J. Radianal. Nucl. Chem. 272 (2007) 505-509.
Synthesis of water-soluble encapsulated -radioiso tope fulleren es
SUEKI, K., NAGASAKI, Y., KAMITSUKASA, T., AKIYAMA, K., TSUKADA, K., ASAI, M.,
TOYOSHIMA, A., NAGAME, Y.
− 82 −

3
ࣆࣞࢽࣝᅛᐃ┦ࢆ⏝࠸ࡓࣛࣥࢱࣀ࢖ࢻ㔠ᒓࣇ࣮ࣛࣞࣥࡢ
+3/& ⁐㞳ᣲື࡟㛵ࡍࡿ◊✲㤳㒔኱㝔࣭⌮ᕤ ࠊ⟃Ἴ኱࣭㝔ᩘ⌮≀㉁  ‫⛅ۑ‬ᒣ࿴ᙪ ࠊྂᕝⱥ඾ 㰻⸨㝧༤ ࠊ℈㔝㐩⾜ ࠊᮎᮌၨ௓ ࠊ∦⏣ඖᕫ ࠙ࡣࡌࡵ࡟ࠚ㏆ᖺࠊࣇ࣮ࣛࣞࣥࡣᶵ⬟ᛶ≀㉁ࡢᮦᩱ࡜ࡋ࡚ᵝࠎ࡞ศ㔝࡛⏝࠸ࡽࢀࡿࡼ࠺࡟࡞
ࡗ࡚ࡁ࡚࠸ࡿࠋࡇࡢࣇ࣮ࣛࣞࣥ࡟㔠ᒓཎᏊࢆෆໟࡋ࡚࠸ࡿ㔠ᒓࣇ࣮ࣛࣞࣥࡣࡑࡢ≉␗࡞ศᏊᵓ㐀࡜㟁Ꮚ≧ែ࠿ࡽ⯆࿡῝࠸≀㉁ࡢ୍ࡘ࡛࠶ࡾ࡞ࡀࡽࠊ⏕ᡂ㔞ࡀ௦⾲ⓗ࡞ࣇ࣮࡛ࣛࣞࣥ࠶ࡿ& ࡟ẚ࡭  ௨ୗ࡜㠀ᖖ࡟ᑡ࡞࠸ࡓࡵࠊ༑ศ࡞◊✲ࡀ㐍ᒎࡋ࡚࠸ࡿ࡜ࡣゝ࠼࡞࠸≧ែ࡟࠶ࡿࠋࡇࡢࡼ࠺࡞ᑡ㔞ࡢ≀㉁ࡢᛶ㉁ࢆㄪ࡭ࡿୖ࡛ࠊヨᩱ࠿ࡽᨺฟࡉࢀࡿᨺᑕ⥺ࢆ᳨ฟᡭẁ࡜ࡍࡿࣛࢪ࢜ࢡ࣐ࣟࢺࢢࣛࣇ࢕࣮ࡣ㠀ᖖ࡟ᙉຊ࡞ᡭἲ࡛࠶ࡿ࡜ゝ࠼ࡿࠋᮏ◊✲࡛ࡣࣛࢪ࢜ࢡࣟ
࣐ࢺࢢࣛࣇ࢕࣮ࢆ⏝࠸࡚ࣆࣞࢽࣝᅛᐃ┦࡟࠾ࡅࡿ /D㹼*G ࡲ࡛ࡢࣛࣥࢱࣀ࢖ࢻඖ⣲ࢆෆໟࡋࡓ㔠ᒓࣇ࣮ࣛࣞࣥ 0#& ࡢ⁐㞳ᣲື࠿ࡽࠊࡑࢀࡒࢀࡢ 0#& ࡢᣢࡘ཮ᴟᏊ࣮࣓ࣔࣥࢺࢆゎᯒⓗ࡟ồࡵࡓࡢ࡛ሗ࿌ࡍࡿࠋ
࠙ᐇ㦂ࠚ㔠ᒓෆໟࣇ࣮ࣛࣞࣥࢆྵࡴࢫࢫࡣ 5 ✀㢮ࡢࣛࣥࢱࣀ࢖ࢻ㸦LaࠊCeࠊPrࠊNdࠊGd㸧ࢆΰྜࡋࡓⅣ⣲Წࢆ㟁ᴟ࡜ࡋࠊHe 㞺ᅖẼࠊᅽຊ 500 TorrࠊDC50 A ࡢ᮲௳࡛࢔࣮ࢡᨺ㟁ࢆ⾜࠸ྜᡂࡋࡓࠋࡇࡢࢫࢫ࠿ࡽ 1,2,4-ࢺࣜࢡࣟࣟ࣋ࣥࢮࣥ࡟ࡼࡗ࡚ᢳฟࡋࡓࣇ࣮ࣛࣞࣥᡂศࢆ᪥
ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓ㸦JAEA㸧ࡢ JRR-3M HR-1 Ꮝ㸦flux: 9.6×1013 n/cm2㺃sec㸧ཬࡧ PN-1
㸦flux: 5.2×1013 n/cm2㺃sec㸧࡟࠾࠸࡚ࡑࢀࡒࢀ 6 ᫬㛫ཬࡧ 20 ศ㛫⇕୰ᛶᏊ↷ᑕࢆ⾜ࡗࡓࠋࡇࡢᨺᑕ໬ヨᩱࢆ Pyrenyl ᅛᐃ┦ࡢ Buckyprep ࣒࢝ࣛ࡬ὶ㏿ 3.2 mL/min ࡛ࢺ࢚ࣝࣥᒎ㛤ࡋࡓࠋ⁐ฟᡂศࢆ 20 ⛊ࡈ࡜࡟ศ⏬ࡋࠊྛศ⏬ࡼࡾᨺฟࡉࢀࡿJ⥺ࢆ㧗⣧ᗘ Ge ༙ᑟయ᳨ฟჾ࡟࡚
ᐃࡋࠊྛ M@C82 ᡂศࡢಖᣢ᫬㛫ࢆㄪ࡭ࡓࠋ

㻌㻾㼑㼘㼍㼠㼕㼢㼑㻌㻭㼏㼠㼕㼢㼕㼠㼥

0#&࠙⤖ᯝཬࡧ⪃ᐹࠚᅗࡣ %XFN\SUHS ᒎ㛤࡟࠾ࡅࡿ 0#& ࡢ +3/& ⁐㞳ᣲືࢆ♧ࡋ࡚࠸ࡿࠋ
ࡢಖᣢ᫬㛫ࡣࡑࢀࡒࢀ /D㸸ࠊ&H㸸ࠊ3U㸸ࠊ1G㸸ࠊ*G㸸 ࡛࠶ࡗࡓࠋ+3/&ࡢಖᣢ᫬㛫ࡣᅛᐃ┦࡜⁐㉁ศᏊ࡜ࡢ࠶ࡿ✀ࡢᖹ⾮཯ᛂ࡜ぢ࡞ࡍࡇ࡜ࡀ࡛ࡁࠊಖᣢ᫬㛫࡜⮬⏤࢚ࢿࣝࢠ࣮࡜ࡢ
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ࡇࡇ࡛ࠊ, ࡣ࢖࢜ࣥ໬࣏ࢸࣥࢩࣕࣝࢆDࡣศᴟ⋡ࠊU ࡣ 0#& ࡢ㔜ᚰ࡜ᅛᐃ┦ࡢᖹᆒࣇ࢓ࣥࢹ࣮ࣝ࣡ࣝࢫ㊥㞳ࢆ♧ࡋ࡚࠸ࡿࠋྛࣃ࣓࣮ࣛࢱ࡟࠾ࡅࡿῧ࠼Ꮠࡣ  ᅛᐃ┦ࠊ0#& ࡢࡶࡢ࡛࠶ࡿࡇ࡜ࢆ♧ࡍࠋ

6WXG\RQ+3/&(OXWLRQ%HKDYLRURI/DQWKDQLGH0HWDOORIXOOHUHQHV8VLQJ3\UHQ\O6WDWLRQDU\3KDVH$.,<$0$.)858.$:$+6$,72$+$0$12768(.,..$7$'$0− 83 −

− 84 −

1P30

㧞㧙ࡅ࠼ࡠࠠࠪࠗ࠰㈼㉄ࠗࠝࡦࠍ߽ߟ࠙࡜ࡦ ㍲૕ߩวᚑߣ᭴ㅧ

㒋ᄢ㒮ℂ ٤ศ᧛ፏ㧘⩵᳗⧷ኼ㧘◉ේෘ‫ ޤߦ߼ߓߪޣ‬ᚒ‫ ޔߪޘ‬㧙ࡅ࠼ࡠࠠࠪࠗ࠰㈼㉄ࠗࠝࡦ ࠍ㍲ᒻᚑ೷ߦ↪޿ߡ࡜ࡦ࠲ࡁ
ࠗ࠼ߣࠕࠢ࠴ࡁࠗ࠼ߩಽ㔌᜼േߣಽ㔌ߩ㓙ߩൻቇ⒳ߣߩ㑐ଥࠍ⎇ⓥߒߡ޿ࠆ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬߇㈩૏ߒߚ࠙࡜࠾࡞㍲૕ࠍᣂߚߦวᚑߒ‫ޔ‬㨄✢⚿᥏᭴ㅧ⸃ᨆߦࠃࠅ‫ߩߘޔ‬᭴ㅧࠍ․ቯߒߚ‫ޕ‬‫ޣ‬ታ㛎‫ ޤ‬㈶㉄࠙࡜࠾࡞  ,(   ,,.+ߣㆊ೾㊂ߩ 㧙ࡅ࠼ࡠࠠࠪࠗ࠰㈼㉄   ,(  ,,.+ࠍ  , ߩ᳓ߦᷙวߒ‫ޔ‬ቶ᷷ߢᢙᣣ㑆᡼⟎ߒߚߣߎࠈ‫ޔ‬㤛⦡ߩන⚿᥏߇ᓧࠄࠇߚ‫ߎޕ‬ߩ⚿᥏ߦߟ޿ߡ‫ޔ‬㨄✢߅ࠃ߮⿒ᄖๆ෼ࠬࡍࠢ࠻࡞᷹ቯࠍⴕߞߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ ޤ‬࿑㧝ߦ࠙࡜ࡦ๟࿐ߩ㈩૏᭴ㅧࠍ␜ߔ‫  ߪࡦ࡜࠙ޕ‬㈩૏ߢ੖ⷺਔ㍙ᒻ᭴ㅧࠍߣߞߡ޿ࠆ‫࡞ࡖࠪࠠࠕߩࡦ࡜࠙ޕ‬૏ߦߪ‫߇࠰ࠠࠝߩߟ ޔ‬㈩૏ߒ ߪ   6 ߣ߶߷⋥✢ߦߥߞߡ޿ߚ‫࡞ࠕ࡝࠻ࠞࠛޕ‬૏ߦߪ‫ޔ‬㧙ߩ ߟߩ㉄⚛ේሶ߇㈩૏ߒߡ޿ࠆ‫ޕ‬㧙ߪߟߩ࠙࡜࠾࡞ࠍࠞ࡞ࡏࠠࠪ࡞ၮߢ᨞ᯅߒࡅ࠼ࡠࠠࠪၮߪ㕖㈩૏ߩ߽ߩߣ‫ߦ࡞࠾࡜࠙ߩߟ৻ޔ‬ࠞ࡞ࡏࠠࠪ࡞ၮߣࡅ࠼ࡠࠠࠪၮߢࠠ࡟࡯࠻ߒ‫࡞ࠪࠠࡏ࡞ࠞߦࠄߐޔ‬ၮߩ৻ߟߩ㉄⚛ේሶ߇㓞ធߔࠆ࠙࡜࠾࡞ߦ᨞ᯅߒߚ߽ߩߩ ⒳㘃߇ሽ࿷ߒߡ޿ࠆ‫࡞ࡖࠪࠠࠕޕ‬૏ߩ㉄⚛ේሶߣߩ ⚿ว〒㔌ߪ‫   ߮ࠃ߅  ޔ‬7 ߢ৻⥸⊛ߥ  ㊀⚿วߣ߶߷ห᭽ߢ޽ߞߚ‫ޔߚ߹ޕ‬ࠛࠞ࠻࡝ࠕ࡞૏ߩ㉄⚛ේሶߣߩ⚿ว〒㔌ߪ     7 ߢ‫ ޔ‬න⚿วߩ〒㔌ߢ޽ࠆ߇‫ࠪࠠࡠ࠼ࡅߣࡦ࡜࠙ޔ‬ၮߩ㉄⚛ේሶߣߩ⚿ว〒㔌ߪ   7 ߣ㐳޿ߎߣ߆ࠄ‫ࡅߩޔ‬࠼ࡠࠠࠪၮߪ⣕ࡊࡠ࠻ࡦൻߖߕߦ㈩૏ߒߡ޿ࠆߎߣ߇␜ໂߐࠇࠆ‫ޕ‬࿑㧞ߦߎߩ㍲૕ߩࡀ࠶࠻
ࡢ࡯ࠢ᭴ㅧࠍ␜ߔ‫ޕ‬਄⸥ߩࠃ߁ߦ ߟߩ ߇࠙࡜࠾࡞ࠍ᨞ᯅߔࠆߎߣߦࠃࠅ‫ ޔ‬ᰴరࡂ࠾ࠞࡓᒻ᭴ㅧࠍߣߞߡ޿ࠆ‫ޕ‬⿒ᄖๆ෼ࠬࡍࠢ࠻࡞ߪ‫   ߮ࠃ߅  ޔ‬$, ߦࠞ࡞ࡏࠠࠪ࡞ၮߦ↱᧪ߔࠆિ❗ᝄേ߇᷹ⷰߐࠇߚ‫ޕ‬ߎࠇߪ‫ޔ‬᨞ᯅ߅ࠃ߮᨞ᯅࠠ࡟࡯࠻㈩૏ߒߚ ⒳㘃ߩ ߦࠃࠆ߽ߩߣ⠨߃ࠄࠇࠆ‫ޕ‬࿑  ㍲૕ߩࡀ࠶࠻ࡢ࡯ࠢ᭴ㅧ࿑  ㍲૕ߩ᭴ㅧ ᧄ⊒⴫ߪ㧘․೎ળ⸘ߦ㑐ߔࠆᴺᓞ㧔ࠛࡀ࡞ࠡ࡯ኻ╷․೎ળ⸘㧕ߦၮߠߊᢥㇱ⑼ቇ⋭߆ࠄߩฃ⸤੐ᬺߣߒߡ㧘࿖┙ᄢቇᴺੱᄢ㒋ᄢቇ߇ታᣉߒߚᐔᚑ㧞㧜ᐕᐲ‫ޟ‬ౣಣℂࠪࠬ࠹ࡓߦะߌߚ
ᩭಽⵚ↢ᚑ‛ߩ㜞ല₸ಽ㔌࡮ಽᨆᴺߩ㐿⊒‫ߩޠ‬ᚑᨐߢߔ‫ޕ‬5-2)&1*1"-%203$230&.'0"-5+ .,/+&4.-2"*-*-( 5%0.45*1.#3250"2& !
− 85 −

1P31

+=387/A-2+71/,/2+?38;80(;0+7.$237 #!  ! 63A/.<85>=387<C=8@+;.<=8<=>.B87<>50+=/-8695/A+=38780 "0
.?+7-/.#-3/7-/"/</+;-2/7=/;+9+7=863-7/;1B1/7-B  ٤(  $!'!#   $#%   #  $  #$!  $ %     
#$! ' 

‫ޣ‬7=;8.>-=387‫&ޤ‬/2+?/<80+;<=>.3/.=2/-258;3./73=;+=/+7.05>8;3./-8695/A+=387<80"0=@+<08>7. =2+= "0 ,/2+?/< 534/ =2/ 1;8>9  /5/6/7=< (; +7. 0 37 5 +7.  !  ,>= 78= 534/ =2/9</>.82868581>/ $2 -8703;6371 =2+= "0 3< 87/ 6/6,/; 80 =2/ 1;8>9  /5/6/7=< $2/ +.<8;9=387
<=;/71=2 87 =2/ +7387/A-2+71/; 37.3-+=/. =2+= =2/ +00373=B 80 =2/ 5 387 =8 =2/ 1;8>9  /5/6/7=<./-;/+</< +< "0  (;  0 !7 =2/ 8=2/; 2+7. 3= @+< 08>7. =2+= 387/A-2+71/ ,/2+?38; 80 "0 3<<317303-+7=5B .300/;/7= 0;86 =2+= 80 (; +7. 0 37  +7. 37  !  63A/. <85>=387<+7. =2+= =2/05>8;3./-8695/A+=38780"03<;/6+;4+,5B@/+4/;=2+7=2+=80(;+7.0$2/<>50+=/387#! 3<+<=;871-8695/A371+1/7=08;=2/1;8>9 /5/6/7=<$2/<=+,353=3/<80(;+7.0-8695/A/<08;6/.@3=2
=2/?+;38><378;1+73-531+7.<./-;/+</37=2/8;./;80#! 5  ! $2/;/08;/3=3<801;/+=
37=/;/<==837?/<=31+=/=2/9;89/;=3/<80"0<>50+=/-8695/A/<,B-869+;371=2/6@3=2=28</80(;+7.
0<>50+=/-8695/A/<7=23<@8;4-+=387/A-2+71/,/2+?38;80(;0+7.$237=2/ #!  !
63A/.<85>=387<+=)*  +7.)#! *  D  2+<,//7<=>.3/.,B+,+=-26/=28.><371
=2/-+;;3/;0;//;+.38=;+-/;< (; 0+7. $2!7537/-2;86+=81;+923-,/2+?38;80(;+7.02+<+5<8,//7<=>.3/.,B+;+93.-2/63-+5</9+;+=387+99+;+=>< 663.D 6663-;8-85>67=8
/A+637/;/+-=387437/=3-<+7.=2/7=8037.8>=+99;89;3+=/-87.3=387<08;=2/<=>.B80"0 d

K / mL g-1

Ǐ"/<>5=<+7..3<-><<387ǐ31>;/ <28@<=2/?+;3+=38780=2/.3<=;3,>=387-8/003-3/7=<K.<80(;0+7.$287=2/-+=387/A-2+71/;+<+0>7-=38780)#! *37=2/ #!  ! 63A/.<85>=387<+=)* =-+7,/<//7=2+==2/+.<8;9=387</:>/7-/87=2/;/<373<$20(;-8703;6371=2+=(;2+< + <=;871/; +,353=B =8 08;6 <>50+=/ -8695/A/< =2+7 0 +7. $2 $2/ K. ?+5>/< 80 =2/</ /5/6/7=<
1;+.>+55B ./-;/+</ @3=2 )#! * ;/05/-=371 <>--/<<3?/ 08;6+=387 80 <>50+=/ -8695/A/< >;=2/;
+7+5B<3<80=2/<589/<+=/+-2)#! *<28@<=2+=#!  +7.#!  (;0+7.$2+;/=2/.8637+7= +:>/8>< <9/-3/< 37      )#! * $2/ K. ?+5>/< 80 (; +7. 0 6/+<>;/. 0;86 =2/87537/-2;86+=81;+6<+;/+5<8.;+@73731 ,B
105
88
Zr Batch Exp.
=2/;/<9/-=3?/-58</.<B6,85<=-+7,/<//7=2+=
175
104
Hf Batch Exp.
=2/ K. ?+5>/< 80 0 8,=+37/. 37 =2/ ,+=-2 +7.85
Zr Column Exp.
169
103
87537/ /A9/;36/7=< +;/ 37 188. +1;//6/7=
Hf Column Exp.
243
Th Batch Exp.
37.3-+=371 =2/ +-23/?/6/7= 80 -2/63-+52
10/:>353,;3>6 &235/ =2/ K. ?+5>/< 80 (; 0;86 =2/1
1087537/ /A9/;36/7=< +;/ <6+55/; =2+7 =28</ 0;86
[H+] = 1.0 M
100 -3=2/,+=-287/<37.3-+=371=2+==2/;/+-=387437/=3-<
10
10-2
10-1
100
[ HSO ] / M
80(;3<<86/@2+=<58@=)#! *  D  
4
=2/ 581 K. ?+5>/< 537/+;5B ./-;/+</. @3=2 +7 31 $2/?+;3+=38780=2/K.<80(;0+7.$287
37-;/+</80581)*+==;3,>=/.=8=2/.3<95+-/6/7= =2/ -+=387/A-2+71/; +< + 0>7-=387 80 )#! * 37
 #!  ! 63A/.<85>=387<+=)*  80=2/</6/=+5387<0;86=2/;/<37,B
+=387/A-2+71/,/2+?38;80(;0+7.$237 #!  !  63A/. <85>=387< C=8@+;.<=8<=>.B87
<>50+=/-8695/A+=38780 "0(   $!'!#  $#%  # $  #$! $ %  #$! '

− 86 −

 ࢆᶍᨃࡋࡓྠ᪘ඖ⣲  ࡞ࡽࡧ࡟  ࡢ  㘒ᙧᡂ‫⳥ۑ‬ụ㈗ᏹ 㸪㇏ᔱཌྐ -㸪ᮤᏊᮽ -㸪ሯ⏣࿴᫂ -㸪ὸ஭㞞ே -㸪బ⸨ဴஓ -㸪Ⲉᇛ኱㝔⌮ᕤ 㸪ཎᏊຊᶵᵓඛ➃◊ -㸪⌮◊ோ⛉ࢭ .㸪୰ᅜ㏆௦≀⌮◊ / బ⸨ᮃ -㸪Ọ┠ㅍ୍㑻 -㸪➟ᯇⰋᓫ .㸪 ,, /࠙ࡣࡌࡵ࡟ࠚཎᏊ␒ྕ 01/ ௨ୖࡢ㉸࢔ࢡࢳࣀ࢖ࢻඖ⣲ ࠶ࡿ࠸ࡣ㉸㔜ඖ⣲ ࡟ࡘ࠸࡚ࡢ໬Ꮫⓗᛶ㉁ࡣ㸪ࡑࡢ▷࠸༙ῶᮇ࡜᰾཯ᛂ⏕ᡂ⋡ࡢపࡉᨾ࡟໬Ꮫᐇ㦂ࡀᅔ㞴࡛㸪ᮍࡔ୙᫂࡞㒊ศࡀከ࠸ࠋࡉࡽ࡟㸪ࡇࡢ㡿ᇦ࡛ࡣ┦ᑐㄽⓗຠᯝ࡟ࡼࡾ㸪ࡑࡢඖ⣲ࡢ࿘ᮇᛶ࠿ࡽ㐓⬺ࡋࡓᛶ㉁ࡀ⌧ࢀࡿ࡜ண᝿ࡉࢀ࡚࠸ࡿࠋཎᏊຊᶵᵓ㉸㔜ඖ⣲᰾໬Ꮫ◊✲ࢢ࣮ࣝࣉ࡟ࡼࡿ᭱㏆ࡢ◊✲࡛ࡣ㸪࿘ᮇ⾲➨㸲᪘࡟఩⨨ࡍࡿ 01/ ␒ඖ⣲ࣛࢨ࣮࣍ࢪ࣒࢘  ࡢࣇࢵ໬≀ᙧᡂࡀྠ᪘ඖ⣲  ࡞ࡽࡧ࡟ ࡢᛶ㉁࡜ࡣ኱ࡁࡃ␗࡞ࡿࡇ࡜ࢆᐇ㦂࡛☜ㄆࡋ࡚࠸ࡿࠋᮏ◊✲࡛ࡣ㸪ࡇࡢ➨㸲᪘ඖ⣲ࢆࡉࡽ࡟⣔⤫ⓗ࡟⌮ゎࡍࡿࡓࡵ㸪㔠ᒓ࢖࢜ࣥࡢ㟁Ⲵࡸ࢖༙࢜ࣥᚄ࡟౫Ꮡࡋࡓ㘒ᙧᡂࢆࡍࡿȘࣄࢻࣟ࢟ࢩ࢖ࢯ㓗㓟  ࢆ⏝࠸࡚㸪㝧࢖࢜ࣥ஺᥮ἲ࡟ࡼࡾ  ࡞ࡽࡧ࡟  ࡢ  㘒యᙧᡂࢆㄪ
࡭ࡓࠋࡲࡓ௒ᚋࡢཎᏊຊᶵᵓࢱࣥࢹ࣒ຍ㏿ჾ᪋タࢆ฼⏝ࡋࡓ  ࡢ࢜ࣥࣛ࢖ࣥᐇ㦂࡬ࡢ᳨ウࢆ⾜ࡗࡓࠋ࠙ᐇ㦂ࠚㄪᩚࡋࡓ㝧࢖࢜ࣥ஺᥮ᶞ⬡$ *+& 12" 01 3 -11 㸪ᨺᑕᛶࢺ࣮ࣞࢧ࣮422056
 ࢆ⁐ゎࡋࡓ 103-7$)!. Ỉ⁐ᾮ618&㸪ཬࡧ 9)!. ΰྜỈ⁐ᾮ-:618& ࢆ㐲ỿ⟶ෆ࡛ΰྜࡋ㸪-6Υ࡛᣺࡜࠺ࡋࡓࠋ┠ⓗ᫬㛫ࡲ࡛᣺࡜࠺ᚋ㸪ヨᩱࢆ㐲ᚰศ㞳ࡋ㸪ୖ⃈ࡳࢆศྲྀࡋ࡚Ț⥺ ᐃ࡟ࡼࡾศ㓄ಀᩘ  ್ࢆᚓࡓࠋ ࡞ࡽࡧ࡟  ࡢ  㘒ᙧᡂࡢᖹ⾮฿㐩᫬㛫ࢆ᣺࡜࠺᫬㛫ࢆኚ໬ࡉࡏ࡚ㄪ࡭ࡓࠋࡲࡓ  ್࡜;<=࡞ࡽࡧ࡟;=ࡢ㛵ಀࡶồࡵࡓࠋ9 &0࠙⤖ᯝࠚ ࡞ࡽࡧ࡟  ࡢ  ࡜ࡢ㘒ᙧᡂࡢᖹ⾮฿㐩᫬㛫ࡣ࠾ࡼࡑ 021 ศ࡛࠶ࡾ㸪ࡲࡓ ್ࡢኚ໬࠿ࡽ  ࡣ࡯ࡰྠᵝࡢᣲືࢆ♧ࡍࡇ࡜ࡀࢃ࠿ࡗࡓࠋୗᅗࡣࡇࡢᖹ⾮᫬࡟࠾ࡅࡿ ್ࢆỈ⁐ᾮ୰ࡢ;=ࡢኚ໬࡟ᑐࡋ࡚ࣉࣟࢵࢺࡋࡓࡶࡢ࡛࠶
22
ࡿࠋ;=ࡢቑຍ࡟కࡗ࡚㸪
056

01 .
࡞ࡽࡧ࡟  ࡢ  ್ࡀῶᑡࡋ࡚࠸
ࡿࡇ࡜࠿ࡽ㸪㝧࢖࢜ࣥ㘒యࡢ㏲ḟ
ᙧᡂ཯ᛂࡀ㉳ࡁ࡚࠸ࡿ࡜⪃࠼ࡽ
01 ࢀࡿࠋࡉࡽ࡟ࠊᖹ⾮᫬࡟࠾ࡅࡿ ್ࡢኚ໬ࢆΰྜỈ⁐ᾮ୰ࡢỈ⣲࢖࢜ࣥ⃰ᗘࡢኚ໬࡟ࡘ࠸࡚ㄪ
01 0
01 6
01 /
࡭ࡿࡇ࡜࡛ࠊ⁐Ꮡ㘒యࡢ໬Ꮫ✀ࢆ; =9$᥎ᐃࡋࡓࠋⓎ⾲࡛ࡣࠊ⁐Ꮡ໬Ꮫ✀ᅗ 11010$910$)!
.ΰྜỈ⁐ᾮ୰࡛ࡢ
22056ࡸ࢜ࣥࣛ࢖ࣥᐇ㦂࡬ࡢ㐺⏝ᛶࡶ㝧࢖࢜ࣥ஺᥮ᶞ⬡࡬ࡢ ࡜ ࡢศ㓄ಀᩘ ್ ࡜ྵࡵ࡚㆟ㄽࡍࡿࠋ
࢖࢜ࣥ⃰ᗘࡢ㛵ಀ ᣺࡜࠺᫬㛫021ศ


   
  !"!#$%%&' #%(%%#%$#% ! #% !))%*%$+"
%#%$% #",%),&− 87 −

1P33

౑⏝῭᰾⇞ᩱࡢศᯒ࡟ྥࡅࡓᾮయࢩࣥࢳ࣮ࣞࢩ᳨ࣙࣥฟჾࡢᇶ♏㛤Ⓨ㜰኱㝔⌮ ‫⳥ۑ‬Ọⱥᑑ㸪ྜྷᮧᓫ㸪⠛ཎཌ࠙ࡣࡌࡵ࡟ࠚ ᡃࠎࡣ᰾⇞ᩱ෌ฎ⌮ࢩࢫࢸ࣒ྥࡅ࡟㸪᰾ศ⿣⏕ᡂ≀ࡢ୰࡛ࡶศ㞳ࡀᅔ㞴࡞ࣛࣥࢱࢽࢻ࠾ࡼࡧ࢔ࢡࢳࢽࢻࢆᑐ㇟࡟࢟ࣕࣆ࣮ࣛࣜ㟁ẼὋືἲࢆ⏝࠸࡚㎿㏿࡟ศ㞳࣭ศᯒࡍࡿ
ᡭἲࢆ㛤Ⓨࡋ࡚ࡁ࡚࠸ࡿࠋᮏ◊✲࡛ࡣ࢟ࣕࣆ࣮ࣛࣜ㟁ẼὋື⿦⨨࡜ᾮయࢩࣥࢳ࣮ࣞࢩ᳨ࣙࣥ
ฟჾࢆ᥋⥆ࡋ㸪࢜ࣥࣛ࢖࡛ࣥ౑⏝῭᰾⇞ᩱࢆศᯒ࡛ࡁࡿ୍㐃ࡢ⿦⨨ࡢ㛤Ⓨࢆ┠ᣦࡋ࡚㸪Ș/ș⢏Ꮚᘚู⬟ࢆᣢࡗࡓᾮయࢩࣥࢳ࣮ࣞࢩ᳨ࣙࣥฟჾࢆసᡂࡋ㸪ᇶ♏ࢹ࣮ࢱࢆྲྀᚓࡋࡓࡢ࡛ሗ࿌ࡍ
ࡿࠋ࠙ᐇ㦂ࠚ ௒ᅇసᡂࡋࡓᾮయࢩࣥࢳ࣮ࣞࢩ᳨ࣙࣥฟჾࡣග㟁Ꮚቑಸ⟶࡟὾ᯇ࣍ࢺࢽࢡࢫᰴᘧ
఍♫〇ࡢ R331-05㸪ࢹ࢕ࣞ࢖ࣛ࢖ࣥቑᖜჾ࡟ ORTEC 〇 460㸪ධຊἼ㧗ศᯒჾ࡟ ORTEC 〇 552㸪᫬㛫ᕪἼ㧗ኚ᥮ჾ࡟ ORTEC 〇 567 ࢆ⏝࠸ࡓࠋADC ࡣᒾ㏻ィ 〇ࡢ A3100 ࢆ⏝࠸࡚㸪࢚ࢿࣝࢠ࣮᝟ሗ࡜⺯ගᑑ࿨᝟ሗࢆྠ᫬࡟グ㘓ࡋࡓࠋ ࡲࡎ㸪ࣃ࢖ࣞࢵࢡࢫ࢞ࣛࢫ⟶(10 mmȭ75 mm)࡟Ș⥺ᨺฟ᰾✀࡜ࡋ࡚ 241Am, ș⥺ᨺฟ᰾✀࡜ࡋ࡚ 152Eu ࢆྵࢇࡔ 0.0128 M PBBO/1.57 M naphthalene/0.18 M HDEHP ̽ toluene ⁐ᾮ(HDEHP ᢳฟࢩࣥࢳ࣮ࣞࢱ) 1 mL ࢆᑒධࡋࡓヨᩱࢆ⏝࠸࡚Ș/ș⢏Ꮚᘚู⬟ࡢࢸࢫࢺࢆ⾜ࡗࡓࠋḟ࡟㸪Ș⥺ᨺฟ᰾✀࡜ࡋ࡚ 226Ra ࡜ࡑࡢፉ᰾✀ࢆྵࢇࡔ HDEHP ᢳฟࢩࣥࢳ࣮ࣞࢱ⁐ᾮࢆྠᵝ࡟ ᐃࡋ㸪࢚ࢿࣝࢠ࣮ศゎ⬟ࡢホ౯ࢆ⾜ࡗࡓࠋ ࢜ࣥࣛ࢖ࣥ໬ࡢ๓ẁ㝵࡜ࡋ࡚㸪U Ꮠᆺࡢ࢞ࣛࢫࢭࣝࢆసᡂࡋ㸪㐃⥆㏦ᾮࡋࡓ≧ែ࡛ᾮయࢩ
ࣥࢳ࣮ࣞࢩࣙࣥ ᐃࡍࡿࡇ࡜ࢆヨࡳࡓࠋࢩࣥࢳ࣮ࣞࢱࡣ࢟ࣕࣆ࣮ࣛࣜ㟁ẼὋືᚋࡢヨᩱࢆᐃࡍࡿࡇ࡜ࢆ⪃៖ࡋ࡚ங໬ࢩࣥࢳ࣮ࣞࢱ㸦Ultima Gold AB, PerkinElmer ♫〇㸧ࢆ⏝࠸ࡓࠋ2 ྎࡢᾮయࢩࣥࢳ࣮ࣞࢩ᳨ࣙࣥฟჾࢆ 20 cm ࡢࢸࣇࣟࣥࢳ࣮ࣗࣈ࡛㐃⤖ࡋ㸪241Am ࠾ࡼࡧ 152Eu ࢆྵࢇࡔங໬ࢩࣥࢳ࣮ࣞࢱࢆ 700 PL/min ࡛ 30 ⛊ὶࡋ㸪⥆࠸࡚ᨺᑕ⬟ࢆྵࡲ࡞࠸ங໬ࢩࣥࢳࣞ
࣮ࢱࢆྠࡌὶ㏿࡛ὶࡋ࡞ࡀࡽ㸪ྛ᳨ฟჾࡢィᩘࢆࣜࢫࢺ࣮ࣔࢻ࡛グ㘓ࡋࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ 241Am-152Eu ヨᩱࢆ ᐃࡋࡓ࡜ࡁࡢ࢚ࢿࣝࢠ࣮᝟ሗ࡜⺯ගᑑ࿨᝟ሗࡢ 2 ḟඖࢫ࣌ࢡࢺࣝࢆ Fig. 1 ࡟♧ࡍࠋȘ⥺⏤᮶ࡢィᩘ࡜ࡑ
241
Am ⏤᮶ࡢィᩘࢀ௨እࡀ᫂☜࡟ศ࠿ࢀ࡚࠾ࡾ㸪ィᩘຠ⋡ࡣ 99.6%
࡛࠶ࡗࡓࠋࡲࡓ㸪226Ra ⥺※ࢆ⏝࠸࡚ ᐃࡋࡓศゎ⬟ࡣ㸪FWHM = 192 keV (4784 keV)㸪395 keV(7687 keV)࡛࠶ࡗࡓࠋ 㐃⥆㏦ᾮࡋࡓ≧ែࡢᾮయࢩࣥࢳ࣮ࣞࢩࣙࣥ
ᐃ࡛ࡣྛ᳨ฟჾ㛫ࡢ㊥㞳࡟┦ᙜࡋࡓ᫬㛫ᕪ࡛
241

Am, 152Eu ࡢᨺᑕ⥺ࡀ᳨ฟࡉࢀࡓࠋࡋ࠿ࡋ㸪㏦ᾮ୰

Fig. 1. ࢚ࢿࣝࢠ࣮᝟ሗ vs.⺯ගᑑ࿨᝟ሗࡢ

ࡢࢸ࣮ࣜࣥࢢࡀᙉࡃ㉳ࡇࡗ࡚࠾ࡾప⢓ᛶࡢࢩࣥࢳ

2 ḟඖࢫ࣌ࢡࢺࣝ

࣮ࣞࢱࢆ⏝࠸ࡿ➼ࡢᨵⰋࡀᚲせ࡜⪃࠼ࡽࢀࡿࠋ
 ᮏⓎ⾲ࡣ㸪≉ู఍ィ࡟㛵ࡍࡿἲᚊ㸦࢚ࢿࣝࢠ࣮ᑐ⟇≉ู఍ィ㸧࡟ᇶ࡙ࡃᩥ㒊⛉Ꮫ┬࠿ࡽࡢཷク஦ᴗ࡜ࡋ࡚㸪ᅜ❧኱Ꮫἲே኱㜰኱Ꮫࡀᐇ᪋ࡋࡓᖹᡂ㸰㸮ᖺᗘࠕ෌ฎ⌮ࢩࢫࢸ࣒࡟ྥࡅࡓ
᰾ศ⿣⏕ᡂ≀ࡢ㧗ຠ⋡ศ㞳࣭ศᯒἲࡢ㛤Ⓨࠖࡢᡂᯝ࡛ࡍࠋ
Development of liquid scintillation detector for analysis of spent nuclear fuel
KIKUNAGA, H., YOSHIMURA, T., SHINOHARA, A.
− 88 −

1P34

ࣉࣟࢺࣥᤕ⋓࡟ࡼࡿ Pm-146 ࡢ⏕ᡂ⋡
(1 ⟃Ἴ኱ຍ㏿ჾ, 2 㔠ἑ኱⌮, 3 㔠ἑ኱⮬↛, 4 㔠ἑ኱⌮ᕤ, 5 ኱㜰኱㝔⌮)‫ۑ‬ᮌୗဴ୍ 1, ᳃⏣♸୍㑻 2, Ⲩᮌᖿ⏕ 3, ᶓᒣ᫂ᙪ 4, 㧗ᶫᡂே 5

146

Nd(p,n)146Pm cross section (mb)࠙⥴ゝࠚ⌧ᅾࡢᏱᐂࢆᵓᡂࡍࡿඖ⣲ࡢ୰࡛ Fe ㏆ഐ᰾ࡼࡾࡶ㍍࠸ඖ⣲ࡣᫍࡢ୰࡛సࡽࢀࠊࡑࢀࡼࡾࡶ
㔜࠸ඖ⣲ࡣ㉸᪂ᫍ⇿Ⓨࡢ㧗 ࣭㧗ᐦᗘࡢ୰࡛୰ᛶᏊࡢከ㔜ᤕ⋓࡜ ȕ㸫ቯኚࢆ୺య࡜ࡋࡓ᰾཯ᛂ
࡟ࡼࡾ⏕ᡂࡉࢀࡿࠋࡋ࠿ࡋ࡞ࡀࡽࠊ⌧ᅾࡢᆅ⌫ୖ࡟⣙ 30 ᰾✀ࡢ୰ᛶᏊ୙㊊᰾㸦p ᰾㸧ࡀᏑᅾࡋࠊ⏕ᡂ࡟㛵ࡋ࡚ࡣ୰ᛶᏊࡢᤕ⋓཯ᛂ࡛ࡣㄝ᫂୙ྍ⬟࡛ࠊ୰ᛶᏊࡢᨺฟࡶࡋࡃࡣ㝧Ꮚࡢᤕ⋓࡟ࡼࡾ⏕ᡂࡍࡿࠋ㏆ᖺඖ⣲ྜᡂ࡟㛵ࡋ࡚ࠊ≉࡟⏕ᡂ⋡࡟ࡘ࠸࡚ࡣ⇕᰾཯ᛂࡀ⪃៖ࡉࢀࠊ ᗘࢆ௬ᐃࡋࣉࣛࣥࢡࡢ㯮యᨺᑕࡢ࢚ࢿࣝࢠ࣮ศᕸࢆࡋࡓගᏊ࡜ࡢගศゎ࡜ࠊ࣐ࢡࢫ࢚࢘ࣝศᕸ
ࡢ࢚ࢿࣝࢠ࣮ࢫ࣌ࢡࢺࣝࢆࡋࡓࣉࣟࢺࣥࡸ୰ᛶᏊࡢᤕ⋓཯ᛂࡀ⪃࠼ࡽࢀ࡚࠸ࡿࠋp ᰾ࡢ⏕ᡂ࡟ࡣගศゎ࡛ࡣ㜈್௜㏆ࡢ(J,n)཯ᛂࠊࣉࣟࢺࣥࡢᤕ⋓࡛ࡣᩘ MeV ࡢࢡ࣮ࣟࣥࣂࣜ࢔௨ୗࡢప
࢚ࢿࣝࢠ࣮ࡢ(p,J)ࡸ(p,n)཯ᛂࡀᨭ㓄ⓗ࡛࠶ࡿࠋSm-146 ࡶ p ᰾ࡢࡦ࡜ࡘ࡛ࠊSm-146 ࡢ⏕ᡂ࡟ࡣ
Sm-147 ࡢගศゎ࡜ Nd+p ཯ᛂ࠿ࡽጞࡲࡿࣉࣟࢺࣥࡢᤕ⋓ࡀ⪃࠼ࡽ ࢀࡿࠋᮏ◊✲࡛ࡣ
146
Nd(p,n)146Pm ཯ᛂࡢ⤒㊰࡟╔┠ࡋࠊ᰾཯ᛂ᩿㠃✚ࡢ ᐃࢆ⾜ࡗࡓࠋ࠙ᐇ㦂ࠚ⃰⦰ᗘ 97.1%ࡢ 146Nd ⃰⦰ྠ఩యࢆ⣧ᗘ 99.999%ࡢ Al ࣍࢖ࣝ࡟㟁╔ࡋࠊ146Nd ࢱ࣮ࢤࢵࢺࢆㄪ〇ࡋࡓࠋ」ᩘᯛࡢ 146Nd ࢱ࣮ࢤࢵࢺࢆ㔜ࡡྜࢃࡏ࡚ࠊ㜰኱ RCNP ࡢ AVF ࢧ࢖ࢡࣟࢺࣟࣥࡼ
ࡾᚓࡽࢀࡿࣉࣟࢺࣥࣅ࣮࣒ࡢ↷ᑕࢆ⾜ࡗࡓࠋ↷ᑕᚋ࡟࣐࢞ࣥ⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮ࣜࢆ⾜࠸146
Pm ࡢᨺᑕ⬟ࢆᐃ㔞ࡋࠊ᰾཯ᛂ᩿㠃✚ࢆィ⟬ࡋࡓࠋࡲࡓࠊࡑࢀࡒࢀࡢࢱ࣮ࢤࢵࢺ࡟ධᑕࡋࡓ
࢚ࢿࣝࢠ࣮ࡣ OSCAR ࢥ࣮ࢻࢆ⏝࠸࡚ィ⟬ࡋࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ
Fig. 1 ࡟ 146Nd(p,n)146Pm ཯ᛂࡢບ㉳㛵ᩘࢆ
103♧ࡍࠋࡲࡓࠊẚ㍑࡜ࡋ࡚ NON-SMOKER ࡜
ALICE ࢥ࣮ࢻ࡟ࡼࡿィ⟬್ࡶ♧ࡍࠋ࠸ࡎࢀ
102ࡢィ⟬ࢥ࣮ࢻ࡟ࡶࠊᐇ㦂್࡜⣙ 1 ᱆ࡢ㝸ࡓࡾࡀぢࡽࢀࡿࠋඖ⣲ྜᡂ ᗘୗࡢ 146Nd(p,n)
101཯ᛂ࠿ࡽࡢ 146Pm ࡢ⏕ᡂ⋡ࡣࠊ࣐ࢡࢫ࢚࢘ࣝ
ศᕸࡢࣉࣟࢺ࢚ࣥࢿࣝࢠ࣮ࢫ࣌ࢡࢺࣝ࡜᰾
཯ᛂ᩿㠃✚ࡢ✚࡛♧ࡍ஦ࡀ࡛ࡁࡿࠋᐇ㦂࡛‫ە‬: This work100
̿: NON-SMOKERᚓࡽࢀࡓ 146Nd(p,n)146Pm ᰾཯ᛂ᩿㠃✚ࢆ
: ALICENON-SMOKER ィ⟬ࢆᇶ࡟ప࢚ࢿࣝࢠ࣮ഃ
10-1
2
4
6
8 10 12 14 16 18࡟እᤄࡍࡿࡇ࡜࡛ ᗘ࡜⏕ᡂ⋡ࡢ㛵ಀࢆᚓ
ECM (MeV)ࡿࡇ࡜ࡀ࡛ࡁࡓࠋࡲࡓࠊNON-SMOKER ࡟
Fig. 1. Excitation function for 146Nd(p,n)146Pm
ࡼࡿ௚ࡢ᰾཯ᛂࡢィ⟬ࢆ⏝࠸࡚ࠊࣉࣟࢺࣥ
reaction.
ᤕ⋓࡟ࡼࡿ Sm-146 ࡢඖ⣲ྜᡂࡢ⤒㊰࡟ࡘ࠸࡚⪃ᐹࡋࡓࠋ

Production rate of Pm-146 via proton capture reaction
KINOSHITA, N., MORITA, Y., ARAKI, M., YOKOYAMA, A., TAKAHASHI, N.
− 89 −

1P35

7E ኚᙧ᰾࡟ᑐࡍࡿ 2 㔜࢖࢜ࣥ᰾⼥ྜ཯ᛂࡢບ㉳㛵ᩘ㔠ἑ኱㝔⮬↛1ࠊ㜰኱㝔⌮2ࠊ㔠ἑ኱⌮ᕤ3‫ۑ‬㈅㇂ ⱥᶞ1, Ⲩ஭ ⨾࿴Ꮚ1,ὸ㔝 ᩔྐ1, すᕝ ᜨ1, ኱Ụ ୍ᘯ2, ⳥Ọ ⱥᑑ2, 㧗ᶫ ᡂே2, ᶓᒣ ᫂ᙪ3࠙ᗎㄽࠚ㔜࢖࢜ࣥ᰾⼥ྜ཯ᛂ࡛ࡣࠊ㏆ᖺᶆⓗ᰾࡟࢔ࢡࢳࣀ࢖ࢻ➼ࡢኚᙧ᰾ࡀࡼࡃ⏝࠸ࡽࢀࡿࡼ࠺
࡟࡞ࡗࡓࠋࡇࡢሙྜࠊ⌫ᙧ᰾࡜ẚ࡭࡚཯ᛂࡢධཱྀࢳࣕࢿ࡛ࣝࡢࢡ࣮ࣟࣥ㞀ቨࡀ␗࡞ࡿࡓࡵࠊ⏕ᡂ☜⋡ࡢኚ໬ࡀண᝿ࡉࢀࡿࠋᮏ◊✲࡛ࡣࠊ࢔ࢡࢳࣀ࢖ࢻ࡜ྠᵝ࡟ẚ㍑ⓗኚᙧࡀ኱ࡁࡃࠊ᰾ศ⿣ࡀ㉳ᐃࡀᐜ᫆࡞ࣛࣥࢱࣀ࢖ࢻඖ⣲࡟╔┠ࡋࠊTb㸦159Tb:100 %㸧ࢆࢱࡇࡾ࡟ࡃ࠸ࡓࡵ࡟཯ᛂ᩿㠃✚ࡢ࣮ࢤࢵࢺ࡜ࡋࡓ16O࡜ࡢ᰾⼥ྜ཯ᛂᐇ㦂ࢆ⾜ࡗࡓࠋTbཎᏊ᰾࡛ࡣࠊᅇ㌿ᴃ෇య㏆ఝࡢᅇ㌿㍈᪉ྥࡢ㛗ࡉࢆaࠊᅇ㌿㍈࡟ᆶ┤࡞᪉ྥࡢ㛗ࡉࢆb࡜ࡍࡿ࡜ࠊ㟁Ẽᅄ㔜ᴟ࣮࣓ࣔࣥࢺ㸦+ 1.432㸧࠿ࡽồࡵࡓኚᙧᗘa / bࡢ್ࡣ 1.07 ࡛࠶ࡿࠋ୍᪉ࠊ16Oࡣ⌫ᙧ᰾࡛࠶ࡾࠊࡇࡢ཯ᛂ⣔ࡢextra push energyࡣᑠࡉ࠸ࡢ࡛ࠊࢱ࣮ࢤࢵࢺࡢኚᙧ࡟ᩄឤ࡞ᐇ㦂⣔࡛࠶ࡿࠋࡇࡢ཯ᛂ⣔࡛཯ᛂ⏕ᡂ≀ࡢᨺᑕ⬟ࢆᐃࡋࠊࡑࡇ࠿ࡽ᩿㠃✚ࢆᑟฟࡋ⌮ㄽⓗ࡞ບ㉳㛵ᩘ࡜ࡢẚ㍑ࢆ⾜ࡗࡓࠋ࠙ᐇ㦂ࠚ኱㜰኱Ꮫ᰾≀⌮◊✲ࢭࣥࢱ࣮࡟࡚ࠊࢫࢱࢵࢡἲཬࡧ࢞ࢫࢪ࢙ࢵࢺἲ࡟ࡼࡿ↷ᑕᐇ㦂ࢆ⾜ࡗࡓࠋ๓⪅ࡣࠊ㛗ᑑ࿨⏕ᡂ≀ࡢ≀ࡢᐃࢆ┠ⓗ࡜ࡋࠊᚋ⪅ࡣࠊ㍺㏦ຠ⋡ࡢ⿵ṇࡀᚲせࡔࡀ▷ᑑ࿨⏕ᡂᐃࡀྍ⬟࡛࠶ࡿࠋࢱ࣮ࢤࢵࢺ㸦1.9㹼2.4 mg/cm2ཌ㸧ࡣࢸࣝࣅ࣒࢘㓟໬≀ࢆAl⟩㸦ࢫࢱࢵࢡἲ㸧ࡲࡓࡣTi⟩㸦࢞ࢫࢪ࢙ࢵࢺἲ㸧࡟ศᏊ㟁╔ࡋ࡚ㄪ〇ࡋࡓࠋࢫࢱࢵࢡἲ࡛ࡣࠊࢱ࣮ࢤࢵࢺࢆ 3ᯛ㔜ࡡྜࢃࡏ࡚ࢫࢱࢵࢡ࡜ࡋࠊ16O࢖࢜ࣥࢆ↷ᑕࡋࡓࠋ↷ᑕᚋࠊྛࢱ࣮ࢤࢵࢺ࡟ศࡅ࡚࣏࢚ࣜࢳࣞ
ࣥࢩ࣮ࢺ࡟ᑒධࡋࠊGe༙ᑟయ᳨ฟჾࢆ⏝࠸࡚ࠊᚓࡽࢀࡓᨺᑕᛶ཯ᛂ⏕ᡂ≀ࡢȚ⥺ᐃࢆ⾜ࡗࡓࠋ

࢞ࢫࢪ࢙ࢵࢺἲ࡛ࡣࠊྠࡌ㔜࢖࢜ࣥࢆࢱ࣮ࢤࢵࢺ࡟↷ᑕࡋࠊ཯㊴ࡋ࡚㣕ࡧฟࡋࡓ཯ᛂ⏕ᡂ≀ࢆࠊ࢞ࢫࢪ࢙ࢵࢺࢆ⏝࠸࡚ᐇ㦂ᐊ࡟ᦙ㏦ࡋࣇ࢕ࣝࢱ࣮࡛ᤕ㞟ࡋࡓᚋࠊྠᵝ࡟Ge༙ᑟయ᳨ฟჾࢆ⏝࠸࡚Ț⥺ᐃࢆ⾜ࡗࡓࠋ୧᪉ࡢ

ᐃ࡟࠾࠸࡚ᐃ㔞ࡋࡓᨺᑕ⬟࠿ࡽࠊ཯ᛂ᩿㠃✚ࢆồࡵࡓࠋ      ཯ᛂ᩿㠃✚㸦mb㸧࠙⤖ᯝ࡜⪃ᐹࠚȚ⥺ ᐃࡢ⤖ᯝࠊࢫࢱࢵࢡ
1.00E+03
Ta169
ἲ࡛ࡣ172Ta ࠊ168,170,171Hfࠊ167,169Luࠊ࢞ࢫࢪ168170168࢙ࢵࢺἲ࡛ࡣ
Taࠊ Hfࡀ᳨ฟࡉࢀࡓࠋ
Ta170Ta1681.00E+02
Hf-170(Ta-170)
ᐇ㦂࠿ࡽᚓࡽࢀࡓບ㉳㛵ᩘࡢ୍㒊ࢆィ⟬Lu-169(Ta-169)
ࢥ࣮ࢻALICE࡟ࡼࡿ⌫ᙧࢆ᝿ᐃࡋࡓ⌮ㄽ
Hf-168(Ta-168)
1.00E+01
Ta-170್࡜࡜ࡶ࡟ᅗ࡟♧ࡋࡓࠋ᳨ฟࡉࢀࡓ168,170Hfࠊ
Ta-168169Luࡢ࡯࡜ࢇ࡝ࡣࠊඛ⾜᰾࡛࠶ࡿTaࡢὶࢀ
1.00E+00㎸ࡳ࡟ࡼࡿ࡜⪃࠼ࡽࢀࡿࡓࡵࠊࡇࡢᐇ㦂್
70
90
110
130
150
170
ࢆTaࡢ⌮ㄽ್࡜ẚ㍑ࡋࡓࠋẚ㍑࡟࠾࠸࡚ࠊ
ධᑕ࢚ࢿࣝࢠ࣮㸦MeV㸧ኚᙧ᰾ࡢຠᯝࡀᮇᚅࡉࢀࡿ཯ᛂ᩿㠃✚ࡢ
ᅗ 159Tb(16O,xn)175íxTa཯ᛂࡢບ㉳㛵ᩘࠋⓑ୸ࡣࢫࢱࢵࢡἲࠊ㯮୸⤯ᑐ್㸦ධཱྀࢳࣕࢿࣝ㸧ࠊྛ⏕ᡂ≀ࡢ᩿㠃✚ࡣ࢞ࢫࢪ࢙ࢵࢺἲ࡛ᚓࡽࢀࡓᐇ㦂್ࢆࠊ◚⥺ࡣᐇ㦂್ࢆ⤖ࢇ㸦ฟཱྀࢳࣕࢿࣝ㸧ࠊ⼥ྜ཯ᛂࡢࡋࡁ࠸್࡟ࡘ
ࡔ⥺ࢆ♧ࡍࠋᐇ⥺ࡣ⌮ㄽ್ࢆ♧ࡍࠋ࠸࡚ὀ┠ࡋࡓࠋ⤯ᑐ್࡟ࡘ࠸࡚ࡣࠊ඲యⓗ࡟⌮ㄽ್ࡼࡾᑠࡉ࠿ࡗࡓࠋྛ⏕ᡂ≀ࡢ᩿㠃✚࡟ࡘ࠸࡚ࡣࠊࢹ࣮ࢱ࡟ࡤࡽࡘࡁࡀ࠶ࡿࡀࠊ170Ta࡟ࡘ࠸࡚ࡣࠊࣆ࣮ࢡࡢ఩⨨ࡣ⌮ㄽ್࡜࡯ࡰ୍⮴ࡋࡓࠋ169Ta࡛ࡣࠊ❧ࡕୖࡀࡾࡣ⌮ㄽ್࡜࡯ࡰ୍⮴ࡋࡓࠋ⌮ㄽ್࡜ࡢࡎࢀ࡟ࡘ࠸࡚ࡣࠊኚᙧ᰾ࡢᙳ㡪ࢆྵࡵ࡚࡝ࡢࡼ࠺࡞ࣃ࣓࣮ࣛࢱ࣮ࡀᙳ㡪ࡋ࡚࠸ࡿ࠿᳨
ウࡍࡿᚲせࡀ࠶ࡿࠋ
Excitation Function for Fusion Reaction of the O-16 Projectile with a Deformed Nucleus of Tb-159
KAIYA, H., ARAI, M., ASANO, A., NISHIKAWA, M., OOE, K., KIKUNAGA, H., TAKAHASHI, N.,
YOKOYAMA, A.
− 90 −

3࠱࡞࡮ࠥ࡞ᴺߦࠃࠆ Co ߣ Feࠗࠝࡦ࠼࡯ࡊ㉄ൻࠬ࠭ߩ⏛᳇․ᕈ
᧲ᄢ㒮Ꮏ ‫᧲ޔ‬ℂᄢ  ㊁᧛⾆⟤ ‫ޔ‬٤ጟ᧛ਭ⟤ሶ ‫ޔ‬ጊ↰ᐽᵗ ‫⏛ ޤߦ߼ߓߪޣ‬ᕈߩߥ޿ TiO2 ߿ SnO2 ߦㆫ⒖㊄ዻࠗ㪇㪅㪍㪎㪉ߣ߇ႎ๔ߐࠇ‫᧚ࠬࠢ࠾ࡠ࠻ࡦࡇࠬޔ‬ᢱߣߒߡᵈ⋡ߐࠇ㪇㪅㪍㪎㪈ߡ޿ࠆ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬2 ⒳㘃ߩ⇣ߥࠆỚᐲߩ⏛ᕈࠗࠝ

㪇㪅㪍㪎㪇

㪺㪆㪸

ࠝࡦࠍᓸ㊂࠼࡯ࡊߒߚඨዉ૕ߪቶ᷷ᒝ⏛ᕈࠍ␜ߔߎ

㪇㪅㪍㪍㪐ࡦ㧔Fe3㧗,Co2㧗㧕ࠍ࠼࡯ࡊߒߚ SnO2 ඨዉ૕ߩ☳ᧃࠍ૞㩷㩷㪈㩼㩷㪝㪼㩷㪻㫆㫇㫀㫅㪾㩷㪇㪅㪍㪍㪏⵾ߒ‫⏛ޔ‬᳇․ᕈࠍ⺞ߴߚ‫ޕ‬㪇㪅㪇‫ޣ‬ታ㛎ᣇᴺ‫ޤ‬Sn1-x-yCoxFeyO2 ☳ᧃ⹜ᢱࠍ‫࡞ࠥ࡮࡞࠱ޔ‬ᴺࠍ↪޿ߡ૞⵾ߒߚ‫ޕ‬Cl 㧙 ,

㪇㪅㪌

㪈㪅㪇

㪈㪅㪌

㪉㪅㪇

㪉㪅㪌

㪊㪅㪇

㪻㫆㫇㪼㪻㩷㪚㫆㩷㩿㩼㪀࿑‫ޓ‬%Q࠼࡯ࡊ㊂ߩᩰሶቯᢙᲧߩᄌൻ (G৻ቯ

NO3 㧙 , ࠢࠛࡦ㉄ࠍ฽߻Sn4㧗‫ޔ‬Fe3㧗߅ࠃ߮ Co2㧗ṁᶧࠍᚲቯߩᲧ(0҇x҇0.05‫ޔ‬0҇y҇0.05)ߢᷙว‫ࠍ࡞࡯ࠦ࡝ࠣࡦ࡟࠴ࠛޔ‬ട߃ߡ࠱࡞

㪇㪅㪉㪇ࠍ૞⵾ߒ‫ޔ‬90͠ߢടᾲỚ❗ߒߡࠥ࡞ൻߒ‫ޔ‬ⓨ᳇ਛߢ㪇㪅㪈㪇ᤨ㑆὾ᚑߒߡ☳ᧃࠍᓧߚ‫ޕ‬ᓧࠄࠇߚ⹜ᢱߪ‫ ᧃ☳ޔ‬X

Fe0.01Co0.005

㱘㪙㪆㪚㫆㪃㪝㪼

250͠, 2 ᤨ㑆઒὾⚿ߒߚ‫ߩߘޕ‬ᓟ‫ޔ‬550͠ߢⓨ᳇ਛ 2

Fe0.01Co0.01

Fe0.01Co0.0025

㪇㪅㪇㪇

Fe0.01Co0.03

Fe0.01Co0.002

Fe0.01㪄㪇㪅㪈㪇✢࿁᛬㧔XRD㧕‫ޔ‬ᝄേ⹜ᢱဳ⏛ജ⸘㧔VSM㧕‫ࡃࠬࡔޔ‬㪄㪇㪅㪉㪇࠙ࠕ࡯ࠬࡍࠢ࠻࡞(MS)ߦࠃࠆ᷹ቯࠍⴕߞߚ‫ޕ‬㪄㪈㪇㪇㪇㪇

㪄㪌㪇㪇㪇

㪇

㪌㪇㪇㪇

㪈㪇㪇㪇㪇

㪩㪼㫃㪸㫋㫀㫍㪼㩷㪠㫅㫋㪼㫅㫊㫀㫋㫐㩷㪟㩿㪦㪼㪀‫⚿ޣ‬ᨐ‫ޤ‬XRD ࠍ᷹ቯߒߚ⚿ᨐ‫⹜ోޔ‬ᢱ߇࡞࠴࡞᭴ㅧ
࿑‫㉄ޓޓ‬ൻࠬ࠭ߩ⏛᳇ࡅࠬ࠹࡝ࠪࠬ
ࠍ␜ߒ‫(ޔ‬110㧕ߩࡇ࡯ࠢ૏⟎߆ࠄ Co ߩჇട㪈㪅㪇㪈ߢ㜞ⷺ߳‫ޔ‬Fe ߩჇടߣ౒ߦૐⷺ஥ߦ⒖േߒ㪈㪅㪇㪇ߚ‫ޕ‬Co ࠼࡯ࡊߦࠃࠅᩰሶ߇ዊߐߊ‫ޔ‬Fe ࠼࡯
㪇㪅㪐㪐
㪇㪅㪐㪏
ࡊߦࠃࠅᄢ߈ߊߥࠆߎߣࠍ␜ߔ‫⚿ޔߦࠄߐޕ‬㪇㪅㪐㪎᥏ߩᩰሶቯᢙᲧ㧔c/a㧕ߪ‫ޔ‬SnO2 ߦ Fe‫ޔ‬Co㪇㪅㪐㪍㪘㪑㪪㫅㪐㪏㪅㪌㪚㫆 㪇㪅㪌 㪝㪼㪈 㪦㪉㪇㪇
ߩ࠼࡯ࡊ㊂ߣߣ߽ߦᷫዋߒߡ‫ޔ‬1㧑ߢ㜞޿⇣
㪇㪅㪐㪌
㪈㪅㪇㪈
ᣇᕈ߇޽ࠆߎߣ߇⏕⹺ߐࠇߚ㧔࿑ 1㧕‫ޔߚ߹ޕ‬
㪈㪅㪇㪇
㪇㪅㪐㪐
VSM ߦࠃࠆ⏛᳇ࡕ࡯ࡔࡦ࠻ߩ᷹ቯ⚿ᨐ߽ห㪇㪅㪐㪏᭽ߦ Fe : Co=1 : 1 ߩ 1%࠼࡯ࡊ㊂ߩߣ߈
㪇㪅㪐㪎
㪇㪅㪐㪍
0.212ȝB /(Co,Fe)ߣᦨᄢ୯ࠍ␜ߒߚ(࿑ 2)‫߹ޕ‬㪇㪅㪐㪌㪙㪑㪪㫅 㪐㪏㪚㫆㪈 㪝㪼 㪈㪦 㪉㪇㪇㪇㪅㪐㪋ߚ‫଻߈ߣߩߎޔ‬ᜬജ߇ᦨ߽ዊߐ߆ߞߚ‫ޕ‬Co
㪈㪅㪇㪈
㪈㪅㪇㪇
Ớᐲ߇ 0.5%ߩߣ߈ߦ଻ᜬജ߇ᄢ߈߆ߞߚ‫ޕ‬㪇㪅㪐㪐MS ߩ᷹ቯ߆ࠄߪ‫ޔ‬Co ỚᐲߩჇടߣ౒ߦ⏛᳇
㪇㪅㪐㪏
㪇㪅㪐㪎
ಽⵚࡇ࡯ࠢߩᒝᐲ߇ᷫዋߒߡ޿ࠆߎߣ߇␜
㪇㪅㪐㪍
㪇㪅㪐㪌
ߐࠇߚ‫ޕ‬Co ߩ࠼࡯ࡊߦࠃࠅ⚿᥏ౝߩ Fe ߩ⏛㪇㪅㪐㪋㪚㪑㪪㫅 㪐㪍 㪚㫆 㪊㪝㪼 㪈 㪦 㪉㪇㪇㪇㪅㪐㪊᳇⊛⋧੕૞↪߇ᷫዋߒߚߚ߼ߣ⠨߃ࠄࠇࠆ‫ޕ‬
㪄㪈㪇
㪄㪌
㪇
㪌
㪈㪇
Ᏹ⏛ᕈࡇ࡯ࠢߪ 2 ⒳㘃᷹ⷰߐࠇ‫ޔ‬྾ᭂሶಽⵚ
㪭㪼㫃㫆㪺㫀㫋㫐䇭㪲㫄㫄㪆㫊㪴
QS ߇ᄢ߈޿Ᏹ⏛ᕈࡇ࡯ࠢߪ‫⚛㉄ޔ‬ᰳ㒱ㄭற࿑‫ޓ‬%Q࠼࡯ࡊߦ઻߁ࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ᄌൻ
ߩ Fe3+ߣࠃࠆߣ⠨߃ࠄࠇࠆ‫ޕ‬Co ৻ቯߢ Fe ߩᄌൻߦࠃࠆ⏛᳇․ᕈߩᄌൻߪᒰᣣ␜ߔ‫ޕ‬

Magnetic properties of Co and Fe codoped SnO2 powders prepared by sol-gel method.
NOMURA, K., OKAMURA,K.,YAMADA,Y.
− 91 −

1P37ࠗࡒ࠳࠱࡯࡞฽᦭㈩૏ሶ(G ++ ㍲૕ߩ␜ߔ㧞Ბ㓏ࠬࡇࡦࠢࡠࠬࠝ࡯ࡃ࡯᜼
േ㧦ࡔࠬࡃ࠙ࠕ࡯ಽశᴺߦࠃࠆ⎇ⓥ
↥✚⎇ ‫ޔ‬ᾢᧄᄢ㒮࡮⥄ὼ ‫ޔ‬ጟጊᄢ࡮ℂ  ٤㘵ፉ⺈৻㇢ ‫ޔ‬ᐔ↰⧐᮸ ‫ޔ‬⍫็⡡৻ ‫ޔ‬૒⮮㋕਽ ‫ᤩ ⷏ޔ‬ผᦶ ‫ᧄ᧻ޔ‬ዏ⧷ ‫ޔ‬Ꮉᧄ੫ᐔ ‫↰⮮ޔ‬㇌ᵗ ‫ޔ‬ਣጊਭᔒ ‫ޔ‬ዊፉᱜ᣿ 
2+㩷Transmission / 㧑㪟㫀㪾㪿㪄㫊㫇㫀㫅㩷㫄㫆㫃㪸㫉㩷㪽㫉㪸㪺㫋㫀㫆㫅

HN
NH‫࡞࡯࠱࠳ࡒࠗ ޤߦ߼ߓߪޣ‬ၮࠍ฽߻ᄙᐳ㈩૏ሶ
Me N
N Me
ߩ Fe(II)㍲૕ߪ‫ޔ‬ᄙ᭽ߥࠬࡇࡦࠢࡠࠬࠝ࡯ࡃ࡯N
Fe N(SCO)᜼േࠍ␜ߔߎߣ߇⍮ࠄࠇߡ޿ࠆ‫੹ޕ‬࿁ߪ‫ޔ‬
2-MeNNฝ࿑ߩ㍲૕[Fe(H2L )2]Cl㨯X ߦ⷗ࠄࠇࠆ৻Ბ㓏NN
߅ࠃ߮ੑᲑ㓏ߩ SCO ォ⒖‫ߚ߹ޔ‬㘃ૃߩ㈩૏ሶ
H
H[Fe2(H2L’)3](ClO4)4߆ࠄ᭴ᚑߐࠇࠆ㧞ᩭ㍲૕[Fe2(H2L’)3](ClO4)4 ߦ[Fe(H2L2-Me)2]Cl㨯X
R1 = R2 = H
߅ߌࠆ LS(ૐࠬࡇࡦ) -HS(㜞ࠬࡇࡦ)ψHS-HSォ⒖ߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ ޤ‬㍲૕[Fe(H2L2-Me)2]Cl㨯ClO4 ߩ 57Fe ࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ࠍ࿑ 1 ߦ␜ߒߚ‫ޕ‬78 K એਅߩૐ᷷ߢߪ LS-FeII (į = 0.53 mm/s, ¨EQ = 0.24 mm/s)߇ᡰ㈩⊛ߢ޽ࠆ߇‫ޔ‬᷷ᐲߩ਄᣹ߦ
ߟࠇߡ HS-FeII ᚑಽ߇Ⴧടߒ‫ޔ‬298 K ߢߪ HS-FeII ᚑಽߩߺ(į = 0.94 mm/s, ¨EQ = 1.47 mm/s)ߣߥ
ࠆߎߣ߇ಽ߆ࠆ‫ࠢ࡯ࡇޕ‬㕙ⓍᲧ߆ࠄ᳞߼ߚ HS ߩࡕ࡞ಽ₸ߪ࿑ 2a ߩߣ߅ࠅߢ޽ࠅ‫ޔ‬Ყセ⊛ᐢ޿᷷ᐲ▸࿐ߢ 1/2(LS-FeII + HS-FeII)ߩ⁁ᘒࠍߣࠆ㧞Ბ㓏ߩ SCO ォ⒖ߣߥߞߚ‫৻ޕ‬ᣇ‫ޔ‬ኻ㒶ࠗࠝࡦࠍ⟎߈឵߃ߚ[Fe(H2L2-Me)2]Cl㨯PF6㨯0.8EtOH ߪ‫৻ޔ‬Ბ㓏ߩࠪࡖ࡯ࡊߥ SCO ォ⒖ࠍ␜ߒߚ(࿑2b)‫ޕ‬X- = ClO4-, PF6-ߩ޿ߕࠇ߽ NH㨯㨯㨯Cl-᳓⚛⚿วߦၮߠߊ㘃ૃߩੑᰴర᭴ㅧࠍߣࠆ߇‫ࠝࠗޔ‬ࡦߩᄢ߈ߐ߇ጀ㑆ߩ⋧੕૞↪ߦᓇ㗀ࠍਈ߃ߡ޿ࠆ߽ߩߣផ᷹ߐࠇࠆ‫ޔߚ߹ޕ‬೨⠪ߢߪ‫ޔ‬SCO
ォ⒖ߦ઻ߞߡ‫ޔ‬ⓨ㑆⟲߽ᄌ㩷ൻߔࠆߩߦኻߒ‫ޔ‬ᓟ⠪ߢߪ
100
㪈㪇㪇
298 K
ⓨ㑆⟲ߩᄌൻߪ⿠߈ߥ޿ߣ
92.5
100
㪏㪇
޿߁Ꮕ⇣߽⷗಴ߐࠇߡ޿ࠆ
230 K
1)
95
‫ ޕ‬ੑ ᩭ ㍲ ૕ [Fe2(H2L’)3]
100㪍㪇
(ClO4)4 ߪ‫ޔ‬4.2 K-200 K ߩᐢ
200 K
95
㪋㪇
޿ ᷷ ᐲ ▸ ࿐ ߢ LS-FeII +
100
㩿㪸㪀
100 K
II
HS-Fe ߢ⴫ߐࠇࠆਛ㑆⊛ߥ
90
㪉㪇
100
ࠬࡇࡦ⁁ᘒࠍߣࠅ‫ޔ‬᣹᷷ߦ
㩿㪹㪀
78 K
II
II
90
㪇
ࠃߞߡ‫ޔ‬HS-Fe + HS-Fe ߳
100ࠪࡖ࡯ࡊߥォ⒖ࠍ␜ߒߚ‫ޕ‬㪇㪌㪇 㪈㪇㪇 㪈㪌㪇 㪉㪇㪇 㪉㪌㪇 㪊㪇㪇
4.2 K
㪫㪆㪢
90
ࡔࠬࡃ࠙ࠕ࡯ࠬࡍࠢ࠻࡞ߩ
✢᏷߅ࠃ߮¨EQ ୯ߩ᷷ᐲᄌ
–6
–4
–2
0
2
4
6
࿑ 2 HS ᚑಽߩࡕ࡞ಽ₸–1ൻ߆ࠄ‫ޔ‬ੑߟߩ Fe ࠨࠗ࠻ߪVelocity / mm s(a) [Fe(H2L2-Me)2]Cl 㨯 ClO4 㨯㕖╬ଔߢ޽ࠆߎߣ߇␜ໂߐ
࿑ 1 [Fe(H2L2-Me)2]Cl㨯ClO4 㨯 0.5EtOH, (b) [Fe(H2L2-Me)2]Cl㨯ࠇߚ‫ޕ‬PF6㨯0.8EtOH1) ⷏‫ ╙ޔઁޔᧄ᧻ޔ↰⨹ޔ‬59 ࿁ 0.5EtOH ߩ㩜㩇㩔㩨㨽㨻㨺㩇㩗㩩㩂㩎㩣㍲૕ൻቇ⸛⺰ળ‫ޔ‬1Ba-07 (2009).

Mssbauer study of two-step spin-crossover in Fe(II) complexes of imidazole-containing ligands
IIJIMA, S., HIRATA, Y., YABUKI, S., SATO, T., NISHI, K., MATSUMOTO, N., KAWAMOTO, R.,
FUJITA, K., MARUYAMA, H., KOJIMA, M.
− 92 −

− 93 −

1P39

ࠠ࡟࡯࠻㈩૏ሶࠍᜬߟ࠙࡜࠾࡞㧔㨂㧵㧕ߩวᚑߣ⚿᥏᭴ㅧ ᧲㇌ᄢቇℂቇㇱ ٤ർỈ ቁผ‫ ޔ‬Ꮉ㦮 ᱞᔒ࠙࡜ࡦߪ +3 ~ +6 ߩ㉄ൻ⁁ᘒࠍߣࠅ‫ޔ‬U3+‫ޔ‬U4+‫ޔ‬UO2+‫ޔ‬UO22+ ߣ‫㉄ޔ‬ൻᢙߦࠃࠅࠗࠝࡦߩ᭴ㅧ
߇ᄌൻߔࠆ‫ߩߘޕ‬ਛߢ߽‫ޔ‬UO22+ ߇ᦨ߽቟ቯߢ‫ޔ‬㈩૏᭴ㅧߪ‫ޔ‬6 ㈩૏ߢߪ౎㕙૕ဳ‫ޔ‬7 ㈩૏ߢߪ੖
ᣇਔ㍙ဳ‫ޔ‬8 ㈩૏ߢߪ౐ᣇਔ㍙ဳ߇৻⥸⊛ߢ޽ࠆ‫ޕ‬࠙࡜ࡦ(VI)ߦ⓸⚛߇㈩૏ߒߚ㍲૕ߩ⚿᥏᭴ㅧߩႎ๔଀ߪዋᢙߢ޽ࠆ‫ޔ߫߃଀ޕ‬Alcock ╬߇ႎ๔ߒߚ [UO2(acac)2py] ߇޽ࠆ‫ߩߎޕ‬㍲૕ߪ‫࡞ࠕࠪࠠࠕߩࡦ࡜࠙ޔ‬૏ߦ࠙࡜࠾࡞ߩ㉄⚛߇㈩૏ߒ‫ࠛޔ‬ࠢࠕ࠻࡝ࠕ࡞ᐔ㕙ߦ 2 ߟߩࠕ࠮࠴࡞ࠕ࠮࠻࠽࠻ߩ㉄⚛߇ࠠ࡟࡯࠻㈩૏ߒ‫ޔ‬㧝ߟߩࡇ࡝ࠫࡦ߇㈩૏
ߒߚ੖ᣇਔ㍙ဳ 7 ㈩૏ߢ޽ࠆ‫ᦨޔࠄ߇ߥߒ߆ߒޕ‬ㄭ‫[ޔ‬UO2(acac)2py] ߩ py ߩㇱಽࠍࡇ࡝ࠫࡦ⺃ዉ૕ߦ⟎߈឵߃ߚ㍲૕ [UO2(acac)24-Mepy], [UO2(acac)22,4-dmpy] ߿‫ޔ‬py ߩㇱಽࠍ᨞ᯅ㈩૏ሶߦ⟎߈឵߃ߚ㍲૕ [{UO2(acac)2}2(4,4’-bpy)] ߿‫ ߇⚛⓸ޔ‬1 ߟ㈩૏ߒߡ޿ࠆ࠙࡜ࡦߩࠨࠗ࠻ߣ㉄⚛ߩߺ߇㈩૏ߒߡ޿ࠆ࠙࡜ࡦߩࠨࠗ࠻߇౒ሽߔࠆ㍲૕ [{UO2(acac)2(4-tmp)}{UO2(acac)2(H2O)}]•CH3OH ߣ޿ߞߚ‫ޔ‬ᢙᄙߊߩ⓸⚛߇㈩૏ߒߚ࠙࡜࠾࡞(VI)㍲૕߇ႎ๔ߐࠇߚ‫ޕ‬[UO2(acac)2(4-Etpy)]㍲૕ߪ py ㍲૕߿ 4-Mepy ㍲૕ߣห᭽ߩ᭴ㅧࠍߒߡ߅ࠅ‫ޔ‬U(VI) ๟ࠅߩࠕࠠࠪࠕ࡞૏ߦ࠙࡜࠾࡞ߩ 2 ߟߩ㉄⚛߇㈩૏ߒ‫࡞ࠕ࡝࠻ࠕࠢࠛޔ‬ᐔ㕙ߦ‫ޔ‬acac ߩ 4 ߟߩ㉄⚛ේሶߣ
4-Etpy ߩ ࡇ ࡝ ࠫ ࡦ ߇ ㈩ ૏ ߒ ߚ ੖ ᣇ ਔ ㍙ ဳ 7 ㈩ ૏ ㍲ ૕ ߢ ޽ ߞ ߚ ‫ ޕ‬ⓨ 㑆 ⟲ ߪ P-1 ߢ ޽ ࠅ ‫ޔ‬[UO2(acac)2(4-Mepy)] ߣߪหߓߢ޽ࠆ߇‫[ޔ‬UO2(acac)2py] ߩ Fdd2 ߣߪࡄ࠶ࠠࡦࠣߩ᭽ᑼ߇ᄢ߈ߊ
⇣ߥߞߡ޿ߚ‫ࡦࠫ࡝ࡇޔߪࠇߎޕ‬ⅣߩJ૏ߦ޽ࠆࡔ࠴࡞ၮ߿ࠛ࠴࡞ၮߩᓇ㗀ߢ‫[ޔ‬UO2(acac)2py] ࠃࠅ߽‫[ޔ‬UO2(acac)2(4-Mepy)] ߿ [UO2(acac)2(4-Etpy)] ߩಽሶ⴫㕙Ⓧ߇ᄢ߈ߊߥߞߚὑߣ⠨߃ࠄࠇࠆ‫ޕ‬ᧄ⎇ⓥߢ᭴ㅧࠍ᣿ࠄ߆ߦߒߚ 4-Etpy, nic ㍲૕ߩၮᧄ᭴ㅧߪ‫ޔ‬ᣢ⍮ߩ py, 4-Mepy, 2,4-dmpy ߣห᭽ߢ‫ޔ‬U(VI) ߩࠕࠠࠪࠕ࡞૏ߦ࠙࡜࠾࡞ߩ㉄⚛߇㈩૏ߒߡ⋥✢⊛ߥ UO22+ 㛽ᩰࠍ૞ࠅ‫ޔ‬U(VI) ߩࠛࠢࠕ࠻࡝ࠕ࡞ᐔ㕙ߦ 2 ߟߩ acac ߇ࠠ࡟࡯࠻㈩૏ߒߡࡇ࡝ࠫࡦⅣ߇ 1 ߟ㈩૏ߒߚ੖ᣇਔ㍙ဳ 7 ㈩૏㍲૕ߢ޽ߞߚ‫ߩࠇߕ޿ޔߚ߹ޕ‬㍲૕ߢ߽‫ޔ‬U-N 〒㔌ߩᣇ߇ࠛࠢࠕ࠻࡝ࠕ࡞ᐔ㕙ߩ U-O 〒㔌ࠃࠅ߽㐳޿‫⚛⓸ޔߦ৻╙ޔߪࠇߎޕ‬ේሶߪ㉄⚛ේሶࠃࠅ߽౒᦭⚿วඨᓘ߇㐳޿੐߇ේ࿃ߢ޽ࠆߣ⠨߃ࠄࠇࠆ‫╙ޕ‬ੑߦ‫ߩߐ⎬ޔ‬㆑޿ߦࠃࠆ߽ߩߣ⠨߃ࠄࠇ‫޿⎬߽ࠅࠃ⚛⓸ߪࡦ࡜࠙ޔ‬Ⴎၮߢ޽ࠆ㉄⚛
ߣࠃࠅ⋧ᕈ߇޿޿ߣ⠨߃ࠄࠇࠆ‫ޔߚ߹ޕ‬U-Oacac 〒㔌߿‫ޔ‬U=O 〒㔌ߦᄢ߈ߥᏅߪ⷗ࠄࠇߥ߆ߞߚ‫ޕ‬ ࡇ࡝ࠫࡦⅣ߇㈩૏ߒߚ㍲૕ߦߟ޿ߡ‫ ߽ࠇߕ޿ޔ‬acac ߩ㉄⚛ߣࡇ࡝ࠫࡦⅣߩ⓸⚛߇૞ࠆࠛࠢࠕ
࠻࡝ࠕ࡞ᐔ㕙ߪ㜞޿ᐔ㕙ᕈࠍᜬߜ‫ޔ‬U(VI) ߽ߎߩᐔ㕙਄ߦ߶߷ሽ࿷ߔࠆ‫ࡦࠫ࡝ࡇޕ‬Ⅳߩ 4-૏ߦ஥㎮߇ઃ޿ߚ㈩૏ሶࠍᜬߟ 4-Etpy ㍲૕ߩ py twist ߪ‫ޔ‬หߓߊࡇ࡝ࠫࡦⅣߩ 4-૏ߦ஥㎮߇ઃ޿ߚ㈩૏ሶࠍᜬߟ 4,4’-bpy, 4-Mepy ㍲૕߿‫ޔ‬஥㎮ߩή޿ py ㍲૕ߣห⒟ᐲߢ޽ߞߚ‫ޔߒ߆ߒޕ‬3-૏ߦ߆ߥࠅ፾㜞޿஥㎮ࠍᜬߟ nic ㍲૕ߩ py twist ߪ‫ޔ‬py ㍲૕╬ࠃࠅ߽ᄢ߈ߊ‫ޔ‬2-૏ߦ஥㎮ࠍᜬߟ
2,4-dmpy ㍲૕ߩ py twist ߪ‫ߦᦝޔ‬ᄢ߈޿‫ ޕ‬એ਄ߩ੐߆ࠄ‫[ޔ‬UO2(acac)2] ࡈ࡜ࠣࡔࡦ࠻ߦ 2,2’-bpy߿ terpy ╬ߩࡇ࡝ࠫࡦⅣߩD૏ߦ፾㜞޿஥㎮ࠍᜬߟ㈩૏ሶߪ㈩૏ߢ߈ߥ޿ߣ⠨߃ࠄࠇ‫ޔ‬U(VI) ߦ⓸⚛߇ 2 ߟએ਄㈩૏ߒߚ㍲૕ߩวᚑߦ acac ࠍ U ߦ㈩૏ߐߖࠆߩߪᲧセ⊛㔍ߒ޿ߩߢߪߥ޿߆ߣ
⠨߃ࠄࠇࠆ‫ޕ‬Preparations and crystal structures for uranyl(VI) coordination compounds with chelate ligands
Kitazawa, T., Kawasaki, T− 94 −

1P40
2

ᬀ‛ߩ㙃ಽๆ෼ߦ߅ߌࠆ㧾㧵࡝ࠕ࡞࠲ࠗࡓࠗࡔ࡯ࠫࡦࠣⵝ⟎ߩ㐿⊒᧲ᄢ㒮ㄘ↢⑼ ٤ਛ⷏෹ሶ‫ޔ‬ጊ⣁ᱜੱ‫⩲ޔ‬㊁㉿⟤‫ޔ‬⍹ᯅᒄⷙ䇮↰㊁੗ᘮᄥᦶ

‫ޤߦ߼ߓߪޣ‬૞‛ߩ㙃ಽๆ෼ߪㄘᬺ⃻႐ߦ߅ߌࠆᬀ‛↢⢒ߦᄢ߈ߥᓇ㗀ࠍਈ߃ࠆߦ߽㑐ࠊࠄߕ‫ޔ‬ᬀ‛߇޿ߟߤߩࠃ߁ߦ㙃ಽࠍๆ෼ߔࠆ߆ߪ߶ߣࠎߤ್ߞߡ޿ߥ޿‫ޕ‬ᬀ‛ߩ㙃ಽๆ෼േᘒ߇นⷞൻߐࠇ߆ߟ⸃ᨆߔࠆߎߣ߇ߢ߈ࠇ߫ᬀ‛↢ℂቇߩߺߥࠄߕ‫⃻ޔ‬႐ߦ߅ߌࠆ૞‛↢↥ߦᄢ߈ߥᓇ㗀ࠍਈ߃ࠆߎߣ߇ߢ߈ࠆߣ੍ᗐߐࠇࠆ‫ߩߘߪߡ޿ߟߦࠣࡦࠫ࡯ࡔޕ‬ᛛⴚ㐿⊒߇ㄭᐕ⋡ⷡߒߊ‫ޔࡦࠝࠗޔ‬ൻว‛ߩߺߥࠄߕ‫⚦ޔ‬⢩ེቭߩേ߈ߥߤ߽⋡ߢ⷗߃ࠆࠃ߁
ߦߥߞߡ߈ߚ‫⎇‛↢ޔߒ߆ߒޕ‬ⓥߢ↪޿ࠄࠇࠆࠗࡔ࡯ࠫࡦࠣߩ߶ߣࠎߤ߇Ⱟశ⦡⚛߿Ⱟశࡊࡠ࡯ࡉߥߤࠍ↪޿ߡ޿ࠆߚ߼‫ޔ‬ቯ㊂⊛ߥ⸃ᨆࠍⴕ߁ߎߣߪ㕖Ᏹߦ࿎㔍ߢ޽ࠆ‫ޕ‬᡼኿✢ࠍ↪޿ࠆ࡝ࠕ࡞࠲ࠗࡓࠗࡔ࡯ࠫࡦࠣߪ‫ޔ‬ਛᕈሶ✢ࠍߪߓ߼ߣߔࠆ㊂ሶࡆ࡯ࡓߩ೑↪ߥࠄ߮ߦ㧼㧱㨀(Positron Emission Tomography)ߥߤ߇ⴕࠊࠇߡ޿ࠆ߽ߩߩ‫߽ࠇߕ޿ޔ‬ᄢဳ⸳஻ࠍᔅⷐߣߔࠆߚ
߼ᚻㄭߥ㧾㧵ታ㛎ቶߢⴕ߁ߎߣ߇ߢ߈ߥ޿‫⑳ޔߢߎߘޕ‬㆐ߪᏒ⽼ߩǪ✢᡼಴ᩭ⒳㧔㧟㧞㧼‫ޔ‬㧟㧡㧿‫ޔ‬㧠㧡㧿ߥߤ㧕ࠍ↪޿ࠆ‫ޔ‬㧾㧵࡝ࠕ࡞࠲ࠗࡓࠗࡔ࡯ࠫࡦࠣⵝ⟎ࠍ㐿⊒ߒߚߩߢႎ๔ߔࠆ‫ޕ‬‫ޣ‬ታ㛎ᣇᴺ࡮⚿ᨐ‫⎇ᧄ ޤ‬ⓥߢߪᩮ߆ࠄๆ෼ߐࠇߚ㙃ಽ߇࿾਄ㇱ߳ߤ߁ㆇ߫ࠇࠆ߆ࠍนⷞൻߔ
ࠆ‫ޔ‬ᬀ‛୘૕ో૕ࠍࠗࡔ࡯ࠫࡦࠣߔࠆ㧾㧵ࡑࠢࡠࠗࡔ࡯ࠫࡦࠣⵝ⟎‫Ⱟޔߦ߮ࠄߥޔ‬శ㗼ᓸ㏜
ߢ᡼኿✢௝߽หᤨߦขᓧߢ߈ࠆ㧾㧵ࡒࠢࡠࠗࡔ࡯ࠫࡦࠣⵝ⟎ࠍ㐿⊒ߒߡ޿ࠆ߇‫੹ޔ‬࿁ߪࡑࠢࡠⵝ⟎ߦߟ޿ߡႎ๔ߔࠆ‫ޕ‬Ꮢ⽼ߩǪ✢᡼಴ᩭ⒳ࠍ᳓⠹ᶧߦᷝടߒߡᩮ߆ࠄๆ෼ߐߖ‫ޔ‬ᬀ‛߆ࠄ᡼಴ߐࠇࠆǪ✢ࠍ‫࠻࡯࡟ࡊ࡮ࠢ࠶ࠖ࠹ࡊࠝ࡮࡯ࡃࠗࠔࡈߚߖߐ⌕⫳ࠍ࠲࡯࡟࠴ࡦࠪޔ‬㧔㧲㧻㧿㧕ߦࠃࠅశߦᄌ឵ߐߖߚ‫ߩߘޕ‬ᓸᒙశࠍ GaAsP ࠗࡔ࡯ࠫ࡮ࠗࡦ࠹ࡦࠪࡈࠔࠗࠕ࡯ࠍㅢߒ‫ޔ‬㜞ᗵᐲ㧯㧯㧰ࠞࡔ࡜㧔ᵿ᧻ࡎ࠻࠾ࠢࠬ‫ޔ‬AQUACOSMOS/VIM㧕ߢ↹௝ൻߒߚ‫࠲࡯࡟࠴ࡦࠪޕ‬ߩ⒳㘃ࠍᬌ⸛ߒߚ⚿ᨐ‫ ߿࠲࡯࡟࠴ࡦࠪࠢ࠶ࠖ࠹ࠬ࡜ࡊޔ‬CaF ࠃࠅ߽ CsI(Tl)ߩଥᢙല₸߇㜞ߊ‫ޔ‬․ߦǪ✢ࠛࡀ࡞ࠡ࡯߇ૐ޿㧝㧠㧯ߩ႐วߦߪ‫ޔ‬CsI(Tl)ߪ CaF ࠃࠅ߽ᬌ಴ᗵᐲ߇㧟୚߶ߤ㜞߆ߞߚ‫ߩ࠲࡯࡟࠴ࡦࠪߚ߹ޕ‬ෘߐߪ‫ޔ‬㧝㧠㧯ߢߪᓎ 25Ǵ㨙‫ޔ‬㧠㧡㧯㨍ߩ႐วߦߪ⚂ 100Ǵm ߢ⦟ᅢߥ↹௝ࠍᓧࠆߎߣ߇ߢ߈ߚ‫ޕ‬ಽ⸃⢻ߪ⚂ 100Ǵm‫ޔ‬ᬌ಴㒢⇇ߪ㧟㧞P ߢ 0.5Bq/mm2 ߢ޽ࠆ߇‫ޔ‬ᬌ಴ᗵᐲߪࠗࡔ࡯ࠫࡦࠣࡊ࡟࡯࠻㧔IP㧕ࠃࠅ߽ 10 ୚એ਄㜞ߊߥߞߚ‫ޕ‬㧠㧡Ca ࠍᩮ߆ࠄๆ෼ߐߖߚ
࠳ࠗ࠭ߩ⪲ߦߟ޿ߡ↹௝ࠍขᓧߔࠆߣ‫ߢࡓ࠹ࠬࠪᧄޔ‬㧝ಽ㑆Ⓧ▚ߒߡᓧࠄࠇߚ↹௝ߪ IP ߦ 15ಽ㑆ࠦࡦ࠲ࠢ࠻ߐߖߡᓧࠄࠇߚ↹௝ߦ඘ᢜߔࠆߎߣ߇␜ߐࠇߚ‫ߩ࠭ࠗ࠳ޕ‬ᩮߦ㧟㧞P ᮡ⼂࡝ࡦ
㉄ 37Bq/30ml)ࠍๆ෼ߐߖߚߣߎࠈ‫ߦ❱⚵޿⧯ޔߕ߹ޔ‬ఝవ⊛ߦ࡝ࡦ㉄߇⒖ⴕߒ‫ޔ‬ฦ▵ߥࠄ߮ߦ⪲⣂ߩಽጘὐߢ࡝ࡦ㉄߇৻ᤨ⊛ߦ⫾Ⓧߐࠇࠆߎߣ߇್ߞߚ‫ߩ࠭ࠗ࠳ޔߦࠄߐޕ‬ೋ⪲ߥࠄ߮ߦᧄ⪲ߦ߅޿ߡ࡝ࡦ㉄ߪ⪲⣂ߦᴪߞߡ⒖ⴕߒߚ߽ߩߩ‫⪲ߪߡߞࠃߦ⪲ޔ‬⣂㑆ߦࠬࡐ࠶࠻⊛ߦ
ᄙ㊂ߦ⫾Ⓧߔࠆ႐ว߽␜ߐࠇߚ‫ߩࡗࠨߕ߹ޔߪߡ޿߅ߦࡗࠨߩ࠭ࠗ࠳ߛ߹ޕ‬ਅㇱߦ࡝ࡦ㉄߇⫾Ⓧߒ‫ࡗࠨޔ‬ਛߩ⒳ሶߦߪ‫ߣࡗࠨޔ‬ធ⛯ߒߚ෻ኻ஥߆ࠄ⫾Ⓧߐࠇߡ޿ߊߎߣ߇␜ߐࠇߚ‫↹ޕ‬௝⸃ᨆ⚿ᨐ߆ࠄ‫ࡗࠨޔ‬ਛߩฦ⒳ሶߦߪ߶߷ห㊂ߩ࡝ࡦ㉄߇หᤨᦼߦ⒖ⴕߔࠆߎߣ್߽ߞߚ‫ޕ‬߹ߚ‫ߚ޿↪ࠍࡀࠗޔ‬㧝㧠C ᮡ⼂ࠣ࡞࠲ࡒࡦๆ෼ߦ߅޿ߡߪ‫ޔ‬ṁᶧਛ߆ࠄᩮߦๆ෼ߐࠇࠆࠣ࡞࠲
ࡒࡦ‫ߦ߮ࠄߥޔ‬ᩮਛߩࠣ࡞࠲ࡒࡦേᘒ߽วࠊߖߡ⸃ᨆ߇ߢ߈ࠆߎߣ߇␜ߐࠇߚ‫ޕ‬‫ޤߦࠅࠊ߅ޣ‬㐿⊒ߐࠇߚᧄࠪࠬ࠹ࡓߦࠃࠅ‫ߢࡓࠗ࠲࡞ࠕ࡝ޔ‬ᬀ‛߇㧟㧞P ߥࠄ߮ߦ㧟㧡S ߢᮡ⼂ߐࠇߚൻว‛߿ࠗࠝࡦ߇ߤߩࠃ߁ߦᩮߦๆ෼ߐࠇ߹ߚ࿾਄ㇱߦએ㒠ߔࠆ߆ࠍታ㓙ߩേ↹ߣߒߡ⷗ࠆߎߣ߇น⢻ߣߥߞߚ‫↹ߚ߹ޕ‬௝⸃ᨆߦࠃࠅ‫ޔ‬㙃ಽๆ෼ㆊ⒟ߩቯ㊂⊛ߥᬌ⸛߇น⢻ߣߥߞߚ‫ᦨޕ‬ᓟߦ‫ߦ࠭ࠗ࠳ޔ‬ๆ෼ߐࠇߚ࡝ࡦߩൻቇ♽ࠍ⺞ߴߚߣߎࠈ‫ޔ‬⍴ᤨ㑆ߢๆ෼ߐࠇߚ࡝ࡦ
ߦߟ޿ߡߪήᯏ࡝ࡦߩᒻᘒߢ⒖ⴕߒߡ޿ࠆߎߣ߇␜ߐࠇߚߎߣࠍઃߌട߃ߚ޿‫ޕ‬Development of real-time RI imaging system for plant nutrient uptake.
NAKANISHI, T.M., YAMAWAKI, M., KANNNO, S., ISHIBASHI, H., TANOI, K.
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