㻌
㻌◊✲Ⓨ⾲せ᪨㻌㻌䠕᭶䠍䠍᪥䠄ᮌ䠅㻌㻌
1A01䡚1A17㻌 A ఍ሙ㻌
1B01䡚1B13㻌 B ఍ሙ㻌
㻌

1A01

134 MeV !"# 184 MeV $%&'()"* Cu+Nb ,-./01(!"#$ 1%&"' 2%KEK3%JAEA4%$( 5%Purdue Univ.6%Univ. California7)!)*+, 1%-./0 1%1234 1%5678 1%9:;< 1%=>3? 1%@.A 1%B6C 2%DEF 2%>GH 3%I.JK 3%LMNO 4%P-"Q 4%
RST/ 5%M.W.Caffee6%UVW, 7

XYZ[ 9\]^_`abcdef%ghijklmn"oapqer)stiu;lmv
wxypqeizm{|}f%9\]^_`bcde~lm%l imgh%"adeagi%1aa ¡
¢kq{£au;r¤wlvpqeizm{|}f%¥¦ MeV §¨a©ª«f¬­a(®~¯x°m~%z±9\]^_`a©ª%²i 100 MeV r³´m\]^_`rµ¶pqei
zm(®f·n¸¹º¸«°°v6(®»^`¼f%pqea\]^_`½¾¿À^~%pqerÁu¯Âm/sÃ`Ä«ÅmÆeajkÇÈi"É­ ¡lmwnrÊË
%ÌÍtiÎÏapqe;ÐrÑ±ÒlÇÓiz±[1]%9\]^_`pqeizm{|}ÔÕÖa×rØÙÉÚ[2]v6ÁÛ«f%Cu zÜ Nb rÝtn 134 zÜ 184 MeV
pqeizm{|}ÔÕÖa×rØÙÚa«Þßlmv
Xàá[ pqeâkàáf%"!"ã{g$(®äåæ`N0 Ã`Äçèåi°ØÙÚv
200 MeV zÜ 140 MeV aÆer Li æ`éêÀënâk%ÆeajkÇÈi 0°n
25°i natCu zÜ 93Nb aìíîrïÚvwxyaðñiu;Úòóôa¢kq{£ré^õö÷ÄøùúÒ«o%)¶aðñ«au;orûülmwnizÙ%pý\]^_`134 MeV zÜ 184 MeV apqeizm{|}ÔÕÖrþÚv
Xÿ![ "#i/$n%natCu(x, y)56Mn |}a%¤B¦r&lv'(a×ÿ!f%)*a+,a(®iz±-yxÚz±9\]^_`©ªa{|}ÔÕÖa.n[3]%Kim yizm/\]^_`©ªaÿ![4]r¶0.~-yxÚv
1ÚÆena{|}ÔÕÖn2lmn%/\]^_`3«fpqeizm{|}aÔÕÖa.~"É­%jk\]^_`a4i5°6~7¯­mn°8ÿ!~-yxÚv6(®iz± Cu zÜNb a9Çi¶°%20 r³´m{£au;ÔÕÖ
~-yx±%wxya:;f<=«ÁÛlmv
X>!!"[[1] J. M. Sisterson et al., NIM B240 (2005) 617[2] K. Ninomiya et. al., Proc. Radiochim. Acta., 1(2011) 123[3] K. Ninomiya et. al., APSORC-13 (2013),"##ÆeâkzÜpqeâki25-NCP-04
zm natCu(x, y)56Mn |}a%¤B¦[4] E. J. Kim et al., Nucl. Sci. Technol. 36 (1999) 29[5] S. J. Mills et al., Appl. Radiat. Isot. 43 (1992) 1019,
L. R. Greenwood et al., U.S. Dept.of Energy, Fusion Energy Series 0046 18 (1984) 11
Neutron-induced nuclear reactions for Cu and Nb target at 134 and 184 MeV
NINOMIYA, K., FUJIHARA, K., YASUI, R., OMOTO, T., TAKAHASHI, N., KASAMATSU, Y.,
SHINOHARA, A., SEKIMITO, S., YASHIMA, H., MATSUMURA, H., HAGIWARA, M.,
IWAMOTO, Y., SATOH, D., SHIBATA, S., CAFFEE, M. W., NISHIIZUMU, K..

- 29 -1A02

GARIS ! "#$%&'()*+,-./ 248Cm+48Ca0 296Lv*
123456("#$%& 1'()*"+ 2',)*"+ 3'-")*"+ 4'.)*/ 5'()
" 6'IMP7'GSI8'0)" 9'12345 10) 678)9 1':;<= 1'>?@A 1'BCDE 1'F(GH 1,2'(IJKL 1,3'MNOP 1,4'QRSTU 1'
M. Huang1'VRWX 1'YZ[\ 1,5']M^ 1'_M` 1'(abc 3'def
g 1,6'_MhG 1,6'Z.Gan7'L. Ma7'H. Geissel8'S. Hofmann8'Y. Maurer8'i
MjT 1,9'klmn 1,9'MNDb 1,9'(;op 1,9'qrst 10'uvwx 1':Myz 1,9

7
89:17{ |}~  248Cm+48Ca!296Lv*Ek Ek
 GARIS ;# '¡¢£¤v¥¦§¤¨©ª« ¬­®¯kL°'±²³´µ¶|}~ ¬­®
¯kv¥¦§·)*+,-#-./0#;<{ ¸¹ º"#¬»¼½¾7¿ÀÁÂ¤ÃÄÅÆ¸¹ÇÈÉÊË
Target: 290 µg/cm2 248Cm2O3 on 2 µm Ti backing
Projectile: 249.6 MeV@ÌÍNÎ 48Ca11+
Intensity: I = 0.92 pµA
Total dose: 4.3×1018
Magnetic rigidity: 2.17 Tm
Filled gas: pure He at P = 73 Pa

B;8CC#C:3789#>DEA#

'%#

'#

*F,/-#

'%#

&9#

$9#

%#

!9#
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('#

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$%#

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&%#
&"#
123456789#:9:;<=#>?:@A#

"%#

""#

% 1{ ûüýþÞÃ# [1-3]´¶ÐÑ

6: 4n, 7: 3n
=>?@A7{ Cold fusion  Z=113 ¸¹Ï¶ trigger rate =2~3 cps (0.5 pµA 70Zn beam)´ÐÑ 75cps (0.9 pµA 48Ca beam)´ÒÓ~¤ÔÕ'10 Ö×ØÙÚÛ¶ÜÝ´'ÞÃ# (Dubna-Livermore ßà#áªâ[1,2]´ GSI SHIP ßà#áªâ[3])
ãäJ¢åæ¶´çèàéÆêëìí 5 îïðñ3 îï ÞÃ#¤ 4n ´'
2 îï 3n ´àòJ¢åæ¶¤ÔGARIS ¶óôõö 36%´÷ò´'Ekøùú σ = 3.2+2.9-1.8 pb for 4n, σ = 2.1+2.8-1.4 pb for 3n ´ÆãäJ¢åûüýþ´ÐÑ´ÿ!"#$¥(% 1)'&°¢êëìí à"ü'¤Ô´()°¢L
ÆÕ°'*+ α,ý¶Æå/-. 3 îï/¶0ðñå1Û23ª4"5¤LñòÆL6'*+/7¶ÜÝ·8¤9¶àò ¤¨Æå:;'ûüýþñò¥'*+/7¶ÜÝL°9àò<='ÞÃ#¶>!"¨#¨Ã$%ò¤Ô{ ;ãä¤ 'GARIS ¶|}~ &'(()*õöK+},á-.
«)/016'&°¢êë2'3å45

B@CD7[1] Yu. Ts. Oganessian et al., Phys. Rev. C70, 064609 (2004).
[2] Yu. Ts. Oganessian et al., JINR preprint, E7-2004-160,p.1 (2004).
[3] S. Hofmann et al., Eur. Phys. J. A48, 62 (2012).
Study on hot fusion reaction of 248Cm+48Ca!296Lv* using GARISKAJI, D., MORIMOTO, K., HABA, H., WAKABAYASHI, Y., TAKEYAMA, M., YAMAKI, S.,TANAKA, K., HASEBE, H., HUANG, M., KANAYA, J., MURAKAMI, M., YONEDA, A., YOSHIDA,
A., YAMGUCHI, T., TOKANAI, F., YOSHIDA, T., GAN, Z., Ma, L., GEISSEL, H., HOFMANN, S.,
MAURER, Y., FUJITA, K., NARIKIYO, Y., TANAKA, T., YAMAMOTO, S., ASAI, M., KATORI, K.,
MORITA, K.

- 30 -

1234+)!"#$%&'()*(+!"#,-&'()*཯ᛂ࡟ࡼࡿ ./(+0" ྠ఩యࡢບ㉳㛵ᩘᐃ᪂₲኱㝔⮬↛ ࠊ⌮◊ோ⛉ࢭ ࠊ᪂₲኱⌮  ‫ۑ‬ᮧୖᫀྐ ࠊ⩚ሙᏹග ࠊ㯤᫂㍤ ࠊᚋ⸨┿୍ ࠊᕤ⸨ஂ᫛ ))䛆⥴ゝ䛇) ㉸㔜ඖ⣲ࡢ໬Ꮫ◊✲࡛ࡣࠊࡑࡢ㍍࠸ྠ᪘ඖ⣲ࡢᨺᑕᛶࢺ࣮ࣞࢧ࣮ࢆ⏝࠸ࡓᇶ♏ᐇ㦂ࢆ⾜࠸ࠊ┠ⓗ࡜ࡍࡿ㉸㔜ඖ⣲ࡢ໬Ꮫᐇ㦂࡟㐺ࡋࡓ᮲௳ࢆணࡵㄪᰝࡍࡿࠋFGH ␒ඖ⣲ࢻࣈࢽ࣒࢘
6E18ࡢ໬Ꮫ◊✲࡟࠾࠸࡚ࡣࠊ༙ῶᮇࡀẚ㍑ⓗ㛗࠸ IHJ01)6TFKL)M)NH)/8࡜ FOI2&)6TFKL)M)F@PL)Q8ࡀ᭷⏝࡞ࢺ࣮ࣞࢧ࣮࡜࡞ࡿࠋᡃࠎࡢࢢ࣮ࣝࣉ࡛ࡣ E1 ࡢ໬Ꮫᐇ㦂࡟ྥࡅࡓᇶ♏◊✲RF7LSࢆ㐍ࡵࡿ࡜࡜ࡶ࡟ࠊࡇࢀࡽࡢᐇ㦂࡛⏝࠸ࡿ IHJ017)FOI2& ࢆຠ⋡ⓗ࡟〇㐀ࡍࡿࡓࡵ࡟ࠊFT):3U ࡢ㝧Ꮚࣅ࣮࣒ࢆ
⏝࠸ࡓ (&%5-6.7"87)(&%9*6.7"8཯ᛂ࡟ࡼࡿ 017)2& ྠ఩యࡢ⏕ᡂ᩿㠃✚࡜཰㔞࡟ࡘ࠸࡚ㄪᰝࡋ࡚ࡁࡓ
RNSࠋᮏ◊✲࡛ࡣࡉࡽ࡟ࠊLT) :3U ࡢ㔜㝧Ꮚࣅ࣮࣒ࢆ⏝࠸࡚ 017) 2& ྠ఩యࡢ⏕ᡂ᩿㠃✚ࢆ ᐃࡋࡓࡢ࡛ሗ࿌ࡍࡿࠋ)䛆ᐇ㦂䛇ձ(&%5- ⟩6VII@PW7)FI)!X8ࠊ(&%2$ ⟩6II@HW7)LG)!X8࡜ (&%2& ⟩6II@IHW7)FI ࡲࡓࡣ FG)!X8)FHᯛࡎࡘ࠾ࡼࡧղ(&%9* ⟩6IOW7)LN)!X8)FI ᯛ࡜ (&%2$ ⟩6II@HW7)LG)!X8)FI ᯛࡢࢫࢱࢵࢡ࡟ࠊ
⌮◊ =UYࢧ࢖ࢡࣟࢺࣟࣥ࠿ࡽ౪⤥ࡉࢀࡿ LT):3U ࡢ㔜㝧Ꮚࣅ࣮࣒ࢆࡑࢀࡒࢀ NG ศ㛫↷ᑕࡋࡓࠋ(&%2$ ⟩ࡣࣅ࣮࣒ࣔࢽࢱ࣮ࠊ(&%2& ⟩ࡣ࢚ࢿࣝࢠ࣮ࢹࢢ࣮ࣞࢲ࣮࡜ࡋ࡚౑⏝ࡋࡓࠋ(&%2$6/7"8TPU ࣔࢽࢱ࣮཯ᛂ࡟ࡼࡾồࡵࡓᖹᆒࣅ࣮࣒㟁ὶࡣࠊ5-K2$K2& ࢫࢱࢵࢡ࡟ࡘ࠸࡚ G@TI)!=ࠊ9*K2$ ࢫࢱࢵࢡ࡟ࡘ
࠸࡚ G@TZ) != ࡛࠶ࡗࡓࠋ↷ᑕ⤊஢ᚋࠊྛᶆⓗ⟩࡟ࡘ࠸࡚ B3 ᳨ฟჾࢆ⏝࠸ࡓ"⥺ࢫ࣌ࢡࢺ࣓ࣟ
ࢺ࣮ࣜࢆ⾜ࡗࡓࠋ)䛆 ⤖ ᯝ 䛸 ⪃ ᐹ 䛇 㻌 (&%5-6/7"8 ཯ ᛂ ࡟ ࠾ ࠸ ࡚ ࡣ )IGJ7IFX7ILX7IHX7IHJ7IZ017)IH7IO5-7)POX7POJ7PP[ࠊ(&%9*6/7"8N336&8)73618)
཯ᛂ࡛ࡣ FOH7FOZ7FOP7FOI7FPGJ2&7) FOH7FOIXL7FPGX7FPF9* ࡢ
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ࡢ᩿㠃✚ࡣᮏ◊✲࡟࠾࠸࡚ึࡵ࡚ ᐃࡉࢀ
89:#9%;!+9!9%<=+&>9?*
89:#9%;!+9!9%<=+&>9?*)ࡓࠋບ㉳㛵ᩘࡣ LF@F)#)G@T):3U ࡟࠾࠸࡚᭱኱ᅗ F@)6&8)(&%5-6/7"8IHJ017)618)(&%9*6/7"8FOI2& ཯ᛂࡢບ㉳㛵ࡢ᩿㠃✚ TPI)#)HG)X1 ࢆ♧ࡋࡓࠋ2=\[D]F@Tᩘࠋ)ࢥ࣮ࢻRTS࡟ࡼࡿ⌮ㄽィ⟬ࢆ ᐃࡋࡓྛྠ఩
యࡢ᩿㠃✚࡜ẚ㍑ࡋࡓ࡜ࡇࢁࠊ
඲యⓗ࡟ࡼ࠸
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ࡶࡢࡢࠊ ᐃ್࡜ࡢ୍⮴ࡣぢࡽࢀ࡞࠿ࡗࡓࠋ ᐃࡋࡓ᩿㠃✚࡟ᇶ࡙࠸࡚ぢ✚ࡶࡗࡓ IHJ01)6LN@Z):3U ࡲ࡛8࡜ FOI2&)6LN@H):3U ࡲ࡛8ࡢ✚⟬཰㔞ࡣࡑࢀࡒࢀ G@NO):A^K!=47)G@LF):A^K!=4 ࡛࠶ࡗࡓࠋ)䛆ཧ⪃ᩥ⊩䛇)$%&'()* E7<./+0FCA+G;%H+0"%H"!=C+9#+"IJ+&5336*+02KLM+&<*!"#@%;AA+A9B#C;!+&D/*@%;AA+A9B#C;!+&D/*!"#,-&'()* 1OE0"+0FCA+G;%H+02KLM

RFS):@):+-&_&X$)3%)&`@7)=aDC<bFN)LT]0ba]GO)6LGFN8@) )RLS)D@)2,+%')3%)&`@7)<?>!0)=##3`@)a-'J@)<3.@)!"7)$().-3,,@)
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C@)A3-,$``'()3%)&`@)6!Ea)D#$3(#3,7)LGGP8).@)LFF@) )!"#$%&%$'()*+(#%$'(,)*'-).-'/+#%$'()'*)01)&(/)2&)$,'%'.3,)$()%43)(&%5-6/7"8)&(/)(&%9*6/7"8)-3&#%$'(,):;<=>=:?7):@7)9=A=7)9@7)9;=0B7):@7)BC2C7)D@7)>;EC7)9@)- 31 -

1A04

On the improvement of material properties and performance of nuclear targets(Advanced

ScienceResearchCenter,

JAEA1,

UniversityofMainz2,

Helmholtz-Zentrum Dresden Rossendorf, HZDR3, Helmholtz Institute Mainz4, GSI
Helmholtzzentrum für Schwerionenforschung5, European Commission, Institute forTransuranium Elements6, Technical University Dresden7) Vascon A.1,2,3, Wiehl N.2,4,
Runke J.5, Drebert J.2, Reich T.2, Trautmann N.2, Cremer B.6, Kögler T.3,7, Beyer R.3,
Junghans A.R.3, Eberhardt K.2,4, Düllmann Ch.E.2,4,5The success of nuclear science experiments depends to a large extent on the used targets. Molecular
plating (MP) is one of the most widely applied methods for the production of thin layers to be used astargets for accelerator and reactor science. The element of interest is electrodeposited from an organic
medium either in the constant current or in the constant voltage mode and layers of acceptableuniformity are quickly produced with quantitative yields. To date, drawbacks of the MP technique havebeen mainly related to the properties of the produced layers, which are frequently defective, with surface
cracks, and sometimes with poor structural rigidity (see Figure 1a). Such properties negatively affect theexperiments to be performed, especially the irradiation ones. For these reasons, in the last years efforts
have been undertaken to improve the quality of the obtained layers. Constant current density electrolysis
experiments have been performed with lanthanides as model elements for the studies. Plating
parameters like roughness of the deposition substrate, plating solvent, electrolyte concentration, andapplied current density have been varied and their effects on the material properties of the produced
targets have been investigated with multiple characterization techniques. The combined use of assmooth as possible substrates (e.g., Ti-coated Si wafers) and low volatility solvents (e.g.,
N,N-dimethylformamide -DMF-) has turned out to be effective for the production of smooth defect-freelayers (see Figure 1b). The comparison between the performance of these layers and conventional MP
targets has been studied in ! spectroscopy experiments with sources containing 147Sm (!, T1/2 = (1.070 ±0.009) · 1011 y). Improvements in relative detection efficiency of as much as 15% have been achieved.
In the symposium, the plating parameters that have a crucial influence on the material properties andperformance of nuclear targets will be discussed. Results of the application of the optimized MP
procedure to the production of actinide targets (i.e., Pu) will be also shown.

(a)

(b)

Figure1.

147

Sm layers

grown on Ti-coated Si
wafers using pyridine a)and DMF b) as plating
solvents.

On the improvement of material properties and performance of nuclear targets
Vascon A., Wiehl N., Runke J., Drebert J., Reich T., Trautmann N., Cremer B., Kögler T., Beyer R.,
Junghans A.R., Eberhardt K., Düllmann Ch.E.
- 32 -

1A05㉁㔞ᩘ ௜㏆࡟࠾ࡅࡿ Sࣉࣟࢭࢫゎ᫂࡟ྥࡅࡓ⣲㐣⛬ࡢ◊✲ձ
̿6P ȚS ཯ᛂ࡜㏫㐣⛬̿ΎỈᘓタ ࠊி኱⅔ ࠊ㧗࢚ࢿ◊ ࠊ㔠ἑ኱ //5/ࠊ㔠ἑ኱⌮ᕤ  ‫ۑ‬ᮌୗဴ୍ ࠊ㛵ᮏಇ ࠊ኱ᵳ໅ ࠊᱝᮏ࿴⩏ ࠊ὾ᓥ㟹඾ ࠊᶓᒣ᫂ᙪ  ⌧ᅾࡢኳ↛࡟Ꮡᅾࡍࡿ㕲ࡼࡾ㔜࠸ඖ⣲ࡢ࡯࡜ࢇ࡝ࡣ୰ᛶᏊᤕ⋓࡟ࡼࡾసࡽࢀࡿࡀࠊ୰ᛶᏊᤕ⋓࡛ࡣసࡽࢀ࡞࠸㝧Ꮚ㐣๫᰾㸦p ᰾㸧ࡶప࠸ྠ఩య⤌ᡂ࡛Ꮡᅾࡋ࡚࠸ࡿࠋࡇࡢ p ᰾࡟ࡘ࠸࡚ࠊ⌧ᅾ࡛ࡣࢽ࣮ࣗࢺࣜࣀࡶࡋࡃࡣⲴ㟁⢏Ꮚ࡜ࡢ᰾཯ᛂࡀ୺࡜ࡋࡓᡂᅉ࡜ࡉࢀ࡚࠸ࡿࠋᡃࠎࡢࢢ࣮ࣝࣉ࡛
ࡣࣉࣟࢺࣥᤕ⋓࡟╔┠ࡋࠊ㉁㔞ᩘ 130!150 ࡢ p ᰾Ꮡᅾ㔞ࢆㄝ᫂ྍ⬟࡞ࣉࣟࢭࢫࡢᵓ⠏ࢆ┠ᣦࡋ࡚࠸ࡿࠋ≉࡟ኳయෆ࡛ࡢ᰾཯ᛂࡣບ㉳≧ែࡢ᰾ࡢᤕ⋓཯ᛂࢆ⪃៖ࡋ࡞ࡅࢀࡤ࡞ࡽ࡞࠸ࠋᮏ◊✲࡛ࡣไືᨺᑕ⥺ࢆ⏝࠸ࡓ 147Sm(γ,p)146Pm ཯ᛂ࡟╔┠ࡋࠊ༢ⰍගᏊ࡟ࡼࡿບ㉳㛵ᩘࢆ᫂ࡽ࠿࡟ࡍࡿ࡜࡜
ࡶ࡟ࠊ(γ,p)཯ᛂ࠿ࡽບ㉳᰾࡬ࡢ(p, γ)᩿㠃✚ࢆ᥎ᐃࡋࡓࠋ 㟁Ꮚࣛ࢖ࢼࢵࢡࢆ⏝࠸࡚ຍ㏿ࡉࢀࡓ 10!50 MeV ࡢ༢Ⰽ㟁Ꮚࣅ࣮࣒ࢆⓑ㔠ࢥࣥࣂ࣮ࢱ࡟ධᑕࡋࠊ
ᚓࡽࢀࡓไືᨺᑕ⥺ࢆ Sm ࢱ࣮ࢤࢵࢺ࡟↷ᑕࡋࡓࠋไືᨺᑕ⥺ࢫ࣌ࢡࢺࣝࡣ Geant4 ࢥ࣮ࢻࢆ⏝࠸࡚ぢ✚ࡶࡗࡓࠋ⏕ᡂࡋࡓ 146Pm ᨺᑕ⬟ࡣ HPGe ࢆ⏝࠸࡚ᐃ㔞ࡋࠊ᰾཯ᛂ᩿㠃✚ࢆ⟬ฟࡋࡓࠋ ᕧ኱ඹ㬆࡟ࡼࡿ྾཰㸦Breit-Wigner ศᕸ㸧࡟࢚ࢿࣝࢠ࣮౫Ꮡࡢᐃᩘࢆ஌ࡌࡓ㛵ᩘ࡛༢ⰍගᏊ࡟ࡼ
ࡿ(",p)ບ㉳㛵ᩘࢆぢ✚ࡶࡗࡓࠋࡇࡢ᩿㠃✚ࢆ⏝࠸࡚ࠊᘧ(1)࡟♧ࡍᚤ⣽㔮ྜ࠸ࡢἲ๎ࢆ⏝࠸࡚ࠊ㏫㐣⛬ࡢ᩿㠃✚ࢆぢ✚ࡶࡗࡓࠋఙభరలౌౣ‫כ‬ሺ౦ǡಋሻఙభరళ౏ౣሺಋǡ౦ሻൌ ሺଶ௝ଶሺଶ௝భరళ౏ౣ ାଵሻாಋమభరలౌౣ‫ כ‬ାଵሻ൫ଶ௝౦ ାଵ൯ ଶఓ௖మா౦ሺͳሻ

ࡇࡇ࡛ࠊȪ147Sm(γ,p) ࡜Ȫ146Pm*(p,γ)ࡣ 147Sm(γ,p)146Pm
᩿㠃✚࡜ࡑࡢ㏫㐣⛬ࡢ᩿㠃✚ࠊj147Smࠊj146Pm*ࠊjpࡣྛ᰾✀ࡢࢫࣆࣥࠊ#ࡣ᥮⟬㉁㔞ࠊc ࡣග㏿ࠊE"࡜ Ep ࡣගᏊ࡜ࣉࣟࢺࣥࡢ࢚ࢿࣝࢠ࣮ࢆ♧ࡍࠋࡲࡓ(γ,p)཯ᛂ࡟࠾ࡅࡿ 146Pm ࡢບ㉳࢚ࢿࣝࢠ࣮ࡣࠊ
ධᑕගᏊࡢ࢚ࢿࣝࢠ࣮ࠊQ ್ࠊTALYS ࢥ࣮ࢻࡼࡾᚓࡽࢀࡓᨺฟࡉࢀࡿࣉࣟࢺࣥࡢ࢚ࢿࣝࢠ࣮ࢫ
࣌ࢡࢺࣝࡼࡾぢ✚ࡶࡗࡓࠋᅗ 1(a)࡟࢚ࢿࣝࢠ࣮཰
ᨭࡼࡾᚓࡽࢀࡓධᑕࣉࣟࢺ࢚ࣥࢿࣝࢠ࣮࡜ 146Pm
ບ㉳≧ែࡢ㛵ಀࠊᅗ 2(b)࡟ບ㉳ࡉࢀࡓ 146Pm ࡢ(p,γ)཯ᛂ᩿㠃✚ࢆ♧ࡍࠋ౛࠼ࡤ 6 MeV ⛬ᗘࡢࣉࣟࢺ࢚ࣥࢿࣝࢠ࣮ࢆᑐ㇟࡟ࡋࡓሙྜࡣࠊ2 MeV ⛬ᗘࡢບ㉳≧ែࡢ 146Pm ࡀᨭ㓄ⓗ࡛࠶ࡿࠋ⌮ㄽィ⟬࡟ᅗ 1 ࢚ࢿࣝࢠ࣮཰ᨭࡼࡾᚓࡽࢀࡿධᑕࣉࣟࢺ
࢚ࣥࢿࣝࢠ࣮࡜ 146Pm ࡢບ㉳≧ែࡢ㛵ಀ(a)ࠊ
146
Pm ບ㉳᰾ࡢ(p,")཯ᛂ᩿㠃✚(b)ࡼ ࡿ ᇶ ᗏ ≧ ែ ࡸ 150 keV ࡢ ບ ㉳ ≧ ែ ࡢ ᰾ ࡢ
146

Pm(p,γ)཯ᛂ࡜኱ࡁ࡞ᕪࡣぢࡽࢀ࡞࠸ࠋኳయෆ࡛ࡢ᰾཯ᛂࡣᇶᗏ≧ែࡢ᰾཯ᛂ᩿㠃✚࡟ Stellar

Enhancement Factor (SEF)ࢆ஌ࡌ࡚ບ㉳᰾ࡢ᩿㠃✚ࡀ฼⏝ࡉࢀࡿࠋ(p,γ)཯ᛂ࡟࠾࠸࡚ඖ⣲ྜᡂ ᗘ
ୗ࡛ࡣ SEF ࡟ࡼࡿບ㉳᰾ࡢ᩿㠃✚ࡢ኱ࡁ࡞⿵ṇࡣᚲせ࡞࠸࡜⪃࠼ࡽࢀࡿࠋ

Investigation of p-process around mass number 140 (I) -147Sm(γ,p) reaction and its reverse processKINOSHITA, N., SEKIMOTO, S., OHTSUKI, T., MASUMOTO, K., HAMAJIMA, Y.,
YOKOYAMA, A.

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1A06㉁㔞ᩘ ௜㏆࡟࠾ࡅࡿ Sࣉࣟࢭࢫゎ᫂࡟ྥࡅࡓ⣲㐣⛬ࡢ◊✲ղ̿㝧Ꮚ㐣๫᰾ࡢ SȚ ཯ᛂ̿㸦㔠ἑ኱㝔⮬↛ 1ࠊΎỈᘓタ 2ࠊ㜰኱㝔⌮ 3ࠊ㔠ἑ኱⌮ᕤ 4㸧‫ۑ‬ᯘ࿴᠇ 1ࠊୖ㔝ៅ࿃ 1ࠊᮌୗဴ୍ 2ࠊ㧗ᶫᡂே 3ࠊᶓᒣ᫂ᙪ 4䛆⥴ゝ䛇㻌 ⌧ᅾኴ㝧⣔࡟Ꮡᅾࡍࡿඖ⣲ࡢෆࠊ㕲ࡼࡾ㔜࠸ඖ⣲ࡢ኱༙ࡣ㐜࠸୰ᛶᏊᤕ⋓཯ᛂ(s ࣉࣟࢭࢫ)ࡸ㏿࠸୰ᛶᏊᤕ⋓཯ᛂ(r ࣉࣟࢭࢫ)࡟ࡼࡗ࡚ඖ⣲ྜᡂࡉࢀࡿࠋࡋ࠿ࡋ୍㒊࡟ࡣ୰ᛶᏊᤕ⋓ࣉࣟࢭࢫ࡛ࡣ⏕ᡂࡉࢀ࡞࠸୰ᛶᏊḞஈ᰾✀(p ᰾)ࡀᏑᅾࡍࡿࠋp ᰾ࡢྜᡂ⤒㊰࡟ࡣ(", n)ࡢࡼ࠺
࡞⇕ศゎࡸࠊ(p, ")ࡢࡼ࠺࡞ࣉࣟࢺࣥᤕ⋓཯ᛂࠊࡉࡽ࡟ࡣ(#e, e!)࡞࡝ࡢࢽ࣮ࣗࢺࣜࣀ࡜ࡢ᰾཯
ᛂࡀ⪃࠼ࡽࢀࠊࡑࢀࡽࢆ⏝࠸ࡓ⌮ㄽⓗࣔࢹࣝィ⟬ࡀᏑᅾࡍࡿࡀ࠸ࡎࢀࡢࣔࢹ࡛ࣝࡶ⌧ᅾࡢྠ఩యẚࡢᐃ㔞ⓗ࡞ゎ᫂࡟ࡣ⮳ࡗ࡚࠸࡞࠸ࠋࡑࡢཎᅉ࡜ࡋ࡚ࡣࠊィ⟬ࣔࢹࣝᵓ⠏࡟୙ྍḞ࡞ p᰾ྜᡂ࡟㛵ࢃࡿ཯ᛂ᩿㠃✚࡞࡝ࡢ᰾ࢹ࣮ࢱࡀ୙㊊ࡋ࡚࠸ࡿࡇ࡜ࡀᣲࡆࡽࢀࡿࠋᮏ◊✲࡛ࡣ㉁㔞ᩘ 140 ௜㏆ࡢ s ᰾࡬ࡢ㝧Ꮚᤕ⋓཯ᛂ࡟㛵ࡋ࡚ࠊp ᰾࡛࠶ࡿ 136Ceࠊ138Ceࠊ144Sm ࡢඖ⣲ྜᡂ࡟╔┠ࡋࠊ⌮ㄽィ⟬ࢆ⾜࠺ࡓࡵ࡟ࡇࢀࡽ 3 ᰾✀࡬ࡢ(p, ")࠾ࡼࡧ(p, n)཯ᛂ࡟ࡘ࠸࡚ࡢ᰾཯ᛂ᩿㠃✚ ᐃࢆ⾜ࡗࡓࠋࡲࡓ 144Sm ࡢᏑᅾ㔞ࢆㄝ᫂ࡍࡿࡇ࡜ࢆ┠ⓗ࡟ࠊ ᗘࠊᐦᗘࠊඖ⣲ྜᡂ᫬㛫ࢆࣃ࣓࣮ࣛࢱ࡟ࠊs ᰾࡛࠶ࡿ 142Nd ࠿ࡽࡢ㝧Ꮚᤕ⋓཯ᛂ࡟ࡼࡗ࡚ 144Sm ࡀྜᡂࡉࢀࡿ࡜࠸࠺ࢩ
ࢼࣜ࢜࡟ࡘ࠸᳨࡚ウࡋࡓࠋ䛆ᐇ㦂䛇㻌 ኱㜰኱Ꮫ᰾≀⌮◊✲ࢭࣥࢱ࣮࡟࡚ࠊࢫࢱࢵࢡἲ࡟ࡼࡿࣅ࣮࣒↷ᑕᐇ㦂ࢆ⾜ࡗࡓࠋ㓟໬ࢧ࣐࣒ࣜ࢘ࡢ 144Sm ⃰⦰ྠ఩య㸦⃰⦰ᗘ 94.4%㸧ࢆ㧗⣧ᗘ࢔࣑ࣝࢽ࣒࢘⟩㸦⣧ᗘ 99.999%㸧࡟㟁╔ࡍࡿࡇ࡜࡛ㄪ〇ࡉࢀࡓ 144Sm 㟁╔ࢱ࣮ࢤࢵࢺ㸦ཌࡉ 0.21!0.26 mg/cm2㸧ࢆࠊධᑕ࢚ࢿࣝࢠ
࣮ࢆㄪᩚࡍࡿࢹ࢕ࢢ࣮ࣞࢲ࣮ࡢᚋ࡟ 6 ᯛ㔜ࡡྜࢃࡏ 1 ࡘࡢࢫࢱࢵࢡ࡜ࡋࡓࡶࡢࢆ 14 MeV ࡢࣉࣟࢺࣥࣅ࣮࣒࡛ 3 ᫬㛫↷ᑕࡋࡓࠋࡲࡓࠊࣉࣛࢬ࣐ࢫࣃࢵࢱࣜࣥࢢἲ࡟ࡼࡾㄪ〇ࡉࢀࡓ 136Ce㸦⃰⦰ᗘ 21.5%㸧
ࠊ138Ce㸦⃰⦰ᗘ 12.9%㸧ࢱ࣮ࢤࢵࢺࢆࢹ࢕ࢢ࣮ࣞࢲ࣮ࡢᚋ࡟ 5 ᯛ㔜ࡡྜࢃࡏࡑࢀࡒࢀࢆࢫࢱࢵࢡ࡜ࡋࠊྠࡌࣉࣟࢺࣥࣅ࣮࣒ࢆ㸯᫬㛫↷ᑕࡋࡓࠋ↷ᑕᚋࠊศゎࡋࡓࢱ࣮ࢤ
ࢵࢺྛࠎ࡟ࡘ࠸࡚ Ge ༙ᑟయ᳨ฟჾࢆ⏝࠸࡚ᨺᑕᛶ཯ᛂ⏕ᡂ≀ࡢ"⥺ ᐃࢆ⾜ࡗࡓࠋ ᐃ࡟ࡼࡗ࡚ᚓࡽࢀࡓ཯ᛂ⏕ᡂ≀ࡢᨺᑕ⬟࠿ࡽ㝧Ꮚᤕ⋓㐣⛬ࡢ཯ᛂ᩿㠃✚ࢆồࡵࡓࠋ䛆⤖ᯝ䞉⪃ᐹ䛇㻌 ᐇ㦂࡟ࡼࡾࠊ㝧Ꮚᤕ⋓཯ᛂ᩿㠃✚ࡢ ᐃࢹ࣮ࢱࡀ 3!8 MeV ࡢ࢚ࢿࣝࢠ࣮㡿ᇦ࡛ᚓࡽࢀࡓࠋྲྀᚓࡋࡓບ㉳㛵ᩘࢆィ⟬ࢥ࣮ࢻ NON-SMOKER[http://nucastro.org/nonsmoker.html]
࡟ࡼࡿ⌮ㄽィ⟬್࡜࡜ࡶ࡟ᅗ 1!3 ࡟♧ࡋࡓࠋㅮ₇࡛ࡣࠊ144Sm(p, ")࡟╔┠ࡋࠊ144Sm ࡢᏑᅾ㔞ࡢ᫬㛫ኚ໬࡟ࡘ࠸࡚ࡢ⌮ㄽィ⟬⤖ᯝࠊཬࡧ᰾཯ᛂ᩿㠃✚ࡢ ᐃ್࡜⌮ㄽ್ࡢᕪࡀཬࡰࡍྠ఩
య⤌ᡂ࡬ࡢᙳ㡪ࡶྜࢃࡏ࡚ሗ࿌ࡍࡿࠋ

ᅗ 1 Sm-144 + p ཯ᛂບ㉳㛵ᩘ

ᅗ 2 Ce-136 + p ཯ᛂບ㉳㛵ᩘ
ᅗ 3 Ce-138 + p ཯ᛂບ㉳㛵ᩘInvestigation of p-process around mass number 140 (II) !(p,γ) cross section measurements on protonrich nuclei!
HAYASHI, K., UENO, S., KINOSHITA, N., TAKAHASHI, N., YOKOYAMA, A.

- 34 -

1A07㉁㔞ᩘ  ௜㏆࡟࠾ࡅࡿ S ࣉࣟࢭࢫゎ᫂࡟ྥࡅࡓ⣲㐣⛬ࡢ◊✲ճ ̿ࣉࣟࢺࣥᤕ⋓࡟ࡼࡿྠ఩యẚࡢࣔࢹࣝィ⟬̿㔠ἑ኱㝔⮬↛ ࠊΎỈᘓタ ࠊ㔠ἑ኱⌮ᕤ  ‫ୖۑ‬㔝ៅ࿃ ࠊᮌୗဴ୍ ࠊᯘ࿴᠇ ࠊᶓᒣ᫂ᙪ ࠙ㅖゝࠚኴ㝧⣔࡟ࡣᏳᐃ࡞㝧Ꮚ㐣๫᰾㸦S ᰾㸧ࡀ 35 ✀㢮Ꮡᅾࡍࡿࠋࡇࢀࡽࡢ⏕ᡂ㐣⛬㸦p ࣉࣟࢭࢫ㸧࡟ࡘ࠸࡚ࠊ⇕ศゎ࣭ࢽ࣮ࣗࢺࣜࣀ࡜ࡢ᰾཯ᛂ࣭㝧Ꮚ࡜ࡢᤕ⋓཯ᛂࡀ⪃࠼ࡽࢀࡿࠋࡲ
ࡓ཯ᛂࡀ▷᫬㛫࡛⤊ࢃࡿࡢ࠿㛗ᮇ㛫࠿࠿ࡗࡓࡢ࠿࡟ࡘ࠸࡚ࡶ᳨ウࡣࡉࢀ࡚࠸ࡿࡀࠊ࠸ࡎࢀࡢ
ሙྜࡶྠ఩య⤌ᡂࡢᐃ㔞ⓗ࡞ㄝ᫂࡟ᡂຌࡋ࡚࠸࡞࠸ࠋᡃࠎࡢࢢ࣮ࣝࣉ࡛ࡣ㉁㔞ᩘ 140 ௜㏆ࡢ᰾✀࡬ࡢࣉࣟࢺࣥᤕ⋓཯ᛂ࡟╔┠ࡋࠊ᰾ࢹ࣮ࢱࡢ෌᳨ウࡢࡓࡵࡢ ᐃ࠾ࡼࡧ᰾ࢹ࣮ࢱࢆ⏝࠸ࡓࣔࢹࣝィ⟬ࢆ⾜࠸ p ᰾ࡢྠ఩య⤌ᡂࢆㄝ᫂ࢆヨࡳ࡚࠸ࡿࠋ㉁㔞ᩘ 130̾150 ࡟ࡣኳ↛࡟Ꮡᅾࡍࡿ p ᰾ࡀ 136Ceࠊ138Ceࠊ138Laࠊ144Sm ࡢ 4 ✀㢮ࡀ࠶ࡾࠊᮏ◊✲࡛ࡣࠊ ᗘࠊᐦᗘࠊ཯ᛂ᫬㛫ࢆࣃ࣓࣮ࣛࢱ࡟ࠊs ᰾࡬ࡢࣉࣟࢺࣥࡢᤕ⋓࡟ࡼࡿࢩࢼ࡛ࣜ࢜ୖグࡢ p ᰾ࡢᏑᅾ㔞ࢆㄝ᫂ྍ⬟࡞ࣔࢹࣝࢆᵓ⠏ࡋࡓࠋࡲࡓ 144Sm ࡬ࡢࣉࣟࢺࣥᤕ⋓཯ᛂࡢᐇ㦂್࡜⌮ㄽ್ࡢẚ㍑࠿ࡽィ⟬ࡢ⿵ṇࢆ⾜ࡗࡓࠋ
࠙ࣔࢹࣝィ⟬ࠚࡣࡌࡵ࡟ࠊr 㐣⛬ࡢᙳ㡪ࡢ࡞࠸⣧⢋࡞ s 㐣⛬࡟ࡼࡿ BaࠊNdࠊSm ྠ఩య⤌ᡂࢆぢ✚ࡿࡓࡵ࡟ࠊ133Cs ࢆฟⓎ≀㉁࡟୰ᛶᏊᐦᗘ 4×108 n/cm3ࠊ4×108 K ࡢ ᗘୗ࡛ࡢࡇࢀࡽࡢ 3ඖ⣲ࡢྠ఩య⤌ᡂࢆぢ✚ࡶࡗࡓࠋḟ࡟ࡇࡢ s 㐣⛬࡛⏕ᡂࡋࡓྠ఩యࢆࢱ࣮ࢤࢵࢺ࡟ࠊ୰ᛶᏊ
ᐦᗘ 4×108 n/cm3ࠊࣉࣟࢺࣥᐦᗘ㸦Np㸧103̾106 g/cm3ࠊ ᗘ㸦0.5̾2.0㸧×109 K ࡟࠾ࡅࡿ s ᰾࡟ᑐࡍࡿ p ᰾ࡢᏑᅾ㔞ࡢ᫬㛫ኚ໬ࢆㄪ࡭ࡓࠋࡲࡓࠊ144Sm ࡬ࡢࣉࣟࢺࣥᤕ⋓཯ᛂࡢᐇ㦂್ࡼࡾࠊࣉࣟࢺࣥᤕ⋓཯ᛂ᩿㠃✚ࢆ 10 ಸ࡟⿵ṇࡋィ⟬ࢆ⾜ࡗࡓࠋ୰ᛶᏊᤕ⋓࡜ࣉࣟࢺࣥᤕ⋓ࡢ᰾཯ᛂ᩿㠃✚࡟ࡣ NON-SMOKER ࢥ࣮ࢻࢆ⏝࠸ࠊ୰ᛶᏊ࡜ࣉࣟࢺࣥ࡜ࡢ᰾཯ᛂ࠾ࡼࡧ⏕ᡂ᰾ࡢᨺᑕ
ቯኚࢆ⪃៖ࡋࡓࠋ
࠙⤖ᯝ࡜⪃ᐹࠚs ᰾࡟ᑐࡍࡿ p ᰾ࡢཎᏊᩘẚࠊࡍ࡞ࢃࡕ
136
Ce/134Baࠊ138Ce/134Baࠊ138La/134Ba ࡣ㸦7̾8㸧×108 K ࡀ⣙ 1 ᖺ௨ୖᣢ⥆ࡍࢀࡤࠊ⌧ᅾࡢྠ఩యẚࡢㄝ᫂ࡀྍ⬟࡛࠶ࡿࡀࠊ136Ce/138Ceࡣࡇࡢ ᗘ᮲௳࡛ࡣ⌧ᅾࡢྠ఩యẚࡢ 1/4 ௨ୗ࡜࡞ࡾࠊ㛗᫬㛫࡛ࡢඖ⣲ྜᡂࡢࢩࢼ࡛ࣜ࢜ࡣㄝ᫂ࡀࡘ࠿࡞࠸ࠋḟ࡟ࠊ▷᫬㛫࡛ࡢඖ⣲ྜᡂࡢࢩࢼࣜ࢜ࢆ᳨ウࡍࡿࡓࡵࠊᅗ 1 ࡟ࣉࣟࢺࣥᐦᗘ 1000
g/cm3 ࡟࠾ࡅࡿ 136Ce/134Ba ẚ࠾ࡼࡧ 136Ce/138Ce ẚࡢඖ⣲ྜᡂ᫬㛫࡜ࡢ㛵ಀࢆ♧ࡍࠋ1000 g/cm3 ࡢࣉࣟࢺࣥᐦᗘୗ࡛ࡣࠊ⣙ 1.5×109 K
ࡢ ᗘࡀ 1̾10 ⛊ᣢ⥆ࡍࢀࡤࠊୖグࡢྠ఩యẚࡢࡍ࡭࡚ࡀ⌧ᅾࡢྠ఩యẚ࡜࡞ࡿ࡜ㄝ࡛᫂ࡁࡿࠋࡲࡓࣉࣟࢺࣥᤕ⋓཯ᛂ᩿㠃✚ࢆ 10ಸ࡟⿵ṇࡋィ⟬ࢆ⾜ࡗࡓ⤖ᯝࠊ1000 g/cm3 ࡢࣉࣟࢺࣥᐦᗘୗ࡛ࡣࠊ
⣙ 1.25×109 K ࡢ ᗘࡀ 1̾10 ⛊ᣢ⥆ࡍࢀࡤࠊୖグࡢྠ఩యẚࡢࡍ࡭࡚ࡀ⌧ᅾࡢྠ఩యẚ࡜࡞ࡿ࡜ㄝ࡛᫂ࡁࡓࠋ㉁㔞ᩘ 130̾150 ࡟࠾
136134ࡅࡿ⌧ᅾࡢኴ㝧⣔ෆࡢ p ᰾ࡢᏑᅾ㔞ࡣࠊࣉࣟࢺࣥᤕ⋓࡟ࡼࡾㄝ᫂ ᅗ 1. Ce/ Ba ẚ㸦ୖ㸧࠾ ࡼ ࡧ 136Ce/138Ce ẚྍ⬟࡛࠶ࡿࡇ࡜ࡀ♧၀ࡉࢀࡓࠋ

㸦ୗ㸧㸦Np=1000 g/cm3,
T9=1.5 K㸧
Investigation of p-process around mass number 140 (Ϫ) ̾model calculation of isotopic abundance
based on proton capture reaction̾
UENO, S., KINOSHITA, N., HAYASHI, K., YOKOYAMA, A.

- 35 -

1A08

 ␒ඖ⣲ 5I ࡢỈ㓟໬ࢧ࣐࣒ࣜ࢘ඹỿᣲື
㜰኱㝔⌮ ࠊ⌮◊ோ⛉ࢭ ࠊ᪂₲኱㝔⌮ ࠊᮾ໭኱㟁Ꮚගࢭ ࠊ㜰኱ 5, ࢭ ࠊி
኱⅔  ‫➟ۑ‬ᯇⰋᓫ ࠊ㇏ᮧᜨᝅ ࠊᶓ໭༟ஓ ࠊ㔜Ἑඃ኱ ࠊ㧗ᶫᡂே ࠊ⩚ሙᏹග ࠊᑠ᳃᭷ᕼᏊ ࠊ㔠㇂῟ᖹ ࠊ㯤᫂㍤ ࠊ᳃⏣ᾈ௓ ࠊᮧୖᫀྐ ࠊ⳥Ọⱥᑑࠊ୕㢌⫄᫂ ࠊྜྷᮧᓫ ࠊ኱ᵳ໅ ࠊ㧗ᐑᖾ୍ ࠊ⠛ཎཌ 䛆⥴ゝ䛇㻌 ࢔ࢡࢳࣀ࢖ࢻඖ⣲ࡼࡾࡶཎᏊ␒ྕࡀ኱ࡁ࡞㉸㔜ඖ⣲ࡣࠊ༙ῶᮇࡀᩘ༑⛊௨ୗ࡜▷ࡃࠊຍ㏿ჾࢆ⏝࠸ࡓ᰾཯ᛂ࡛ప⏕ᡂ⋡࡛ࡋ࠿⏕ᡂ࡛ࡁ࡞࠸ࠋࡑࡢࡓࡵࠊ୍ཎᏊࢆᑐ㇟࡜ࡋࡓ㎿㏿
࡞ᐇ㦂ࢆከᩘᅇ⧞ࡾ㏉ࡍᚲせࡀ࠶ࡾࠊ໬Ꮫᐇ㦂࡟ࡣ኱ࡁ࡞ᅔ㞴ࡀక࠺ࠋࡲࡓࠊ୍ཎᏊࡢྠᐃ
࡟ࡣࠊȘ⥺ ᐃࡀᚲせ࡛࠶ࡾࠊࡑࡢ㎿㏿࡞ヨᩱㄪ〇ࡶ኱ࡁ࡞ㄢ㢟࡜࡞ࡿࠋࡑࢀࡺ࠼ࠊࡇࢀࡲ
࡛࡟⾜ࢃࢀ࡚ࡁࡓ໬Ꮫᐇ㦂⣔ࡣ㠀ᖖ࡟㝈ࡽࢀ࡚ࡁࡓࠋ㉸㔜ඖ⣲ࡢ໬Ꮫⓗᛶ㉁ࢆࡼࡾヲ⣽࡟ㄪ࡭ࡿࡓࡵ࡟ࡣࠊࡼࡾᵝࠎ࡞ᐇ㦂ᡭἲ࠾ࡼࡧ໬Ꮫ཯ᛂ⣔࡟࠾࠸࡚ᐇ㦂ࢆ⾜࠺ࡇ࡜ࡀᚲせ࡛࠶ࡿࠋᮏ◊✲࡛ࡣỈ㓟໬ࢧ࣐࣒ࣜ࢘࡜ࡢඹỿᣲືࢆ฼⏝ࡋࡓ㧗ศゎ⬟Ș⥺ ᐃヨᩱࡢసᡂ᪉ἲࢆ
㉸㔜ඖ⣲ࡢ᪂つ໬Ꮫᐇ㦂ᡭἲ࡜ࡋ࡚ᛂ⏝ࡍࡿࡇ࡜ࢆ┠ᣦࡋࠊࡇࢀࡲ࡛ᇶ♏ᐇ㦂࡜㎿㏿࡞ᐇ㦂ࡢࡓࡵࡢ༙⮬ືỿẊసᡂ⿦⨨ࡢ㛤Ⓨࢆ⾜ࡗ࡚ࡁࡓࠋࡲࡓࠊ104 ␒ඖ⣲ Rf ࢆ◊✲ᑐ㇟࡜ᐃࡵࠊ
ྠࡌ 4 ᪘ඖ⣲࡛࠶ࡿ Zr, Hf ࠾ࡼࡧᨃ 4 ᪘ඖ⣲ࡢ Th ࡟ࡘ࠸࡚ࡢᇶ♏◊✲ࢆ⾜࠸ࠊ࢔ࣥࣔࢽ࢔ỈࡸỈ㓟໬ࢼࢺ࣒ࣜ࢘Ỉ⁐ᾮࡢሷᇶᛶ⁐ᾮ୰࡛ࡢỿẊ཰⋡࡟࠾࠸࡚ࠊࡇࢀࡽඖ⣲㛫࡛᫂☜࡞ᕪ␗ࢆほ ࡋࡓࠋ௒ᅇࡣࠊຍ㏿ჾ࢜ࣥࣛ࢖ࣥࡢඹỿᐇ㦂ࢆ Zr, Hf ࠾ࡼࡧ Rf ࡟ᑐࡋ࡚ᐇ᪋ࡋࡓࠋ
䛆ᐇ㦂䛸⤖ᯝ䛇 ௒ᅇࠊ⌮໬Ꮫ◊✲ᡤࡢ AVF ࢧ࢖ࢡࣟࢺࣟࣥࢆ⏝࠸࡚ 85Zr, 169Hf ࡜ 261Rf ࢆྜᡂࡋࠊ
ሷᇶᛶ⁐ᾮ୰࡛ࡢࢧ࣐࣒ࣜ࢘࡜ࡢඹỿᣲືࢆㄪ࡭ࡓ㸦Fig. 1㸧ࠋ➨୍࡟ࠊZr ࡜ Hf ࡢຍ㏿ჾ࢜ࣥࣛ࢖ࣥඹỿᐇ㦂ࢆ⾜ࡗࡓࠋ85Zr ࠾ࡼࡧ 169Hf ࢆ natGe/natGd(18O, xn)཯ᛂ࡛ྜᡂࡋ࡞ࡀࡽࠊ⥅⥆ⓗ࡟࢞ࢫࢪ࢙ࢵࢺẼὶ࡟ࡼࡗ࡚໬Ꮫᐇ㦂ᐊ࡟㏦ࡾࠊ⮬ື⁐ᾮ໬⿦⨨࡟ᤕ㞟ࡋࡓࠋ㸯ศ㛫ᤕ㞟ࡋ
ࡓ 85Zr ࡜ 169Hf ࡣ⮬ື⁐ᾮ໬⿦⨨࡟ࡼࡗ࡚ࢧ࣐࣒ࣜ࢘ࢆྵࢇࡔ◪㓟⁐ᾮ࡟⁐ゎࡉࢀࡓࠋࡇࡢヨᩱ࡟ሷᇶᛶ⁐ᾮࢆຍ࠼࡚ 10 ⛊㛫ᨩᢾࡋࡓᚋ࡟ࠊ༙⮬ືỿẊసᡂ⿦⨨ࢆ⏝࠸࡚ඹỿヨᩱࢆసᡂࡋࡓࠋヨᩱࡣȚ⥺ ᐃࢆ⾜࠸ࠊࡇࡢᨺᑕ⬟࡜ᶆ‽ヨᩱࡢᨺᑕ⬟࠿ࡽỿẊ཰⋡ࢆ⟬ฟࡋࡓࠋỿ
Ẋヨᩱࡣ⣙ 2 ศ㛫࡛㎿㏿࡟సᡂࡍࡿࡇ࡜ࡀ࡛ࡁࠊᚓࡽࢀࡓỿẊ཰⋡ࡣᇶ♏ᐇ㦂࡟࠾ࡅࡿỿẊ཰⋡࡜୍⮴ࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࡓࡵࠊRf ඹỿᐇ㦂ࡢ᮲௳ࢆỴᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋ
ḟ࡟ 248Cm(18O, 5n)཯ᛂ࡟ࡼࡾ 261Rf ࢆྜᡂࡋࠊྠᵝࡢᡭἲ࡛ࢧ࣐࣒ࣜ࢘࡜ࡢඹ
ỿᣲືࢆㄪ࡭ࡓࠋỿẊ๣࡟ࡣࠊ0.37, 15 M࢔ࣥࣔࢽ࢔Ỉ࡜ 1, 6 M Ỉ㓟໬ࢼࢺࣜ࢘
࣒Ỉ⁐ᾮࢆ⏝࠸ࡓࠋ261Rf ࡢྠᐃ࡟ࡣ⌮໬Ꮫ◊✲ᡤࡢ⮬ື㐃⥆Ș⥺ ᐃ⿦⨨ࢆ⏝࠸ࡓࠋᐇ㦂ࡣ༑ศ࡞⤫ィ㔞ࡀᚓࡽࢀࡿ
ࡼ࠺࡟ 1 ᮲௳࡟௜ࡁ஧ⓒᅇ⛬ᗘ௨ୖ⧞ࡾ㏉ࡋࠊほ ࡉࢀࡓ 261Rf ࡢȘ࢖࣋ࣥࢺ࠿ࡽỿẊ཰⋡ࢆ⟬ฟࡋࡓࠋRf ࡢඹỿᣲືࡣ Zr ࡸ Hf ࡜ࡣ᫂ࡽ࠿࡟␗࡞ࡾࠊᨃྠ
Fig. 1. Schematic of online coprecipitation experiment.
᪘ඖ⣲ࡢ Th ࡟㏆࠸ࡇ࡜ࡀศ࠿ࡗࡓࠋ
Coprecipitation behavior of element 104, Rf, with Sm hydroxide
KASAMATSU, Y., TOYOMURA, K., YOKOKITA, T., SHIGEKAWA, Y., TAKAHASHI, N., HABA,
H., KOMORI, Y., KANAYA, J., HUANG, M., MORITA, K., MURAKAMI, M., KIKUNAGA, H.,
MITSUGASHIRA, T., YOSHIMURA, T., OHTSUKI, T., TAKAMIYA, K., SHINOHARA, A.

- 36 -

1A09

 ␒ඖ⣲ 5I ᐇ㦂࡟ྥࡅࡓ㎿㏿⁐፹ᢳฟ⿦⨨ࡢ㛤Ⓨ(㜰኱㝔⌮ 1ࠊ⌮◊ோ⛉ࢭ 2ࠊ㜰኱ RI ࢭ 3)‫ۑ‬୰ᮧᏹᖹ 1ࠊᶓ໭༟ஓ 1ࠊ➟ᯇⰋᓫ 1ࠊᕤ⸨♸⏕ 2ࠊྜྷᮧᓫ 3ࠊ㧗ᶫᡂே 1ࠊ⠛ཎཌ 1䛆⥴ゝ䛇 104 ␒ඖ⣲ࣛࢨ࣮࣍ࢪ࣒࢘ (Rf) ࡣ㉸㔜ඖ⣲ࡢ୰࡛ࡣẚ㍑ⓗ◊✲౛ࡀከ࠸ࠋ⁐ᾮ໬Ꮫᐇ㦂࡛ࡣࡇࢀࡲ࡛ᅛᾮᢳฟࢆ୰ᚰ࡟⾜ࢃࢀ࡚࠾ࡾࠊ⁐፹ᢳฟ࡛ࡢᐇ㦂౛ࡣ࡯࡜ࢇ࡝࡞࠸ࠋ㉸㔜ඖ⣲ࡢ໬Ꮫ࡛ࡣᐇ㦂ࢆ▷᫬㛫࡛᏶஢ࡉࡏࡿᚲせࡀ࠶ࡾࠊ▷᫬㛫࡛ᢳฟ࡜┦ศ㞳ࢆ⾜࠺ᚲせࡀ࠶ࡿࡓࡵࠊ㉸㔜ඖ⣲ࡢ⁐፹ᢳฟᣲືࢆㄪ࡭ࡿࡢࡣ㠀ᖖ࡟ᅔ㞴࡛࠶ࡿࠋࡲࡓࠊศ㓄ẚࢆồࡵࡿࡓࡵ࡟ࡣ▷᫬㛫࡛ᢳฟᖹ⾮࡟฿㐩ࡍࡿᚲせࡀ࠶ࡿࠋᮏ◊✲ᐊ࡛ࡣࠊRf ࡢᑑ࿨(⣙㸯min)௨ෆ
࡛ࡢᖹ⾮฿㐩ࢆ┠ⓗ࡟ᢳฟ⿦⨨ Flow Injection Extractor (FIE) ࡢ㛤Ⓨࢆ⾜ࡗ࡚࠸ࡿࠋFIE ࡣࢸࣇࣟࣥࢳ࣮ࣗࣈ࡟⣽࠿ࡃ้ࢇࡔࢸࣇࣟࣥࣅ࣮ࢬࢆワࡵࡓࡶࡢ࡛࠶ࡾࠊỈ┦࡜᭷ᶵ┦ࢆྠ᫬࡟ὶࡋ㎸ࡴࡇ࡜࡛㸰┦ࢆ⣽࠿ࡃΰࡐྜࢃࡏࠊ2 ┦㛫ࡢᣑᩓ㏿ᗘࢆ㧗ࡵ࡚࠸ࡿࠋࡲࡓࠊᐇ㦂᫬㛫ࡢ▷⦰ࡢࡓࡵ࡟⭷ศ㞳ἲࢆ⏝࠸ࡓỈ┦࡜᭷ᶵ┦ࡢศ㞳⿦⨨ࡶ㛤Ⓨࡋࡓࡢ࡛ేࡏ࡚ሗ࿌ࡍࡿࠋ䛆 ᐇ 㦂 䛇 㻌 88Zr ࡜ 175Hf ࢆ ኱ 㜰 ኱Ꮫ ᰾ ≀⌮ ◊ ✲ࢭ ࣥ ࢱ ࣮࡟ ࡚ ࠊࡑ ࢀࡒࢀ 89Y(p,2n)88Zr ࡜natLu(p,xn)175Hf ཯ᛂ࡛〇㐀ࡋࠊ࢖࢜ࣥ஺᥮ἲ࡟ࡼࡾ⢭〇ࡋࡓࠋ⢭〇ࡋࡓ 88Zr ࡜ 175Hf ࢆሷ㓟࡟⁐ゎࡋࡓࡶࡢࢆỈ┦ࠊAliquat 336 ࢆ࣋ࣥࢮࣥࡲࡓࡣᅄሷ໬Ⅳ⣲࡟⁐ゎࡋࡓࡶࡢࢆ᭷ᶵ┦࡜ࡋࡓࠋỈ┦࡜᭷ᶵ┦ࢆ FIE ࡟ྠ᫬࡟ὶࡋ㎸ࡴࡇ࡜࡛ᢳฟࢆ⾜ࡗࡓࠋFIE ࢆ㏻㐣ࡋࡓΰྜᾮࢆ p.pࢳ࣮ࣗࣈ࡟ᤕ㞟ࡋࠊ㐲ᚰศ㞳࡟ࡼࡾ 2 ┦ࢆศ㞳ࡋࠊࡑࢀࡒࢀࢆ࣐࢖ࢡࣟࣆ࣌ࢵࢺ࡛ศྲྀࡋȚ⥺ᐃࡍࡿࡇ࡜࡛ศ㓄ẚࢆồࡵࡓࠋࡇࡢ⤖ᯝࢆࣂࢵࢳἲ࡟ࡼࡿᖹ⾮฿㐩ࡋࡓ⤖ᯝ࡜ẚ࡭ࡿࡇ࡜࡛ࠊFIE ࢆ⏝࠸࡚ᖹ⾮฿㐩ୗࡢศ㓄ẚࢆᚓࡿࡓࡵࡢ᮲௳ࢆㄪ࡭ࡓࠋ┦ศ㞳ᐇ㦂࡛ࡣࠊFIE ࢆ㏻ࡋࡓỈ┦࡜᭷ᶵ┦ࡢΰྜᾮࢆ┦ศ㞳⿦⨨࡟ࡼࡾศ㞳ࡋࡓࠋศ㞳ࡉࢀࡓỈ┦࡜᭷ᶵ┦ࡑࢀࡒࢀࡢᐦᗘ࠿ࡽ⣧ᗘࢆồࡵࡿࡇ࡜࡛┦ศ㞳⿦⨨ࡢᛶ⬟ࢆホ౯ࡋࡓࠋ࠙⤖ᯝࠚᐇ㦂᮲௳࡜ࡋ࡚ FIE ෆᚄࠊࣅ࣮ࢬ⢏ᚄࠊ
FIE 㛗ࡉࠊ᭷ᶵᒙ⁐፹࡟౫Ꮡࡋ࡚ศ㓄ẚࡀኚ໬ࡍࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋFig.1 ࡟ FIE ࡜ࣂࢵࢳἲ࡟
ࡼࡿ 88Zr ࡜ 175Hf ࡢᢳฟᐇ㦂࡟ࡼࡿሷ㓟⃰ᗘࡈ࡜ࡢศ㓄ẚࢆ♧ࡍࠋࡇࡢᐇ㦂᮲௳ࡣࠊFIE ࡢ㛗ࡉ 30cmࠊ
FIE ෆᚄ 1.0 mmࠊࢸࣇࣟࣥࣅ࣮ࢬ⢏ᚄ 250-500µmࠊỈ┦ࡣ 7.8-11.3 M ሷ㓟ࠊ᭷ᶵ┦ࡣ 0.01 M
Aliquat 336-ᅄሷ໬Ⅳ⣲⁐ᾮࠊྛ┦ὶ㏿ 500 µL/min࡛࠶ࡗࡓࠋFig.1 ࡛ࡣࣂࢵࢳἲ࡟ࡼࡿศ㓄ẚ࡜ FIE࡟ࡼࡿศ㓄ẚࡀ࡯ࡰ୍⮴ࡋ࡚࠸ࡿࠋࡇࡢࡇ࡜࠿ࡽ
FIE ࢆ⏝࠸ࡿࡇ࡜࡛ࠊᖹ⾮฿㐩᫬㛫ࢆ 1 min ௨ෆ࡟▷⦰࡛ࡁࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋ┦ศ㞳ᐇ㦂࡟㛵ࡋ࡚ࡣࠊ㸯ẁࡢ┦ศ㞳ჾࡢࡳ࡛ 95㸣௨ୖࡢ⣧ᗘ࡛Ỉ┦࡜᭷ᶵ┦ࢆศ㞳ࡍࡿࡇ࡜ࡀ࡛ࡁࡓࠋⓎ⾲࡛
Fig.1 Variation in distribution ratios of 88Zr and175Hf
ࡣࠊFIE ࡜┦ศ㞳ჾࢆ㐃⤖ࡉࡏ࡚⏝࠸ࡓሙྜࡢ
As afunction of hydrochloric acid concentration withᐇ㦂⤖ᯝࡶሗ࿌ࡍࡿࠋ
0.01 M Aliquat 336-carbon tetrachloride
Development of a rapid solvent extraction apparatus for rutherfordium
NAKAMURA, K.,YOKOKITA, T., KASAMATSU, Y., KUDOU, Y., YOSHIMURA, T.,
TAKAHASHI, N., SHINOHARA, A.

- 37 -

1A10

Aliquat 336 ࢆ⏝࠸ࡓ Nb, Ta ࡢࣇࢵ໬Ỉ⣲㓟⁐ᾮ࠿ࡽࡢ⁐፹ᢳฟᣲື
(᪂₲኱㝔⮬↛ 1ࠊ⌮◊࣭ோ⛉ࢭ 2ࠊᮾ໭኱࣭㟁Ꮚගࢭ 3ࠊ᪂₲኱⌮ 4)۵బ⸨኱㍜
1
ࠊᮧୖᫀྐ 1,2ࠊ⩚ሙᏹග 2ࠊ⳥Ọⱥᑑ 3ࠊ኱Ụ୍ᘯ 1ࠊᚋ⸨┿୍ 1ࠊᕤ⸨ஂ᫛ 4䛆⥴ゝ䛇ᙜ◊✲ᐊ࡛ࡣࠊ⁐ᾮ໬ᏛࡢほⅬ࠿ࡽ 105 ␒ඖ⣲ࢻࣈࢽ࣒࢘(Db)ࡢヲ⣽࡞໬Ꮫⓗᛶ㉁ࡢ
ゎ᫂ࢆ┠ⓗ࡜ࡋࡓ◊✲ࢆ㐍ࡵ࡚ࡁࡓࠋᮏ◊✲࡛ࡣࠊ5 ᪘ඖ⣲࡟ᑐࡋ࡚ᙉຊ࡞㘒ᙧᡂヨ⸆࡛࠶ࡿࣇࢵ໬≀࢖࢜ࣥࢆ⏝࠸ࠊ࢖࢜ࣥᑐᢳฟ๣࡛࠶ࡿᅄ⣭࢔ࣥࣔࢽ࣒࢘ሷ Aliquat 336 ࡟ࡼࡿᾮᾮ
ᢳฟᐇ㦂࡟ࡼࡾࠊDb ࡢࣇࢵ໬≀㘒ᙧᡂࢆㄪᰝࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡍࡿࠋ௒ᅇࡣࠊDb ࡢࡼࡾ㍍
࠸ྠ᪘ඖ⣲࡛࠶ࡿ 95gNb ࠾ࡼࡧ 179Ta ࢆ⏝࠸ࡓࣂࢵࢳᐇ㦂࡟ࡼࡾࠊࣇࢵ໬Ỉ⣲㓟࠿ࡽࡢ࢖࢜ࣥ
ᑐᢳฟᣲືࢆㄪᰝࡋࠊDb ࡢ໬Ꮫᐇ㦂࡟㐺ษ࡞ᐇ㦂᮲௳ࡢ᳨ウࢆ⾜ࡗࡓࠋ䛆ᐇ㦂䛇ᐇ㦂࡟⏝࠸ࡓ 95gNb(T1/2=35 d)࡜ 179Ta(T1/2=665 d)ࡣࠊ⌮◊࠾ࡼࡧᮾ໭኱ࡢ AVF ࢧ࢖ࢡࣟࢺࣟࣥࢆ⏝࠸࡚ࠊZr, Hf ࡢ㔠ᒓ⟩ᶆⓗ࡟㝧Ꮚࣅ࣮࣒ࢆ↷ᑕࡍࡿࡇ࡜࡛〇㐀ࡋࡓࠋ┠ⓗࡢ᰾✀ࡣᶆⓗ࠿ࡽ࢖࢜ࣥ஺᥮ศ㞳࡟ࡼࡾ⢭〇ࡋࠊࢺ࣮ࣞࢧ࣮࡜ࡋ࡚౑⏝ࡋࡓࠋ⢭〇ࡋࡓ 95gNb, 179Ta ࡣ
1 M ࣇࢵ໬Ỉ⣲㓟୰࡛ಖᏑࡋࠊᐇ㦂࡟⏝࠸ࡿ㝿࡟ࡣ୍᪦⵨Ⓨ஝ᅛࡋࡓᚋ࡟┠ⓗࡢ⃰ᗘࡢࣇࢵ໬Ỉ⣲㓟࡟⁐ゎࡋ࡚⏝࠸ࡓࠋỈ┦ 600 μL ࡜᭷ᶵ┦࡜ࡋ࡚ Aliquat 336 ࢆ 1,2-ࢪࢡ࢚ࣟࣟࢱࣥ࡟
⁐ゎࡋࡓ⁐ᾮ 600 μL ࢆࢳ࣮ࣗࣈ࡟ධࢀࠊ5 ศ㛫ࡢ᣺࡜࠺ཬࡧ㐲ᚰศ㞳ࢆ⾜ࡗࡓࠋࡑࡢᚋࠊ୧
┦ࢆ 350 μL ࡎࡘูࠎࡢࢳ࣮ࣗࣈ࡟ྲྀࡾศࡅࠊࢤ࣐ࣝࢽ࣒༙࢘ᑟయ᳨ฟჾࢆ⏝࠸࡚ X ⥺࠾ࡼࡧγ ⥺ࡢ ᐃࢆ⾜࠸ࠊศ㓄ẚ D ࢆ⟬ฟࡋࡓࠋࡇࡇ࡛ࠊศ㓄ẚ D ࡣ᭷ᶵ┦࡜Ỉ┦࡟ྵࡲࢀࡿᨺᑕ
⬟ẚ࡜ࡋ࡚ᐃ⩏ࡋࡓࠋ࠙⤖ᯝ࡜⪃ᐹࠚ⤖ᯝࡢ୍౛࡜ࡋ࡚ࠊ
0.01 M-27 M ࣇࢵ໬Ỉ⣲㓟⁐ᾮ࠿ࡽ10㸫4 M Aliquat 336/1,2-ࢪࢡ࢚ࣟࣟ
ࢱࣥ⁐ᾮ࡬ᢳฟࡋࡓ⤖ᯝࢆᅗ 1 ࡟♧ࡍࠋᶓ㍈ࡣࣇࢵ໬Ỉ⣲㓟⃰ᗘࠊ⦪㍈ࡣᢳฟ࡟࠾ࡅࡿศ㓄ẚ D ࢆ⾲ࡍࠋ95g
Nb ࡢ D ್ࡣࠊࣇࢵ໬Ỉ⣲㓟⃰ᗘࡀ኱ࡁࡃ࡞ࡿ࡟ࡘࢀ࡚ᚎࠎ࡟ῶᑡ
ࡋ࡚࠸ࡃഴྥࢆ♧ࡍ୍᪉࡛ࠊ179Ta ࡢ
D ್ࡣࣇࢵ໬Ỉ⣲㓟⃰ᗘࡀ 0.3 M ௜㏆࡛ᴟ኱ࢆ♧ࡋࡓࠋᅗ 1 ࡢ⤖ᯝ࠿ࡽࠊNb, Ta ࡣ␗࡞ࡗࡓࣇࢵ໬≀㘒యࢆᙧᡂࡋ࡚࠸ࡿࡇ࡜ࡀ♧၀ࡉࢀࡿࠋࡲࡓࠊ
ᅗ 1. 0.01 M-27 M ࣇࢵ໬Ỉ⣲㓟࠿ࡽࡢ 10㸫4 M Aliquatࣇࢵ໬Ỉ⣲㓟⃰ᗘࢆᅛᐃࡋࠊ 95gNb
336/1,2-ࢪࢡ࢚ࣟࣟࢱࣥ⁐ᾮ࡬ࡢ 95gNb ࠾ࡼࡧ 179Ta ࡢ࠾ࡼࡧ 179Ta ࡢศ㓄ẚ D ࡢ Aliquatᢳฟᣲື
336 ⃰ᗘ౫Ꮡᛶࢆㄪᰝࡋࡓ࡜ࡇࢁࠊ
Nb, Ta ࡜ࡶ࡟ 1 ౯ࡢ㝜࢖࢜ࣥࣇࢵ໬≀㘒యࡀᢳฟࡉࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋウㄽ఍࡛ࡣAliquat 336 ࢆ⏝࠸ࡓ࣐ࢡࣟ㔞࡛ࡢ Nb, Ta ࡢᢳฟ⤖ᯝ࡟ࡘ࠸࡚ࡶሗ࿌ࡋࠊࡇࢀࡽࡢ⤖ᯝࢆࡶ࡜࡟ᢳฟ໬Ꮫ✀࡟㛵ࡍࡿ⪃ᐹࢆ⾜࠺ࠋExtraction behavior of Nb and Ta with Aliquat 336 in HF solution
SATO, D., MURAKAMI, M., HABA, H., KIKUNAGA, H., OOE, K., GOTO, S., KUDO, H.

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1A11

Db ࡢ໬Ꮫᐇ㦂࡟ྥࡅࡓ 5 ᪘ඖ⣲ Nb, Ta ࡢ࢜ࣥࣛ࢖ࣥ㏫┦ࢡ࣐ࣟࢺࢢࣛࣇ࢕࣮᪂₲኱㝔⮬↛ ࠊ⌮◊ோ⛉ࢭ ࠊ᪂₲኱⌮ ࠊཎᏊຊᶵᵓ ࠊ㔠ἑ኱㝔⮬↛  
‫ۑ‬ὠ⸨⩧ᖹ ࠊᮧୖᫀྐ ࠊ኱Ụ୍ᘯ ࠊᚋ⸨┿୍ ࠊబ⸨኱㍜ ࠊᚋ⸨ᑦဢ ࠊᑠᒣᕦ ࠊ㛗ᒸဴஓ ࠊᮏᒣᮤἋ ࠊ⩚ሙᏹග ࠊᑠ᳃᭷ᕼᏊ ࠊ㇏ᔱཌྐ ࠊ
໭ᒣ㞝ኴ ࠊ⚟⏣ⰾᶞ ࠊᕤ⸨ஂ᫛ 䛆⥴ゝ䛇㻌 105 ␒ඖ⣲ࢻࣈࢽ࣒࢘(Db)࡟ᑐࡍࡿヲ⣽࡞໬Ꮫⓗ▱ぢࡣᮍࡔᚓࡽࢀ࡚࠾ࡽࡎࠊ௒ᚋࡢ
◊✲ࡀᚅࡓࢀࡿ࡜ࡇࢁ࡛࠶ࡿࠋᡃࠎࡣ Db ࡢ໬Ꮫᐇ㦂࡟ྥࡅࠊྠ᪘ඖ⣲࡛࠶ࡿ Nb, Ta ࢆ⏝࠸ࡓࣜࣥ㓟ࢺࣜࣈࢳࣝ(TBP)࡟ࡼࡿࣇࢵ໬Ỉ⣲㓟Ỉ⁐ᾮ࠿ࡽࡢᾮ┦ᢳฟ࠾ࡼࡧᅛ┦ᢳฟࢆ⾜ࡗ࡚ࡁࡓ[1]ࠋࡑࡢ⤖ᯝࠊNb ࡜ Ta ࡛␗࡞ࡿᢳฟᣲືࡀ☜ㄆࡉࢀࠊࡇࡢᢳฟ⣔ࡀ Db ࡢᢳฟᐇ㦂࡟᭷ᮃ࡛࠶ࡿࡇ࡜ࡀࢃ࠿ࡗࡓࠋࡑࡇ࡛ࠊᮏ◊✲࡛ࡣ Nb, Ta ࢆ⏝࠸ࡓ⮬ື㎿㏿໬Ꮫศ㞳⿦⨨(ARCA)࡟ࡼࡿ࢜ࣥࣛ࢖ࣥ㏫┦ࢡ࣐ࣟࢺࢢࣛࣇ࢕࣮ᐇ㦂ࢆ⾜࠸ࠊDb ࡢ໬Ꮫᐇ㦂࡟ࡴࡅࡓ᭱㐺ᐇ㦂᮲௳ࢆ᳨ウࡋࡓࠋ

Eluted activity /%䛆ᐇ㦂䛇㻌 ⌮◊ AVF ࢧ࢖ࢡࣟࢺࣟࣥ࡟࠾࠸࡚ࠊ24 MeV ࡢ㔜㝧Ꮚࣅ࣮࣒ࢆ⏝࠸ࠊnatZr(d, xn), natHf(d,xn)཯ᛂ࡟ࡼࡾࠊ90Nb(T1/2 = 14.6 h)ࠊ 178Ta(T1/2 = 2.45 h)ࢆྜᡂࡋࡓࠋ᰾཯ᛂ⏕ᡂ≀ࢆ He/KCl ࢞ࢫࢪ࢙ࢵࢺἲ࡟ࡼࡾᦙ㏦ࡋࠊARCA ෆ㒊ࡢᤕ㞟㒊࡟࠾࠸࡚ 60 ⛊㛫ᤕ㞟ࡋࡓࠋᤕ㞟≀ࢆ✀ࠎࡢ⃰ᗘࡢࣇࢵ໬Ỉ⣲㓟Ỉ⁐ᾮ࡛⁐ゎࡋ࡚ࠊὶ㏿ 0.25-1 mL/min ࡛࣒࢝ࣛ࡟ὶࡋࠊ7 ࣇࣛࢡࢩࣙࣥ
࡟᥇ྲྀࡋࡓࠋࡑࡢᚋࠊ10 M HF ࢆὶ㏿ 1 mL/min ࡛ὶࡋ࡚ࠊྛࣇࣛࢡࢩࣙࣥࡢ㔜㔞࡜!⥺ࢆᐃࡋࡓࠋ࣒࢝ࣛࡢࢧ࢖ࢬࡣෆᚄ 1.6 mm " 㧗ࡉ 7 mm ࡛ࠊ࣒࢝ࣛ࡜ࡋ࡚ࢫࢳࣞࣥ㸫ࢪࣅࢽࣝ࣋
ࣥࢮࣥඹ㔜ྜయ࡛࠶ࡿ CHP20/P30(୕⳻໬Ꮫࠊ
⢏ᚄ 30 #m)ࡢẕయ࡟ TBP ࢆᢸᣢࡉࡏࡓᶞ⬡[2]
100
90g
ࢆ⏝࠸ࡓࠋ
Nb
80
178
䛆⤖ᯝ䛸⪃ᐹ䛇 62-wt. % TBP ᶞ⬡࡟ᑐࡋ࡚ 1 M
Ta
HF ࢆ 1 mL/min ࡛ὶࡋࡓ᫬ࡢ 90Nb, 178Ta ࡢ⁐㞳᭤⥺ࢆᅗ 1 ࡟♧ࡍࠋNb ࡣ࡯࡜ࢇ࡝ᶞ⬡࡟྾╔ࡏࡎ࡟⁐ฟࡋ࡚࠸ࡿ୍᪉࡛ࠊTa ࡣ⁐ฟయ✚ࡀ⣙ 0.5 mL ࡟⁐㞳ࣆ࣮ࢡࢆᣢࡗ࡚࠾ࡾࠊ2 ࡘࡢඖ⣲ࡀ␗࡞ࡿ⁐㞳ᣲືࢆ♧ࡍࡇ࡜ࡀศ࠿ࡿࠋ

60
40
20
0
0

ࡲࡓࠊTa ࡢࣆ࣮ࢡ఩⨨࠿ࡽᚓࡽࢀࡿศ㓄ಀᩘ

0.5

1

1.5

2

Eluted volume /mLࡀࣂࢵࢳᅛ┦ᢳฟ࡟ࡼࡿ⤖ᯝࢆ෌⌧ࡋࡓࠋࡇࢀࡣ࣒࢝ࣛෆ࡛ࡢᢳฟࡀᖹ⾮࡟฿㐩ࡋ࡚࠸ࡿᅗ 1. 62-wt. % TBP ᶞ⬡࡜ 1 M HF ࡢ࢜ࣥࣛ࢖

ࡇ࡜ࢆ♧ࡋ࡚࠸ࡿࠋࡇࡢᐇ㦂᮲௳࡛ࠊDb ࡢ໬

ࣥ㏫┦ࢡ࣐ࣟࢺࢢࣛࣇ࢕࣮࡟ࡼࡿࠊ90gNb ࡜Ꮫᐇ㦂ࢆ⾜࠺ࡇ࡜ࡀᮇᚅࡉࢀࡿࠋ

170

Ta ࡢ⁐㞳ᣲືࠋ[1] M. Murakami et al., 5th Asia-Pacific Symposium on Radiochemistry ʹ13 (APSORC13) 24-NCP-07 (2013)[2] H. Haba et al., Radiochim.. Acta 95, 1 (2007)

On-line reversed-phase chromatography of group-5 elements, Nb and Ta, for the chemical experimentof dubnium (Db)
TSUTO, S., MURAKAMI, M., OOE, K., SATO, D., GOTO, N., KOYAMA, T., NAGAOKA, T.,
MOTOYAMA, R., HABA, H., KOMORI, Y., TOYOSHIMA, A., KITAYAMA, Y., FUKUDA, Y.,
KUDO, H.

- 39 -

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ߡኻ⒓ಽⵚ߳ߣ♽⛔⊛ߦᄌൻߔࠆ‫ޕ‬㕖ኻ⒓ᩭಽⵚߩਥ
ߥℂ↱ߪ‫ޔ‬ੑ㊀㐽Ზߢ޽ࠆ 132Sn㧔Z = 50‫ޔ‬N = 82㧕ઃㄭߩේሶᩭ߇㊀޿ᩭಽⵚߣߒߡᒻᚑߐࠇ߿ߔ޿ߚ߼ߢ

޽ࠆߣቯᕈ⊛ߦ⠨߃ࠄࠇߡ޿ࠆ‫৻ޕ‬ᣇ‫ޔ‬ේሶᩭ߇シ޿ ࿑ 1 ᩭಽⵚ ⾰㊂ᢙಽᏓߩℂ⺰੍᷹႐วߪ‫ޔ‬
ᶧṢ⊛ߥኻ⒓ಽⵚ߇㕖ኻ⒓ಽⵚߦᲧߴఝ൓ߣߥ
ࠆߣ⠨߃ࠄࠇߡ޿ࠆ‫ޕ‬ᦨㄭ‫ޔ‬180Tl ߩ β+፣უㆃ⊒ᩭಽⵚ‫ ߜࠊߥߔޔ‬180Hg ߩᩭಽⵚߦ߅ߌࠆᩭಽⵚ

ߩ⾰㊂ಽᏓ߇᷹ቯߐࠇߚ[1][2]‫ޕ‬Ზ᭴ㅧࠍ⠨߃ࠇ߫‫ޔ‬180Hg㧔Z = 80‫ޔ‬N = 100㧕ߪ‫ޔ‬ਛᕈ
ሶᢙ 50 ߩ㝷ᴺᢙߣ㓁ሶᢙ 40 ߩḰ㝷ᴺᢙߩᓇ㗀ࠍฃߌߡ‫ޔ‬
2 ߟߩ 90Zr㧔Z = 40‫ޔ‬N = 50㧕ߦኻ⒓ಽⵚߔࠆߣ੍᷹ߐࠇ

ߡ޿ߚ߇‫ޔ‬ታ㛎⚿ᨐߪߎࠇߣ⇣ߥࠅ㕖ኻ⒓ಽⵚߢ޽ߞߚ‫ޕ‬࿑ 2 ታ㛎ߩ࠮࠶࠻ࠕ࠶ࡊߩ᭎⇛࿑ߎߩ⊒⷗ࠍᯏߦ‫ޔ‬ᄙߊߩℂ⺰⊛⠨ኤ߇ߐࠇߚ‫ޕ‬P. Möller ߣ J. Randrup ߪ‫ޔ‬ᩭಽⵚ ߩ⾰㊂ᢙಽᏓࠍᄢၞ⊛ߦ੍᷹ߒߚ⚿ᨐࠍႎ๔ߒߚ㧔࿑ 1㧕
‫ ߣࠆࠃߦࠇߎޕ‬180Hg ߪ㕖ኻ⒓ಽⵚߒ‫ࠄߐޔ‬ߦ W ߆ࠄ Ir ߦ⥋ࠆਛᕈሶㆊ೾ᩭߢߪ‫ߥࠢ࡯࠾࡙ޔ‬㕖ኻ⒓ᩭಽⵚࠍߔࠆߣ੍᷹ߒߚ‫ޕ‬ᧄ⎇ⓥߢߪ‫ޔ‬Ir ห૏૕ߩᩭಽⵚߦ⌕⋡ߒ‫ޔ‬ᩭಽⵚ․ᕈࠍ♽⛔⊛ߦ᷹ቯߔࠆߎߣߢ‫ ╙ޔ‬3 ߩ㗔ၞߣ߽޿߃ࠆᣂߚߥ⾰㊂㕖ኻ⒓㗔ၞࠍ⷗಴ߔߎߣࠍ⋡⊛ߣߒߚ‫ޕ‬
2. ታ㛎 ታ㛎ߪ‫ޔ‬ේሶജᯏ᭴ߩ࠲ࡦ࠺ࡓടㅦེᣉ⸳ߢⴕߞߚ‫ޕ‬࿑2ߦታ㛎ߩ࠮࠶࠻ࠕ࠶ࡊࠍ␜ߔ‫ޕ‬7Li+ 182,184,186WߩᩭⲢว෻ᔕࠍ↪޿ߡⶄวᩭ189,191,193Irߩᩭಽⵚࠍ⺞ߴࠆߎߣߣߒߚ‫ޕ‬ᬌ಴ེߦߪ‫ޔ‬૏⟎ᬌ಴น⢻ߥᄙ⧌✢ᑼᲧ଀⸘ᢙᬌ಴ེ㧔MWPC㧕2บࠍ↪޿‫ޔ‬૏⟎ᖱႎ߅ࠃ߮2บߩMWPC߆ࠄߩାภߩᤨ㑆Ꮕࠍ⸥㍳ߒߚ‫ߩࠄࠇߎޕ‬ᖱႎ߆ࠄㆇേቇ⊛ߦ‫ޔ‬ᩭಽⵚ ߩ⾰㊂ᢙࠍ᳿ቯߒ
ߚ‫⚿ߩߎޕ‬ᨐ߆ࠄ‫ޔ‬7Li + 186W෻ᔕߢ⾰㊂㕖ኻ⒓ಽⵚࠍ᷹ⷰߒߚ‫ޕ‬࡮ෳ⠨ᢥ₂[1] A.N.Andreyev et al., Phys. Rev. Lett 105, 252502 (2010).
[2] J.Elseviers et al., Phys. Rev. C88, 044321 (2013).
Mass asymmetry fission that was observed by 7Li + 186W reaction.
TAMURA, N.,HIROSE, K.,NISHIO,K.,NISHINAKA, I.,MAKII, H.,ORLANDI, R.,LEGUILLON, R.,
SMALLCOMBES, J.,ANDREYEV, A.,OHTSUKI, T.,TSEKHANOVICH, T.,MOLLER, P.,OOE, K.,
GOTO, S.,KUDO, H..

- 41 -

1A14

໬Ꮫࢺ࣮ࣞࢧ࣮฼⏝ࢆ┠ᣦࡋࡓ 7FP ࡢ༙ῶᮇኚ໬

ᐃᮾ໭኱㟁Ꮚගࢭ ࠊி኱⅔  ‫⳥ۑ‬Ọⱥᑑ ࠊ㧗ᐑᖾ୍ ࠊ኱ᵳ໅ 䛆䛿䛨䜑䛻䛇㻌 ㏻ᖖ㸪ෆ㒊㌿᥮㐣⛬࡛ࡣ㸪ཎᏊ᰾ෆ࡛ࡢᏑᅾ☜⋡ࡀ኱ࡁ࠸ K Ẇ㟁Ꮚࡀᨺฟࡉࢀࡿ
ࡀ㸪ෆẆ㟁Ꮚࡢ᮰⦡࢚ࢿࣝࢠ࣮ࡼࡾཎᏊ᰾ࡢບ㉳࢚ࢿࣝࢠ࣮ࡀపࡃ࡞ࡿ࡜㸪ෆẆ㟁Ꮚࡢᨺฟࡀ⚗Ṇࡉࢀ㸪ࡼࡾእẆࡢ㟁Ꮚ࡜┦஫స⏝ࡍࡿࡼ࠺࡟࡞ࡿࠋࡇࡢࡼ࠺࡞᰾✀࡛ࡣ㸪໬Ꮫ≧ែ㸦እẆ㟁Ꮚࡢ≧ែ㸧ࢆኚ໬ࡉࡏࡿ࡜ෆ㒊㌿᥮㐣⛬ࡢศࡔࡅ༙ῶᮇࡀኚ໬ࡍࡿࠋࡇࡢࡼ࠺࡞༙ῶᮇ
ኚ໬ࢆ㉳ࡇࡍ᰾✀ࡢ୍ࡘ࡜ࡋ࡚ 99Tcm㸦㉁㔞ᩘ 99 ࡢࢸࢡࢿࢳ࣒࢘ࡢ‽Ᏻᐃ≧ែ㸧ࡀ▱ࡽࢀ࡚࠸ࡿࠋᮏ◊✲࡛ࡣࡇࡢ༙ῶᮇኚ໬ࢆ฼⏝ࡋ࡚㸪ศගᏛⓗ᪉ἲࢆ⏝࠸࡚ᵓ㐀᝟ሗ➼ࢆ ᐃࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠸ᴟᚤ㔞㸦ࢺ࣮ࣞࢧ࣮㔞㸧ࡢࢸࢡࢿࢳ࣒࢘ࡢ໬Ꮫ᝟ሗࢆᚓࡿࡇ࡜ࢆ┠ᣦࡍࠋࡇࢀࡲ࡛ᡃࠎࡣ㸪ඛ⾜◊✲㛫[1, 2]࡛༙ῶᮇኚ໬㔞ࡀ␗࡞ࡗ࡚࠸ࡓ KTcO4 ࡜ Tc2S7 ࡢ໬Ꮫᙧ࡛༙
ῶᮇኚ໬ࡢ෌ ᐃࢆ⾜࠸㸪0.3%⛬ᗘࡢ༙ῶᮇኚ໬ࢆ☜ㄆࡋ࡚࠸ࡿ[3]ࠋ௒ᅇࡣ༙ῶᮇ ᐃ⿦⨨ࢆᨵⰋࡋ࡚㸪ࡼࡾከࡃࡢ໬Ꮫᙧ࡛ 99Tcm ࡢ༙ῶᮇኚ໬ࢆ ᐃࡋࡓࡢ࡛ሗ࿌ࡍࡿࠋ
㻌䛆ᐇ㦂䛇 ࡲࡎ㸪㧗ィᩘ⋡⁐ᾮヨᩱ ᐃ⏝ࡢ༙ῶᮇ ᐃ⿦⨨ࢆ〇సࡋࡓࠋࡇࢀࡲ࡛ࡢ༙ῶᮇ ᐃ⿦⨨ࡣ࢔ࢼࣟࢢ⣔ࡢ࣐ࣝࢳࢳࣕࣥࢿࣝ࢔ࢼࣛ࢖ࢨ㸦MCA㸧ࢆ౑⏝ࡋ࡚࠸ࡿࡓࡵ㸪 ᐃ࡛ࡁࡿヨᩱࡢᙉࡉࡀไ㝈ࡉࢀ࡚࠸ࡓࠋ௒ᅇసᡂࡋࡓ⿦⨨ࡣ㸪㧗ィᩘ⋡ヨᩱ࡟ᑐᛂࡋ࡚⤫ィ⢭ᗘࢆୖࡆࡽࢀࡿࡼ࠺࡟ࣇࣛࢵࢩࣗ ADC ࣮࣋ࢫࡢ MCA ࢆ౑⏝ࡋ࡚࠾ࡾ㸪99Tcm ࡢ༙ῶᮇኚ໬ ᐃࢆຠ⋡ࡼࡃ⾜࠼ࡿࡼ࠺࡟ࡋࡓࠋࡲࡓ㸪ᚑ᮶ࡢ༙ῶᮇ ᐃ⿦⨨ࡣᑡ㔞ࡢᅛయ≀㉁ࡋ࠿ ᐃヨᩱ࡟࡛ࡁ࡞࠿ࡗࡓࡀ㸪௒ᅇస〇ࡋࡓࡶࡢࡣᩘ mL ࡢ⁐ᾮヨᩱࡶ ᐃ࡛ࡁࡿࡼ࠺࡟タィࡋ࡚࠸ࡿࠋ
99
Tcm ࡣ᪥ᮏ࢔࢖ࢯࢺ࣮ࣉ༠఍࠿ࡽ㉎ධࡋࡓࠋ㉎ධࡋࡓ 99Tcm ࡣ࢔࣑ࣝࢼ࣒࢝ࣛ࡟ 2 ᅇ㏻ࡋ㸪
99
Mo ࢆྍ⬟࡞㝈ࡾ㝖ཤࡋ࡚࠿ࡽᐇ㦂࡟⏝࠸ࡓࠋ ᐃヨᩱࡣ 2 ✀㢮ࡢ໬Ꮫᙧࢆ㸯ࢭࢵࢺ࡜ࡋ࡚㸪ྠࡌ 99Tcm ⢭〇⁐ᾮ࠿ࡽసᡂࡋࡓࠋ࣊࢟ࢧࢡࣟࣟࢸࢡࢿࢳ࣒࢘㓟㸦[TcCl6]2-㸪Tc(IV)㸧࠾ࡼࡧ㐣ࢸࢡࢿࢳ࣒࢘㓟㸦TcO4-㸪Tc(VII)㸧ࡢ໬Ꮫᙧ࡛༙ῶᮇኚ໬ࢆ ᐃࡍࡿሙྜࡣ௨ୗࡢࡼ࠺࡟ヨᩱㄪ〇ࢆ⾜ࡗࡓࠋࡲࡎ㸪⣙ 400 kBq ࡢ 99Tcm ⁐ᾮࢆศྲྀࡋ㸪⵨Ⓨ஝ᅛࡋࡓࠋ[TcCl6]2-ヨᩱࡣ㸪ṧࡉࢆ 12 M HCl 5mL ࡟⁐ゎࡋ࢞ࣛࢫࣂ࢖࢔ࣝ⎼࡟ᑒධࡋ࡚సᡂࡋࡓࠋTcO4-ヨᩱࡣ㸪ṧࡉࢆ⵨␃Ỉ 5mL ࡟⁐ゎࡋ㸪࢞ࣛࢫࣂ࢖࢔ࣝ⎼࡟ᑒධࡋ࡚సᡂࡋࡓࠋ
㻌䛆⤖ᯝ䛸⪃ᐹ䛇㻌 ⵨␃Ỉ୰࡜ 12M ሷ㓟୰ࡢ 99Tcm ࡢ༙ῶᮇ࡟ࡣ 0.1%ࡢᕪࡀほ ࡉࢀࡓࠋ⵨␃Ỉ㸸 6.0101±0.0023 h (TcO4-)
  12 M HCl㸸 6.0170±0.0022 h ([TcCl6]2-)ࡇࡢᕪࡣ࡜ࡶ࡟ Tc ࡢ㓟໬ᩘࡀ+7 ࡛࠶ࡿ KTcO4 ࡜ Tc2S7 ࡜ẚ࡭࡚ᑠࡉ࠸ࠋࡇࡢࡇ࡜ࡣ 99Tcm ࡢ༙ῶᮇኚ໬ࡣ Tc ࡢ㓟໬ᩘࡢ㐪࠸ࡼࡾࡶ㘒ᙧᡂࡍࡿ㓄఩Ꮚࡢ㐪࠸࡟ࡼࡿ࡯࠺ࡀᙉࡃᙳ㡪ࡍࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿࠋㅮ₇࡛ࡣ㓟⃰ᗘ౫Ꮡᛶ࡞࡝ࡢ໬Ꮫࢺ࣮ࣞࢧ࣮࡜ࡋ࡚ࡢ฼⏝࡟ࡘ࠸࡚ࡶ㆟ㄽࡍࡿணᐃ࡛࠶ࡿࠋ
㻌䛆ཧ⪃ᩥ⊩䛇㻌
[1] K. T. Bainbridge et al., Phys. Rev. 90, 430 (1953)[2] H. Mazaki et al., Phys. Rev. C 21, 344 (1980)[3] H. Kikunaga et al., Proc. Radiochim. Acta 1, 113 (2011)
Variation measurements of decay constants of Tc-99m as a chemical tracer
KIKUNAGA, H., TAKAMIYA, K., OHTSUKI, T.

- 42 -

1A15! "#$%&'()*+ GARIS-II ,-./0&12.345678(!"#$% 1&'()!* 2&+()!*&,-!() 4&.()/ 5&0123
4 6&5(! 7) ○67(8 1&9:;< 1&=>?@ 1&ABCD 1&E'FG 1,2&
'HIJK 1,3&LMNO 1,4&M. Huang1&PQRS 1&TUVW 1,5&XYZ[ 6&9L\] 1,7
9=8¿ÀeÁ!"rjsaÂ6^_ÃÄdzqÅÆ¡¿ÀÇÈnÉÊxË}
Target: 300 µg/cm2 197Au on 60 µg/cm2 C
Projectile: 114 MeV 22Ne6+
Filled gas: pure He or He-H2 mixture (H2 36%)()*+),-*.$/0$%!123$4567"$8)-*9$:;<29!"#$6^_"`%abcde&fghijklmnopqrjsatuvwxyz{
D|}~r xq.pv GARIS-II nz{p~dx&241Am lK&40Ar cxy~lm 0 v&¡¢x 40Ar £¤vwD|¥nop{&v¦{§:¨©(ª«¬g­®ak¯°K±²³´µ¶n·}~¦)n¸¹{ºq[1,2]:"`de&22Ne £¤t
uvwxyz{D|}~vwD|¥nop{&GARIS-II »¼n½¾q
'&$
%#$
%&$
!#$

:86+$;+$'':5$;+>;%$=-?*86+$@'AB$;%C$
'':5$

!&$
#$

>?@AB
&$
Ì GARIS-II ÄÍÎÏK&ÐÑÒÓvwx
!"#$%$!ρ$4<=9$Ñ}~«¬g­®ÔakªÕÑÖ¦{
He-H2 ×uØÙÚonÛÜ{ºqÝÞ ç 1. GARIS-II èéêx=$~ 214Ac ë 
eßà{&ÐÑÒÓvw 197Au(22Ne,5n)214Ac
÷ØÙ¦{&Pure He ¦ He-H2 ×uØxÑ{ He-H2 ×uØÙnopqÏ¨áÀÙnopq>u%&nzqâãxäqåænç
ç 1 xË
}
eßàx&ØÙ¦{ Pure He nop{èéêd 214Ac ë ìí²¦¡~ Bρînïqð&ØÙnñò{óôõönzqë ÷øcgùe 11%²púûüý
þ&214Ac ë /ÿ 20%U!q"#eØÙMn$¨}~vjsaS%S&'(ì)I*¡zq+x,-&ð#e He-H2 ×uØÙ¦.r/012ì)I*¡z{p~¦n34}~ë ÷í¸îd«¬g­®ÔakÍ5¶e 589 cps(pure He)K
120 cps (He-H2 ×uØÙ)û¦6Õ&He-H2 ×uØÙ·o»n¿ÀmxÛ7}~¦ìdºqÌ :89de&:;n<à:"`däqÐÑÒÓxÑ}~ GARIS-II »¼ (³´µ¶=y¢«¬g­®Ôak>!")x±p{#]}~
CADE[1] D. Kaji et al., Nucl. Instrum. Methods B317, 311 (2013).
[2] D. Kaji et al., JPS Conf. Proc. 1, 013051 (2014)

Performance test of a gas-filled recoil separator GARIS-II for asymmetric fusion reactions
KAJI, D., MORIMOTO, K., HABA, H., WAKABAYASHI, Y., TAKEYAMA, M., YAMAKI, S.,TANAKA, K., HUANG, M., KANAYA, J., MURAKAMI, M., ASAI, M., MORITA, K.

- 43 -

1A16

㔜࢔ࢡࢳࣀ࢖ࢻඖ⣲ࣀ࣮࣒࣋ࣜ࢘(No, Z = 102) ࡢ➨୍࢖࢜ࣥ໬࢚ࢿ
ࣝࢠ࣮ᐃ(ཎᏊຊᶵᵓ 1ࠊⲈᇛ኱ 2ࠊᚨᓥ኱ 3ࠊ⌮◊ோ⛉ࢭ 4ࠊ᪂₲኱ 5ࠊ࣐࢖ࣥࢶ
኱ 6ࠊCERN7) ‫ۑ‬బ⸨ဴஓ 1ࠊὸ஭㞞ே 1ࠊ㔠㇂భு 1,2ࠊሯ⏣࿴᫂ 1ࠊ㇏ᔱཌྐ 1ࠊA. Vascon1ࠊṊ⏣᫴స 1,3ࠊỈ㣫⛅⳯ 1,2ࠊỌ┠ㅍ୍㑻 1,2ࠊᕷᕝ㐍୍ 1,4ࠊ∾஭ᏹஅ 1ࠊ㛗 ᫂ᙪ 1ࠊ㜰㛫 ⛱ 3ࠊ኱Ụ୍ᘯ 5ࠊబ⸨኱㍜ 5ࠊM. Schädel1ࠊ
J. V. Kratz1,6ࠊT. Stora7

 ཎᏊ␒ྕࡀ 100 ࢆ㉸࠼ࡿඖ⣲࡛ࡣࠊᑐ㇟ඖ⣲࡟Ᏻᐃࡲࡓࡣ㛗ᑑ࿨ྠ఩యࡀᏑᅾࡏࡎࠊຍ㏿ჾࢆ⏝࠸ࡓ㔜࢖࢜ࣥ཯ᛂ࡛⏕ᡂࡍࡿ▷ᑑ࿨ྠ఩యࡋ࠿ྲྀࡾᢅ࠺ࡇ࡜ࡀ࡛ࡁ࡞࠸ࠋࡑࡢࡓࡵࠊ
ࡇࢀࡲ࡛࡟➨୍࢖࢜ࣥ໬࢚ࢿࣝࢠ࣮(IP)ࡀ ᐃࡉࢀࡓ౛ࡣ࡞࠿ࡗࡓࠋᡃࠎࡣࠊࡇࡢࡼ࠺࡞͆ཎ
Ꮚ୍ಶࡢ໬Ꮫ͇ⓗྲྀᢅ࠸ࡀせồࡉࢀࡿ㔜࣭㉸㔜ඖ⣲࡟㐺⏝ྍ⬟࡞ IP Ỵᐃἲࢆ☜❧ࡍࡿࡓࡵࠊ㧗 ࡢ㔠ᒓ⾲㠃࡛㉳ࡇࡿ⾲㠃㟁㞳㐣⛬࡟╔┠ࡋࡓࠋᮏᡭἲ࡛ࡣࠊ⾲㠃㟁㞳㐣⛬࡟࠾ࡅࡿ࢖࢜
ࣥ໬ຠ⋡ࡀ IP ౫Ꮡᛶࢆࡶࡘࡇ࡜ࢆ฼⏝ࡋ࡚ IP ࢆỴᐃࡍࡿࠋ௒ᅇࠊᮏᡭἲࢆ⏝࠸࡚ࠊ㔜࢔ࢡࢳࣀ࢖ࢻඖ⣲ࣀ࣮࣒࣋ࣜ࢘(No, Z = 102)ࡢ IP ࢆỴᐃࡋࡓࠋ
ᐇ㦂ࡣࠊཎᏊຊᶵᵓࢱࣥࢹ࣒ຍ㏿ჾᐇ㦂᪋タ࡛⾜ࡗࡓࠋᮏᐇ㦂⣔࡟࠾ࡅࡿ࢖࢜ࣥ໬ຠ⋡ࡢ IP౫Ꮡᛶࢆㄪ࡭ࡿࡓࡵࠊ✀ࠎࡢ᰾཯ᛂ natGe+11B, 151Eu/156Gd/162Dy+11B, 136Ce/141Pr/159Tb/141Nd/147Sm+11B ࡞ࡽࡧ࡟ 45Sc+11B ࢆ⏝࠸࡚ࠊ▷ᑑ࿨ྠ఩య 80Rb, 157Er, 162Tm, 168Lu, 142,143Eu, 143mSm, 148Tb,
153,154
Ho, 165Yb ࡞ࡽࡧ࡟ 49Cr ࢆ⏕ᡂࡋࠊྛྠ఩యࡢ࢖࢜ࣥ໬ຠ⋡ࢆ ᐃࡋࡓࠋࢱࣥࢹ࣒ຍ㏿ჾ࠿ࡽࡢ㔜࢖࢜ࣥࣅ࣮࣒ࢆ⏝࠸࡚⏕ᡂࡋࡓ᰾཯ᛂ⏕ᡂ≀ࡣࠊHe/CdI2 ࢞ࢫࢪ࢙ࢵࢺᦙ㏦ἲ࡟ࡼࡾࠊ
࢜ࣥࣛ࢖ࣥྠ఩యศ㞳ჾ(JAEA-ISOL)࡟⿦╔ࡉࢀࡓ⾲㠃㟁㞳ᆺ࢖࢜ࣥ※࡬࡜ᦙ㏦ࡉࢀࡿ[1]ࠋ
ᦙ㏦ࡉࢀࡓ᰾཯ᛂ⏕ᡂ≀ࡣࠊ࢖࢜ࣥ※ෆ࡛⾲㠃㟁㞳ἲ࡟ࡼࡾ࢖࢜ࣥ໬ࡉࢀࡓᚋࠊຍ㏿ࡉࢀࠊ㉁㔞ศ㞳ࡉࢀࡿࠋ㉁㔞ศ㞳࡟ࡼࡾ㑅ูࡉࢀࡓ┠ⓗྠ఩య࢖࢜ࣥࢆ ISOL ᮎ➃࡛ᤕ㞟ࡋࠊ!ࡲࡓ
ࡣ" ᐃ࡟ࡼࡾ࢖࢜ࣥ཰㔞ࢆỴᐃࡍࡿࠋ࢖࢜ࣥ໬ຠ⋡ࢆ⟬ฟࡍࡿࡓࡵࠊ࢞ࢫࢪ࢙ࢵࢺᦙ㏦ࡉࢀࡓ᰾཯ᛂ⏕ᡂ≀ࡢ┤᥋ᤕ㞟࣭ ᐃࡶྜࢃࡏ࡚⾜ࡗࡓࠋྠᵝ࡟ࠊ248Cm(13C, 4n)཯ᛂ࡟ࡼࡾ 257No(༙ῶᮇ 24.5 ⛊)ࢆ⏝࠸࡚ࠊྠ୍࢖࢜ࣥ໬᮲௳ୗ࡟࠾ࡅࡿ No ࡢ࢖࢜ࣥ໬ຠ⋡ࢆ ᐃࡋࡓࠋ௨ୖࡢ⤖ᯝࠊ࢖࢜ࣥ※ ᗘ 2800 K ࠾ࡼࡧ 2900 K ࡟ࡘ࠸࡚ࠊ⣙ 5.5 eV~7 eV ࡢ⠊ᅖ࡛ IP Ỵᐃࡀྍ⬟࡞ IP-࢖࢜ࣥ໬ຠ⋡┦㛵᭤⥺ࢆᚓࡿࡇ࡜ࡀ࡛ࡁࡓࠋ257No ࡢ࢖࢜ࣥ໬ຠ⋡ࡣࠊ2900 K ࡢ࡜ࡁ 0.8 %ࠊ2800 K ࡢ࡜ࡁ 0.6%࡛࠶ࡗࡓࠋᚓࡽࢀࡓ࢖࢜ࣥ໬ຠ⋡࡟ᑐࡋ࡚┦㛵᭤⥺ࢆ㐺⏝ࡋࠊ
No ࡢ IP ࢆồࡵࡓ࡜ࡇࢁࠊࡑࡢ್ࡣ 6.6 eV ࡛࠶ࡗࡓࠋᮏ ᐃ್ࡣࠊࡇࢀࡲ࡛ No ࡟ࡘ࠸࡚㍍
࠸࢔ࢡࢳࣀ࢖ࢻඖ⣲࠿ࡽࡢእᤄ࡟ࡼࡾぢ✚ࡶࡽࢀࡓ್ 6.65 eV[2]࡜ࡼࡃ୍⮴ࡋࡓࠋ
[1] Sato, T. K. et al. Rev. Sci. Instrum. 84 (2013) 023304.
[2] Sugar, J., J. Chem. Phys., 60 (1974) 4103.

Measurement of the first ionization potential of nobelium (No, Z=102)
SATO, T. K., ASAI, M., KANEYA, Y., TSUKADA, K., TOYOSHIMA, A., VASCON, A., TAKEDA,
S., MITSUKAI, A., NAGAME, Y., ICHIKAWA, S., MAKII, H., OSA, A., SAKAMA, M., OOE, K.,
SATO, D., SCÄDEL, M., KRATZ, J. V., STORA, T.

- 44 -

1A17㉸࢔ࢡࢳࣀ࢖ࢻඖ⣲ࢩ࣮࣮࣎ࢠ࣒࢘ 6J ࡢ㑏ඖ࡟ࡴࡅࡓྠ᪘ඖ⣲ 0R ࡜: ࡢ㟁ゎ㑏ඖཎᏊຊᶵᵓ ࠊᗈᓥ኱ ࠊ᪂₲኱ ࠊ㔠ἑ኱ ࠊ࢜ࢫࣟ኱ ࠊⲈᇛ኱ ࠊ⌮◊ ࠊ኱㜰኱ ࠊ࣐࢖ࣥࢶ኱ ࠊ*6, ‫ۑ‬㇏ᔱཌྐ 1ࠊᐑୗ┤ 2ࠊ኱Ụ୍ᘯ 3ࠊ໭ᒣ㞝ኴ 4ࠊ

Hans Vegeland Lerum5ࠊᚋ⸨ᑦဢ 3ࠊ㔠㇂భு 1,6ࠊᑠ᳃᭷ᕼᏊ 7,8ࠊỈ㣫⛅⳯ 1,6ࠊAlessio Vascon1ࠊὸ஭㞞ே 1ࠊబ⸨ဴஓ 1ࠊሯ⏣࿴᫂ 1ࠊ໭㎷❶ᾈ 1ࠊỌ┠ㅍ୍㑻 1ࠊMatthias Schädel1ࠊMohamed Fathy
Attallah5ࠊNalinava Sen Gupta5ࠊJon Petter Omtvedt5ࠊὠ⸨⩧ᖹ 3ࠊᢲぢྜྷᡂ 3ࠊᑠᒣᕦ 3ࠊ⏣୰ᙲ
3

ࠊబ⸨኱㍜ 3ࠊ➟ᯇⰋᓫ 8ࠊᶓ໭༟ஓ 8ࠊ㔜Ἑඃ኱ 8ࠊ⠛ཎཌ 8ࠊྂ㈡࿴ᶞ 2ࠊ㔠Ꮚᨻᚿ 2ࠊᶓᒣ᫂ᙪ 4ࠊ⩚ሙᏹග 7ࠊMinghui Huang1,7ࠊJens Volker Kratz9ࠊValeria Pershina10䛆⥴ゝ䛇㻌 ᡃࠎࡢࢢ࣮ࣝࣉ࡛ࡣࠊ㉸࢔ࢡࢳࣀ࢖ࢻඖ⣲ࢩ࣮࣮࣎ࢠ࣒࢘㸦Sg㸧ࡢ㑏ඖᐇ㦂࡟ྥࡅࡓ‽ഛᐇ㦂ࢆ㐍ࡵ࡚࠸ࡿࠋᐇ㦂࡟౑⏝࡛ࡁࡿ 265Sg ࡣ༙ῶᮇࡀ⣙ 10 ⛊࡜▷ࡃࠊ⏕ᡂ᩿㠃✚ࡶᑠࡉ࠸ࡓࡵࠊ௨ୗࡢᡭ㡰ࡢ㐃⥆࢜ࣥࣛ࢖ࣥᐇ㦂ࢆ⾜࠺㸸1㸧Sg ࢆỈ⁐ᾮ࡟⁐ゎࠊ2㸧ࣇ࣮ࣟ㟁ゎ࣒࡛࢝ࣛ㟁ゎ㑏ඖࠊ3㸧㑏ඖࡉࢀࡓ 4 ౯࢖࢜ࣥ࡜㑏ඖࡉࢀ࡚࠸࡞࠸ 6 ౯࢖࢜ࣥࢆ⁐፹ᢳฟ࡟ࡼ
ࡾศ㞳ࠊ4㸧ᾮయࢩࣥࢳ࣮ࣞࢩࣙࣥ
176

ᐃࠋᮏ◊✲࡛ࡣࠊSg ࡢྠ᪘ඖ⣲࡛࠶ࡿ 93mMo ࡞ࡽࡧ࡟W ࢆ⏝࠸ࠊୖグࡢ 2㸧㟁ゎ㑏ඖ࡜ 3㸧⁐፹ᢳฟศ㞳ࡀྍ⬟࡞⁐ᾮ᮲௳ࢆ᥈⣴ࡋࡓࠋ䛆ᐇ㦂䛇㻌 ᐇ㦂ࡣཎᏊຊᶵᵓࢱࣥࢹ࣒ຍ㏿ჾ᪋タ࡟࠾࠸࡚⾜ࡗࡓࠋ7Li ࣅ࣮࣒ࡸ 11B ࣅ࣮࣒ࢆ⏝࠸ࡓ㔜࢖࢜ࣥ᰾཯ᛂ࡟ࡼࡾ 93mMo ࡞ࡽࡧ࡟ 176W ࢆ⏕ᡂࡋࡓࠋࡇࢀࡽࢆ He/KCl ࢞ࢫࢪ࢙ࢵࢺ
ἲ࡟ࡼࡾ໬Ꮫᐊࡲ࡛ᦙ㏦ࡋࠊ3 ศ㛫ᤕ㞟ࡋࡓᚋࠊᩘⓒ!L ࡢ◲㓟Ỉ⁐ᾮ࠶ࡿ࠸ࡣ◲㓟࡜㐣ሷ⣲㓟ࡢΰྜỈ⁐ᾮ࡟⁐ゎࡋࡓࠋࡇࢀࢆ 0.4 V ࠿ࡽ-1.4 V ࡲ࡛ࡢ㟁ᅽ㸦vs. Ag/AgCl ཧ↷㟁ᴟ㸧ࢆ༳ຍࡋࡓࣇ࣮ࣟ㟁ゎ࣒࢝ࣛ࡟ᑟධࡋࡓᚋࠊ࣒࢝ࣛ࠿ࡽࡢ⁐ฟᾮࢆ཰㞟ࡋࡓࠋࡉࡽ࡟ࡇࡢ⁐ฟᾮࢆࢺࣜ࢖ࢯ࢜ࢡࢳࣝ࢔࣑ࣥ㸦TOA㸧㸫ࢺ࢚ࣝࣥ⁐፹࡜ΰྜࡋ࡚ 1 ศ㛫᣺࡜࠺ࡋࡓᚋࠊ30 ⛊103㛫㐲ᚰศ㞳ࡋࡓࠋࡑࡢᚋࠊ୧┦࠿ࡽྠ㔞ศྲྀࡋ࡚"⥺ࢆ ᐃࡋࠊศ㓄ẚ D ࢆホ౯ࡋࡓࠋD ࡣ᭷ᶵ┦࡜Ỉ┦࡟ྵࡲࢀࡿᨺᑕ⬟ẚ࡜ࡋ࡚ᐃ⩏ࡋࡓࠋ㟁ゎ㑏ඖࡋࠊ0.2 M TOA ࡬ᢳฟࡋࡓ⤖ᯝࢆᅗ 1 ࡟D䛆⤖ᯝ䛸⪃ᐹ䛇㻌 ୍౛࡜ࡋ࡚◲㓟/㐣ሷ⣲㓟Ỉ⁐ᾮ࡛

102

101

♧ࡍࠋᶓ㍈ࡣ㟁ゎ࡟࠾ࡅࡿ༳ຍ㟁ᅽࠊ⦪㍈ࡣᢳฟ࡟࠾ࡅࡿ D ್ࢆ♧ࡋ࡚࠸ࡿࠋMo ࡢ D ್ࡣ-0.4 V௨ୗ࡛ᛴ⃭࡞ῶᑡࢆ♧ࡍ୍᪉ࠊW ࡢࡑࢀࡣኚ໬ࡋ
࡚࠸࡞࠸ࠋࡇࡢࡼ࠺࡞ኚ໬ࡣ௚ࡢศ㞳᮲௳࡟࠾࠸࡚ࡶほ ࡉࢀ࡚࠾ࡾࠊW ࡀ Mo ࡟ẚ࡭࡚㑏ඖࡉࢀ㞴࠸஦ࢆ♧ࡋ࡚࠸ࡿࠋウㄽ఍࡛ࡣࠊ௚ࡢ㟁ゎ᮲௳

176W

93m Mo

100

-1.5

-1

-0.5
0
Applied potential / V0.5

ᅗ 1㸬0.4 V ࠿ࡽ-1.4 V ࡛ࡢ㟁ゎᚋࡢ 0.1 M◲㓟/0.1 M 㐣ሷ⣲㓟࠿ࡽ 0.2 M TOA ࡬ࡢ

93m
Mo ࡜ 176W ࡢᢳฟᣲືࠋ
ࡸᢳฟ᮲௳࡟ࡘ࠸࡚ࡶሗ࿌ࡍࡿࠋ
Electrolytic reduction of Mo and W as lighter homologues of seaborgium (Sg)TOYOSHIMA, A., MIYASHITA, S., OOE, K., KITAYAMA, Y., LERUM, H. V., GOTO, N., KANEYA, Y.,
KOMORI, Y., MITSUKAI, A., VASCON, A., ASAI, M., SATO, T. K., TSUKADA, K., KITATSUJI Y.,
NAGAME, Y., SCHÄDEL, M., ATTALLH, M. F., GUPTA, N. S., OMTVEDT, J. P., TSUTO, S.,
OSHIMI, Y., KOYAMA, T., TANAKA, A., SATO, D., KASAMATSU, Y., YOKOKITA, T.,
SHIGEKAWA, Y., SHINOHARA, A., KOGA, K., KANEKO, M., YOKOYAMA, A., HABA, H.,
HUANG, M., KRATZ, J. V., PERSHINA, V.

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1B01࣓ࢫࣂ࢘࢔࣮ศගἲཬࡧᨺᑕ໬ศᯒἲࢆ⏝࠸ࡓ
ᮾி‴ὼ ❑ᆅ࡟࠾ࡅࡿ㓟໬㑏ඖ≧ែࡢホ౯㸦ᮾ኱㝔⥲ྜ ࠊி኱ཎᏊ⅔ 㸧‫ۑ‬ᒣᙧṊᗈ ࠊᑠ㇋ᕝ຾ぢ ࠊዟᮧⰋ ࠊ㧗ᐑᖾ୍ ࠊᯇᑿᇶஅ 䛆⥴ゝ䛇ෆ‴࡛࠶ࡿᮾி‴࡛ࡣኟᮇࢆ୰ᚰ࡟㈋㓟⣲ỈሢࡀⓎ⏕ࡍࡿࡀࠊࡑࡢཎᅉ࡜ࡋ࡚⪃࠼ࡽࢀࡿὼ ❑ᆅ࡜㈋㓟⣲Ỉሢ࡜ࡢ┦㛵㛵ಀࡣᮍࡔ࡟᫂ࡽ࠿࡟࡞ࡗ࡚࠸࡞࠸ࠋࡑࡇ࡛ࠊᙜ◊✲ᐊ࡛ࡣࠊ㐣ཤ࡟Ⓨ⏕ࡋࡓ㈋㓟⣲Ỉሢࡢᣲືࡀ┤ୗ࡟Ꮡᅾࡍࡿᗏ㉁࡟ಖᏑࡉࢀࡿࡇ࡜࡟╔┠ࡋࠊ
ᗏ㉁୰ࡢඖ⣲⃰ᗘࡸ໬Ꮫ≧ែ࠿ࡽ㓟໬㑏ඖ≧ែࡢホ౯ࢆ⾜࠺ࡇ࡜ࢆヨࡳࡓࠋࡇࡢᗘࠊᮾி‴ὼ ❑ᆅ࠿ࡽ᥇ྲྀࡋࡓᗏ㉁ࢥ࢔ࢆ㖄┤ ሁ✚ ᪉ྥ࡟⿢᩿ࡋࠊᶵჾ୰ᛶᏊᨺᑕ໬ศᯒ(INAA)ἲ
࡟ࡼࡾ㓟໬㑏ඖ≧ែ࡟ᩄឤ࡞ඖ⣲࡛࠶ࡿ Fe, Mn, U, Th, Ce ࡢᐃ㔞ࢆ⾜࠸ࠊ࣓ࢫࣂ࢘࢔࣮ศග
ἲ࡟ࡼࡿ Fe ࡢ≧ែศᯒࢆ⾜ࡗࡓࡢ࡛ሗ࿌ࡍࡿࠋ
䛆ヨᩱ᥇ྲྀ䞉ᐇ㦂䛇ᗏ㉁ヨᩱ᥇ྲྀࡣ 2011 ᖺ 8 ᭶(㈋㓟⣲ỈሢⓎ⏕ᮇ)࡟ࠊᖥᙇἈὼ ❑ᆅෆ࠾ࡼࡧ
ẚ㍑ᑐ↷Ⅼࡓࡿᖹሙ࡟࠾࠸࡚⾜ࡗࡓࠋ᥇ྲྀࡋࡓᗏ㉁ࢥ࢔ࡣࠊᚑ᮶ࡼࡾࡶ㧗࠸᫬㛫ศゎ⬟࡛ࡢゎᯒࢆ⾜࠺ࡓࡵࠊ0.6 cm ࡈ࡜࡟⣽ศ໬ࡋࡓࠋࡇࢀࡽࡢヨᩱ࡟ࡘࡁࠊி㒔኱ᏛཎᏊ⅔ᐇ㦂ᡤ◊✲⏝ཎᏊ⅔࡛ INAA ἲ࡟ࡼࡿඖ⣲⃰ᗘࡢศᯒࢆ⾜ࡗࡓࠋ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡢ ᐃࡣࠊ
1.1 GBq ࡢ 57Co/Rh ⥺※ࢆ⏝࠸ࠊVelocity=s10.0 mm/s ࡛⾜ࡗࡓࠋᗏ㉁୰࡟ maghemite(ɤ-Fe2O3)
࠾ࡼࡧ pyrite(FeS2)ࡀᏑᅾࡍࡿሙྜࡣࠊࡑࡢࣆ࣮ࢡ఩⨨ࢆᅛᐃࡋ࡚ゎᯒࢆ⾜ࡗࡓࠋ䛆⤖ᯝ䛸⪃ᐹ䛇ᗏ㉁ࢥ࢔ࡢ 57Fe ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࢆゎᯒࡋࡓ࡜ࡇࢁࠊὼ ❑ᆅ࠾ࡼࡧᖹ
ሙࡢ඲࡚ࡢᒙ࡟࠾࠸࡚ࠊ⢓ᅵ㖔≀⏤᮶ࡢ Fe3+ࠊ⌛㓟ሷ⏤᮶ࡢ Fe2+ࠊ࠾ࡼࡧ㓟໬ⓗ⎔ቃୗ࡛⏕ᡂࡍࡿ maghemite ࡀほ ࡉࢀࡓࠋࡲࡓࠊᖹሙࡢ᭱⾲ᒙࢆ㝖ࡃ඲࡚ࡢᒙࠊ࠾ࡼࡧὼ ❑ᆅࡢ୰࣭ୗᒙ㒊࡟࠾࠸࡚ࠊ㑏ඖⓗ⎔ቃୗ࡛⏕ᡂࡍࡿ pyrite ࡀほ ࡉࢀࡓࠋpyrite ࡢ๭ྜࡣࠊᖹሙࡢ᪉ࡀὼ ❑ᆅࡼࡾ㧗ࡃࠊᖹሙࡣὼ ❑ᆅࡼࡾ㑏ඖⓗ࡛࠶ࡗࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋINAA ἲ࡟ࡼࡾࠊU, Th, Ce ࡢ⃰ᗘࢆồࡵࠊTh/U, Ce/Uẚࢆ⟬ฟࡋࡓ࡜ࡇࢁࠊὼ ❑ᆅ࣭ᖹሙ࡜ࡶ⾲ᒙ࡛ࡇࢀࡽ
ࡢẚࡀ኱ࡁࡃ࡞ࡾࠊᖹሙࡢ᪉ࡀὼ ❑ᆅࡼࡾẚࡀᑠࡉࡃ࡞ࡿഴྥࡀぢࡽࢀࡓࠋTh, Ce ࡣ㓟໬ⓗ࡛࠶ࡿ࡯࡝ࠊU ࡣ㑏ඖⓗ࡛࠶ࡿ࡯࡝ỿẊࢆ⏕ࡌࡿࡢ࡛ࠊ⾲ᒙࡣ୰࣭ୗᒙ࡟
ẚ࡭࡚㓟໬ⓗ࡛࠶ࡾࠊᖹሙࡣὼ ❑ᆅࡼࡾࡶ㑏ඖⓗ࡛࠶ࡗࡓࡇ࡜ࡀ♧၀ࡉࢀࡓࡀࠊࡇࢀࡣ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺ
ࣝ࡟࠾ࡅࡿ pyrite ࡢ๭ྜ࡟㛵ࡍࡿ⤖ᯝ࡜ᩚྜⓗ࡛࠶ࡿࠋ ࡼࡗ࡚ࠊὼ ❑ᆅ୰࣭ୗᒙ㒊࠾ࡼࡧᖹሙࡣࠊpyrite ࡀ⏕ᡂࡋ U ࡶỿẊࡍࡿ⛬ᗘ㑏ඖⓗ࡛࠶ࡗࡓ࡜⪃࠼ࡽࢀࡿࠋ
ࡲࡓࠊὼ ❑ᆅࡢ⾲ᒙ࡛ Fe, Mn ࡢ⃰ᗘࡀᑠࡉࡃ࡞ࡗ
ࡓࡀࠊ୧ඖ⣲ࡣ㓟໬ⓗ⎔ቃୗ࡛ỿẊࡍࡿࡓࡵࠊ⾲ᒙ࡟ࡣ㑏ඖⓗ࡞ᾏỈࡀᾐ㏱ࡋࠊ୧ඖ⣲ࡀ⁐⬺ࡋࡓࡶࡢ࡜⪃࠼ࡽࢀࡿࠋࡇࡢࡇ࡜࠿ࡽࠊὼ ❑ᆅࡢ⾲ᒙࡣࠊFe ࡀ⁐⬺ࡍ
ᅗ㸬ᮾி‴ᖥᙇἈὼ ❑ᆅࡢᗏ㉁ࡢ
57
ࡿ⛬ᗘ࡟ࡣ㑏ඖⓗࡔࡗࡓࡀࠊU ࡀỿẊࡋࡓࡾ pyrite ࡀ⏕
Fe ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝ
㸦ୖ㸸3.5 - 4.1 cmࠊୗ㸸20.0 - 20.8 cm㸧
ᡂࡋࡓࡾࡍࡿ࡯࡝㑏ඖⓗ࡛ࡣ࡞࠿ࡗࡓ࡜⪃࠼ࡽࢀࡿࠋ

Evaluation of Redox Conditions at Dredged Trenches in Tokyo Bay by Mössbauer
Spectroscopy and Neutron Activation Analysis.
YAMAGATA, T., SHOZUGAWA, K., OKUMURA, R., TAKAMIYA, K., MATSUO, M.

- 46 -

1B02

1,2-ࣅࢫ(4-ࣆࣜࢪࣝ)࢚ࢱ࡛ࣥᯫᶫࡋࡓ㞟✚ᆺ㕲㘒యࡢ࢔ࢽ࢜ࣥΰᬗ࡟
ࡼࡿࢫࣆࣥኚ໬
(ᗈ኱㝔⌮ 1䚸ᗈ኱ N-BARD2)○ᅵᡭ㻌 㐶 1䚸୰ᓥ㻌 ぬ 2

Q.S. / mm s-1䛆⥴ゝ䛇 㞟✚ᆺ㘒యࡢ࢔ࢽ࢜ࣥΰᬗࡣ㓄఩Ꮚሙࢆᚤጁ࡟ไᚚ࡛ࡁࡿྍ⬟ᛶࡀ࠶ࡾ⯆࿡῝࠸ࠋࡇࢀࡲ࡛ 1,3-ࣅࢫ(4-ࣆࣜࢪࣝ)ࣉࣟࣃࣥ(bpp)࡛ᯫᶫࡋࡓ࢔ࢽ࢜ࣥΰᬗࡢ㞟✚ᆺ㕲㘒యࢆྜᡂࡋࡓ 1)ࠋඖ⣲ศᯒࡼࡾྜᡂ࡛ຍ࠼ࡓ NCS ࡜ NCBH3 ࡢ๭ྜࡼࡾ NCS ࡀከࡃ࡞ࡿഴྥࡀ࠶ࡿࡇ
࡜ࠊ⢊ᮎ X ⥺ᅇᢡ ᐃࡼࡾ NCS ࡀቑຍࡍࡿ࡜(0 0 2)㠃ࡢᅇᢡࡀ㧗ゅᗘഃ࡟ࢩࣇࢺࡍࡿࡇ࡜ࡀ
ศ࠿ࡗࡓ 1)ࠋ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡣࠊ⣧⢋࡞ NCS 㘒య࡜ NCBH3 㘒యࡢࢫ࣌ࢡࢺࣝࡢ㔜ࡡྜࢃࡏ࡟㏆ࡃࠊపࢫࣆࣥ✀ࡢ๭ྜ࡟ΰᬗࡢຠᯝࡀぢࡽࢀࡓࠋᮏ◊✲࡛ࡣ 1,2-ࣅࢫ(4-ࣆࣜࢪࣝ)࢚ࢱࣥ(bpa)࡛ྠᵝࡢ࢔ࢽ࢜ࣥΰᬗᐇ㦂ࢆ⾜ࡗࡓࠋ⣧⢋࡞ bpa 㘒య࡛ࡣࢤࢫࢺࢆໟ᥋ࡉࡏࡿࡇ࡜࡟
ࡼࡾࢫࣆࣥࢡࣟࢫ࣮࢜ࣂ࣮ࡀ☜ㄆࡉࢀ࡚࠸ࡿࡢ࡛ࠊໟ᥋య࡟ࡘ࠸࡚ࡶ࢔ࢽ࢜ࣥΰᬗᐇ㦂ࢆ⾜ࡗࡓࠋ䛆ᐇ㦂䛇 ྜᡂࡣ┤᥋ΰྜἲ࡛⾜ࡗࡓࠋࡍ࡞ࢃࡕࠊ୍᪉ࡢࣅ࣮࣮࢝࡟◲㓟㕲(2mmol)ࠊ࢔ࢽ࢜ࣥ
(2mmol, ⥲㔞)ࠊ࢔ࢫࢥࣝࣅࣥ㓟(㐺㔞)ࢆỈ 10ml ࡟⁐࠿ࡋࠊࡶ࠺୍᪉ࡢࣅ࣮࣮࢝࡟ bpa(2mmol)ࢆỈ 20ml ࡟⁐࠿ࡋࡓࡶࡢࢆ‽ഛࡍࡿࠋࡇࡢ⁐ᾮࢆ୍ࡘ࡟ࡋ࡚ᙉࡃ᧠ᢾࡍࡿࠋ30 ศ⛬ᗘ᧠ᢾࡋࡓࡢࡕࠊ┠ⓗ≀ࢆ྾ᘬℐ㐣ࡍࡿࠋỈࠊ࢚ࢱࣀ࣮࡛ࣝ㍍ࡃὙ࠸ࠊ┿✵஝⇱ࡉࡏࡿࠋຍ࠼ࡿ࢔
ࢽ࢜ࣥࡣ 0.2mmol ้ࡳ࡛ኚ࠼ࡓࠋໟ᥋యࢆྜᡂࡍࡿ㝿ࡣ bpa ࢆຍ࠼ࡓࣅ࣮࣮࢝࡟ p-ࢪࢡࣟࣟ࣋ࣥࢮࣥ(2mmol)ࢆຍ࠼ࠊࡇࡢࣅ࣮࣮࢝ෆࡢ⁐ᾮࡔࡅࢆ࢚ࢱࣀ࣮ࣝ 20ml ࡟ኚ᭦ࡋࡓࠋNCS ࡜
NCBH3 ࡢ๭ྜࡣඖ⣲ศᯒࢆ⏝࠸࡚Ỵᐃࡋࠊᵓ㐀ࡣ⢊ᮎ X ⥺ᅇᢡ࡛᥎ᐃࡋࠊ࣓ࢫࣂ࢘࢔࣮ศග
ἲ࡛㕲ࡢࢫࣆࣥ≧ែࢆㄪ࡭ࡓࠋ
䛆⤖ᯝ䛇ඖ⣲ศᯒ࡛ࡣ bpp 㘒యྠᵝࠊྜᡂ᫬࡟౑⏝ࡋࡓ NCS ࡜ NCBH3 ࡢ๭ྜࡼࡾ NCS ࡀከࡃ࡞ࡿഴྥࡀぢࡽࢀࡓࠋࡲࡓ⢊ᮎ X ⥺ᅇᢡ࡛ࡣ(2 0 -2)࡜(1 1 -2)ࡢᅇᢡ࡛ NCS ࡀቑຍࡍࡿ࡟ࡘࢀ࡚㧗ゅᗘഃ࡟ࢩࣇࢺࡍࡿഴྥ࡟࠶ࡗࡓࠋ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺ࡛ࣝࡣࠊΰᬗ࡟ࡍࡿࡇ࡜࡟ࡼࡾ࢔ࢽ࢜ࣥࡀ
ከ࠸✀ࡢࢲࣈࣞࢵࢺ࡟ຍ࠼࡚᪂ࡓ࡟ᅄᴟศ⿣್ࡢᑠࡉ࡞ࢲࣈࣞࢵࢺࡢ 2 ✀㢮ࡀほ ࡉࢀࡓࠋ␗ᛶ
యࢩࣇࢺ್ࡼࡾࡍ࡭࡚㧗ࢫࣆࣥ≧ែ࡛࠶ࡿ࡜᥎ᐃࡉࢀࡓࠋᅄᴟศ⿣್ࢆᅗ㸯࡟ࡲ࡜ࡵࡓࠋእഃࡢ
ࢲࣈࣞࢵࢺࡢᅄᴟศ⿣್ࡣ࢔ࢽ࢜ࣥࡢ๭ྜࡢኚ໬࡟ࡼࡾᙳ㡪ࢆཷࡅࡿࠋᑠࡉ࡞ࢲࣈࣞࢵࢺࡣࠊ㠃✚ᙉᗘࡀࠊ࢔ࢽ࢜ࣥẚࡀ㸯㸸㸯௜㏆࡛᭱኱࡟࡞ࡿࡇ࡜࠿ࡽ࢔ࢽ࢜ࣥࡀ୍ࡘࡎࡘ㓄఩ࡋࡓ㘒యࡢྍ⬟ᛶࡀ࠶ࡿࡀࠊᅄᴟศ⿣್ࡀᑠࡉࡃ࡞ࡿ⌮2.2⏤ࡣࢃ࠿ࡽ࡞࠸ࠋࡲࡓࠊbpp 㘒య࡛ࡣ࢔ࢽ
2
1.8࢜ࣥࡀ୍ࡘࡎࡘ㓄఩ࡋࡓ㘒యࡣᚓࡽࢀ࡞
1.6࠿ࡗࡓࡀࠊࡑࢀ࡜ࡢ㐪࠸ࡣ᳨ウ୰࡛࠶ࡿࠋ
1.4
1.2
ࡲࡓࠊp-ࢪࢡࣟࣟ࣋ࣥࢮࣥࢆໟ᥋ࡉࡏࡿࡇ
1࡜࡟ࡼࡾࢫࣆࣥࢡࣟࢫ࣮࢜ࣂ࣮ᣲືࡀぢࡽ
0.8
0.6ࢀࡓࠋ⣧⢋࡞ NCS ໟ᥋㘒య࡛ࡣࢃࡎ࠿࡟ప
0.4
ࢫࣆࣥ✀ࡀほ ࡉࢀࡿࡢࡳ࡛࠶ࡿࠋ୍᪉
0.2
0NCBH3 㘒య࡛ࡣ p-ࢪࢡࣟࣟ࣋ࣥࢮࣥࢆໟ᥋
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
Fraction of NCS
ࡋ࡞࠸ࠋ௒ᅇࠊ࢔ࢽ࢜ࣥΰᬗ࡟ࡍࡿࡇ࡜࡟
ࡼࡾపࢫࣆࣥ✀ࡢቑຍࡀㄆࡵࡽࢀࡓࡢࡣࠊ
ᅗ 1. 㠀ໟ᥋యࡢ NCS ࡢ㔞ᑐ Q.S.್ࡢࣉࣟࢵࢺ
NCBH3 㘒య㒊ศࡶ p-ࢪࢡࣟࣟ࣋ࣥࢮࣥࢆໟ
᥋ࡋࡓࡓࡵ࡛࠶ࡿྍ⬟ᛶࡀ࠶ࡿࠋ
1) H. Dote et al., J. Radioanal. Nucl. Chem., accepted (2014).
Difference of spin state in anion-mixed assembled crystals bridged by 1,2-bis(4-pyridyl)ethane
DOTE, H.,NAKASIMA, S..

- 47 -

1B03

ΰྜཎᏊ౯࣌ࣥࢱࣇࣝ࢜ࣟᏳᜥ㤶㓟㕲୕᰾㘒యࡢ㸰ࡘከᙧࡢྜᡂ࡜࣓ࢫ
ࣂ࢘࢔࣮ศගἲ࡟ࡼࡿཎᏊ౯ࢺࣛࢵࣉࢹࢺࣛࢵࣉࡢほ 㸦኱ྠ኱Ꮫ 1࣭ᮾࣞࣜࢧ࣮ࢳࢭࣥࢱ࣮2࣭ᮾ㑥኱Ꮫ 3࣭᪥ᮏ኱Ꮫ㸦ᩥ⌮㸧4࣭ᮾிᕤᴗ኱Ꮫ 5㸧‫ۑ‬ᑠᮌ᭮ ஢ 1ࠊ㓇஭㝧୍ 1ࠊᑿ୰ ド 1ࠊ୰ᮏᛅᏹ 2,1ࠊ㧗ᶫ ṇ 3ࠊ㧗ᒣ ດ 1ࠊᑿ㛵ᬛ஧ 4ࠊᑠᯘ㞝௓ 5࠙ࡣࡌࡵ࡟ࠚ ΰྜཎᏊ౯୕᰾࢝ࣝ࣎ࣥ㓟㕲㘒యࠊFeϪ㸰FeϩO(RCOO)6L3 ࡣࠊ࡯ࡰྠࡌ⎔ቃNEW typeୗ࡟࠶ࡿ㸱ࡘࡢ㕲࢖࢜ࣥࢆࡶࡘࠋᡃࠎࡣࡇࢀ

Fe

2+

300 K
270 K

3+

Fe

ࡲ࡛ࢪࢡ࣓ࣟࣟࢱࣥࢆ⤖ᬗ⁐፹࡜ࡋ࡚ࡶࡘΰ

240 KྜཎᏊ౯࣌ࣥࢱࣇࣝ࢜ࣟᏳᜥ㤶㓟㕲୕᰾㘒య

200 K

Fe3O(C6F5CO)6(C5H5N)3CH2Cl2 ࢆྜᡂࡋࠊప
㸦.㸧࡛ࡣཎᏊ౯ࢹࢺࣛࢵࣉ㸦ᖹᆒ໬㸧࡜࡞ࡿࡇ࡜ࢆ
57

160 K

Relative intensity/ a.u.

㸦.㸧࡛ࡣཎᏊ౯ࢺࣛࢵࣉࠊ㧗

120 K

Fe ࣓ࢫࣂ࢘࢔࣮ศගἲ࡟ࡼࡾ᫂ࡽ࠿࡟ࡋࡓࠋ

ࡲࡓ༢⤖ᬗ X ⥺ゎᯒ࡟ࡼࡾࡇࡢ⤖ᬗࡣභ᪉ᬗ
⣔࡛࠶ࡿࡇ࡜ࢆ☜࠿ࡵࡓ   ࠋ
᭱㏆ࠊྜᡂࡢ᭱⤊ẁ㝵ࡢ⤖ᬗ໬ࡢ᪉ἲࢆኚ࠼

78 K

hexagonalFe3+ࡿࡇ࡜࡟ࡼࡗ࡚ࠊᬗ⣔ࡀ␗࡞ࡿ⤖ᬗࡀᚓࡽࢀ

Fe

2+

300 K

Fe

2.7+

ࡿࡇ࡜ࢆぢฟࡋࠊࡇࢀࡣ᪤ሗࡢ⤖ᬗ࡜ࡣ඲ࡃ

5K

␗࡞ࡿཎᏊ౯ࢺࣛࢵࣉࢹࢺࣛࢵࣉ⌧㇟ࢆ♧
3+Feࡍࡶࡢࢆぢฟࡋࡓࡢ࡛ሗ࿌ࡍࡿࠋ
࠙ᐇ㦂ࠚFe3+2Fe2+O(C6F5COO)6(C5H5N)3CH2Cl2

78 K

-5

Fe

2+

0
Doppler velocity/mm/s

5ࡢྜᡂࡣࡇࢀࡲ࡛ࡢ᪉ἲ࡛⾜ࡗࡓࠋ᪂ࡋ࠸ᆺᅗ 㸬 ᪂ ᆺ ࡜ භ ᪉ ᬗ ⣔ ࡢࡢ㘒యࡀୖグࡢ⤌ᡂ࡛࠶ࡿࡇ࡜ࡣඖ⣲ศᯒࡸ IR

Fe3+2Fe2+O(C6F5COO)6(C5H5N)3·CH2Cl2

࠿ࡽ☜ㄆࡋࡓࠋ57Fe-࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡣࡇ
ࢀࡲ࡛ྠᵝࠊ㏱㐣ἲ࡟ࡼࡾࡢ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡢ

ᐃࡋࡓࠋ

Ꮡᛶ
࠙⤖ᯝ࡜⪃ᐹࠚ ᅗ࡟᪂ᆺ㘒యࡢ࣓ࢫࣂ࢘࢔࣮ࢫ࣌ࢡࢺࣝࡢ

ᗘ౫

ᗘኚ໬ࢆ

ᗘ౫Ꮡᛶ㸦㹼.㸧ࢆ♧ࡍࠋẚ㍑ࡢࡓࡵ࡟ࠊࡇࢀࡲ࡛ࡢභ᪉ᬗ⣔ࡢࢫ࣌ࢡࢺࣝ㸦.㸧ࡶ♧ࡍࠋᅗ࠿ࡽศ࠿ࡿࡼ࠺࡟
᪂ᆺ㘒య࡟࠾࠸࡚ࡣ㧗ᮎ XRD

㸦.㸧࡛ࡶཎᏊ౯ࢺࣛࢵࣉ࡛࠶ࡿࡇ࡜ࡀ♧ࡉࢀࡓࠋ᪂ᆺ㘒యࡢ⢊ᐃࡢ⤖ᯝࠊභ᪉ᬗ⣔ࡢࡇࢀࡲ࡛ࡢࡶࡢ࡜ࡣ␗࡞ࡿࣃࢱ࣮ࣥࢆ♧ࡋࡓࠋࡇࡢከᙧࡣᩳ

᪉ᬗ⣔࡛࠶ࡿ࡜ᛮࢃࢀࡿࡀࠊ⌧ᅾ᳨ウ୰࡛࠶ࡿࠋヲ⣽࡞ᐃ⤖ᯝࠊྜᡂἲࡸ࣓ࢫࣂ࢘࢔࣮ᣲ

ື࡟ࡘ࠸࡚ࡣᙜ᪥ሗ࿌ࡍࡿணᐃ࡛࠶ࡿࠋ
1)

Y. Sakai, et al. Hyp.

Int., 205 (2012) 1

2)

S. Onaka et al. Dalton Trans.,  43

(2014) 6711

Synthesis and Mössbauer Spectroscopic Observation of Valence-trapping and Detrapping of two
Polymorphs of Mixed-valence Trinuclear Iron Pentafluorobenzoate Complex.
1
OGISO, R.,
R1;SAKAI,
SAKAI,Y.,YONAKA,; ONAKA,
S1; NAKAMOTO,
T2; TAKAHASHI,
M3; TAKAYAMA,
T 1;
OGISO,
S., NAKAMOTO,
T., TAKAHASHI,
M., TAKAYAMA,T.,
4
5
OZEKI, T.,
T ; KOBAYASHI,
KOBAYASHI, YOZEKI,Y.,;- 48 -

1B04

୙⣧≀ $O ࡜ ,Q ࢆࢻ࣮ࣉࡋࡓ =Q2 ୰ࡢ㓟⣲✵Ꮝᙧᡂ࢚ࢿࣝࢠ࣮ࡢỴᐃ㔠኱㝔⮬↛ ࠊ㔠኱⌮ᕤ ࠊி኱ཎᏊ⅔  ‫ۑ‬ᑠᯇ⏣Ἃஓຍ ࠊబ⸨ ΅ ࠊ኱ஂಖ჆㧗 ࠙ࡣࡌࡵ࡟ࠚ㓟໬ள㖄(ZnO)ࡣ༙ᑟయ࡜ࡋ࡚ࡢ฼⏝ࡀὀ┠ࡉࢀ࡚࠾ࡾࠊ㏆ᖺ࡛ࡣඹࢻ࣮ࣉࡉࢀ
ࡓ 13 ᪘ඖ⣲ࡸ☢ᛶ㔠ᒓࡀᙧᡂࡍࡿᒁᡤᵓ㐀࡜ࡑࡢไᚚ࡟㛵ࡍࡿ◊✲ࡀ㐍ࡵࡽࢀ࡚࠸ࡿࠋᡃࠎ
ࡣࠊ111In(Ѝ111Cd)ࢆࣉ࣮ࣟࣈ࡜ࡍࡿȚ⥺ᦤືゅ┦㛵(PAC)ἲ࡟ࡼࡾࠊZnO ୰࡟ඹࢻ࣮ࣉࡉࢀࡓ
୙⣧≀ Al ࡜ In ࡀᙧᡂࡍࡿᒁᡤᵓ㐀ࢆㄪ࡭࡚࠸ࡿ[1,2]ࠋᡃࠎࡢࡇࢀࡲ࡛ࡢ◊✲࡟࠾࠸࡚ࠊZnO
୰࡟ᑟධࡉࢀࡓ 100 ppm ࡢ Al ࡜ 100 ppt ࡢ 111In(Ѝ111Cd)ࡀ࡝ࡕࡽࡶ㠀ᖖ࡟ᕼⷧ࡞⃰ᗘ࡟ࡶ㛵ࢃࡽࡎ✵Ẽ୰࡛ࡢ⇕ฎ⌮࡟ࡼࡾᒁᡤⓗ࡟จ㞟ࡋ࡚ᙉࡃ఍ྜࡍࡿ⌧㇟ࡀぢฟࡉࢀࡓࠋ୍᪉࡛ࠊ
఍ྜ≧ែࡀᙧᡂࡉࢀࡓヨᩱࢆ┿✵୰࡛⇕ฎ⌮ࡍࡿࡇ࡜࡟ࡼࡾ 111In ࡀ Al ࠿ࡽゎ㞳ࡋ࡚Ḟ㝗ࡢ↓࠸ Zn ࡢ⨨᥮ࢧ࢖ࢺ࡬⛣ࡿ࡜࠸࠺ࠊ༨᭷ࢧ࢖ࢺࡢ⇕ฎ⌮᮲௳౫Ꮡᛶࢆほ ࡋࡓ[2]ࠋ༶ࡕࡇ
ࡢゎ㞳཯ᛂ࡟ࡣ㓟⣲⃰ᗘࡀ㛵୚ࡋ࡚࠸ࡿྍ⬟ᛶࢆ♧၀ࡋ࡚࠸ࡿࠋᮏ◊✲࡛ࡣࠊ┿✵୰࡛➼ ➼᫬࢔ࢽ࣮ࣜࣥࢢࢆ᪋ࡋࡓ 100 ppm Al-doped ZnO ࢆㄪ〇ࡋࠊ111In(Ѝ111Cd)ࣉ࣮ࣟࣈࢆ⏝࠸ࡓ
PAC ᐃࢆ⾜ࡗࡓࠋࢫ࣌ࢡࢺࣝࢆゎᯒࡋ࡚ Al ࡜ In ࡢゎ㞳ࡢᶵᵓ࡟ࡘ࠸࡚ㄪ࡭ࡓ⤖ᯝࠊࡇࡢゎ㞳཯ᛂࡀ ZnO ࡢ㓟⣲✵Ꮝࡢᙧᡂ࡟ㄏ㉳ࡉࢀࡓ⌧㇟࡛࠶ࡿࡇ࡜ࢆࡘࡁ࡜ࡵࡓࠋ
࠙ᐇ㦂ࠚAlࡢ⃰ᗘࡀZn࡟ᑐࡋ100 ppm࡜࡞ࡿࡼ࠺࡟ࠊAl(NO3)3࣭9H2Oࢆ⁐ゎࡋࡓ࢚ࢱࣀ࣮ࣝ⁐ᾮ࡜ZnO⢊ᮎࢆΰྜࡋࠊ࢚ࢱࣀ࣮ࣝࡀ᏶඲࡟⵨Ⓨࡍࡿࡲ࡛ຍ⇕࣭᧠ᢾࡋ࡚⢊ᮎヨᩱࢆᚓࡓࠋ
ࡇࡢヨᩱ࠿ࡽ㘄๣ࢆ」ᩘᯛᡂᙧࡋࠊ✵Ẽ୰1273 K࡛3᫬㛫↝ᡂࡋࡓࠋᚓࡽࢀࡓヨᩱ࡟111Inሷ㓟⁐ᾮࢆ⁲ୗࡋࠊ✵Ẽ୰1373 K࡛2᫬㛫↝㕌ࡋࡓࠋᚓࡽࢀࡓヨᩱࡢ୍ࡘࢆᐊ ࡛PAC ᐃࡋࡓᚋࠊ
ṧࡾࡢヨᩱࢆࡉࡽ࡟┿✵୰1123 K࡛1~25᫬㛫↝㕌ࡋࠊࡑࢀࡒࢀᐊ ࡛PAC ᐃࢆ⾜ࡗࡓࠋR(t)࠙⤖ᯝࠚFig. 1(a)ࡣ✵Ẽ୰ 1373 K ࡛↝㕌ࡋ࡚ᚓࡽࢀࡓヨᩱࡢ PAC ࢫ࣌ࢡࢺ࡛ࣝ࠶ࡾࠊ111In ࡀ-0.2
Al ࡜఍ྜࡋ࡚࠸ࡿࡇ࡜ࢆ♧၀ࡋ࡚࠸ࡿࠋFig. 1(b)ࠊ1(c)ࡣ
-0.15
(a)
✵Ẽ୰࡛ࡢ⇕ฎ⌮ᚋࠊࡉࡽ࡟┿✵୰ 1123 K ࡛ࡑࢀࡒࢀ 100-0.1
ศࠊ25 ᫬㛫↝㕌ࡋ࡚ᚓࡽࢀࡓヨᩱࡢ PAC ࢫ࣌ࢡࢺ࡛ࣝ࠶
-0.05
ࡿࠋFig. 1(b)࡛ࡣ Fig. 1(a)࡟ぢࡽࢀࡿᡂศࡢ௚࡟ࠊ111In(Ѝ0111Cd)ࡀ ZnO ࡢ Zn ࢧ࢖ࢺࢆ༢⊂࡛⨨᥮ࡋ࡚࠸ࡿ㝿࡟ほ
0.05
-0.15
ࡉࢀࡿᡂศ(t = 200 ns ࿘㎶ࡢࣆ࣮ࢡ)ࡀ᪂ࡓ࡟ほ ࡉࢀࠊFig.
(b)-0.1
1(c)࡛ࡣࡑࡢᡂศࡀࡼࡾ㢧ⴭ࡟⌧ࢀࡓࠋࡇࢀࡣᕼⷧ㓟⣲⃰-0.05
ᗘ࡛ࡢ↝㕌࡟ࡼࡾ In ࡀ Al ࠿ࡽゎ㞳ࡍࡿࡇ࡜ࠊࡲࡓࡑࡢゎ0㞳ࡀ↝㕌᫬㛫࡟౫Ꮡࡍࡿࡇ࡜ࢆ⾲ࡋ࡚࠸ࡿࠋ୍⯡࡟㔠ᒓ㓟
0.05
໬≀࡛ࡣᕼⷧ㓟⣲⃰ᗘ࡛ࡢ↝㕌࡟ࡼࡾ㓟⣲✵Ꮝࡀ⏕ࡌࡿ
-0.15
(c)
ࡇ࡜ࡀศࡗ࡚࠸ࡿࠋᚑࡗ࡚ࡇࡢゎ㞳ࡢ㐣⛬ࡣ㓟⣲✵Ꮝᙧᡂ
-0.1
-0.05
࡟కࡗ࡚⏕ࡌࡿྍ⬟ᛶࡀ⪃࠼ࡽࢀࡿࠋᮏⓎ⾲࡛ࡣゎ㞳ࡢ↝0㕌᫬㛫౫Ꮡᛶࡸ↝㕌 ᗘ౫Ꮡᛶ࡟ࡘ࠸࡚ㄪ࡭ࡓ⤖ᯝࢆ♧
0.05
0
50
100 150 200 250 300ࡋࠊゎ㞳ࡢ㏿ᗘᐃᩘࡸࡇࢀࡽࡢ್ࢆᇶ࡟ࡋ࡚ồࡵࡓάᛶ໬
Time (ns)࢚ࢿࣝࢠ࣮࡟ࡘ࠸࡚㆟ㄽࡍࡿࠋFig. 1. (a) PAC spectrum of 111In(Ѝ111Cd) in[1] S. Komatsuda, W. Sato, S. Kawata, and Y. Ohkubo: J. Phys. Soc.
Jpn., 80 (2011) 095001.
[2] S. Komatsuda, W. Sato, and Y. Ohkubo: J. Radioanal. Nucl. Chem.,in press.

100 ppm Al-doped ZnO annealed in air at
1373 K. PAC spectra of 111Cd(Ћ 111In) in
100 ppm Al-doped ZnO annealed in vacuumat 1123 K (b) for 100 min and (c) for 25 hafter the measurement of the spectrum (a).

Determination of formation energy of oxygen vacancies in zinc oxide doped with Al and In impurities
KOMATSUDA, S.,SATO, W., OHKUBO, Y.

- 49 -

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[2] W. Sato et al. Chem. Phys. Lett. 609, 104 (2014).

Fig. 1. TDPAC spectra of 111Ag( 111Cd)
in PVP-AgI measured at the temperaturesindicated.

Dynamics of 111Ag in a superionic conductor AgI

SATO, W., MIZUUCHI, R., IRIOKA, N., KOMATSUDA, S., KAWATA, S., TAOKA, A., OHKUBO, Y.
- 50 -

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Medical Radioisotope Production with Accelerator Neutrons by 40 MeV Deuterons
TSUKADA, K., SATO, N., WATANABE, S., ISHIOKA, N. S., HATSUKAWA. Y.
HASHIMOTO, K., KIN, T., KAWABATA, M., SAEKI, H., NAGAI, Y.

- 51 -2) Y. Nagai et al., J. Phys. Soc. Jpn. 82 (2013) 064201.
3) N. Sato et al., J. Phys. Soc. Jpn. 83 (2014) 073201.




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Cross section (mb)䛆⥴ゝ䛇ෆ⏝ᨺᑕ⥺἞⒪࡬ࡢᛂ⏝ࡀᮇᚅࡉࢀ࡚࠸ࡿȘᨺᑕᛶྠ఩య 211At ࡣࠊ୍⯡࡟ࠊຍ㏿ჾࢆ⏝࠸࡚᰾཯ᛂ 209Bi(4He,2n)211At[1]࡛ྜᡂࡉࢀࡿࡀࠊᡃࠎࡣ 209Bi(7Li,5n)211Rn ཯ᛂࢆ฼⏝ࡋࡓ
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Rn/211At ࢪ࢙ࢿ࣮ࣞࢱ࡛౪⤥ࡍࡿ᪂ࡋ࠸ࢩࢫࢸ࣒ࡢ㛤Ⓨࣉࣟࢪ࢙ࢡࢺࢆ㐍ࡵ࡚࠸ࡿࠋࡇࡢ㛤Ⓨࣉࣟࢪ࢙ࢡࢺ࡟ᚲせ࡞࢔ࢫࢱࢳࣥࠊࣚ࢘⣲ RI ࢆྜᡂࡍࡿࡓࡵࠊ7Li ࢖࢜ࣥࣅ࣮࣒ࢆ⏝࠸ࡓ
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Bi(7Li,xn)216-xRnࠊnatPb(7Li,xn)nat-xAtࠊnatSn(7Li,xn)nat-xI ཯ᛂࡢ᰾཯ᛂ᩿㠃✚ࢆ ᐃࡋࠊᇶ♏ᇶ┙࡜࡞ࡿ᰾ࢹ࣮ࢱࢆỴᐃࡋࡓࠋࡉࡽ࡟ࠊࡇࢀࡽࡢ཯ᛂ࡛ྜᡂࡋࡓ࢔ࢫࢱࢳࣥࠊࣚ࢘⣲ RI ࡢศ㞳࣭⢭〇᪉ἲࢆ㛤Ⓨࡋࡓࠋᮏㅮ₇࡛ࡣࠊ࢔ࢫࢱࢳࣥࠊࣚ࢘⣲㹐㹇ࡢ〇㐀࡟㛵ࡍࡿ◊✲ᡂᯝࢆ୰ᚰ࡟ሗ࿌ࡍࡿࠋ
䛆ᐇ㦂䛇ཎᏊຊᶵᵓࢱࣥࢹ࣒ຍ㏿ჾ࡟࠾࠸࡚ 50ࠊ60 MeV ࡢ 7Li3+ࣅ࣮࣒ࢆ 209BiࠊnatPbࠊnatSn 㔠ᒓⷧ⭷ᶆⓗ࡟↷ᑕࡋ࡚ࠊRnࠊAtࠊI ྠ఩యࢆ〇㐀ࡋࡓࠋບ㉳㛵ᩘࢆồࡵࡿࡓࡵ㔠ᒓⷧ⭷ࢆ࢔࣑ࣝ⟩࡛そ࠸ࠊ3㸫5 ⤌㔜ࡡ࡚↷ᑕࡋࡓࠋࡑࢀࡒࢀࡢ↷ᑕヨᩱ୰࡟⏕ᡂࡋࡓᨺᑕᛶྠ఩యࡢᨺ
ᑕ⬟ࢆȚ⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮࡛ࣜồࡵࡓࠋȘᨺᑕᛶྠ఩య 211At ࡢᨺᑕ⬟ࡣࠊAt ࢺ࣮ࣞࢧ࣮⁐ᾮ࠿ࡽȘ⥺※ࢆసᡂࡋ[2]ࠊȘ⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮࡛ࣜồࡵࡓࠋࢺ࣮ࣞࢧ࣮⁐ᾮࡣࠊ㔠ᒓⷧ⭷୰࡟⏕ᡂࡋࡓ AtࠊI ྠ఩యࢆ஝ᘧ⵨␃࡟ᇶ࡙࠸ࡓ໬Ꮫศ㞳࣭⢭〇ἲ࡟ࡼࡾㄪᩚࡋࡓࠋ
䛆⤖ᯝ䞉⪃ᐹ䛇 ᐃࡋࡓᨺᑕ⬟ࠊࢱ࣮ࢤࢵࢺཌࠊࣅ࣮࣒㔞࠿ࡽ཯ᛂ᩿㠃✚ࢆồࡵࡓࠋᅗ࡟
nat
Pb(7Li,xn)nat-xAtࠊnatSn(7Li,xn)nat-xI ཯ᛂࡢບ㉳㛵ᩘࢆ♧ࡍࠋ᭤⥺࡛♧ࡋࡓ⥲ィᶍᆺィ⟬[3]ࡣࠊ
ᐇ㦂್ࢆ࡯ࡰ෌⌧ࡋ࡚࠸ࡿࠋධᑕ࢚ࢿࣝࢠ࣮ࢆไᚚࡍࡿࡇ࡜࡛ࠊ↓ᢸయ At ࠊI ྠ఩యࢆ␗࡞
ࡿᏑᅾẚ࡛〇㐀ࡍࡿࡇ࡜ࡀ࡛ࡁࠊ᰾་Ꮫ◊✲ศ㔝௨እ࡛ࡢࢺ࣮ࣞࢧ࣮฼⏝ࡶᮇᚅ࡛ࡁࡿࠋ
ㅮ₇࡛ࡣࠊᮏ◊✲࡛〇㐀ࠊ⢭〇ࡋࡓ࢔ࢫࢱࢳࣥࠊࣚ࢘⣲ RI ࢆ฼⏝ࡋࡓ◊✲౛ࡶ⤂௓ࡍࡿࠋ

1
20

30

40

50

1000
100
10

‫ۑ‬

1
20

60

126

I
I
123
‫ڦ‬
I
121
‫ڧ‬
I
‫ە‬

30

40

124

50

60

Incident energy (MeV)

Incident energy (MeV)ᅗ㸯 7Li+natPb ཯ᛂ࡛ࡢ At ࡢບ㉳㛵ᩘᅗ㸰 7Li+natSn ཯ᛂ࡛ࡢ I ࡢບ㉳㛵ᩘ䛆ཧ⪃ᩥ⊩䛇[1]M. R. Zalutsky and M. Pruszynski, Current Radiopharmaceuticals 4(2011)177-185.
[2] す ୰ ࡽ ࠊ ➨ 56 ᅇ ᨺ ᑕ ໬ Ꮫ ウ ㄽ ఍ 1B01(2012). [3]K. Nishio et al., Phys. Rev. C
62(2000)014602-1-12 .
Production and utilization of astatine and iodine radioisotopes using 7Li ion beams
NISHINAKA, I., YOKOYAMA, A., WASHIYAMA, K., AMANO, R., MAEDA, E., TANIGUCHI, T.,
MURAKAMI, K., WATANABE, S., SUZUKI, H., ISHIOKA, N. S., HASHIMOTO, K., MAKII, H..

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1B08

natC(d,n)཯ᛂ࡟ࡼࡿ㧗㏿୰ᛶᏊࢆ฼⏝ࡋࡓࡀࢇ἞⒪⏝ 67Cu ࡢ〇㐀ཎᏊຊᶵᵓཎᏊຊ࢚ࢿࣝࢠ࣮ᇶ┙㐃ᦠࢭࣥࢱ࣮ࠊཎᏊຊᶵᵓ㔞Ꮚࣅ࣮࣒ᛂ
⏝◊✲ࢭࣥࢱ࣮ ‫ۑ‬ᶫᮏ࿴ᖾ 1,2ࠊᕝ➃᪉Ꮚ 1ࠊబ఑⚽ஓ 1ࠊሯ⏣࿴᫂ 1ࠊబ⸨ ᮃ 1ࠊᮏ▼❶ྖ 1ࠊỌ஭Ὀᶞ 1ࠊΏ㎶ ᬛ 2ࠊ▼ᒸ඾Ꮚ 2䛆⫼ᬒ䞉┠ⓗ䛇㻌 67Cu㸦༙ῶᮇ 62 ᫬㛫㸧ࡣࠊࡀࢇ἞⒪࡟㐺ࡋࡓ ș ⥺㸦ᖹᆒ࢚ࢿࣝࢠ࣮141 keV㸧࡜⏬ീデ᩿࡟㐺ࡋࡓ Ț ⥺㸦185 keV ➼㸧ࢆྠ᫬࡟ᨺฟࡍࡿࡓࡵࠊࡀࢇ἞⒪⏝᰾✀࡜ࡋ࡚᭷ᮃ
どࡉࢀ࡚࠸ࡿࠋ⌧≧࡛ࡣࠊࡑࡢ〇㐀᪉ἲ࡜ࡋ࡚㧗࢚ࢿࣝࢠ࣮㝧Ꮚ㸦50㹼200 MeV㸧࡟ࡼࡿ
68
Zn(p,2p)67Cu ཯ᛂࡀ᭱㐺࡜⪃࠼ࡽࢀ࡚࠸ࡿࡀࠊ
⏕ᡂ㔞ࡀ㝈ࡽࢀ࡚࠸ࡿࡇ࡜ࡸ๪⏕ᡂ RI
㸦66,67Ga,
64
Cu ➼㸧ࡢከࡉ➼ࡢၥ㢟࠿ࡽࠊ◊✲㛤Ⓨࡶ㝈ᐃⓗ࡞≧ἣ࡛࠶ࡿࠋ ࡑࡇ࡛ࠊᚑ᮶ἲ࡟௦ࢃࡿ〇㐀ἲ࡜ࡋ࡚ࠊnatC(d,n)཯ᛂ࡟ࡼࡿ㧗㏿୰ᛶᏊࢆ⏝࠸࡚ 68Zn(n,x)67Cu ཯ᛂ㸦x=n’p, d㸧࡟ࡼࡾ〇㐀
ࡋࡓ 67Cu ࡢ Zn ࢱ࣮ࢤࢵࢺ࠿ࡽࡢศ㞳࣭⢭〇ཬࡧᢠయᶆ㆑࡟᭷⏝࡞ࣔࢹࣝ㓄఩Ꮚ࡛࠶ࡿ DOTA,TETA ࡬ࡢᶆ㆑ࢆᐇ᪋ࡋࡓࠋ
䛆ᐇ㦂䛇㻌 㧗ᓮ◊ࢧ࢖ࢡࣟࢺࣟࣥࡢ㔜㝧Ꮚࣅ࣮࣒㸦40 MeV, 2 µA㸧ࢆⅣ⣲ᶆⓗ࡟↷ᑕࡋࠊnatC(d,n)཯ᛂ࡟ࡼࡗ࡚Ⓨ⏕ࡍࡿ㧗㏿୰ᛶᏊࢆࡉࡽ࡟ 68ZnO ⃰⦰ࢱ࣮ࢤࢵࢺ㸦ISOFLEX 〇 ⃰⦰ᗘ
99.291%, 638 mg, 1 cm! ࣌ࣞࢵࢺ㸧࡟ 5 ᫬㛫↷ᑕࡋ࡚ 67Cu ࢆ⏕ᡂࡋࡓࠋ↷ᑕ῭ࡳࢱ࣮ࢤࢵࢺ
ࡣᮾᾏཎ⛉◊࡟㒑㏦ࡋࠊኳ↛ ZnO ࢆຍ࠼࡚ 5 g ZnO ┦ᙜ࡜ࡋࠊ⃰ሷ㓟࡟⁐ゎᚋࠊ10 M NaOH
࡛ pH ࢆ⣙ 3.8 ࡟ㄪᩚࡋࡓࠋZn-Cu ࡢศ㞳ࡣࠊ࣮࢟ࣞࢺᶞ⬡㸦Chelex-100㸧ཬࡧ㝜࢖࢜ࣥ஺᥮
ᶞ⬡㸦AG1-X8㸧࣒࢝ࣛ࡟ࡼࡗ࡚⾜ࡗࡓࠋ67Cu ࡢᅇ཰ࡣࠊNaI ᳨ฟჾ㸦BIOSCAN㸧ࢆ⏝࠸࡚ࣜ࢔ࣝࢱ࢖࣒࡛⁐㞳ᾮࢆࣔࢽࢱ࣮ࡋ࡞ࡀࡽ⾜ࡗࡓࠋ᭱⤊ 67Cu ⁐ᾮ㸦2 M HCl㸧ࡣࠊ⵨Ⓨ஝ᅛᚋࠊ
0.1 M 㓑㓟࢔ࣥࣔࢽ࣒࢘㸦pH=5.5㸧࡟⁐ゎ࣭ࢁ㐣㸦0.22 µm㸧ࡋ࡚ᶆ㆑ᐇ㦂࡟⏝࠸ࡓࠋDOTA, TETA
ࡢ 0.1 M 㓑㓟࢔ࣥࣔࢽ࣒࢘⁐ᾮ࡜ 67Cu ⁐ᾮࢆ➼㔞ΰྜࡋࠊ40Υ࡛ 2 ᫬㛫཯ᛂࡉࡏࠊࢩࣜ࢝ࢤ
ࣝ TLC ศᯒ㸦ᒎ㛤⁐፹㸸1㸸1 ࣓ࢱࣀ࣮ࣝ㸫10㸣㓑㓟࢔ࣥࣔࢽ࣒࢘㸧࡟ࡼࡗ࡚ᶆ㆑⋡ࢆồࡵࡓࠋ࡞࠾ࠊCu-Zn ᇶᮏⓗศ㞳࣭⢭〇ἲࡢ᳨ウࡣࠊᮾᾏ ᰾⼥ྜ୰ᛶᏊ※᪋タ࡛ࠊ3H(d,n)4He ཯ᛂ࡛ᚓࡽࢀࡿ㹼14 MeV ୰ᛶᏊࢆኳ↛ ZnO ࡟↷ᑕࡋ࡚ᚓࡽࢀࡿ 64Cu, 65Zn ࢆ⏝࠸࡚⾜ࡗࡓࠋ㻌䛆⤖ᯝ䞉⪃ᐹ䛇㻌 natC(d,n)཯ᛂ࡟ࡼࡿ㧗㏿୰ᛶᏊࢆ⏝࠸࡚⏕ᡂࡋࡓ 67Cu ࢆ࣮࢟ࣞࢺᶞ⬡ + 㝜࢖࢜ࣥ஺᥮ᶞ⬡㸰ẁ࣒࢝ࣛศ㞳࣭⢭〇ἲࢆ⏝࠸࡚༢㞳ࡋࡓ᭱⤊ 67Cu ⁐ᾮࡢȚ⥺ࢫ࣌ࢡࢺࣝࢆᅗ࡟
♧ࡍࠋȚ⥺ࢫ࣌ࢡࢺࣝ࠿ࡽࠊ୙⣧≀ RI ࡣ᳨ฟࡉࢀࡎࠊᨺᑕᛶ᰾✀⣧ᗘࡢ㧗࠸ 67Cu ⁐ᾮࡀᚓࡽࢀࡓࠋࡲࡓࠊᶆ㆑ᐇ㦂ࡢ⤖ᯝࠊ25-100 "M ࡢ㓄఩Ꮚ⃰ᗘ࡛ 67Cu-DOTA ࡀ 99%௨ୖࠊ67Cu-TETA
ࡀ 97%௨ୖࡢ཰⋡࡛ྜᡂ࡛ࡁࡓࠋ௨ୖࡢ⤖ᯝࠊ natC(d,n)཯ᛂ࡟ࡼࡿ㧗㏿୰ᛶᏊࢆ⏝࠸࡚ࠊᨺᑕᛶ᰾✀⣧ᗘཬࡧ໬Ꮫⓗ⣧ᗘࡢ㧗࠸↓ᢸయ 67Cu ࢆ〇㐀ࡍࡿࡇ࡜࡟ᡂ
ຌࡋࡓࠋ ௒ᚋࡣࠊ኱㔞〇㐀໬ࡢ᳨ウཬࡧ㐲㝸᧯సࢆྍ⬟࡟ࡍࡿ⿦⨨➼ࡢ㛤Ⓨࢆ㏻ࡌ࡚ࠊ㧗⣧ᗘ 67Cu ኱㔞〇㐀ἲࡢ☜❧ࢆ┠ᣦࡍࠋ࡞࠾ࠊᮏ◊✲ࡣࠊ⛉Ꮫ◊✲㈝⿵ຓ㔠ࢆᚓ࡚ᐇ᪋
ࡋࡓࡶࡢ࡛࠶ࡿࠋᅗ ᭱⤊ 67Cu ⁐ᾮࡢȚ⥺ࢫ࣌ࢡࢺࣝ(6 ୓⛊ ᐃ㸧
Production of 67Cu for Cancer Therapy Using Fast Neutrons from natC(d,n) Reaction
HASHIMOTO, K., KAWABATA, M., SAEKI, H., TSUKADA, K., SATO, N., MOTOISHI, S.,
NAGAI, Y., WATANABE, S., ISHIOKA, S. N.

- 53 -

1B09

ࡀࢇ἞⒪࡟ྥࡅࡓ 191Pt ࡢ〇㐀ཬࡧ⢭〇㜰኱㝔⌮ ࠊ㜰኱ 5, ࢭ ࠊ㜰኱㝔་ ࠊ㔠ἑ኱⸆ ࠊ㔠኱㝔⸆  ‫ۑ‬ᯘⰋᙪ ࠊ㧗ᶫᡂே ࠊྜྷᮧᓫ ࠊụ⏣㞙ே ࠊΏ㒊┤ྐ ࠊ㔠஭Ὀ࿴ ࠊ⏿⃝㡰 ࠊᆏᯘຍዉᏊ ࠊᑠᕝᩘ㤿 ࠊᑠ㇂᫂ ࠊ⠛ཎཌ 䛆⥴ゝ䛇ࢩࢫࣉࣛࢳࣥ(CDDP)ࢆጞࡵ࡜ࡍࡿⓑ㔠⣔ᢠࡀࢇ๣ࡣᖜᗈ࠸⭘⒆࡟ᢠࡀࢇస⏝ࢆ♧ࡍࡓࡵࠊᢠࡀࢇ๣἞⒪࡟࠾࠸࡚㔜せ࡞ᙺ๭ࢆᢸࡗ࡚࠸ࡿࠋࡋ࠿ࡋ࡞ࡀࡽࠊࡇࢀࡽࡢ⸆≀ືែࢆ㠀◚ቯⓗ࡟ࢺ࣮ࣞࢫࡍࡿ᪉ἲࡣᑡ࡞ࡃࠊࡑࡢேయෆ࡛ࡢᣲືࡣ࡯࡜ࢇ࡝᫂ࡽ࠿࡟ࡉࢀ࡚࠸࡞
࠸ࠋࡇࢀࡽࡢࢺ࣮ࣞࢫ࡟᭱ࡶ᭷ຠ࡞ࡢࡣ Pt ࡢ RI ࢆ⏝࠸ࡿ᪉ἲ࡛࠶ࡿࡀࠊࡑࡢ〇㐀࡟ࡣ໬Ꮫⓗᛶ㉁࠿ࡽ 191Pt ࡜ࡢศ㞳ࡀ㞴ࡋ࠸ Ir ࡸ Os ࢆᚲせ࡜ࡋࠊᮍࡔ᭷ຠ࡞〇㐀ἲࡣ☜❧ࡉࢀ࡚࠸࡞
࠸ࠋࡑࡇ࡛ᮏ◊✲࡛ࡣ natPt(p, xn)191AuЍ191Pt ཯ᛂࢆ⏝࠸ࡓ Pt ࡢ RI ࢺ࣮ࣞࢧ࣮ࡢ᪂つ〇㐀ࠊ⢭〇ἲࡢ☜❧ࠊཬࡧࠊࡇࢀࢆ⏝࠸ࡓⓑ㔠⣔ᢠࡀࢇ๣ࡢయෆືែࡢゎ᫂ࢆ┠ᣦࡋࡓࠋᮏⓎ⾲࡛ࡣࠊ
191
Pt ࢺ࣮ࣞࢧ࣮ࡢ〇㐀ࠊ⢭〇ἲࡢ᳨ウࠊ୪ࡧ࡟ࠊື≀ࢆ⏝࠸ࡓ 191Pt-CDDP ࡢ⸆≀ືែヨ㦂࡟ࡘ࠸࡚ሗ࿌ࡍࡿࠋ
䛆ᐇ㦂䞉⤖ᯝ䛇㻌‫ ۑ‬191Pt ࡢ 〇 㐀   ኱ 㜰 ኱ Ꮫ ᰾ ≀ ⌮ ◊ ✲ ࢭ ࣥ ࢱ ࣮(RCNP)ࡢ AVF ࢧ࢖ࢡࣟࢺࣟࣥࢆ⏝࠸ 46 - 60 MeV ࡢࣉࣟࢺࣥࣅ࣮࣒ࢆ 20 !m ཌࡢ natPt ⟩࡟↷ᑕࡋࠊྛ࢚ࢿࣝ
ࢠ࣮࡛ࡢ natPt(p, xn)191AuЍ191Pt ཯ᛂ࡟ࡼࡿ 191Pt ཬࡧ௚ࡢ୙⣧≀ࡢ⏕ᡂ㔞ࢆホ౯ࡋࡓࠋࡲࡓࠊࡼࡾ኱㔞ࡢ RI
ࡢ〇㐀ࢆ᝿ᐃࡋࠊ6 mm "#2 mm ࡢ natPt ࣌ࣞࢵࢺࢆ⏝࠸ࠊྠᵝࡢᐇ㦂ࢆ⾜ࡗࡓࠋᐇ㦂ࡢ⤖ᯝࠊᚑ᮶ἲࡢ 21 - 155
191ಸࡢ㧗࠸ࣅ࣮࣒ຠ⋡࡛ Pt ࢆ〇㐀࡛ࡁࡓࠋ‫ۑ‬191Pt ࡢ⢭〇  ↷ᑕࡋࡓ natPt ⟩ࢆ Scheme. 1 ࡟ᚑࡗ࡚ฎ⌮ࡋࠊ191Pt ࢆศ㞳⢭〇ࡋࡓࠋ᭷ᶵ┦୰࡟࡚ 191Au
ࡼࡾቯኚࡋ࡚⏕ᡂࡋࡓ 191Pt ࡣࠊ㏻ᖖࡢ natPt ࡜ࡣ␗࡞ࡿ
ᣲືࢆ♧ࡋࡓࡓࡵࠊ᭷ᶵ┦ࢆ஝ᅛࡋࡓᚋሷ㓟⁐ᾮ࡟⁐ゎࡉࡏࠊᨵࡵ࡚ Au ࡜ 191Pt ࢆศ㞳ࡋࡓ࡜ࡇࢁࠊ191Pt ࡢᣲືࡀ natPt ࡜ྠᵝ࡟࡞ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋศ㞳⢭〇᧯స࡟ࡼࡾࠊ㠀ᖖ࡟ẚᨺᑕ⬟ࡢ㧗࠸ 191Pt ࡀ཰⋡ 85%௨ୖ
࡛ᚓࡽࢀࡓࠋࡇࡢ᫬ 191Pt ௨እࡢ᰾✀ࡢᏑᅾ㔞ࡣࡑࡢᨺ
Scheme. 1 purification of 191Pt
ᑕ⬟㔞ࡢ 1%௨ୗ࡛࠶ࡗࡓࠋ
‫ۑ‬191Pt-cisplatin ࡢື≀ෆ࡛ࡢ⸆≀ືែ  ᮏᡭἲ࡟ࡼࡗ࡚౪⤥ࡉࢀࡿ 191Pt ࡢ᭷ຠᛶࢆ♧ࡍࡓࡵࠊ࣐࢘ࢫࢆ⏝࠸ࡓ 191Pt-CDDP ࡢ⸆≀ືែヨ㦂ࢆ⾜ࡗࡓࠋࡲࡎࠊୖグࡢ〇㐀ࠊ⢭〇ἲࢆ⏝࠸ࠊ
RCNP ࡟࡚ 3.0 MBq ࡢ 191Pt ࡢ⏕ᡂࢆ⾜ࡗࡓࠋࡇࡢ࠺ࡕࠊ0.53 MBq ࢆ⏝࠸ࠊᩥ⊩[1]ࢆཧ⪃࡟ 191Pt
࡛ᶆ㆑ࡉࢀࡓ 191Pt-cisplatin ࢆྜᡂࡋࡓࠋᚓࡽࢀࡓ 191Pt-cisplatin ࢆ⏕⌮㣗ሷỈ࡟⁐ゎࡋࠊddy 㞝ᛶ࣐࢘ࢫ 8 ༉࡟ࡑࢀࡒࢀ 0.1 ml ࡎࡘᑿ㟼⬦ෆᢞ୚ࡋࡓࠋᢞ୚ᚋ 1 ᫬㛫ཬࡧ 24 ᫬㛫ᚋ࡟ 4 ༉ࡎࡘᒕẅࡋࠊ୺せ⮚ჾࡢ㔜㔞ࢆ ᐃᚋࠊᨺᑕ⬟ࢆ$-࢝࢘ࣥࢱ࣮ࢆ⏝࠸࡚ ᐃࡋࡓࠋ௒ᅇᚓࡽࢀࡓ⤖ᯝࡣࠊ㐣ཤࡢᐇ㦂࡜࠾࠾ࡼࡑࡢ୍⮴ࢆ♧ࡋ࡚࠾ࡾࠊヲ⣽࡟ࡘ࠸࡚ࡣᙜ᪥Ⓨ⾲ࡍࡿࠋ
[1] J. D. Hoeschele et al., Radiochimica Acta. 31. (1982).
Preparation of 191Pt for cancer treatment
HAYASHI, Y., TAKAHASHI, N., YOSHIMURA, T., IKEDA, H., WATABE, T., KANAI, Y.,
HATAZAWA, J., SAKABAYASHI, K., OGAWA, K., ODANI, A., SHINOHARA, A.,- 54 -

!"#$%&'() *+ ,-./0123 456788 3#$9

1B10

1,2

D.K. Hamlin2 K. Gagnon3
211
211

At(
At

: 7.21 h)209
Bi(

M.-K. Chyan2,2n)211At

211

E.R. Balkin2

D.S. Wilbur2

At
211

Bi

At
78

[1]

11% (n = 55)

211

At
211

(DIPE)
211

Bi

At

At

AG 1x8(mPEG)-2000(200-800 mg)
Scandronix MC-50
28 MeVmm x 20 mm x 0.17 µm thickness)211(pH 5-10)
At(Na2S2O5)

AG MP-50 (Biorad Inc.)
PEG
211
At
!
Bi

(300

(TBAB)
Capintec CRC-15t
211

At

8M
61-91%
PEG

15-29%

8M

6%

99%
8M

1M
96-99
211
At

PEG

60-79%
10-11
90%

pH
75%

211

211

At

pH 13-14

At
PEG

211

60%

Bi

At

[1] E.R. Balkin et al., Appl. Sci., 3, 636-655 (2013)

Isolation of At-211 from an irradiated Bi target using a wet chemistry approach
WATANABE, S., BALKIN, E.R., HAMLIN, D.K., GAGNON, K., CHYAN, M.-K., WILBUR D.S.

- 55 -

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᭷ᶵ⁐፹ࢆ⏝࠸ࡓࣛࢻࣥᤕ㞟ཬࡧቯኚ⏕ᡂ≀ࡢᅇ཰࡟㛵ࡍࡿᇶ♏ⓗ᳨ウ*‫ۑ‬㮖ᒣᖾಙ ࠊᒣ⏣グ኱ ࠊ㇂ཱྀᣅᾏ ࠊᮧୖᣙ෤ ࠊኳ㔝Ⰻᖹ ࠊす୰୍ᮁ ࠊ㔠ἑ኱㝔⮬↛ ࠊ㔠ἑ኱་⸆ಖ೺ ࠊ㔠ἑ኱⌮ᕤ ࠊཎᏊຊᶵᵓ  ๓⏣ⱥኴ ࠊᶓᒣ᫂ᙪ 
*䛆⥴ゝ䛇࢔࢖ࢯࢺ࣮ࣉࢆ౑ࡗࡓෆ⏝⒪ἲ࡟฼⏝ྍ⬟࡞Șᨺᑕయࡢ୰࡛ࡶࠊ༙ῶᮇ I;J ᫬㛫ࡢ JKK8&ࡣ᭱ࡶ⮫ᗋᛂ⏝ࡀᮇᚅࡉࢀࡿ࢔࢖ࢯࢺ࣮ࣉ࡛࠶ࡿࠋࡋ࠿ࡋ༙ῶᮇࡀ▷࠸ࡀࡺ࠼࡟ࡑࡢ฼⏝ࡣ〇㐀ᣐⅬࡢ኱ᆺࢧ࢖ࢡࣟࢺࣟࣥ᪋タ㏆㎶࡟ไ㝈ࡉࢀ࡚࠸ࡿࠋ኱ᆺࢧ࢖ࢡࣟࢺࣟࣥࢆ฼⏝ࡏࡎ
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ࡢ JKKG) ࡢຠ⋡ⓗᤕ㞟࠾ࡼࡧቯኚ⏕ᡂ≀ࡢ JKK8& ࡢᅇ཰࡟㛵ࡍࡿᇶ♏ⓗ᳨ウࢆ⾜ࡗࡓࠋ*䛆ᐇ㦂䛇8$ ⟩࡟ P'㸦K;JUK;S6/V26J ཌ㸧ࢆ┿✵⵨╔ࡋࡓᶆⓗ࠿ࡽᡂࡿࢫࢱࢵࢡ࡟ࠊ᪥ᮏཎᏊຊ◊✲㛤Ⓨᶵᵓᮾᾏࢱࣥࢹ࣒ຍ㏿ჾ࠿ࡽᚓࡽࢀࡿ MN71W ࡢ IR' ࣅ࣮࣒ࢆ KSNUJNN)8 ࡢ࢝ࣞࣥࢺ࡛
↷ᑕࡋ࡚ JKKG) ࢆ〇㐀ࡋࡓࠋIR' ࣅ࣮࣒↷ᑕᚋࡢ P' ᶆⓗࢆ JN6R ࣂ࢖࢔ࣝ⎼ࡢ୰࡬ධࢀࠊKX6R
ࡢྛ✀᭷ᶵ⁐፹㸦ࢪ࢖ࢯࣉࣟࣆ࢚࣮ࣝࢸࣝ:* ࣓ࢳࣝ࢖ࢯࣈࢳࣝࢣࢺࣥ:* ࢺ࢚ࣝࣥ:* ࣊࢟ࢧࣥ:*ࢹ࢝ࣥ:* ࢻࢹ࢝ࣥ㸧ࢆຍ࠼ࡓᚋ࡟ M7 ◪㓟ࢆ J6R ຍ࠼࡚⁐ゎࡋࡓࠋṧࡗࡓ 8$ ⟩ࢆྲྀࡾ㝖ࡁࠊ⵨␃Ỉࢆ J6R ຍ࠼࡚ࣂ࢖࢔ࣝ⎼୰ࡢẼ┦ࢆῶࡽࡋࠊK ศ㛫ࡢ᣺࡜࠺ࢆ⾜࠸ JKKG) ࢆ᭷ᶵ┦࡬࡜ᢳฟࡋࡓࠋᢳฟᚋࠊ᭷ᶵ┦࠿ࡽ KS6Rࠊ◪㓟┦ࢆ J6R ศྲྀࡋࠊྛࠎࢆ D1 ᳨ฟჾ࡛Ț⥺ࢫ࣌ࢡࢺ࣓ࣟࢺ࣮ࣜࢆ⾜࠸ࠊJKKG) ࡢ᭷ᶵ┦࡬ࡢᤕ㞟⋡ࢆồࡵࡓࠋ*୍᪉ࠊJKKG) ࠿ࡽ⏕ᡂࡍࡿ JKK8& ࡢᅇ཰࡟ࡣ G) ࡢᤕ㞟࡟⏝࠸ࡓ᭷ᶵ⁐፹㸦࣊࢟ࢧࣥ:* ࢹ࢝ࣥ:*ࢻࢹ࢝ࣥ㸧࡜஧┦ࢆᙧᡂࡋࠊୟࡘࡑࡢᚋࡢ 8& ᶆ㆑໬ྜ≀ࡢసᡂࡍࡿࡇ࡜ࢆ⪃៖ࡋࠊ࣓ࢱࣀ࣮
ࣝࢆ㑅ᢥࡋࡓࠋJKKG) ࢆᢳฟࡋࡓᚋࡢ᭷ᶵ┦ KS6R ࢆ KS ᫬㛫௨ୖ㟼⨨ࡋ JKK8& ࡢᡂ㛗ࢆᚅࡗࡓᚋ࡟ࠊ᭷ᶵ┦㸦࢔ࣝ࢝ࣥ┦㸧࠿ࡽ N;S6R ࢆศྲྀࡋ࡚ᾮయࢩࣥࢳ࣮ࣞࢩࣙࣥ࢝࢘ࣥࢱ࣮㸦R=F㸧
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1B12

䝃䝻䝣䜵䞁ᆺ㓄఩Ꮚ䜢䜒䛴ඵ㓄఩䜴䝷䞁(V)䛚䜘䜃䜴䝷䞁(IV)㘒య䛻䛚䛡䜛Ᏻᐃᵓ㐀䛾ኚ໬
䠄㜰኱㝔⌮㻝䚸㜰኱㻾㻵䝉㻞䠅䕿᳃ᮏె♸㻝䚸ᯇ⏣ెᜨ㻝䚸୰ሯ࿴ே㻝䚸⠛ཎ㻌 ཌ㻝䚸ྜྷᮧ㻌 ᓫ㻞㻌㻌䛆⥴ゝ䛇㻌 Schiff ሷᇶࡀ㓄఩ࡋࡓ 8 㓄఩ U(IV)㘒యࡣ 2 ✀㢮ࡢᵓ㐀␗ᛶయࢆ᭷ࡋࠊ␗ᛶ໬ࡍࡿࡇ
࡜ࡀ▱ࡽࢀ࡚࠸ࡿࠋ᭱㏆ࠊᙜࢢ࣮ࣝࣉࡣࢧࣟࣇ࢙ࣥᆺ㓄఩Ꮚ(Fig. 1)ࢆ⏝࠸ࡓ U(IV)㘒యࢆ 1㟁Ꮚ㓟໬ࡍࡿࡇ࡜࡛Ᏻᐃ࡞ U(V)㘒యࢆྜᡂࡋࡓࠋᵓ㐀ゎᯒࡢ⤖ᯝࠊฟⓎࡢ U(IV)㘒యࡣ 4 ᪉㏫ࣉࣜࢬ࣒ᵓ㐀࡛࠶ࡗࡓࡀࠊᚓࡽࢀࡓ U(V)㘒యࡣ 12 㠃యᵓ㐀ࢆ࡜ࡗ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋࡇࡢࡼ࠺࡟㓟໬࡟క࠸ᵓ㐀ኚ໬ࡀ㉳ࡇࡿࡇ࡜ࡀศ࠿ࡗࡓࡢ࡛ࠊ௒ᅇࡣࡼࡾヲ⣽࡟ࠊྠᙧࡢ U(IV)㘒యཬࡧ U(V)㘒యࡢᵓ㐀ኚ໬ࢆㄪ࡭ࡓࡢ࡛ሗ࿌ࡍࡿࠋ
Fig. 1, ࢧࣟࣇ࢙ࣥᆺ㓄఩Ꮚ䛆⤖ᯝ䛸⪃ᐹ䛇㻌 THF ୰ࠊUCl4 ࡜ 2 ᙜ㔞ࡢࢧࣟࣇ࢙ࣥᆺ㓄఩Ꮚࢆ❅⣲㞺ᅖẼୗ࡛ຍ⇕㑏ὶࡍࡿ࡜ⲔⰍᅛయࡀᚓࡽࢀࡓࠋࡇࡢᅛయࢆ CH2Cl2 ࠿ࡽ෌⤖ᬗࡍࡿ࡜ࠊFig. 2 ࡟♧ࡍࡼ࠺࡟᪤▱ࡢࠊ࢘ࣛࣥ୰ᚰࡀ 4 ᪉㏫ࣉࣜࢬ࣒ᵓ㐀ࢆᣢࡘ 1a ࡀᚓࡽࢀࡓࠋ୍᪉ࠊTHF ࠿ࡽ෌⤖ᬗࡍࡿ࡜ 1a ࡜࡜ࡶ࡟ 1b ࡀᚓࡽࢀࡓࠋᵓ㐀ゎᯒࡢ⤖ᯝࠊFig. 2 ࡟♧ࡍࡼ࠺࡟ 1b ࡛࢘ࣛࣥ୰ᚰࡣ 12 㠃యᵓ㐀࡜࡞ࡗ࡚࠸ࡓࠋ1a ࡜ 1b ࡢࢧ࢖ࢡࣜࢵࢡ࣎ࣝࢱ࣓ࣥࢺ࣮ࣜ(CV)ࢆ ᐃࡍࡿ࡜ࠊ1aࠊ1b ࡣࡑࢀࡒࢀ-0.31 Vࠊ-0.43 V ࡟ 1 㟁Ꮚࡢ㓟໬㑏ඖἼࢆ♧ࡋࡓࠋࡇࢀࡽࡢ㓟໬㑏ඖἼࡢᙉᗘࡣ᫬㛫࡜࡜ࡶ࡟ኚ໬ࡋࠊ᭱⤊ⓗ࡟ྠ୍Ἴᙧ࡜࡞ࡗࡓࠋࡇࡢἼᙧࡣ 1aࠊ1b ࡑࢀࡒࢀࡢᡂศࡢ㊊ࡋྜࢃࡏ࡟࡞
ࡗ࡚࠾ࡾࠊ1a ֎ 1b ࡢ␗ᛶ໬࡟࠾ࡅࡿᖹ⾮ᐃᩘࡣ 0.082 ࡜⟬ฟࡉࢀࡓࠋࡇࡢ⤖ᯝ࠿ࡽ U(IV)㘒
య࡛ࡣ 4 ᪉㏫ࣉࣜࢬ࣒ᵓ㐀ࡀ⇕ⓗ࡟Ᏻᐃ࡞ᵓ㐀࡛࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋḟ࡟ CH2Cl2 ୰࡛ 1a ࢆ໬Ꮫⓗ࡟ 1 㟁Ꮚ㓟໬ࡋᩘ᪥㛫᧠ᢾࡍࡿ࡜࢘ࣛࣥ୰ᚰࡀ 12 㠃యᵓ㐀ࢆᣢࡘ᪤▱ࡢ 2b ࡀᚓࡽࢀࠊ㓟໬཯ᛂ࡜࡜ࡶ࡟࢘ࣛࣥ୰ᚰࡢᵓ㐀ኚ໬ࡀ㉳ࡇࡿࡇ࡜ࢆ☜ㄆࡋࡓࠋ௒ᅇࠊ᧠ᢾ᫬㛫ࢆ 10 ศ࡟ࡋࡓ࡜ࡇࢁࠊ2b ࡜ࡣ⁐ゎᗘࡀ␗࡞ࡿ⤖ᬗ 2a ࡀᚓࡽࢀࡓࠋᵓ㐀ゎᯒࡢ⤖ᯝࠊ2a ࡟࠾ࡅࡿ࢘ࣛࣥ୰ᚰࡣ 4 ᪉㏫ࣉࣜࢬ࣒ᵓ㐀ࢆ࡜ࡗ࡚࠸ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋCV ᐃ࡟ࡼࡾࠊ2a ࡜
2b ࡢ 1 㟁Ꮚ㓟໬㑏ඖ㟁఩ࡣࡑ
ࢀࡒࢀ 1aࠊ1b ࡜➼ࡋࡃ-0.31 V
ཬࡧ-0.43 V ࡛ほ ࡉࢀࡓࡇ࡜࠿ࡽ CV ࡢࢱ࢖࣒ࢫࢣ࣮࡛ࣝࠊ
U(V/IV)ࡢ㓟໬㑏ඖ཯ᛂࡣྠ୍
ᵓ㐀㛫࡛࡯ࡰྍ㏫࡟㉳ࡇࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋࡉࡽ࡟
2aࠊ2b ࡶ 1a ࡜ 1b ྠᵝ࡟⁐ᾮ୰࡛␗ᛶ໬ࡍࡿࡇ࡜ࡀ CV ࡢἼᙧࡢ᫬㛫ኚ໬࠿ࡽศ࠿ࡗࡓࠋ
ࡑࡢ཯ᛂ࡟࠾ࡅࡿᖹ⾮ᐃᩘࢆ⟬ฟࡋࡓ࡜ࡇࢁ 6.5 ࡜࡞ࡾࠊᖹ
⾮ࡣ 2b ࡟኱ࡁࡃ೫ࡗ࡚࠾ࡾࠊ
Fig. 2, 㓟໬㑏ඖ཯ᛂ࡜ᵓ㐀ኚ໬ࡢࢫ࣮࣒࢟
U(V)㘒య࡛ࡣ 12 㠃యᵓ㐀ࡢ࡯࠺ࡀ⇕ⓗ࡟Ᏻᐃ࡛࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋࡇࡢࡼ࠺࡟௒ᅇࡢ◊✲࡛ࡣࠊྠᙧᵓ㐀࡛ࡶ࢘ࣛࣥࡢ㓟໬ᩘࡢ㐪࠸࡛Ᏻᐃᵓ㐀ࡀኚ໬ࡍࡿ࡜࠸࠺⯆࿡῝࠸⤖ᯝࡀᚓࡽࢀࡓࠋ
Conversion of Stable Geometrical Isomers between Pentavalent and Tetravalent Uranium Complexes
with Salophen-type Ligand
Morimoto, K., Matsuda, K., Nakatsuka, K., Shinohara, A., and Yoshimura, T..

- 57 -

1B13

㔠ᒓඖ⣲Ꮡᅾୗ࡟࠾ࡅࡿ /X ࡜஧ᐁ⬟ᛶ࣮࢟ࣞࢺ๣࡜ࡢ㘒ᙧᡂཎᏊຊᶵᵓ ‫ۑ‬Ώ㎶ ᬛࠊᶫᮏ࿴ᖾࠊ▼ᒸ඾Ꮚ䛆⥴ゝ䛇㻌ᡃࠎࡣࠊࡀࢇ἞⒪࡟᭷⏝࡞ș⥺ᨺฟ᰾✀࡛࠶ࡿ Lu-177㸦༙ῶᮇ 6.7 ᪥㸧ࡢ〇㐀◊✲㸦176Yb (n,!) 177Yb (T1/2=1.911 h) " 177Lu 㸧 ࡢ ୍ ⎔ ࡜ ࡋ ࡚ ࠊ ஧ ᐁ ⬟ ᛶ ࢟ ࣞ ࣮ ࢺ ๣ ࡛ ࠶ ࡿ
1,4,7,10-tetraazacyclododecan-N,N̓,N̓̓,N̓̓̓-tetraacetic acid㸦DOTA㸧ࢆ⏝࠸ࡓ 177Lu-DOTAᢠయࡢᶆ㆑ࡀྍ⬟࡞㧗⣧ᗘ↓ᢸయ 177Lu ࡢศ㞳࣭⢭〇ἲࡢ㛤Ⓨࢆ㐍ࡵ࡚࠸ࡿࠋࡇࢀࡲ࡛ࠊ஧ᐁ
⬟ᛶ࣮࢟ࣞࢺ๣࡬ࡢ 177Lu ᑟධ᫬࡟ Fe ➼ࡢ୙⣧≀ࡀഹ࠿࡛ࡶᏑᅾࡍࡿ࡜ࠊ177Lu ࡜➇ྜ㜼ᐖࡀ⏕ࡌࠊᶆ㆑⋡ࡢపୗࡀ♧၀ࡉࢀࡿᐇ㦂ࢹ࣮ࢱࢆྲྀᚓࡋ࡚ࡁࡓࠋࡑࡇ࡛ࠊ୙⣧≀ඖ⣲ࡢ✀㢮ཬࡧྵ᭷㔞࡟ࡼࡿ㜼ᐖࢆయ⣔ⓗ࡟᫂ࡽ࠿࡟ࡋࠊᚓࡽࢀࡓ▱ぢࢆ 177Lu ࡢ⢭〇ἲ࡟ࣇ࢕࣮ࢻࣂࢵࢡ
ࡍࡿࡓࡵࠊ㔠ᒓඖ⣲Ꮡᅾୗ࡟࠾ࡅࡿ DOTA ཬࡧ diethylenetriamine- N,N,N̓,N̓̓,N̓̓-pentaacetic
177
acid (DTPA)࡬ࡢ Lu ᑟධ࡟㛵ࡋ᳨࡚ウࢆ㐍ࡵ࡚࠸ࡿࠋᮏⓎ⾲࡛ࡣࠊ᪤Ꮡࡢ⤖ᯝ࡟ຍ࠼࡚ࠊ
MgࠊCu ཬࡧ Yb ࡟ࡼࡿ㘒ᙧᡂ㜼ᐖ࡟ࡘ࠸࡚ྲྀᚓࡋࡓ▱ぢ࠿ࡽࠊMgࠊCaࠊFeࠊCuࠊZn ཬࡧ
Yb ࡢ㘒ᙧᡂ㜼ᐖ࡟ࡘ࠸࡚⪃ᐹࡍࡿࠋ䛆ᐇ㦂䛇㻌
Cu(II) ࡲࡓࡣ Yb(III)⁐ᾮ㸦2.5 x 10-5
5 #L ࡢ 177Lu(III)⁐ᾮ (Lu㸸5.0 x 10-5 M )࡜ 5 #L ࡢ Mg(II)ࠊ
M㹼2.5 x 10-3 M㸧࡜ࡢΰྜ⁐ᾮ࡟ࠊ0.875 #L ࡢ㓑㓟ࣂࢵࣇ࢓࣮(3 M, pH=6.0)ࢆຍ࠼ࡓᚋࠊ10 #L
ࡢ DOTA ࡲࡓࡣ DTPA ⁐ᾮ(5.0 x 10-5 M)ࢆຍ࠼࡚ 40$C ࡛ 1.5 ᫬㛫཯ᛂࡉࡏࡓࠋⷧᒙࢡ࣐ࣟࢺ
ࢢࣛࣇ࢕࣮࡟ࡼࡾࠊ177Lu-DOTA ࡲࡓࡣ 177Lu-DTPA ࡢᨺᑕ⬟㔞ࠊཬࡧᮍ཯ᛂࡢ 177Lu ࡢᨺᑕ⬟
㔞ࢆồࡵࠊ
㘒ᙧᡂ⋡
㸦㘒ᙧᡂᐇ㦂࡟౑⏝ࡋࡓ 177Lu ࡢᨺᑕ⬟㔞࡟ᑐࡍࡿ⏕ᡂࡋࡓ 177Lu-DOTA ࡲࡓࡣ 177Lu-DTPA ࡢᨺᑕ⬟㔞㸧ࢆ⟬ฟࡋ࡚ࠊྛ㔠ᒓඖ⣲࡜ࡢẚ㍑ࢆᐇ᪋ࡋࡓࠋ
䛆⤖ᯝཬ䜃⪃ᐹ䛇
⾲ 1 ࡟ࡣࠊDOTA ཬࡧ DTPA ࡜ 177Lu ࡜ࡢ㘒ᙧᡂ࡟࠾ࡅࡿ㔠ᒓඖ⣲ࡢ㜼ᐖࡢᙉࡉ㸦ᐇ㦂⤖ᯝ㸧࡜ࠊLu ࡟ᑐࡍࡿ㔠ᒓඖ⣲ࡢᏳᐃᗘᐃᩘࡢẚ㸦ᩥ⊩್㸧ࡢ኱ᑠ㛵ಀࢆ♧ࡋࡓࠋᏳᐃᗘᐃᩘࡢẚࡣࠊ⌮ㄽⓗ࡞㔠ᒓඖ⣲࡟ࡼࡿ㜼ᐖࡢᙉࡉࢆ♧ࡋ࡚࠸ࡿࠋᐇ㦂⤖ᯝ࡜Ᏻᐃᗘᐃᩘࡢẚ࡜ࢆẚ㍑
ࡍࡿ࡜ࠊDOTA ࡛ࡣࠊFeࠊYbࠊCu ཬࡧ Zn ࡢ㡰ᗎࡀ␗࡞ࡗ࡚࠾ࡾࠊDTPA ࡛ࡣࠊFe ཬࡧ Zn
ࡢ㡰ᗎࡀ␗࡞ࡗ࡚࠸ࡿࠋᡃࠎࡢᐇ㦂⤖ᯝࡣࠊᏳᐃᗘᐃᩘ࠿ࡽࡔࡅ࡛ࡣ᏶඲࡟ࡣㄝ࡛᫂ࡁ࡞࠸
ࡇ࡜ࡀ♧၀ࡉࢀࡓࠋࡲࡓࠊ௒ᅇࡢᐇ㦂⤖ᯝ࠿ࡽࠊ177Lu ࡢ〇㐀࡬ࣇ࢕࣮ࢻࣂࢵࢡྍ⬟࡞᭷⏝࡞▱ぢ࡜ࡋ࡚ࠊ〇㐀ࡋࡓ 177Lu ࡟ྵࡲࢀࡿ Mg ཬࡧ Ca ࡣ㜼ᐖࢆ㉳ࡇࡉ࡞࠸ࡓࡵྲྀࡾ㝖ࡃᚲせࡣ↓࠸ࡀࠊFeࠊCuࠊZn ཬࡧ Yb ࡣ㜼ᐖࢆ㉳ࡇࡍࡓࡵྲྀࡾ㝖ࡃᚲせࡀ࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡟࡞ࡗࡓࠋ
⾲ 1 㔠ᒓඖ⣲࡟ࡼࡿ㜼ᐖࡢᙉࡉཬࡧ Lu ࡟ᑐࡍࡿ㔠ᒓඖ⣲ࡢᏳᐃᗘᐃᩘࡢẚࡢ኱ᑠ㛵ಀLu ࡟ᑐࡍࡿ㔠ᒓඖ⣲ࡢᏳᐃᗘᐃᩘࡢẚࡢ㔠ᒓඖ⣲࡟ࡼࡿ㜼ᐖࡢᙉࡉ኱ᑠ㛵ಀ㸦ᩥ⊩್㸧㸦ᐇ㦂⤖ᯝ㸧DOTA

Mg, Ca < Fe < Yb < Cu < Zn

Mg < Ca < Zn < Fe < Cu < Yb

DTPA

Mg, Ca < Zn < Fe < Cu < Yb

Mg < Ca < Fe < Zn < Cu < Yb

Complexation of 177Lu with bifunctional chelators in the presence of competing metals
WATANABE, S., HASHIMOTO, K., ISHIOKA, N. S.

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