3D-a01

スラッシュ流体ᶧ૕⓸⚛䈱᳓ᐔ▤ౝᵹേᤨ䈱ᴣ㛛ᾲ䊶ᵹേ․ᕈ㩷㪫㪿㪼㫉㫄㫆㪄㪝㫃㫌㫀㪻㩷㪚㪿㪸㫉㪸㪺㫋㪼㫉㫀㫊㫋㫀㪺㫊㩷㫆㪽㩷㪫㫎㫆㩷㪧㪿㪸㫊㪼㩷㪙㫆㫀㫃㫀㫅㪾㩷㪣㫀㫈㫌㫀㪻㩷㪥㫀㫋㫉㫆㪾㪼㫅㩷㫀㫅㩷㪸㩷㪧㫀㫇㪼㩷᳗੗㩷 ቁ૫䋬ᷡ᳓㩷 㗔䋬㜞ᯅ㩷 ᐘ৻䋬ᄢᐔ㩷 ൎ⑲㩷 䋨᧲ർᄢ㩷 ᵹ૕⎇䋩㩷ዊᨋ㩷 ᒄ᣿䋬↰ญ㩷 ⑲ਯ㩷 䋨㪡㪘㪯㪘䋩㩷
NAGAI Takayoshi, SHIMIZU Ryo, TAKAHASHI Koichi, OHIRA Katsuhide (IFS, Tohoku University)
KOBAYASHI Hiroaki, TAGUCHI Hideyuki (JAXA)
E-mail: nagai@luna.ifs.tohoku.ac.jp
1.

㩷

䈲䈛䉄䈮
⃻࿷㧘ቝቮ⥶ⓨ⎇ⓥ㐿⊒ᯏ᭴(JAXA)ߪ㧘㘧ⴕㅦᐲ Mach 5㩷ߩᭂ⿥㖸ㅦᣏቴᯏࠍታ⃻ߔࠆߎߣࠍ⋡ᮡߦ㧘ᶧ૕᳓⚛ࠍΆ㩷ᢱߣߒߚᭂ⿥㖸ㅦ੍಄࠲࡯ࡏࠫࠚ࠶࠻ࠛࡦࠫࡦᛛⴚߩ⎇㩷ⓥ㐿⊒ࠍㅴ߼ߡ޿ࠆ㧚ࠛࡦࠫࡦᆎേᤨߩଏ⛎ೋᦼᲑ㓏ߦ߅㩷޿ߡ㈩▤♽ߪᏱ᷷ߢ޽ࠆߚ߼㧘ᶧ૕᳓⚛ߪ᳇ᶧੑ⋧ᵹേ⁁㩷ᘒߣߥࠅ㧘Άᢱᵹ㊂߇቟ቯߒߥߊߥࠆ㧚߹ߚ㧘㜞ㅦ㘧ⴕᤨ㩷ߩ੍಄ེߢߪ㜞᷷ⓨ᳇ߣᶧ૕᳓⚛߇ᾲ੤឵ࠍⴕ߁ߩߢ㧘ᒝ㩷㪝㫃㫆㫎㩷㪻㫀㫉㪼㪺㫋㫀㫆㫅㩷

Fig. 1

Table. 1 Test conditions.

೙ኻᵹᴣ㛛ᾲવ㆐޽ࠆ޿ߪ㧘ᶧන⋧ᵹߦࠃࠆᒝ೙ኻᵹᾲવMean Velocity U㩷㆐ࠍ↪޿ࠆߎߣߦߥࠅ㧘વᾲᕈ⢻ߣᵹേ․ᕈߩ㑐ଥࠍᛠីᧄ⎇ⓥߢߪ᳓ᐔવᾲ▤ౝࠍᵹേߔࠆ᳇ᶧੑ⋧ᵹߩᵹേ᭽ᑼࠍടᾲㇱਅᵹߢ㜞ㅦᐲࠞࡔ࡜ࠍ↪޿ߡⷰኤߒ㧘ᵹേ᭽ᑼߣ࿶ജ៊ᄬ߅ࠃ߮ᾲવ㆐․ᕈߩ⋧㑐ࠍᬌ⸛ߒߚ㧚 ᵹേ⹜㛎ㇱ䈱᭎⇛࿑䉕 Fig. 1 䈮␜䈜䋮⹜㛎ㇱ䈱વᾲ▤䈮䈲ౝᓘ 15 mm 䈱㌃⵾౞▤䉕↪䈇䋬ᄖო䈎䉌વᾲ✢䊍䊷䉺䊷䈮䉋䈦䈩ടᾲ䈚䈢䋮䉁䈢䋬ᾲવ㆐䈲ടᾲ㐿ᆎㇱਅᵹ 700 mm ࿾ὐ䈪䋬Ꮕ࿶䈲ਅᵹ 200 mm 䈱୘ᚲ䈎䉌 550 mm 䈱඙㑆䈪⸘᷹䈚䈢䋮⹜㛎ⵝ⟎䈱⹦⚦䈲೨ႎ[1]䉕ෳᾖ䈘䉏䈢䈇䋮⹜㛎ㇱ䈮䈍䈔䉎ᐔဋᵹㅦ䉇ᾲᵹ᧤䋬䉪䉥䊥䊁䉞䉕 Table. 1 䈮␜䈜䋮㩷

14

㩷

12

㩷

10

Wavy flow
Annular flow
PA + Ӡ PF (A)Homogeneous model :Ӡ
A+F

8

Separation model : A+F
Ӡ PA + Ӡ PF
Homogeneous model :Ӡ
F PF

㩷
㩷

4

㩷

2

㩷

0
0.000001
10-6

㩷

2

㩷 㪝㫀㪾㪅㩷 㪉 ߦᾲᵹ᧤߇ 5~25 kW/m ߩ႐วߩࠢࠝ࡝࠹ࠖߣ࿶
ജ៊ᄬᲧߩ㑐ଥࠍ␜ߔ㧚❑ゲߪታ㛎୯ӠPTP ࠍߘߩ㓙ߩᵹ㊂߇ోߡᶧ૕ߣߒߡᵹࠇߚ႐วߩ࿶ജ៊ᄬӠPL0 ߢήᰴరൻߒߚ㧚᳇ᵃᵹߢߪ࿶ജ៊ᄬᲧߩ୯߇߶߷ 1 ߢ޽ࠅ㧘ᶧන⋧ᵹേᤨߣੑ⋧ᵹേᤨߩᏅ߇ዊߐ޿㧚߹ߚ㧘᳇ᵃᵹએᄖߢߪ㧘ဋ⾰ᵹࡕ࠺࡞߆ࠄ᳞߼ߚടㅦ៊ᄬߣ៺ᡂ៊ᄬߩ๺ (ӠPA+ӠPF) ߣ㧘៺ᡂ៊ᄬߩߺ (ӠPF) ߩ㑆ߦታ㛎୯߇ಽᏓߒ
ߚ㧚ࡊ࡜ࠣᵹ߿ࠬ࡜ࠣᵹߢߪታ㛎୯ߪဋ⾰ᵹࡕ࠺࡞㧘ᵄ⁁ᵹߢߪಽ㔌ᵹࡕ࠺࡞ߦࠃࠆ⹏ଔ߇ㆡᒰߢ޽ࠆߣ⸒߃ࠆ㧚㩷㪝㫀㪾㪅㩷 㪊 䈮ᾲᵹ᧤߇ 5~25[kW/m2]ߩ႐วߩ᳇ᶧੑ⋧ᵹߩᾲવ㆐ᑼߣߩᲧセࠍ␜ߔ㧚NuTP ߪታ㛎ߢᓧࠄࠇߚ࠿࠮࡞࠻ᢙ㧘
NuLz ߪᶧ⋧ㇱಽ߇ోߡᵹ〝ࠍᵹࠇࠆߣߺߥߒߚᤨߩ࠿࠮
࡞࠻ᢙߢ㧘Sieder-Tate ߩᑼࠃࠅዉ಴ߒߚ㧚߹ߚ㧘Xtt ߪ
Lockhart-Martinelli ߩࡄ࡜ࡔ࡯࠲ߢ޽ࠆ㧚ᧄታ㛎ߦ߅޿ߡߪ
1/Xtt > 0.01 ߩ▸࿐(᳇ᵃᵹࠍ㒰޿ߚ▸࿐)ߢታ㛎୯ߣᾲવ㆐
⋧㑐ᑼߣߩ㑆ߦ±20%ߢ⦟޿৻⥌ࠍ␜ߒߚ㧚

(C)

(B)
(C)

0.0001
10-4

0.001
10-3

0.01
10-2

0.1-1
10

1

Pressure drop ratio compared to pressure drop equation.
0.3689§ 1 ·NuTPApproximate¸¸
5.802¨¨ curve
NuLz© X tt ¹

Nu TP
Nu Lz

㩷

㩷

0.00001
10-5

10

㩷

㩷

(B)

Vapor Quality x [-]

㩷

㩷

(A)

Bubbly flow
Plug flow
Slug flow6㩷㩷

3㪅㩷 㩷 ታ㛎⚿ᨐ䈍䉋䈶⠨ኤ㩷

0 – 0.07 [㧙]0㧙25 [kW/m ]㩷

㩷

㩷 2
Fig.

㩷

Quality x㩷

2

㩷

㩷

ታ㛎ⵝ⟎䈍䉋䈶ታ㛎ᣇᴺ

Heat Flux q㩷, R2 0.9039

§ 1 ·
¸¸
5 . 802 ¨¨© X tt ¹+20%

0 . 3689,

R2

0 . 9039

NuTP/NuLz [-]2.

0㧙2.5 [m/s]㩷

ӠPTP/ӠPL0 [-]ߔࠆߎߣ߇㊀ⷐߣߥࠆ㧚

Schematic illustration of the test section.

-20%
T_upper㩷T_upper㩷㩷Approximate curve
1
0.01

0.1

1

㩷
㩷Fig. 3Comparison between the experimental value and the㩷approximate curve.

1/Xtt [-]

⻢ㄉ㩷ᧄ⎇ⓥߪ㧘ᵹ૕⎇ߦࠃࠆ౏൐౒ห⎇ⓥ߅ࠃ߮ᵹ૕⎇㧙
JAXA ߩ౒ห⎇ⓥߦࠃࠅታᣉߒߚ㧚㩷ෳ⠨ᢥ₂㩷
[1] Shimizu et al.: Abstracts of CSJ Conference, 81, (2009), p.60.

― 205 ―

第82回

2010年度春季低温工学・超電導学会

3D-a02

スラッシュ流体ᭂૐ᷷ࠬ࡜࠶ࠪࡘᵹ૕ߩࠦ࡞ࠥ࡯࠻▤ౝᵹേᤨߩ࿶ജ៊ᄬૐᷫ⃻⽎㪧㫉㪼㫊㫊㫌㫉㪼㩷㪻㫉㫆㫇㩷㫉㪼㪻㫌㪺㫋㫀㫆㫅㩷㫆㪽㩷㪺㫉㫐㫆㪾㪼㫅㫀㪺㩷㫊㫃㫌㫊㪿㩷㪽㫃㫌㫀㪻㩷㪽㫃㫆㫎㫀㫅㪾㩷㫀㫅㩷㪸㩷㪺㫆㫉㫉㫌㪾㪸㫋㪼㪻㩷㪹㪼㫃㫃㫆㫎㫊㩷
ᄢᐔൎ⑲‫ޔ‬ᄢᯅ⋥᮸‫ޔ‬㜞ᯅᐘ৻㧔᧲ർᄢᵹ૕⎇㧕
OHIRA Katsuhide, OHASHI Naoki, TAKAHASHI Koichi (Institute of Fluid Science, Tohoku University)
E-mail: ohira@luna.ifs.tohoku.ac.jp㧝㧚ߪߓ߼ߦෳ⠨ᢥ₂ ᭂૐ᷷ᶧ૕ਛ䈮ᶧ૕䈫หᚑಽ䈱࿕૕☸ሶ䈏ᷙ࿷䈜䉎࿕ᶧ

[1] K. Ohira: J.Cryo. Soc. Jpn, 41(2006) pp.61-72.

ੑ⋧䉴䊤䉾䉲䊠ᵹ૕䈲䇮㜞ኒᐲᵹ૕䇮Ⲣ⸃ᾲ䉕೑↪䈜䉎ᯏ⢻[2] K. Ohira, et al.: Abstracts of CSJ Conference, 80(2009) p.70

࿑ 1 䈮␜
ᕈᾲᵹ૕䈫䈚䈩ఝ䉏䈢․ᕈ䉕ᜬ䈦䈩䈇䉎䇯⊒⴫⠪䈲࿑[3] R. C. Hawthorne, et al.: Product Eng., 34(1963) pp.98-100.

䈜䉴䊤䉾䉲䊠᳓⚛䉕೑↪䈚䈢㜞ല₸᳓⚛䉣䊈䊦䉩䊷䉲䉴䊁䊛䉕[4] K. Ohira: Jpn. J. Multiphase Flow, 23(2009) pp.373-380.

ឭ᩺䈚䈩㐿⊒䉕ታᣉ䈚䈩䈇䉎[1]䇯ᧄ䉲䉴䊁䊛㐿⊒䈮䈲䇮ャㅍ

Slush H2
Production byAuger Method↪㈩▤䉇⿥વዉㅍ㔚䈱಄ᇦ↪㈩▤䈮૶↪䈘䉏䉎䉮䊦䉭䊷䊃▤
Hydrogen
Liquefierౝ䈱䉴䊤䉾䉲䊠ᵹ૕䈱ᵹേ․ᕈ䈏㊀ⷐ䈫䈭䉎䇯䉮䊦䉭䊷䊃▤ౝ䉕ᵹേ䈜䉎䉴䊤䉾䉲䊠⓸⚛䈱࿶ജ៊ᄬ᷹ቯ䉕ⴕ䈇䇮䉰䊑䉪䊷䊦

Slush H2䌌䌈䋲ᶧ૕⓸⚛䉋䉍䉅࿶ജ៊ᄬ䈏ૐᷫ䈜䉎࿶ജ៊ᄬૐᷫലᨐ䈏ೋ䉄䈩ᓧ䉌䉏䇮ૐᷫ⃻⽎䈱⸃᣿䉕ⴕ䈦䈢䈱䈪ႎ๔䈜䉎䇯㩷

Pressure Drop &Heat Transfer
Characteristics ofSlush Hydrogen

Power
Transmission
Terminal㧞㧚ታ㛎ⵝ⟎߅ࠃ߮ታ㛎ᣇᴺ㩷 ᵹേ⹜㛎ⵝ⟎䈲ᣢႎ[2]䉕ෳᾖ䈘䉏䈢䈇䇯䉮䊦䉭䊷䊃▤䈲ౝAuger Method(80 r.p.m.)

PowerTransmission
Terminal

ᓘ(d )12 mm䇮ᄖᓘ 17.5 mm䇮䊏䉾䉼(s )㩷3.3 mm䇮ో㐳 824
LiquidH2mm䋨࿶ജ៊ᄬ᷹ቯㇱ 614 mm䋩䈱䉴䊁䊮䊧䉴㍑⵾᳓ᐔ▤䈪䈅䉎䇯਄ᵹ஥ 210 mm 䈲ഥ⿛඙㑆䈫䈚䈩䈇䉎䇯䉮䊦䉭䊷䊃▤䈱ᄖㇱ䈮䈲䇮㊀ജ䈮䉋䉎᠌䉂䈍䉋䈶ᵹേᤨ䈱㈩▤ᝄേ䉕ૐᷫ䈜䉎䈢䉄䇮ౝᓘ 18 mm 䈱࿕ቯ↪ᄖ▤䉕ข䉍ઃ䈔䈩䈇䉎䇯ታ㛎䈱ᵹ

80

Pressure Drop per Unit Length㼺P/L [kPa/m]㧟㧚ታ㛎⚿ᨐ߅ࠃ߮⠨ኤ䉮䊦䉭䊷䊃▤䈱ᵹㅦ䈫࿶ജ៊ᄬ᷹ቯ⚿ᨐ䉕࿑
࿑ 2 䈮␜䈜䇯࿑䈱 Hawthorne 䈱ታ㛎ᑼ䋨▤៺ᡂଥᢙ Ȝ 䈱ᑼ(1)䋩[3]䉕␜䈜䇯㩷
Ǌ

»
»
¼

2

㩷 㱏= 0.438㩷㩿ታ㛎ଥᢙ㪀㩷 㩷 㩷 (1)㩷ᶧ૕⓸⚛䈱࿶ജ៊ᄬ䈲 Prandtl-Karman ᑼ䈱 5䌾9 ୚䈫䈭䈦䈢䇯䉴䊤䉾䉲䊠⓸⚛䈲䇮ᵹㅦ⚂㩷 2 m/s એ਄䈪࿶ജ៊ᄬૐ

䈮␜䈜䇯ᶧ૕⓸⚛䈱▤៺ᡂଥᢙ䈲 Re ᢙ䈏ᄢ䈐䈒䈭䉎䈮䈧䉏䇮tsdPrandtl-Karman
PrandtlͲ Karman

0
0

1

2

3

4

Mean
Velocityvv[m/s][m/s]Mean Velocity

Fig.2 Pressure drop and mean velocity of slush N2.
0.16

Hawthorne 䈱ታ㛎ᑼ䋨৻ቯ୯䋩䈮ㄭ䈨䈒䈏䇮䉴䊤䉾䉲䊠⓸⚛䈲䇮

Ǌ

0.14

䈾䈿৻ቯ୯䉕␜䈚䇮ᦨᄢ䈪⚂ 30%䈱࿶ജ៊ᄬૐᷫ䈏⏕⹺䈘

0.1505

Hawthorne, et al.

Friction Factor 㱗 [-]] 0.12

-[
?
r 0.1
o
tc
a
F 0.08
n
o
tic
0.06
ri
F

䉏䈢䇯⊒⴫⠪䈲ᐔṖ౞▤䇮䈒䈶䉏▤䈮䈩䇮࿶ജ៊ᄬૐᷫലᨐ
䈏ᵹㅦ䈱ᄢ䈐䈇ᡆဋ⾰ᵹ䈪⃻䉒䉏䉎ታ㛎⚿ᨐ䉕ႎ๔䈚䈩䈇䉎
[2,4]䇯䉮䊦䉭䊷䊃▤䈮䈍䈇䈩䉅䇮ᡆဋ⾰ᵹ䈮䈭䉎䈫࿕૕☸ሶ䈏▤ਛᄩㇱ䈮⒖േ䈚䇮ಳಲౝㇱ䈱࿕૕☸ሶ䈱ᢙ䈏ᷫዋ䈜䉎䈖䈫䇮▤ਛᄩㇱ䈱࿕૕☸ሶ⟲䈏ಳಲౝㇱ䈮ሽ࿷䈜䉎ᶧ૕䈱ੂᵹ⊒↢䉕ᛥ೙䈜䉎䈖䈫䈏࿶ജ៊ᄬૐᷫ䈱ⷐ࿃䈫⠨䈋䉌䉏䉎䇯㩷

5-15 wt%
15-25 wt%
25Ͳ30wt%

0.04

Prandtl-Karman
PrandtlͲKarman

0.02

⻢ㄉ

Subcooled LN22 (63 K)
Solid Fraction ( 5-15 wt%)
Solid Fraction (15-25 wt%)
Solid Fraction (25-30 wt%)
Hawthorne and von Helms eq.
Prandtl-Karman eq. [12 mm]0ᧄ⎇ⓥ䈲䇮⑼ቇ⎇ⓥ⾌⵬ഥ㊄䋨ၮ⋚ 㪙㩷 21360091䋩䈮䉋䉍ታᣉ䈚䈢䇯ᄢ㒋䊤䉶䊮▤Ꮏᬺ䊺䈎䉌ᛛⴚ⊛䉮䊜䊮䊃䉕㗂䈇䈢䇯㩷Hawthorne, et al.

10ᷫലᨐ䈏⃻䉒䉏䇮࿕⋧₸䈏ᄢ䈐䈒䈭䉎䈫ૐᷫ㊂䈲ᄢ䈐䈒䈭䉎䇯▤៺ᡂଥᢙ Ȝ 䈫 Reynolds ᢙ䋨ઍ⴫㐳䈘 d 䋩䈱ታ㛎⚿ᨐ䉕࿑
࿑3

Subcooled LN22 (63 K)
Solid Fraction ( 5-15 wt%)
Solid Fraction (15-25 wt%)
Solid Fraction (25-30 wt%)
Hawthorne and von Helms eq.
Subcooled LN22 (63 K)

70
h
tg
n
e ] 60
L m
re /
50
p a
䍃P
p [䍃
o
r L 40
D ٛ/P
er
ٛ 30
su
se
r
P 20

䈮䈲䇮ᐔṖ౞▤䈱 Prandtl-Karman ᑼ䇮䉮䊦䉭䊷䊃▤න⋧ᵹ

2 ºRefrigerant䋺Slush H2

Fig.1 Synergetic effect in combination with slushhydrogen and superconducting power machines.

ㅦ䈲 1.4䌾4.0 m/s䇮࿕⋧₸䈲 0䌾30wt%䈪䈅䉎䇯㩷

§
·
d ª«
d
¸
1  ¨¨s «d  J s ¸¹©
¬

Superconducting Power
Transmission (MgB2)

Fuel for Fuel Cells(Automotive & Residential)
Superconducting Magnetic
Energy Storage (MgB2 SMES)

4

6

8

10

12

14

4] 4]
Reynolds
NumberReRe[㬍10[㬍10
Reynolds Number

Fig.3 Friction factor and Reynolds number of slush N2.

― 206 ―

第82回

2010年度春季低温工学・超電導学会

3D-a03

スラッシュ流体᳓ᐔ౞▤ౝ䉕ᵹ䉏䉎䉴䊤䉾䉲䊠⓸⚛䈱ᵹേ䊶વᾲ․ᕈ䈫ᵹേ᭽ᑼ㩷㪫㪿㪼㫉㫄㫆㪄㪽㫃㫌㫀㪻㩷㪺㪿㪸㫉㪸㪺㫋㪼㫉㫀㫊㫋㫀㪺㫊㩷㪸㫅㪻㩷㪽㫃㫆㫎㩷㫇㪸㫋㫋㪼㫉㫅㫊㩷㫆㪽㩷㫊㫃㫌㫊㪿㩷㫅㫀㫋㫉㫆㪾㪼㫅㩷㪽㫃㫆㫎㩷㫀㫅㩷㪸㩷㪿㫆㫉㫀㫑㫆㫅㫋㪸㫃㩷㫇㫀㫇㪼㩷ਛㄟ㩷 ࿻, 㜞ᯅ㩷 ᐘ৻, ᄢᐔ㩷 ൎ⑲㩷 䋨᧲ർᄢ㩷 ᵹ૕⎇䋩㩷
NAKAGOMI Kei, TAKAHASHI Koichi, OHIRA Katsuhide (Institute of Fluid Science, Tohoku University)
E-mail: knakagomi@luna.ifs.tohoku.ac.jp

D᧶Density Meter
L᧶Level Meter
P᧶Pressure Tap
T᧶Temperature Sensor

VacuumPump

D

Heat Transfer Pipe Visualization Pipe
Main Valve

GHe

L
P

High Speed Camera
T

Catch Tank

Fig.1 Schematic illustration of the experimental apparatus(1)䉰䊑䉪䊷䊦ᶧ૕⓸⚛䈫Ყセ䈚䈩䋬࿶ജ៊ᄬૐᷫ䈫ᾲવ㆐₸ૐਅ䈏䋬䈫䉅䈮ᵹㅦ 2 m/s ઃㄭ䈎䉌⿠䈖䉍ᆎ䉄䈩䈇䉎䋮․䈮䋬࿶ജ៊ᄬૐᷫ䈲䋬ᵹㅦ 2䌾3.5 m/s 䈎䈧࿕⋧₸ 0䌾14 wt%䈱▸࿐䈮䈍䈇䈩⏕⹺䈪䈐䉎䋮㜞ㅦᐲ䉦䊜䊤䈮䉋䉍䋬䈖䈱႐ว䈱ᵹ䉏䈲ᡆဋ⾰ᵹ䈪䈅䉍䋬࿕૕☸ሶ䈲▤ਛᔃㇱઃㄭ䈮㓸ਛ䈚䈩䈇䉎䈖䈫䈏⏕⹺䈘䉏䈢䋮ᵹ䉏䈏ᡆဋ⾰ᵹ䈫䈭䉍䋬࿕૕☸ሶห჻䈱ᐓᷤ䈏ᷫዋ䈜䉎䈫䈫䉅䈮䋬▤ਛᔃㇱઃㄭ䈮㓸ਛ䈚䈢࿕૕☸ሶ⟲䈮䉋䈦䈩ო㕙ㄭற䈪䈱ੂᵹ䈏ᛥ೙䈘䉏䉎䈢䉄䋬࿶ജ៊ᄬ䈏ૐᷫ䈜䉎䈫⠨䈋䉌䉏䉎䋮ᾲવ㆐₸ૐਅ䈮㑐䈚䈩䉅䋬ო㕙ㄭற䈪䈱ੂᵹ䈏ᛥ೙䈘䉏䋬ੂᵹᷙว䈮䉋䉎▤ਛᔃㇱ䈻䈱ᾲ᜛ᢔ䈏ᅹ䈕䉌䉏䉎䈖䈫䈏ⷐ࿃䈮䈭䈦䈩䈇䉎䈫⠨䈋䉌䉏䉎䋮Fig.4 䈮㕖ടᾲᤨ䈮䈍䈔䉎ᵹㅦ䈫࿶ജ៊ᄬᲧ rdP 䈱㑐ଥ䉕␜䈜䋮࿶ജ៊ᄬᲧ䈲䋬䉰䊑䉪䊷䊦ᶧ૕⓸⚛䈱࿶ജ៊ᄬ䈮ኻ䈜䉎䉴䊤䉾䉲䊠⓸⚛䈱࿶ജ៊ᄬ䈪䈅䉎䋮㽲䈲᠁േᵹ䋬㽳䈲㕖ဋ⾰ᵹ䋬㽴䋬㽵䈲ᡆဋ⾰ᵹ䈪䈅䉎䋮ᵹㅦ 2䌾3.5 m/s 䈎䈧࿕⋧₸ 0䌾14 wt%䈱▸࿐䈮䈍䈇䈩࿶ജ៊ᄬૐᷫ䈏⏕⹺䈪䈐䉎䋮
ᵹㅦ 3.5 m/s એ਄䈪䈲䋬ੂᵹ䈱Ⴧട䉇࿕૕☸ሶ䈱ᐓᷤ䈮䉋䉍࿶ജ៊ᄬᲧ䈏 1 䉋䉍ᄢ䈐䈒䈭䈦䈩䈇䉎䈏䋬rdP = 1.1 ⒟ᐲ䈮ẋㄭ䈚䋬ᵹㅦ䈏Ⴧട䈚䈩䉅࿶ജ៊ᄬᲧ䈲Ⴧട䈚䈭䈇䈖䈫䈏ಽ䈎䉎䋮⻢ㄉ㩷ᧄ⎇ⓥ䈲䋬⑼ቇ⎇ⓥ⾌⵬ഥ㊄䋨ၮ⋚ B 21360091䋩䈮䉋䉍ታ
ᣉ䈚䈢䋮㩷
ෳ⠨ᢥ₂㩷
[1] K. Ohira: Jpn. J. Multiphase Flow, 23(2009) pp.373-380.

― 207 ―

550

ǻP

P
㱢10

P

T

T

T

600

125

50

800
1025

Fig.2 Details of the heat transfer pipe
10

2

40

Prandtl-Karman Eq. Fitted Curve (subcooled)subcooled
0-7 [wt%]
7-14 [wt%]14-21 [wt%]21-28 [wt%]

9
8
7

35
30
25

6
5

20

4

15

3

10

2

Fitted Curve (subcooled)Pressure Drop ǻP/L [kPa/m]

q Twall  Tbulk

Run Tank

T

Heat Transfer Coefficient h [kW/m K]

h

P

5

1
0

0
0

1

2

3

4

Mean Velocity u mean [m/s]56

㩷Fig.3 Pressure drop and local heat transfer coefficient ofslush N2 (q = 10 kW/m2)
10

Pressure Drop Ratio rdP = ǻPsl /ǻPsub [-]㪈㪅㩷 䈲䈛䉄䈮㩷ᶧ૕ਛ䈮หᚑಽ䈱࿕૕☸ሶ䈏౒ሽ䈜䉎ᭂૐ᷷࿕ᶧੑ⋧䉴䊤䉾䉲䊠ᵹ૕䈲䋬⾂⬿䊶ャㅍ䈮ఝ䉏䈩䈍䉍䋬Άᢱ㔚ᳰ䈱Άᢱ䋬㜞᷷⿥વዉ૕䈱಄ᇦ䋬ቝቮ䊨䉬䉾䊃䈱Άᢱ䈭䈬䈫䈚䈩೑↪䈏᦭ᦸⷞ䈘䉏䈩䈇䉎䋮䉴䊤䉾䉲䊠⓸⚛䈮䈍䈇䈩䈲䋬ౝᓘ 15 mm 䈱᳓ᐔ౞▤ౝ䉕ᵹേ䈜䉎㓙䈱࿶ജ៊ᄬૐᷫ䈏ႎ๔䈘䉏䈩䈇䉎[1]䋮䈠䈖䈪ᧄ⎇ⓥ䈪䈲䋬䉴䊤䉾䉲䊠⓸⚛䉕↪䈇䈩䋬ౝᓘ 10 mm
䈱᳓ᐔવᾲ౞▤ౝ䉕ᵹേ䈜䉎㓙䈱ᵹേ䊶વᾲ․ᕈ䈱ᛠី䉕ⴕ䈦䈢䋮䉁䈢䋬㜞ㅦᐲ䉦䊜䊤䈮䉋䉎ᵹേ᭽ᑼ䈱᷹ⷰ䉕ⴕ䈇䋬ᵹേ䊶વᾲ․ᕈ䈫ᵹേ᭽ᑼ䈱㑐ଥᕈ䈮䈧䈇䈩ᬌ⸛䉕ⴕ䈦䈢䋮㪉㪅㩷 ታ㛎ⵝ⟎䈍䉋䈶ታ㛎ᣇᴺ㩷ታ㛎ⵝ⟎䈱᭎⇛࿑䉕 Fig.1 䈮␜䈜䋮ታ㛎ⵝ⟎䈲䋬䉴䊤䉾䉲䊠⓸⚛䉕⵾ㅧ䊶⾂⬿䈜䉎䊤䊮䉺䊮䉪䋬ᵹേ䊶વᾲ․ᕈ䉕⸘᷹䈜䉎વᾲ⹜㛎ㇱ䋬ᵹേ᭽ᑼ䉕᷹ⷰ䈜䉎นⷞൻㇱ䋬䉨䊞䉾䉼䉺䊮䉪䈎䉌᭴ᚑ䈘䉏䉎䋮 Fig.2 䈮વᾲ⹜㛎ㇱ䈱⹦⚦䉕␜䈜䋮વᾲ⹜㛎ㇱ䈲䋬ౝᓘ 10 mm 䈱㌃⵾᳓ᐔ౞▤䈪䈅䉍䋬▤ᄖო 800 mm䈮ᷰ䈦䈩Ꮞ䈎䉏䈢䊆䉪䊨䊛✢䈮䉋䉍৻ቯ䈱ᾲᵹ᧤䉕ශട䈜䉎䋮࿶ജข಴䈚ญ䉕⸳䈔䋬550 mm 䈱඙㑆䈮䈍䈔䉎࿶ജ៊ᄬ䉕⸘᷹䈜䉎䋮䉁䈢䋬▤ౝ 2 䉬ᚲ䈱᷷ᐲ䉶䊮䉰䈪䊋䊦䉪᷷ᐲ䉕⸘᷹䈚䋬ടᾲ㐿ᆎὐ䈎䉌 600 mm ਅᵹ䈱▤ਅㇱ䈮⸳⟎䈘䉏䈢᷷ᐲ䉶䊮䉰䈪ო㕙᷷ᐲ䉕⸘᷹䈜䉎䋮ታ㛎᧦ઙ䈲䋬ᵹㅦ 0.16䌾5.2 m/s䋬࿕⋧₸ 2.38䌾31.8 wt%䋬ᾲᵹ᧤ 0䋬10䋬30 kW/m2 䈪䈅䉎䋮㪊㪅㩷 ታ㛎⚿ᨐ䈍䉋䈶⠨ኤ㩷
Fig.3 䈮ᾲᵹ᧤ 10 kW/m2 䈮䈍䈔䉎ᵹㅦ䈫࿶ജ៊ᄬ䈍䉋䈶ዪᚲᾲવ㆐₸䈱㑐ଥ䉕␜䈜䋮ዪᚲᾲવ㆐₸ h 䈲䋬ᾲᵹ᧤ q䋬ო㕙᷷ᐲ Twall䋬䊋䊦䉪᷷ᐲ Tbulk 䈎䉌ᰴᑼ䈪᳞䉄䉌䉏䉎䋮

subcooled
0-7 [wt%]
7-14 [wt%]14-21 [wt%]21-28 [wt%]28-35 [wt%]

Ԙ
ԙ

1

ԛ

Ԛ

0.1
0

1

2

3

4

5

6

Mean Velocity u mean [m/s]Fig.4 Pressure drop ratio and mean velocity of slush N2(q = 0 kW/m2)

第82回

2010年度春季低温工学・超電導学会

3D-a04

スラッシュ流体水平円管内を流動するスラッシュ窒素の流動᳓ᐔ౞▤ౝࠍ
ࠍᵹേߔࠆ
વᾲ․ᕈߦ
᳓ᐔ౞▤ౝ
ᵹേߔࠆࠬ࡜࠶ࠪࡘ
ߔࠆࠬ࡜࠶ࠪࡘ⓸⚛
ࠬ࡜࠶ࠪࡘ⓸⚛ߩ⓸⚛ߩᵹേ࡮
ᵹേ・࡮伝熱特性に関する数値解析
વᾲ․ᕈߦ㑐ߔࠆᢙ୯⸃ᨆ
ߔࠆᢙ୯⸃ᨆ
ᢙ୯⸃ᨆ
Numerical study of ﬂow and heat transfer characteristics of slush nitrogen ﬂows in a horizontal pipe 㩷㪥㫌㫄㪼㫉㫀㪺㪸㫃㩷㫊㫋㫌㪻㫐㩷㫆㪽㩷㪽㫃㫆㫎㩷㪸㫅㪻㩷㪿㪼㪸㫋㩷㫋㫉㪸㫅㫊㪽㪼㫉㩷㪺㪿㪸㫉㪸㪺㫋㪼㫉㫀㫊㫋㫀㪺㫊㩷㫆㪽㩷㫊㫃㫌㫊㪿㩷㫅㫀㫋㫉㫆㪾㪼㫅㩷㪽㫃㫆㫎㫊㩷㫀㫅㩷㪸㩷㪿㫆㫉㫀㫑㫆㫅㫋㪸㫃㩷㫇㫀㫇㪼㩷㪥㫌㫄㪼㫉㫀㪺㪸㫃㩷㫊㫋㫌㪻㫐㩷㫆㪽㩷㪽㫃㫆㫎㩷㪸㫅㪻㩷㪿㪼㪸㫋㩷㫋㫉㪸㫅㫊㪽㪼㫉㩷㪺㪿㪸㫉㪸㪺㫋㪼㫉㫀㫊㫋㫀㪺㫊㩷㫆㪽㩷㫊㫃㫌㫊㪿㩷㫅㫀㫋㫉㫆㪾㪼㫅㩷㪽㫃㫆㫎㫊㩷㫀㫅㩷㪸㩷㪿㫆㫉㫀㫑㫆㫅㫋㪸㫃㩷㫇㫀㫇㪼ᄥ↰ᢕੱ‫ޔ‬ᨋᔃᐔ‫ޔ‬ᄢᐔൎ⑲㧔᧲ർᄢ㧕
27$$WVXKLWR+$<$6+,6KLPSHL2+,5$.DWVXKLGH 7RKRNX8QLYHUVLW\ (PDLORKWD#OXQDLIVWRKRNXDFMS

ෳ⠨ᢥ₂
参考文献
ෳ⠨ᢥ₂

䋱
䋮䈲䈛䉄䈮㩷
䈲䈛䉄䈮
1．
はじめに㩷

ᶧ૕ᚑಽਛߦหᚑಽߩ࿕૕☸ሶ߇ሽ࿷ߔࠆᭂૐ᷷࿕ᶧ

>@.2KLUD-&U\R6RF-SQ  SS

ੑ⋧ࠬ࡜࠶ࠪࡘᵹ૕ߪ‫ޔ‬࿕૕☸ሶߩሽ࿷ߦࠃࠅ㜞ኒᐲᵹ૕>@.2KLUDHWDO$EVWUDFWVRI&6-&RQI  Sߣߒߡ‫⸃Ⲣޔ‬ᾲࠍ೑↪ߔࠆᯏ⢻ᕈᾲᵹ૕ߣߒߡఝࠇߚ․ᕈ

>@<0XNDLHWDO$EVWUDFWVRI&6-&RQI  S

ࠍᜬߞߡ߅ࠅ‫⴫⊒ޔ‬⠪ࠄߦࠃࠅࠬ࡜࠶ࠪࡘ᳓⚛ࠍ೑↪ߒߚ>@.2KLUDHWDO$GY&U\R(QJ  SS

㜞ല₸᳓⚛ࠛࡀ࡞ࠡ࡯ࠪࠬ࠹ࡓ߇ឭ᩺ߐࠇߡ޿ࠆ>@‫ޕ‬>@.2KLUDHWDO3URFRI,&(&  SS

೨ႎ>@ߢߪ‫▤ߩ⚛⓸ࡘࠪ࠶࡜ࠬޔ‬ౝᵹേ․ᕈࠍႎ๔ߒ

ߚ‫⎇ᧄޕ‬ⓥߢߪ‫ޔ‬વᾲࠍ⠨ᘦߒߚࠬ࡜࠶ࠪࡘᵹ૕ߩᵹേ․ᕈࠍᛠីߔࠆߚ߼‫ޔ‬ᾲ㕖ᐔⴧੑᵹ૕ࡕ࠺࡞ߦၮߠߊਃᰴర

2ULJLQ ' PP

<

<

;
=

/ PP;=ᾲ․ᕈߦߟ޿ߡ⸃ᨆࠍⴕߞߚ‫ޕ‬)LJ&RPSXWDWLRQDOPRGHOIRUQXPHULFDODQDO\VLV 


⸃ᨆᣇᴺߦߟ޿ߡߪ‫ޔ‬೨ႎ>@ߦ␜ߔ‫ࡘࠪ࠶࡜ࠬޕ‬ᵹ૕

/1 T N:P/1 T N:P
6/1 T N:P䂔 6/1 T N:P䂦 6/1 T N:P 䂾

3UHVVXUHGURS㼺3/ >3DP@

2．
解析方法および計算条件
䋲䋮⸃ᨆᣇᴺ䈍䉋䈶
䈍䉋䈶⸘▚᧦ઙ
⸃ᨆᣇᴺ
䈍䉋䈶⸘▚᧦ઙ
⸘▚᧦ઙ䂺

䃂ߩ࿶ജ៊ᄬૐᷫലᨐ>@ߦߟ޿ߡߪ‫ޔ‬⠨ᘦߒߥ޿‫⸃ޕ‬ᨆߦ 

૶↪ߒߚ౞▤ࡕ࠺࡞㧔▤ౝᓘ ' PP‫〝▤ޔ‬㐳 / 



PP㧕ࠍ )LJ ߦ␜ߔ‫✚ޕ‬ᩰሶᢙߪ  ߢ޽ࠆ‫ޔߚ߹ޕ‬౉ญᵹㅦࠍ 8LQ 㨪PV‫ޔ‬૕Ⓧ࿕⋧₸ǩV YRO‫ޔ‬ 
☸ሶᓘࠍ PP>@ߣߒߚ‫ޔߦࠄߐޕ‬ᾲᵹ᧤ࠍ T 



N:P ߣߒߚ‫ޕ‬䋳䋮⸃ᨆ⚿ᨐ䈍䉋䈶
䈍䉋䈶⠨ኤ
3．
解析結果および考察⸃ᨆ⚿ᨐ䈍䉋䈶⠨ኤ
⠨ኤ

6XEFRROHG /1 ([SHULPHQWT N:P

3UDQGWO.DUPDQ(T

/RFDOKHDWWUDQVIHUFRHIILFLHQWK >:P䊶.@ᵹേ⸃ᨆࠦ࡯࠼ࠍ㐿⊒ߒ‫▤ߩ⚛⓸ࡘࠪ࠶࡜ࠬޔ‬ౝᵹേ࡮વ



/   PP ߩ࿾ὐߦ߅ߌࠆቯᏱ⁁ᘒ⸃ߦߟ޿ߡ⠨ኤߒߚ‫)ޕ‬LJ  ߦ౉ญᵹㅦ 8LQ ߦኻߔࠆࠬ࡜࠶ࠪࡘ⓸⚛ߩ࿶ജ៊ᄬߣᾲવ㆐₸ࠍ␜ߔ‫ޕ‬㕖ടᾲߩࠨࡉࠢ࡯࡞ᶧ૕⓸⚛ߩ࿶

)LJ  3UHVVXUH GURS DQG ORFDO KHDW WUDQVIHU FKDUDFWHULVWLFV RI

ജ៊ᄬߪ‫ޔ‬3UDQGWO.DUPDQ ታ㛎ᑼߣ⦟ߊ৻⥌ߒߡ޿ࠆ‫ࠬޕ‬













,QOHWYHORFLW\8LQ >PV@Ⴧടߦ઻ߞߡ࿶ജ៊ᄬ߇Ⴧᄢߒߡ޿ࠆ‫ޔߪࠇߎޕ‬࿕⋧ߣᶧ⋧ߩᐓᷤߦࠃࠅੂᵹ߇Ⴧടߔࠆᓇ㗀ߣታലേ☼ᕈଥᢙ߇Ⴧടߒߡო㕙ߣߩ៺ᡂߩᓇ㗀ࠍᄢ߈ߊฃߌࠆߚ߼ߣ⠨߃ࠄࠇࠆ‫ޕ‬ടᾲ㊂ߩ㆑޿ߦࠃࠆ࿶ജ៊ᄬߦᏅ߇ߥ޿ߩߪ‫੹ޔ‬࿁ߩ⸃ᨆߢߪ‛ᕈ୯ߦਃ㊀ὐ᷷ᐲߩ୯ࠍ↪޿ߡ৻ቯߣߒ

ߚߚ߼ߣ⠨߃ࠄࠇ‫੹ޔ‬ᓟ‛ᕈ୯ߩ᷷ᐲᄌൻࠍᢙ୯⸃ᨆࡊࡠ

ࠣ࡜ࡓߦ⚵ߺㄟ߻‫)ޕ‬LJ ਛߩታ✢ߪ‫ޔ‬ᾲᵹ᧤ T N:P:DOOWHPSDUDWXUH
7ZDOO>.@ >.@:DOOWHPSHUDWXUHERWWRP7ZDOOVOXVKQLWURJHQZLWKWKHLQOHWYHORFLW\8LQ࡜࠶ࠪࡘ⓸⚛ߢߪ‫࡞࡯ࠢࡉࠨޔ‬ᶧ૕⓸⚛ߣᲧセߒߡᵹㅦߩ

ߩ႐วߩࠨࡉࠢ࡯࡞ᶧ૕⓸⚛ߩᾲવ㆐₸ߩታ㛎⚿ᨐ>@ࠍ

([SHULPHQWT
1XPHULFDOT([SHULPHQWT䂦 1XPHULFDOT
䂹



䂺
䂥




N:P
N:P
N:P
N:P

T N:P



T N:P









,QOHWYHORFLW\8LQ>PV@

D :DOOWHPSHUDWXUH ERWWRP 7ZDOOߒߡ޿ࠆ‫ߩ⚛⓸ࡘࠪ࠶࡜ࠬޔߦࠄߐޕ‬ታ㛎⚿ᨐ>@ߣᢙ୯⸃ᨆ⚿ᨐߩ᷷ᐲߩᲧセ )LJ  ߽‫▤ޔ‬ო᷷ᐲ㧔ᐩ㕙㧕7ZDOO߅ࠃ߮ࡃ࡞᷷ࠢᐲ 7EXON ߪ౉ญᵹㅦ 8LQ PV ߩ㜞ᾲᵹ᧤᧦ઙ T N:P ࠍ㒰޿ߡ⦟ߊ৻⥌ߒߡ޿ࠆ‫ᧄޕ‬ᢙ୯⸃ᨆߢߪૐᵹㅦ㗔ၞߢߩ㕖ဋ⾰ᵹߩᵹേ᭽ᑼࠍචಽߦౣ⃻ߢ߈ߡ޿ߥ޿ߣ⠨߃ࠄࠇࠆߚ߼‫▤ޔ‬ო᷷ᐲ 7ZDOO ߣࡃ࡞ࠢ

᷷ᐲ 7EXON ߩ᷷ᐲᏅ߇ᄢ߈ߊߥࠅ‫ޔ‬ᾲવ㆐₸߇ዊߐߊߥߞ

ߚߣ⠨߃ࠄࠇ‫੹ޔ‬ᓟߩᬌ⸛ߦࠃࠅࡊࡠࠣ࡜ࡓࠍᡷ⦟ߔࠆ‫ޕ‬



謝辞
⻢ㄉ
⻢ㄉ



([SHULPHQWT
1XPHULFDOT([SHULPHQWT䂦 1XPHULFDOT䂹

%XONWHPSDUDWXUH7EXON >.@␜ߒߡ߅ࠅ‫ޔ‬ᢙ୯⸃ᨆ⚿ᨐߪૐᵹㅦ᧦ઙࠍ㒰޿ߡ⦟ߊ৻⥌







䂺
䂥



N:P
N:P
N:P
N:P

T N:P






T N:P













,QOHWYHORFLW\ 8LQ>PV@

E %XONWHPSHUDWXUH7EXON ᧄ⎇ⓥߩ৻ㇱߪ‫⑼ޔ‬ቇ⎇ⓥ⾌⵬ഥ㊄㧔ၮ⋚ %㧕

)LJ&RPSDULVRQEHWZHHQWKHH[SHULPHQWDODQGWKHQXPHULFDOߦࠃࠅታᣉߒߚ‫ޕ‬

WHPSHUDWXUHV― 208 ―

第82回

2010年度春季低温工学・超電導学会

3D-a05

スラッシュ流体㧗㏿ᗘ䜹䝯䝷䛻䜘䜛䝇䝷䝑䝅䝳❅⣲䠄䜸䞊䜺ἲ䠅䛾⢏Ꮚᚄィ㻌㻹㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼛㼒㻌㻰㼕㼍㼙㼑㼠㼑㼞㼟㻌㼛㼒㻌㻿㼘㼡㼟㼔㻌㻺㼕㼠㼞㼛㼓㼑㼚㻌㻼㼍㼞㼠㼕㼏㼘㼑㼟㻌 䠄㼎㼥㻌㼠㼔㼑㻌㻭㼡㼓㼑㼞㻌㻹㼑㼠㼔㼛㼐䠅㻌㻌 㼡㼟㼕㼚㼓㻌㻴㼕㼓㼔㻙㼟㼜㼑㼑㼐㻌㻼㼔㼛㼠㼛㼓㼞㼍㼜㼔㼥㻌㥖㎸㻌 ᩄᘯ䠈௰ᮧ㻌 ┤Ꮚ䠈኱㔝㻌 㝯௓䠈ụෆ㻌 ṇ඘䠈▮ཱྀ㻌 ᗈᬕ䠈⏫⏣㻌 ᫂Ⓩ䠄๓ᕝ䠅㻌㻷㻻㻹㻭㻳㻻㻹㻱㻌㼀㼛㼟㼔㼕㼔㼕㼞㼛䠈㻺㻭㻷㻭㻹㼁㻾㻭㻌㻺㼍㼛㼗㼛㻘㻌㻻㻺㻻㻌㻾㼥㼡㼟㼡㼗㼑㻘㻌 㻌㻾㼑㼘㼍㼠㼕㼢㼑㻌㻲㼞㼑㼝㼑㼚㼏㼥㻾㼑㼘㼍㼠㼕㼢㼑㻌㻲㼞㼑㼝㼑㼚㼏㼥㻵㻷㻱㼁㻯㻴㻵㻌㻹㼍㼟㼍㼙㼕㼠㼟㼡㻘㻌㼅㻭㻳㼁㻯㻴㻵㻌㻴㼕㼞㼛㼔㼍㼞㼡㻘㻌㻹㻭㻯㻴㻵㻰㻭㻌㻭㼗㼕㼠㼛㻌㻔㻹㼍㼥㼑㼗㼍㼣㼍㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼠㼛㼟㼔㼕㼔㼕㼞㼛㻙㼗㼛㼙㼍㼓㼛㼙㼑㻬㼙㼍㼥㼑㼗㼍㼣㼍㻚㼏㼛㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌
ㅰ㎡㻌
䝇䝷䝑䝅䝳ὶయ䛸䛿䚸ྠ୍ᡂศ䛾ᅛయ⢏Ꮚ䛸ᾮయ䛜ΰྜ䛧ᮏ◊✲䛿䚸⊂❧⾜ᨻἲே᪂䜶䝛䝹䜼䞊䞉⏘ᴗᢏ⾡⥲ྜ㛤䛯஧┦ὶయ䜢ᣦ䛩䚹㧗 ㉸㟁ᑟ䠄௨ୗ䚸㻴㼀㻿䠅䜿䞊䝤䝹䝅䝇䝔Ⓨᶵᵓ䠄㻺㻱㻰㻻 ᢏ⾡㛤Ⓨᶵᵓ䠅䛾䝥䝻䝆䜵䜽䝖䛂䜲䝑䝖䝸䜴䝮⣔䝮䛾෭፹䛻䝇䝷䝑䝅䝳❅⣲䠄௨ୗ䚸㻿㻺㻞 䠅䜢⏝䛔䜛䛸䚸䝃䝤䜽䞊㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ䛃䛾୍⎔䛸䛧䛶ᐇ᪋䛧䛯䚹㧗㏿ᗘ䜹䝹ᾮయ❅⣲䛸ẚ䜉 ᗘ䛜ప䛟䛷䛝䚸䜎䛯ᅛయ⼥ゎ₯⇕䜢෭༷䝯䝷䛻䜘䜛⢏Ꮚ᧜ᙳ䛺䜙䜃䛻⏬ീゎᯒ䛻䛿䚸⟃Ἴ኱Ꮫ㧗⏣ຓ䛻฼⏝䛷䛝䜛฼Ⅼ䛜䛒䜛䚹㻴㼀㻿 䜿䞊䝤䝹䝅䝇䝔䝮䠄᝿ᐃὶ㏿ᩍ䛾༠ຊ䜢㡬䛔䛯䚹㻌㻜㻚㻞䡚㻜㻚㻟㼙㻛㼟㼑㼏䠅䛻 㻿㻺㻞 䜢⏝䛔䜛ሙྜ䚸ᆒ୍䛺ὶ䜜䛻䛩䜛䛯䜑㻌䛻 㻿㻺㻞 䛾ᅛయ⢏Ꮚ┤ᚄ䜢 㻝㻜㻜䃛㼙 ௨ୗ䛻䛩䜛ᚲせ䛜䛒䜛㼇㻝㼉䚹ཧ⪃ᩥ⊩㻌ᮏሗ࿌䛷䛿䚸䜸䞊䜺ἲ䜢⏝䛔䛯 㻿㻺㻞 ⏕ᡂ⿦⨨䜢〇స䛧䚸⏕ᡂ㼇㻝㼉ᰴᘧ఍♫๓ᕝ〇సᡤ䚸ᖹᡂ 㻞㻜 ᖺᗘ 㻺㻱㻰㻻 ୰㛫ᖺሗ㻌 䜲䝑䛧䛯 㻿㻺㻞 䛻䛚䛔䛶ᅛయ❅⣲⢏Ꮚ䛾⢏ᚄ䛸䛭䛾ศᕸ䜢ィ 䛧䛯䝖䝸䜴䝮⣔㉸㟁ᑟ㟁ຊᶵჾᢏ⾡㛤Ⓨ㻌 ㉸㟁ᑟ䜿䞊䝤䝹ᢏ䛾䛷ሗ࿌䛩䜛䚹㻌
⾡㛤Ⓨ㻌 ෭༷䝅䝇䝔䝮ᢏ⾡㛤Ⓨ㻌㻌㼇㻞㼉㻺㻚㻌㻺㼍㼗㼍㼙㼡㼞㼍㻘㻌㼑㼠㻌㼍㼘㻚㻦㻌㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌㻯㻿㻶㻌㼏㼛㼚㼒㼑㼞㼑㼚㼏㼑㻘㻌㼂㼛㼘㻚㻌㻤㻜㻌㻞䠊 ᐃ᪉ἲ㻌 䛚䜘䜃㻌 ⤖ᯝ㻌㻔㻞㻜㻜㻥㻕㻌㼜㻚㻢㻠㻌ほ ᑐ㇟䛸䛺䜛 㻿㻺㻞 䛿䚸᫖ᖺሗ࿌䛧䛯䜸䞊䜺ἲ䛻䜘䜛⿦⨨㻌䜢⏝䛔䛶⏕ᡂ䛧䛯㼇㻞㼉䚹䛣䛾⿦⨨䛿ప ᵴෆ㒊䛾ᾮయ❅⣲䜢⇕஺᥮ჾ⾲㠃䛷෭༷ཬ䜃ᅛ໬䛥䛫䚸⏕䛨䛯ᅛయ❅⣲⭷䜢ᅇ㌿㐠ື䛩䜛䝤䝺䞊䝗䛜ᥙ䛝ྲྀ䜛䛣䛸䛷䚸ᅛయ❅⣲⢏Ꮚ䜢⏕ᡂ䛩䜛䚹⢏Ꮚ䛿ᾮయ❅⣲䜘䜚䜒ẚ㔜䛜኱䛝䛔䛾䛷⼺᪕㐠ື䛧䛺䛜䜙ỿ㝆䛧䚸ప ᵴᗏ㒊䛻ሁ✚䛩䜛䚹⇕஺᥮ჾୗ㒊䛻䛿ほᐹ❆䛜䛒䜚䚸ప ᵴෆ䜢㐠ື䛩䜛⢏Ꮚ䛾ᵝᏊ䜢ほ 䛩䜛䛣䛸㻝㼙㼙 㻌䛜䛷䛝䜛䚹㻌
㻲㼕㼓㻚㻝㻌㻻㼎㼟㼑㼞㼢㼑㼐㻌㻿㻺㻞㻌㼜㼍㼞㼠㼕㼏㼘㼑㼟㻌㻌 ⏕ᡂ䛧䛯ᅛయ❅⣲⢏Ꮚ䜢䚸䝔䝺䝉䞁䝖䝸䝑䜽䝺䞁䝈௜䛝㧗㏿ᗘ䜹䝯䝷䛷ほᐹ❆䛛䜙᧜ᙳ䛧䛯䚹⏬ീ䛾୍౛䜢 㻲㼕㼓㻚㻝 䛻♧䛩䚹㻌୍䛴䛾⏬ീ䛻䛴䛝ᩘಶ䛛䜙ᩘ༑ಶ䛾⢏Ꮚ䜢☜ㄆ䛧䛯䚹䜎䛯䚸㻜㻚㻞䞉㻺㼡㼙㼎㼑㼞㻌㼛㼒㻌㻻㼎㼟㼑㼞㼢㼑㼐㻌㻼㼍㼞㼠㼕㼏㼘㼑㼟㻌㻦㻌㻞㻡㻝㐠㌿䛩䜛᮲௳䛻䜘䛳䛶䛿኱䛝䛔ⷧ⭷≧䛾ᅛయ❅⣲䜔䚸⢏Ꮚ䞉㻼㼍㼞㼠㼕㼏㼘㼑㻌㻰㼕㼍㼙㼑㼠㼑㼞䛜ᐤ䜚㞟䜎䛳䛯䜽䝷䝇䝍䞊≧䛾⢏Ꮚ⩌䜒ほᐹ䛥䜜䛯䚹㻌㻌㻌㻌㻌㻌㻌㻌㻌㻹㼑㼐㼕㼍㼚㻌㻦㻌㻞㻝㻟㻌䃛㼙⢏Ꮚ䛾኱䛝䛥䛿䚸᧜ᙳ⏬ീୖ䛷䛾ᢞᙳ㠃✚䛛䜙௨ୗ䛾ᡭ㻌㻌㻌㻌㻌㻌㻌㻌㼃㼑㼕㼓㼔㼠㼑㼐㻌㻭㼢㼑㼞㼍㼓㼑㻌㻦㻌㻞㻣㻠㻌䃛㼙㡰䛷ồ䜑䛯䚹䜎䛪䚸᧜ᙳ䛧䛯⏬ീ䛾䛖䛱᫬㛫ⓗ䛻䝷䞁䝎䝮䛺⏬
㻌㻌㻌㻌㻌㻌㻌㻌㻿㼠㼍㼚㼐㼍㼞㼐㻌㻰㼑㼢㼕㼍㼠㼕㼛㼚㻌㻦㻌㻞㻝㻝㻌䃛㼙㻜㻚㻝ീ䜢ᢳฟ䛧䛶⢏Ꮚ䛾ᢞᙳ㠃✚䜢ィ 䛩䜛䚹ḟ䛻ᢞᙳ㠃✚䛸➼౯䛺෇䛾┤ᚄ䠄෇┦ᙜ┤ᚄ䠅䜢⟬ฟ䛧䚸⤫ィⓗ䛻䜎䛸䜑䛯䚹䛯䛰䛧䚸 ᐃศゎ⬟䛻㝈⏺䛜䛒䜚 㻠㻜䃛㼙 ௨ୗ䛾⢏Ꮚ䛻䛴䛔䛶䛿 ᐃ䛧䛶䛔䛺䛔䚹኱䛝䛔ⷧ⭷≧䛾ᅛయ䛿ᩘ䛜ᑡ䛺䛔䛯䜑䚸ᐃ䛛䜙㝖እ䛧䛯䚹䜎䛯䚸䜽䝷䝇䝍䞊≧䛾⢏Ꮚ⩌䛿⢏Ꮚ䛾ᢞᙳ㻜㠃✚䜢ồ䜑䜛䛣䛸䛜ฟ᮶䛺䛔䛾䛷䚸 ᐃ䛛䜙㝖እ䛧䛯䚹㻌㻜㻞㻜㻜 㻠㻜㻜 㻢㻜㻜 㻤㻜㻜 㻝㻜㻜㻜 㻝㻞㻜㻜 㻝㻠㻜㻜௨ୖ䛾䜘䛖䛻 㻞㻡㻜 ಶ⛬ᗘ䛾⢏Ꮚ䜢ゎᯒ䛧䚸⢏Ꮚᚄศᕸ䜢ồ㻱㼝㼡㼕㼢㼍㼘㼑㼚㼠㻌㻰㼕㼍㼙㼑㼠㼑㼞㻌㻔䃛㼙㻕㻌䜑䛯䚹ᥙ䛝ྲྀ䜚㏿ᗘ 㻝㻣㼞㼜㼙䚸㻝㻜㻜㼞㼜㼙 䛻䛚䛡䜛⢏Ꮚᚄ䛾ศᕸ䜢㻲㼕㼓㻚㻞㻌㻼㼞㼛㼎㼍㼎㼕㼘㼕㼠㼥㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼛㼎㼟㼑㼞㼢㼑㼐㻌㻿㻺㻞㻌㼜㼍㼞㼠㼕㼏㼘㼑㼟㻌 㼣㼕㼠㼔㻌䛭䜜䛮䜜 㻲㼕㼓㻚㻞䚸㻲㼕㼓㻚㻟 䛻♧䛩䚹௦⾲ⓗ䛺኱䛝䛥䜢᭱㢖ᗘ䜽䝷䝇䚸㼞㼛㼠㼍㼠㼕㼛㼚㼍㼘㻌㼟㼜㼑㼑㼐㻌㻝㻣㼞㼜㼙㻌୰ኸ್䛷ホ౯䛩䜛䚹᭱㢖ᗘ䜽䝷䝇䛿䚸㻝㻣㼞㼜㼙㻌 䛾ሙྜ 㻤㻜䡚㻝㻜㻜㻌䃛㼙䚸㻝㻜㻜㼞㼜㼙 䛷 㻠㻜䡚㻢㻜䃛㼙 䛷䛒䛳䛯䚹ᚄ䛾୰ኸ್䛿 㻝㻣㼜㼙 䛾㻜㻚㻞䛸䛝 㻞㻝㻟䃛㼙䚸㻝㻜㻜㼞㼜㼙 䛷䛿 㻝㻝㻥䃛㼙 䛷䛒䛳䛯䚹㻠㻜䃛㼙 ௨ୗ䛾ศ䞉㻺㼡㼙㼎㼑㼞㻌㼛㼒㻌㻻㼎㼟㼑㼞㼢㼑㼐㻌㻼㼍㼞㼠㼕㼏㼘㼑㼟㻌㻦㻌㻞㻢㻝䞉㻼㼍㼞㼠㼕㼏㼘㼑㻌㻰㼕㼍㼙㼑㼠㼑㼞ᕸ䛜Ḟⴠ䛧䛶䛔䜛Ⅼ䜢⪃៖䛩䜛ᚲせ䛜䛒䜛䛜䚸୰ኸ್䚸᭱㢖㻌㻌㻌㻌㻌㻌㻌㻌㻹㼑㼐㼕㼍㼚㻌㻦㻌㻝㻝㻥㻌䃛㼙ᗘ䜽䝷䝇ඹ䛻ᥙ䛝ྲྀ䜚㏿ᗘ䛾ୖ᪼䛻䜘䜚್䛜ᑠ䛥䛟䛺䛳䛯䚹䛣䛾㻌㻌㻌㻌㻌㻌㻌㻌㼃㼑㼕㼓㼔㼠㼑㼐㻌㻭㼢㼑㼞㼍㼓㼑㻌㻦㻌㻝㻥㻡㻌䃛㼙⤖ᯝ䛛䜙䚸ᥙ䛝ྲྀ䜚㏿ᗘ䜢ኚ᭦䛩䜛䛣䛸䛷⢏Ꮚ䛾኱䛝䛥䜢ไᚚ㻌㻌㻌㻌㻌㻌㻌㻌㻿㼠㼍㼚㼐㼍㼞㼐㻌㻰㼑㼢㼕㼍㼠㼕㼛㼚㻌㻦㻌㻞㻜㻠㻌䃛㼙䛩䜛䛣䛸䛜ྍ⬟䛷䛒䜛䛣䛸䜢ᐃ㔞ⓗ䛻ᢕᥱ䛧䛯䚹㻌㻜㻚㻝㻌㻟䠊䜎䛸䜑㻌
䜸䞊䜺ἲ䛻䜘䜛 㻿㻺㻞 ⏕ᡂ⿦⨨䛾ᅛయ❅⣲⢏Ꮚ䜢㧗㏿᧜ᙳἲ䛻䜘䜚ほ 䛧䚸⢏Ꮚᚄ䛾ศᕸ䜢 ᐃ䛧䛯䚹ほ 䛥䜜䛯⢏Ꮚ㻜ᚄศᕸ䛾᭱㢖ᗘ䜽䝷䝇䛿䚸┠ᶆ䛸䛩䜛⢏ᚄ䠄㻝㻜㻜䃛㼙䠅௨ୗ䛷䛒㻜㻞㻜㻜 㻠㻜㻜 㻢㻜㻜 㻤㻜㻜 㻝㻜㻜㻜 㻝㻞㻜㻜 㻝㻠㻜㻜䜛䛣䛸䜢᫂䜙䛛䛻䛧䛯䚹䜎䛯䚸䝤䝺䞊䝗䛾ᥙ䛝ྲྀ䜚㏿ᗘ䛾ㄪᩚ䛻㻱㼝㼡㼕㼢㼍㼘㼑㼚㼠㻌㻰㼕㼍㼙㼑㼠㼑㼞㻌㻔䃛㼙㻕㻌䜘䜚⢏Ꮚᚄ䜢ไᚚ䛧䛖䜛䛣䛸䜢☜ㄆ䛧䛯䚹㻌㻲㼕㼓㻚㻟㻌㻼㼞㼛㼎㼍㼎㼕㼘㼕㼠㼥㻌㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌㼛㼒㻌㼛㼎㼟㼑㼞㼢㼑㼐㻌㻿㻺㻞㻌㼜㼍㼞㼠㼕㼏㼘㼑㼟㻌㼣㼕㼠㼔㻌㻌㼞㼛㼠㼍㼠㼕㼛㼚㼍㼘㻌㼟㼜㼑㼑㼐㻌㻝㻜㻜㼞㼜㼙㻌― 209 ―

第82回

2010年度春季低温工学・超電導学会

3D-a06

バルク (2)

RE123 ṁⲢಝ࿕ࡃ࡞ࠢߦ߅ߌࠆㆶరࡐࠬ࠻ࠕ࠾࡯࡞ലᨐ
Effects of Post-Annealing under Reducing Atmospheres on Superconducting Properties ofRE123 Melt-Solidified Bulks⿒ဈ෹ᐘਅጊᷕ৻⍹੗ᖘ⴩᧶᧛㓁ᐔጊᧄ᣿଻⩆㊁ᜏጯየశੑ ᧲ᄢ㒮Ꮏ 
T. Akasaka, J. Shimoyama, Y. Ishii, Y. Kinemura, A. Yamamoto, H. Ogino, and K. Kishio (Univ. of Tokyo)
E-mail : tt096638@mail.ecc.u-tokyo.ac.jp (T. Akasaka)‫ޤ⸒✜ޣ‬
 REBa2Cu3Oy(RE123)ṁⲢಝ࿕ࡃ࡞ࠢߦ߅޿ߡߪ‫ޔ‬⒳⚿᥏߆ࠄ㔌ࠇࠆ߶ߤ Tc‫ޔ‬Jc ߥߤ⿥વዉ․ᕈ߇ഠൻߔࠆ႐ว߇ᄙ
޿‫ߦߢ߹ࠇߎޕ‬ᚒ‫․ߩߎߪޘ‬ᕈૐਅߩ৻࿃ߣߒߡ RE ߩ
Ba ࠨࠗ࠻⟎឵ࠍᜰ៰ߒߡ߈ߚ[1]‫ޔߚ߹ޕ‬シᏗ࿯㘃 RE123
ṁⲢಝ࿕ࡃ࡞ࠢߦ߅޿ߡ RE ߩ Ba ࠨࠗ࠻⟎឵ߩᛥ೙ߦ᦭
ലߢ޽ࠆߎߣ߇⍮ࠄࠇߡ޿ࠆㆶర㔓࿐᳇ਅߢߩ⚿᥏⢒ᚑࠍ‫ޔ‬Y123 ṁⲢಝ࿕ࡃ࡞ࠢ૞⵾ߦㆡ↪ߒߚߣߎࠈ‫ޔ‬⒳⚿᥏߆ࠄ㔌ࠇߚㇱಽߩ Tc‫ޔ‬Jc ߩഠൻ߇ᛥ೙ߐࠇ‫ࠢ࡞ࡃޔ‬૕ో૕
ߩ․ᕈᡷༀߦᚑഞߒߚߎߣࠍႎ๔ߒߡ߈ߚ[2]‫ᧄߢߎߘޕ‬⎇ⓥߢߪ‫ޔ‬ਛシᏗ࿯㘃 RE123 ߦ߅޿ߡ RE ߩ Ba ࠨࠗ࠻⟎឵ࠍᛥ೙ߔࠆലᨐ߇޽ࠆ‫ޔ‬ㆶర㔓࿐᳇ਅߢߩࡐࠬ࠻ࠕ࠾࡯
࡞ࠍ Y123 ߅ࠃ߮㊀Ꮧ࿯㘃 RE123 ṁⲢಝ࿕ࡃ࡞ࠢߦㆡ↪ߒ‫ޔ‬ࡃ࡞ࠢ૕ో૕ߩߐࠄߥࠆ⿥વዉ․ᕈߩဋ⾰ൻࠍ⹜ߺߚ‫ޕ‬Ba ࠨࠗ࠻߳ߩ⟎឵㊂ߩᷫዋߦ઻޿ಝ❗ࠛࡀ࡞ࠡ࡯߇ᄢ߈
ߊߥࠅ‫ߦ․ޔ‬ૐ᷷ߢߩࡇࡦ࠾ࡦࠣജ߇ᒝ߹ߞߚߎߣࠍ␜ໂ
ߒߡ޿ࠆ‫ߦ߁ࠃߩߎޕ‬ㆶరࡐࠬ࠻ࠕ࠾࡯࡞ߩዉ౉ߪ‫ޔ‬ૐ᷷ᔕ↪ࠍᗐቯߒߚ Y123 ࡃ࡞ࠢ᧚ᢱߩ㐿⊒ߦ᦭ലߢ޽ࠆߎߣ
߇᣿ࠄ߆ߦߥߞߚ‫ޕ‬⻠Ṷߢߪ‫ޔ‬Y123 ṁⲢಝ࿕ࡃ࡞ࠢߩㆶరࡐࠬ࠻ࠕ࠾࡯࡞
ലᨐࠍ✚ว⊛ߦ⼏⺰ߔࠆߣߣ߽ߦ‫ޔ‬㊀Ꮧ࿯㘃 RE123 ṁⲢಝ࿕ࡃ࡞ࠢߦኻߔࠆലᨐࠍ␜ߒ‫ޔ‬RE ర⚛ߏߣߩ Ba ࠨࠗ࠻⟎឵㊂ߩ㆑޿ߦߟ޿ߡ߽⸒෸ߔࠆ‫ޕ‬‫ޣ‬ታ㛎ᣇᴺ‫ޤ‬ RE123 ṁⲢಝ࿕ࡃ࡞ࠢߪએਅߩࠃ߁ߦ૞⵾ߒߚ‫ޕ‬࿕⋧෻ᔕᴺߦࠃߞߡ૞⵾ߒߚ RE123 ߣ RE2BaCuO5(RE211)ߩ☳ᧃ
ࠍ 7 : 3 ߩࡕ࡞Ყߣߥࠆࠃ߁ߦ⒊ขߒ 0.5 wt%ߩ Pt ࠍട߃ᷙวߒߚ‫৻ࠍࠇߎޕ‬ゲࡊ࡟ࠬ(1 t / cm2)ߦࠃߞߡ 20 mmI×10
mmt ߩࡍ࡟࠶࠻ߦᚑဳߒߚ‫ޕ‬⒳⚿᥏ߣߒߡ Nd123 න⚿᥏ࠍࡍ࡟࠶࠻⴫㕙ਛᄩߦ⟎޿ߚᓟ‫ޔ‬ⓨ᳇ਛߦߡṁⲢಝ࿕ࠍⴕ
ߞߚ‫ޕ‬ṁⲢಝ࿕ࡃ࡞ࠢߩ⒳⚿᥏߆ࠄേᓘᣇะߦᚑ㐳ߒߚa-growth ߅ࠃ߮ਅᣇߦᚑ㐳ߒߚ c-growth 㗔ၞ߆ࠄಾࠅ಴
ߒߚ 2 mm2 mm1 mmt ߩ⹜ᢱߦኻߒ‫⚛㉄ޔ‬ಽ࿶ 0.01 atm
ਅ‫ޔ‬850{C ߢࡐࠬ࠻ࠕ࠾࡯࡞ࠍⴕ޿‫⚛㉄ޔߦࠄߐޔ‬㊂೙ᓮ
ߩߚ߼㉄⚛᳇ᵹਛ‫ޔ‬450{Cߢࠕ࠾࡯࡞ߒߚ‫⹜ߩࠄࠇߎޕ‬ᢱߩ᭽‫ߥޘ‬ㇱ૏ࠃࠅಾࠅ಴ߒߚ⹜ᢱߦߟ޿ߡ‫ޔ‬SQUID ⏛᧤⸘ߦࠃࠆ⏛ൻ᷹ቯ߆ࠄ⿥વዉ․ᕈࠍ⹏ଔߒߚ‫ޕ‬‫⚿ޣ‬ᨐߣ⠨ኤ‫ޤ‬ Fig. 1 ߦ Y123 ࡃ࡞ࠢ⹜ᢱߩ a-growth 㗔ၞߩ⒳⚿᥏߆ࠄߩ〒㔌߇ 2, 4, 6 mm ߩㇱಽ߆ࠄಾࠅ಴ߒߚዊ ⹜ᢱߩ ZFC⏛ൻߩ᷷ᐲଐሽᕈࠍ␜ߔ‫ޕ‬ㆶరࡐࠬ࠻ࠕ࠾࡯࡞ㆊ⒟ࠍ⚻ߥ޿⹜ᢱߢߪ‫ޔ‬⒳⚿᥏߆ࠄ㔌ࠇࠆ߶ߤ♽⛔⊛ߦ Tc ߇ૐਅߒߡ޿ࠆ‫ߪࠇߎޕ‬⒳⚿᥏߆ࠄ㔌ࠇߚ૏⟎߶ߤ‫ޔ‬Y211 ߩᨆ಴㊂߇ᄙߊߥࠆߚ߼‫⚿ޔ‬᥏ᚑ㐳ㆊ⒟ߦ߅޿ߡ Y ߩ Ba ࠨࠗ࠻⟎឵߇ଦㅴߐࠇߚߚ߼ߣ⠨߃ࠄࠇࠆ‫৻ޕ‬ᣇߢ‫ޔ‬ㆶరࡐࠬ࠻
ࠕ࠾࡯࡞ࠍⴕ߁ߎߣߦࠃߞߡ Tc ߩะ਄߇⷗ࠄࠇ‫ߦ․ޔ‬⒳⚿᥏߆ࠄ㔌ࠇߚ૏⟎߶ߤ Tc ߇ᄢ߈ߊᡷༀߒߚ‫ޔߪࠇߎޕ‬ㆶర㔓࿐᳇ਅߢߩࡐࠬ࠻ࠕ࠾࡯࡞ㆊ⒟ߦ߅޿ߡ Ba ࠨࠗ࠻ߩ Y ⟎឵㊂߇ૐਅߒߚߚ߼ߣ⠨߃ࠄࠇࠆ‫ޕ‬
Fig. 2 ߦ Y123 ࡃ࡞ࠢ⹜ᢱߩ 20 kOe ߦ߅ߌࠆ Jc ߩ᷷ᐲଐሽᕈࠍ␜ߔ‫ޕ‬ㆶరࡐࠬ࠻ࠕ࠾࡯࡞ࠍㅊടߒߚ⹜ᢱߢߪ‫ޔ‬Jc߇ᄢ߈ߊะ਄ߒߡ߅ࠅ‫ޔ‬⒳⚿᥏߆ࠄ 6 mm 㔌ࠇߚ૏⟎ߦ߅޿ߡ߽‫ޔ‬2 mm ߩ૏⟎ߣห⒟ᐲߩ㜞޿ Jc ࠍ⛽ᜬߔࠆߎߣ߇
ࠊ߆ߞߚ‫ߦ․ޕ‬ૐ᷷஥ߢ Jc ߩᡷༀ߇ᄢ߈ߊ‫ ߪࠇߎޔ‬RE ߩ

Fig. 1 ZFC magnetization curves of small pieces
cut from various parts of Y123 melt-solidified bulks.

Fig. 2 Jc-T curves at 20 kOe of Y123 melt-solidified
bulks with and without annealing process under reducing
atmospheres.
[1] ਅጊઁ, 2009 ᐕᤐቄૐ᷷Ꮏቇ࡮⿥㔚ዉቇળ(2A-a01).
[2] ⿒ဈઁ, 2009 ᐕ⑺ቄૐ᷷Ꮏቇ࡮⿥㔚ዉቇળ(1D-p03).

― 210 ―

第82回

2010年度春季低温工学・超電導学会

3D-a07バルク (2)ੑᲑ䈮㊀䈰䈢⿥વዉ૕䊋䊦䉪䈮䈍䈔䉎䊌䊦䉴⌕⏛․ᕈ㩷㪫㫉㪸㫇㫇㪼㪻㩷㪽㫀㪼㫃㪻㩷㫇㫉㫆㫇㪼㫉㫋㫀㪼㫊㩷㫀㫅㩷㪻㫆㫌㪹㫃㪼㪄㫊㫋㪸㪺㫂㪼㪻㩷㫊㫌㫇㪼㫉㪺㫆㫅㪻㫌㪺㫋㫀㫅㪾㩷㪹㫌㫃㫂㫊㩷㫄㪸㪾㫅㪼㫋㫀㫑㪼㪻㩷㪹㫐㩷㫇㫌㫃㫊㪼㪻㩷㪽㫀㪼㫃㪻㩷㩷ฎ↰ ᄢ᮸䇮ዊጊ ల䇮ౝ⮮ ᥓਯ䇮⮮ઍ ඳਯ㩷 (ጤᚻᄢᎿ)FURUTA Daiki, OYAMA Mitsuru, NAITO Tomoyuki, FUJISHIRO Hiroyuki (Iwate Univ.)
E-mail: furuta0429@yahoo.co.jp㪈㪅ଚ౉䈪䈐䈝䇮Bex=8 T 䈪䊏䊷䉪䈏ᓧ䉌䉏䈢䇯䈘䉌䈮䇮䈠䈱䈫䈐䈱᝝ᝒ䈲䈛䉄䈮㩷⿥વዉ䊋䊦䉪䈱 NMR 䉇䉴䊌䉾䉺䉦䉸䊷䊄䈻䈱ᔕ↪䈮䈍䈇䈩䇮ᢙ⏛႐䈲 single 䈲 3.3 T 䈪䈅䉎䈱䈮ኻ䈚 double 䈲 1.6 T 䈫 single 䈱10mm 䈱ෘ䈘䉕᦭䈜䉎⿥વዉ䊋䊦䉪䈱⌕⏛䈏ᔅⷐ䈫䈭䉎䇯⿥વዉ䊋

50%䈱୯䈚䈎᝝ᝒ䈘䉏䈭䈎䈦䈢䇯䉁䈢䇮䉲䊚䊠䊧䊷䉲䊢䊮⸃ᨆ⚿ᨐ䈮䊦䉪䈲ෘ䈒䈜䉎䈖䈫䈪᝝ᝒ⏛႐ Bz 䈏ᄢ䈐䈒䈭䉎䈖䈫䈏⸘▚਄੍ᗐ䈘䉏䈍䈇䈩䉅䇮2 Ბ䈮㊀䈰䉎䈖䈫䈪 1 ᨎ䈱䈫䈐䉋䉍㜞⏛႐஥䈪⏛႐䈏ଚ౉䉎䈏䇮䊌䊦䉴⌕⏛䈮䉋䉎ᬌ⸛䈲䈖䉏䉁䈪䈲 10~15mm ⒟ᐲ䉁䈪䈪䈅䈚䇮ታ㛎୯䈮Ყセ⊛ㄭ䈇ᝄ䉎⥰䈇䈏⷗䉌䉏䈢䇯䈖䉏䉌䈱⚿ᨐ䈎䉌ታ䉍䇮ᢙ 10mm 䈱ෘ䈘䉕᦭䈜䉎⿥વዉ䊋䊦䉪䈻䈱ᬌ⸛䈲ⴕ䉒䉏䈩䈇㓙䈱⿥વዉ䊋䊦䉪䈲䊏䊮䊆䊮䉫ജ䈏ਇဋ৻䈪䈅䉍䇮2 ᨎ䈱⇣䈭䉎䊏䈭䈇䇯䈠䈖䈪ᧄ⎇ⓥ䈪䈲䇮⿥વዉ䊋䊦䉪䉕ੑᲑ䈮㊀䈰䈩ᡆૃ⊛䈮䊮䊆䊮䉫ജ䉕ᜬ䈧䊋䊦䉪䉕㊀䈰䇮ෘ䈒䈜䉎䈖䈫䈪ဋ৻䈭䊏䊮ᱛ䉄ജ⿥વዉ䊋䊦䉪䉕ෘ䈒䈚䇮䊋䊦䉪⴫㕙䈫ౝㇱ䈱䊌䊦䉴⌕⏛․ᕈ䈮䈧䈇䉕ᗐቯ䈚䈢䊋䊦䉪䈫䉂䈭䈜䈖䈫䈏䈪䈐䉎5䈩ታ㛎䈫䉲䊚䊠䊧䊷䉲䊢䊮䈪ᬌ⸛䈚䈢䇯
㪉㪅

ታ㛎ᣇᴺ㩷

C

B (Gd)

4㩷 ታ㛎䈪䈲I42 mm×18 mm 䈱 Gd ♽䊋䊦䉪䈫I45 mm×15 mm

L

C

L

3

B (T)

Gd-BulkTsensor 䋳䉦ᚲ(Gd-C Gd-GSR Sm-C )䇮ᾲ㔚ኻ 2 䉦ᚲ䉕䊋䊦䉪⴫㕙s

B (Gd-GSR)
B (Sm)

䈱 Sm ♽䊋䊦䉪䉕૶↪䈚䈢䇯Fig. 1 䈱ᝌ౉࿑䈮␜䈜䉋䈉䈮䊋䊦䉪䉕ੑᲑ䈮㊀䈰䇮ᐩ㕙䈎䉌಄ಓᯏ䈪 Ts=40 K 䈮વዉ಄ළ䈚䈢䇯Hall

T =40K No.1pulse

L
M

Sm-Bulk2䈍䉋䈶䊋䊦䉪㑆䈮⾍䉍ઃ䈔䇮䊌䊦䉴⏛႐ශടᓟ䈱⏛᧤ㆇേ䈫᷷ᐲᄌൻ䉕᷹ቯ䈚䈢䇯ශട䈜䉎䊌䊦䉴⏛႐ Bex 䈲 4.9~8.8 T 䈱▸࿐䈪ห৻

1䊌䊦䉴⌕⏛ᴺ(SPA)䉕↪䈇䈩3࿁ශട䈚䈢䇯䉮䉟䊦䈱⏛႐ਛᔃ䉕Gd䊋䊦䉪䈮ว䉒䈞䈢႐ว䈫 Sm 䊋䊦䉪䈮ว䉒䈞䈢႐ว䇮෸䈶ਔᣇ䈱

0䊋䊦䉪䈱ਛ㑆䈮ว䉒䈞䈢႐ว䈮䈧䈇䈩ᬌ⸛䈚䈢䇯䉲䊚䊠䊧䊷䉲䊢䊮⸃ᨆ䈲᦭㒢ⷐ⚛ᴺ䉕↪䈇䈩᷷ᐲ䈫⏛႐䈱ㅪᚑ⸃ᨆ䈎䉌ⴕ䈦䈢䇯⥃⇇㔚ᵹኒᐲ䈲એਅ䈱ᑼ䈪⴫䈚䇮ᧄ⎇ⓥ䈪䈲ቯᢙ ǂ=0.46e9 A/m2 䉕
↪䈇䈢䇯

6

7

8

B (T)

9

ex

Fig. 1. The applied field Bex dependence of the trapped fields BT
on the top and bottom surfaces of the Gd bulk at TS=40 K.

5
3
2

c0

2
­
° §T · ½
°D ®1 ¨ ¸ ¾ 㩷°¯ ©Tc ¹ °¿double (exp.)
single (exp.)
double (simul.)
single (simul.)

Ts=40K No.1pulse4⚿ᨐ䈫⠨ኤ㩷㩷 㩷T

㩷 Fig. 1 䈮⏛႐ਛᔃ䉕 Gd 䊋䊦䉪䈮ว䉒䈞䈢႐ว䈱䇮No.1 pulse 䈮

B C(T)

㩷㩷 J㪊㪅5䈍䈔䉎ශട⏛႐䈫᝝ᝒ⏛႐䈱㑐ଥ䉕␜䈜䇯Ყセ⊛ૐ⏛႐䈮䈍䈇䈩

Gd-Bulk3

Gd-Bulk
Sm-Bulk2

䈲 Gd 䊋䊦䉪䈱 GSR 䈎䉌⏛႐䈏ଚ౉䈚䇮㗅䈮 Gd 䊋䊦䉪ਛᔃ䇮Sm1䊋䊦䉪ਛᔃ䈫⏛႐䈱ଚ౉䈏⏕⹺䈪䈐䈢䇯Sm 䊋䊦䉪ਛᔃ䈲ૐ⏛႐䈪䈲⏛႐䈏ଚ౉䈪䈐䈝䇮Bex>6.5 T 䈪ᕆỗ䈮⏛႐䈏ଚ౉䈚䈢䇯㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷

0

Fig.2 䈮⏛႐ਛᔃ䉕 Gd 䊋䊦䉪䈮ว䉒䈞䇮No.1 pulse 䈮䈍䈔䉎᝝

3

4

5

ᝒ⏛႐ BTC(Gd)䈱ශട⏛႐ଐሽᕈ䉕␜䈜䇯ੑᲑ䈮㊀䈰䈢䈫䈐

6

7

B (T)

8

9

10

11

ex

(double)䇮Gd ৻ᨎ(single)䇮䈠䉏䈡䉏䈱䉲䊚䊠䊧䊷䉲䊢䊮⸃ᨆ⚿ᨐ䉕

Fig. 2. The applied field Bex dependence of the trapped field BT(simulated)䈫䈚䈩Ყセ䈚䈢䇯single 䈱᝝ᝒ⏛႐䈱䊏䊷䉪୯䈲for single bulk and stacked bulk. The results of the simulation

Bex=5.5 T 䈪䈅䉎䈱䈮ኻ䈚䇮double 䈮䈍䈇䈩䈲ૐ⏛႐䈪䈲⏛႐䈏

for the BT values are also shown.

― 211 ―

第82回

2010年度春季低温工学・超電導学会

3D-a08

バルク (2)䉲䊚䊠䊧䊷䉲䊢䊮䈎䉌ᬌ⸛䈚䈢䊌䊦䉴⌕⏛䈮䉋䉎᝝ᝒ⏛႐ะ਄䈱ᣇะᕈ㩷㩷㪥㫌㫄㪼㫉㫀㪺㪸㫃㩷㫊㫀㫄㫌㫃㪸㫋㫀㫆㫅㩷㫆㪽㩷㫋㪼㫄㫇㪼㫉㪸㫋㫌㫉㪼㩷㪸㫅㪻㩷㪽㫀㪼㫃㪻㩷㪻㫀㫊㫋㫉㫀㪹㫌㫋㫀㫆㫅㩷㫀㫅㩷㫊㫌㫇㪼㫉㪺㫆㫅㪻㫌㪺㫋㫀㫅㪾㩷㪹㫌㫃㫂㩷 㩷㪻㫌㫉㫀㫅㪾㩷㫇㫌㫃㫊㪼㪻㩷㪽㫀㪼㫃㪻㩷㫄㪸㪾㫅㪼㫋㫀㫑㪸㫋㫀㫆㫅㩷⮮ઍඳਯ㧘ౝ⮮ᥓਯ㧘ฎ↰ᄢ᮸ ጤᚻᄢᎿ 
FUJISHIRO Hiroyuki, NAITO Tomoyuki, FURUTA Daiki (Iwate Univ.)(E-mail: fujishiro@iwate-u.ac.jp)




5
4

z

Bex0

Bex (t)2tW

W=0.01s
W=1s
W=10s§ t ·exp¨1 ¸© W ¹

0
2

4

6
B

ex

8
(T)

10

12

Fig. 1. The applied field dependence of the trapped field Bz at
the bulk surface center for W=0.01 s for various D values(Ts=40 K). The W dependence of Bz for D=1.83e9 for a longmagnetic pulses (W=1 s, 10 s) is also shown.

(1)

8

90



Bz (r=0) (T)0 t

D=0.46e9
W=0.01sBz (6T)Bz (8T)(2)

T (6T)
T (8T)

706
pulse (6T)

4

60

2

 ࿑ 1 ߦ(1)ᑼߩቯᢙDࠍᄌൻߐߖߚ႐วߩࡃ࡞ࠢ⴫㕙ਛ
ᔃ(r=0)ߢߩᦨ⚳⊛ߥ᝝ᝒ⏛႐ߩශട⏛႐ Bex ଐሽᕈࠍ␜
ߔ‫ޕ‬ශട⏛႐ߩჇടߣ౒ߦ᝝ᝒ⏛႐ߪჇടߒ‫ᦨޔ‬ᄢࠍ␜ߒߚᓟߦᷫዋߔࠆ‫ߚ߹ޕ‬DߩჇട㧔ߔߥࠊߜ Jc ߩჇട㧕ߣߣ߽ߦࡃ࡞ࠢ⴫㕙ਛᔃߦ⏛᧤߇᝝ᝒߐࠇᆎ߼ࠆශട⏛႐ߪჇടߔࠆ‫⚿ߩࠄࠇߎޕ‬ᨐߪቯᕈ⊛ߦታ㛎ࠍౣ⃻ߒߡ޿ࠆ‫ޕ‬ ࿑ 2 ߦD=0.46e9 A/m2‫ޔ‬Bex=6, 8 T ࠍශടߒߚᓟߩࡃ࡞
ࠢ⴫㕙ਛᔃߢߩ⏛႐ Bz ߣ᷷ᐲ T ߩᤨ㑆ㅴዷࠍ␜ߔ‫ޕ‬ਛᔃ⏛႐ߪᢙ 10 ms ߦࡇ࡯ࠢࠍ␜ߒ‫ߩߘޔ‬ᓟ⏛᧤ࠢ࡝࡯ࡊߦ
ࠃࠅᷫዋߔࠆ߇‫ߩߎޔ‬ේ࿃ߪਛᔃ᷷ᐲߩ਄᣹ߩߚ߼ߣ⸃㉼ߔࠆߎߣ߇಴᧪ࠆ‫ߜࠊߥߔޕ‬ਛᔃ᷷ᐲߪ⚂ 7 s ߦࡇ࡯ࠢࠍ
ㄫ߃ߚᓟߦૐਅߔࠆ߇‫ࠇߎޔ‬એ㒠ߦ⏛႐ߩᷫዋߪήߊߥࠆ
ߎߣߢ⺑᣿ߢ߈ࠆ‫ᦨޕ‬ᄢ᷷ᐲߦ㆐ߔࠆᤨೞߪ⿥વዉࡃ࡞ࠢ
ߩᾲવዉ₸ߣ಄ಓᯏߩ಄ಓ⢻ജߢ᳿߹ࠆߚ߼‫ޔ‬ታ㓙ߩታ㛎ߢߪᄢ߈ߊᄌൻߐߖࠆߎߣߪ಴᧪ߥ޿߇‫⏛ޔ‬႐ߩࡇ࡯ࠢࠍ
᷷ᐲߩࡇ࡯ࠢࠍㄭߠߌࠆߎߣ߇಴᧪ࠇ߫‫ࠍࡊ࡯࡝ࠢ᧤⏛ޔ‬ૐᷫ಴᧪ࠆ‫ޕ‬࿑ 1 ߦࡠࡦࠣࡄ࡞ࠬ(W=1, 10 s)ߩ႐วߩ᝝ᝒ
⏛႐ߩශട⏛႐ଐሽᕈ߽૬ߖߡ␜ߔ߇‫ޔ‬W=10 s ߩ႐วߦBex=8 T ߢ Bz=4.3 T ߩ⏛႐ࠍ᝝ᝒߒߚ‫ޕ‬࿑ 3 ߦߎߩ႐ว
ߩࡃ࡞ࠢ⴫㕙ਛᔃߢߩ⏛႐ Bz ߣ᷷ᐲ T ߩᤨ㑆ㅴዷࠍ␜ߔ

80

Ts=40K

pulse (8T)

50

0

40

10-4

10-3

10-2

10-1
100
Time (s)101102Fig. 2. The time dependence of the local field Bz and thetemperature T at the bulk center (r=0) after applying pulsed
field of Bex=6 and 8 T (D=0.46e9, W=0.01 s).
90

10
8Bz (r=0) (T)Bex (t)3

D=1.83e91ශടߔࠆࡄ࡞ࠬ⏛႐ Bex(t)ߪ‫ߜ┙ޔ‬਄߇ࠅᤨ㑆W=0.01 s ߣߒ‫ޔ‬ታ㛎ߢ↪޿ߚࡄ࡞ࠬᵄᒻࠍᰴᑼߢㄭૃߒߚ‫ޕ‬s

D=0.23e9
0.46e90.93e91.83e9102 2­
° §T · ½
°D ®1 ¨ ¸ ¾
T
°
°
©
¹
c
¯
¿ 

§ t ·
Bex exp¨1 ¸© W ¹W

T =40K

W=0.01s

T (r=0) (K)Jc 0[1] ⮮ઍ߶߆‫ ╙ޔ‬81 ࿁ 2009 ᐕᐲ⑺ቄૐ᷷Ꮏቇ࡮⿥㔚ዉቇળ[1P-p11]㧔ጟጊᄢቇ㧕[2] Y. Komi, H. Ohsaki et al., Physica C 469 (2009) 1262.

D=1.83e9
W=10 sBz

T

Ts=40K70

6pulse (8T)

4

60

2

50

0
10-2

80
T (r=0) (K)3߇‫⏛ޔ‬႐ߩࡇ࡯ࠢ߇᷷ᐲߩࡇ࡯ࠢߦㄭߠߊߎߣߢ⏛᧤ࠢ࡝࡯ࡊࠍૐᷫߢ߈ࠆߎߣ߇⸃ᨆߦࠃࠅ⏕⹺ߢ߈ߚ‫⻠ޕ‬Ṷߢߪ‫ޔ‬ࠪࡒࡘ࡟࡯࡚ࠪࡦ߆ࠄ੍᷹ߐࠇࠆ PFM ߦ߅ߌࠆ᝝ᝒ⏛႐ะ਄ߩᣇะᕈߦߟ޿ߡ⼏⺰ߔࠆ‫ޕ‬㩷 ෳ⠨ᢥ₂㩷B (r=0) (T)䈲䈛䉄䈮㩷 ᒝജߥ⿥વዉࡃ࡞ࠢ⏛⍹ࠍታ⃻ߔࠆ㧝ߟߩᣇᴺ߇ࡄ࡞
ࠬ⌕⏛(PFM)ᴺߢ޽ࠆ߇‫ߩ✢᧤⏛ޔ‬ᕆỗߥㆇേߦࠃࠆᄢ߈
ߥ᷷ᐲ਄᣹ߩߚ߼‫ޔ‬᝝ᝒ⏛႐߇⏛႐ਛ಄ළ(FCM)ᴺߦᲧߴߡዊߐ޿ߣ޿߁ᰳὐ߇޽ࠆ‫ޕ‬ᚒ‫ ߢ߹ࠇߎߪޘ‬PFM ߦ߅ߌࠆ᝝ᝒ⏛႐ߩะ਄ߩߚ߼‫⴫ࠢ࡞ࡃޔ‬㕙෸߮ౝㇱߩ᷷ᐲ⸘᷹
ࠍⴕ޿‫⊒ޔ‬ᾲ㊂ߩផቯ߿⏛᧤ߩଚ౉ߦኻᔕߔࠆዪᚲ⊛ߥ᷷ᐲ਄᣹ߣ᝝ᝒ⏛႐ߩ㑐ଥࠍታ㛎⊛ߦᬌ⸛ߒߡ߈ߚ[1]‫ߒޕ‬߆ߒ‫ޔ‬ታ㛎ߢᬌ⸛ߢ߈ࠆ▸࿐ߪ㒢ࠅ߇޽ࠅ‫ޔ‬᝝ᝒ⏛႐ะ਄ߩ⛔৻⊛ߥᜰ㊎߇ᔅⷐߣߥࠆ‫⎇ᧄޕ‬ⓥߢߪ㔚⏛႐-᷷ᐲߩㅪᚑࠪࡒࡘ࡟࡯࡚ࠪࡦߩᚻᴺࠍ᭴▽ߒ‫ޔ‬᝝ᝒ⏛႐᳿ቯߩⷐ
࿃ࠍ᣿ࠄ߆ߦߒ‫ޔ‬᝝ᝒ⏛႐ะ਄߳ߩᣇะᕈࠍឭ᩺ߔࠆ‫ޕ‬⸃ᨆ䈫ᬌ⸛㩷 ⋥ᓘ 45 mm‫ޔ‬ෘߐ 15 mm ߩ⿥વዉࡃ࡞ࠢߩ๟ࠅߦ࠰
࡟ࡁࠗ࠼ࠦࠗ࡞㧔ౝᓘ 82 mm‫ޔ‬ᄖᓘ 116 mm‫ޔ‬㜞ߐ 50
mm㧕ࠍ㈩⟎ߒ‫ࠢ࡞ࡃޔ‬ᐩ㕙ߦ಄ಓᯏߩ಄ಓ⢻ജࠍ⴫⃻ߔࠆࠬࡍ࡯ࠨࠍ㈩⟎ߒߡ‫ࠨ࡯ࡍࠬޔ‬ᐩ㕙ࠍ Ts=40 K ߦવዉ಄ළߔࠆࡕ࠺࡞ࠍ૞ߞߚ‫ޕ‬㔚⏛⇇ߣᾲવዉߩㅪᚑᣇ⒟ᑼߪ‫ޔ‬ᄢ ፒ ࠄ ߩ ⸃ ᨆ [2] ࠍ ෳ ⠨ ߦ ‫ ( ޔ‬ᩣ ) ࡈ ࠜ ࠻ ࡦ ߩ EDDYTHERMO ࠍ↪޿ߡ⸃ᨆߒߚ‫⿥ޕ‬વዉ૕ߩ㕖✢ᒻߥ E-J․ᕈߪ n ୯ࡕ࠺࡞ࠍ↪޿‫⇇⥃ޔ‬㔚ᵹኒᐲ Jc ߩ⏛႐ଐሽᕈߪ Kim ࡕ࠺࡞ࠍ↪޿ߚ‫⏛ࡠ࠯ޕ‬႐ Jc ߩ᷷ᐲଐሽᕈߪᰴᑼ
ߦࠃࠅ⴫⃻ߒߚ‫ޕ‬㧔Dߪቯᢙ‫ޔ‬Tc=92 K㧕

40
10-1

100

101
102
Time (s)103104Fig. 3. The time dependence of the local field Bz and thetemperature T at the bulk center (r=0) after applying long
(W=10 s) pulsed field of Bex= 8 T (D=1.83e9).

― 212 ―

第82回

2010年度春季低温工学・超電導学会

3D-a09

バルク (2)䝸䞁䜾ᙧ䝞䝹䜽㉸㟁ᑟయ䜈䛾ྠᚰ෇䝇䝸䝑䝖ຍᕤ䛻䜘䜛ᤕᤊ☢⏺䛾㍈ᑐ⛠ᛶྥୖ㻌㻯㼛㼚㼏㼑㼚㼠㼞㼕㼏㻌㼟㼘㼕㼠㼠㼕㼚㼓㻌㼛㼒㻌㼍㻌㼞㼕㼚㼓㻙㼟㼔㼍㼜㼑㼐㻌㼎㼡㼘㼗㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼒㼛㼞㻌㼍㻌㼞㼑㼐㼡㼏㼠㼕㼛㼚㻌㼕㼚㻌㼏㼕㼞㼏㼡㼙㼒㼑㼞㼑㼚㼠㼕㼍㼘㻌㼕㼚㼔㼛㼙㼛㼓㼑㼚㼑㼕㼠㼥㻌㼛㼒㻌㼠㼔㼑㻌㼠㼞㼍㼜㼜㼑㼐㻌㼙㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㻌㛵㔝㻌 ṇᶞ䠈Ᏻ⏣㻌 ᩧྐ䠈኱ᓮ㻌 ༤அ䠄ᮾ኱䠅㻌㻿㻱㻷㻵㻺㻻㻌㻹㼍㼟㼍㼗㼕㻘㻌㼅㻭㻿㼁㻰㻭㻌㻴㼕㼠㼛㼟㼔㼕㻘㻌㻻㻴㻿㻭㻷㻵㻌㻴㼕㼞㼛㼥㼡㼗㼕㻌㻔㼁㼚㼕㼢㻚㻌㼀㼛㼗㼥㼛㻕㻌㻱㻙㼙㼍㼕㼘㻦㻌㼟㼑㼗㼕㼚㼛㻬㼗㻚㼡㻙㼠㼛㼗㼥㼛㻚㼍㼏㻚㼖㼜㻌㻌㻝䠊䛿䛨䜑䛻㻌㻌 㧗 䝞䝹䜽㉸㟁ᑟయ䜢䠈ᑠᆺ 㻺㻹㻾 䜔 㻹㻾㻵 䛾☢⏺Ⓨ⏕※䛸䛧䛶ᛂ⏝䛩䜛䛖䛘䛷䛾ㄢ㢟䛾୍䛴䛜䠈ᤕᤊ☢⏺䛾ᆒ୍໬䛷䛒䜛䠊ᮏ◊✲䛷䛿䠈䝸䞁䜾ᙧ䝞䝹䜽㉸㟁ᑟయ䛻ᑐ䛧䛶䠈ྠᚰ෇≧䛾䝇䝸䝑䝖ຍᕤ䜢⾜䛖䛣䛸䛻䜘䛳䛶䠈ᤕᤊ☢⏺ศᕸ䛾㍈ᑐ⛠ᛶ䛾஘䜜䛜ᨵၿ䛥䜜䜛䛣䛸䜢♧䛩䠊㻌㻌㻞䠊䝞䝹䜽㉸㟁ᑟయ㻌㻌 㻳㼐㻮㼍㻯㼡㻻 䛷స䜙䜜䛯እᚄ 㻢㻜㻌㼙㼙䠈ෆᚄ 㻞㻞㻌㼙㼙 䛾䝸䞁䜾ᙧ䝞䝹䜽㉸㟁ᑟయ䛾ẕᮦ䜢䠈ཌ䛥 㻞㻌㼙㼙 䛻䝇䝷䜲䝇䛧䛯㻔㻲㼕㼓㻚㻌 㻝㻔㼍㻕㻕䠊䜎䛯䠈䛣䜜䛸ྠ䛨䜒䛾䜢ู㏵⏝ព䛧䛶䠈䝃䞁䝗䝤䝷䝇䝖ຍᕤ䛻䜘䜚 㻟 ᮏ䛾ྠᚰ෇≧䝇䝸䝑䝖䜢సᡂ䛧䛯㼇㻝㼉䠊䛥䜙䛻䠈⤖ᬗᡂ㛗ቃ⏺䛜ᤕᤊ☢⏺䛾㍈ᑐ⛠ᛶ䛻୚䛘䜛ᙳ㡪䜢㍍ῶ䛩䜛䛯䜑䠈ศ๭䛥䜜䛯 㻠 ᮏ䛾䝸䞁䜾䜢┦ᑐⓗ䛻ᅇ㌿䛥䛫䛯㻔㻲㼕㼓㻚㻌㻝㻔㼎㻕㻕䠊䝸䞁䜾䛾㝽㛫䛸࿘ᅖ䜢ᶞ⬡䛷ᇙ䜑䛶䠈ᅛᐃ䜢⾜䛳䛯䠊㻌㻌㻌㻲㼕㼓㻌 㻝㻌 㻔㼍㻕㻌 㻿㼕㼙㼜㼘㼑㻌 㼞㼕㼚㼓㻙㼟㼔㼍㼜㼑㼐㻌 㼎㼡㼘㼗㻌 㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌 㻔㼎㻕㻌 㻮㼡㼘㼗㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼣㼕㼠㼔㻌㼏㼛㼚㼏㼑㼚㼠㼞㼕㼏㻌㼟㼘㼕㼠㼟㻌㻌㻟䠊╔☢䛸☢⏺ศᕸ ᐃ㻌㻌 䝞䝹䜽㉸㟁ᑟయ䜢䠈⦪ᆺ䛾㉸㟁ᑟ䝬䜾䝛䝑䝖䛾୰ᚰ㒊䛻⨨䛝䠈㻢㻜㻜㻌 㼙㼀 䛾እ㒊☢⏺䜢ຍ䛘䛯䠊ᾮయ❅⣲䜢⏝䛔䛯☢⏺୰䛾ᾐₕ෭༷䛻䜘䜚䠈╔☢䜢⾜䛳䛯䠊䝞䝹䜽㉸㟁ᑟయ䛸䝩䞊䝹⣲Ꮚ䜢䠈⊂⮬㛤Ⓨ䛧䛯 㻟 ㍈䜰䜽䝏䝳䜶䞊䝍䛻ྲྀ䜚௜䛡䛯㼇㻞㼉䠊䝞䝹䜽㉸㟁ᑟయ䛾ୖ䛻䠈ᵝ䚻䛺༙ᚄ䛷ྠᚰ෇≧䛾ᚄ㊰䜢タᐃ䛧䠈䛣䜜䛻䛭䛳䛶☢⏺䛾㍈᪉ྥᡂศ䛾ศᕸ䜢 ᐃ䛧䛯䠊㻌㻌㻠䠊⤖ᯝ䛸⪃ᐹ㻌㻌 㻲㼕㼓㻚㻌㻞 䛚䜘䜃 㻲㼕㼓㻚㻌㻟 䛻䠈䛭䜜䛮䜜䝇䝸䝑䝖ຍᕤ䜢᪋䛥䛺䛔༢⣧䛺䝸䞁䜾ᙧ䝞䝹䜽㉸㟁ᑟయ䛸䠈䝇䝸䝑䝖ຍᕤ䜢᪋䛧䛯䝞䝹䜽㉸㟁ᑟయ䛾䠈☢⏺ศᕸ ᐃ⤖ᯝ䜢♧䛩䠊䝩䞊䝹⣲Ꮚ䜢䠈䝞䝹䜽㉸㟁ᑟయ䛾⾲㠃䛛䜙 㻜㻚㻡㻌 㼙㼙 䛾㊥㞳䛷㉮ᰝ䛧䛯䠊䝇䝸䝑䝖ຍᕤ䜢᪋䛩䛣䛸䛻䜘䛳䛶䠈ᤕᤊ☢⏺䛾᭱኱್䛿ῶᑡ䛩䜛䛜䠈㻞㻜㻜㻌 㼙㼀௨ୖ䛾ᤕᤊ☢⏺䛜ᚓ䜙䜜䛯䠊䝇䝸䝑䝖ຍᕤ䛻䜘䛳䛶䠈⤒㊰ୖ䛷䛾☢᮰ᐦᗘ䛾ኚື䛜ᢚไ䛥䜜䛶䛚䜚䠈☢⏺ศᕸ䛾㍈ᑐ⛠ᛶ䛜ྥୖ䛧䛯䛣䛸䜢♧䛧䛶䛔䜛䠊㻲㼕㼓㻚㻌 㻟 䛻䠈୰ᚰ䛻㏆䛔༙ᚄ 㻢㻚㻡㻌㼙㼙 䛾⤒㊰ୖ䛷 ᐃ䛧䛯☢⏺ศᕸ䛾ẚ㍑䜢♧䛩䠊䝇䝸䝑䝖ຍᕤ䜢᪋䛩䛣䛸䛻䜘䛳䛶䠈⤒㊰ୖ䛾☢᮰ᐦᗘ䛾ኚືᖜ䛿 㻜㻚㻥㻌㻑䛛䜙㻜㻚㻟㻌㻑䛻ῶᑡ䛧䛯䠊㻌㻌 䝸䞁䜾ᙧ䝞䝹䜽㉸㟁ᑟయ䛾╔☢䛻䜘䛳䛶䠈ෆ㒊䛻䛿䝹䞊䝥≧䛾⤒㊰䛷㉸㟁ᑟ㟁ὶ䛜ὶ䜜䜛䛜䠈㉸㟁ᑟ≉ᛶ䛾୙ᆒ୍䛺䛹䛜ཎᅉ䛷䠈䛣䛾⤒㊰䛜ṍ䜑䜙䜜䜛䠊䝇䝸䝑䝖ຍᕤ䛿䠈䛣䛾ṍ䜏䜢▹ṇ䛩䜛ຠᯝ䛜䛒䜚䠈⤖ᯝⓗ䛻ᤕᤊ☢⏺ศᕸ䛾㍈ᑐ⛠ᛶ䛜ྥୖ䛧䛯䛸⪃䛘䛯䠊㻌㻌㻲㼕㼓㻚㻌 㻝㻌 㻹㼍㼓㼚㼑㼠㼕㼏㻌 㼒㼕㼑㼘㼐㻌 㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌 㼛㼒㻌 㼠㼔㼑㻌 㼟㼕㼙㼜㼘㼑㻌 㼞㼕㼚㼓㻙㼟㼔㼍㼜㼑㼐㻌㼎㼡㼘㼗㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼙㼑㼍㼟㼡㼞㼑㼐㻌㼍㼘㼛㼚㼓㻌㼏㼕㼞㼏㼡㼘㼍㼞㻌㼠㼞㼍㼖㼑㼏㼠㼛㼞㼕㼑㼟㻌㼣㼕㼠㼔㻌㼐㼕㼒㼒㼑㼞㼑㼚㼠㻌㼞㼍㼐㼕㼕㻌㻌㻌㻲㼕㼓㻚㻌 㻞㻌 㻹㼍㼓㼚㼑㼠㼕㼏㻌 㼒㼕㼑㼘㼐㻌 㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㻌 㼛㼒㻌 㼠㼔㼑㻌 㼞㼕㼚㼓㻙㼟㼔㼍㼜㼑㼐㻌 㼎㼡㼘㼗㻌㼟㼡㼜㼑㼞㼏㼛㼚㼐㼡㼏㼠㼛㼞㻌㼣㼕㼠㼔㻌㼏㼛㼚㼏㼑㼚㼠㼞㼕㼏㻌㼟㼘㼕㼠㼟㻌㻌㻌㻲㼕㼓㻚㻌 㻟㻌 㻯㼛㼙㼜㼍㼞㼕㼟㼛㼚㻌 㼛㼒㻌 㼙㼍㼓㼚㼑㼠㼕㼏㻌 㼒㼕㼑㼘㼐㻌 㼐㼕㼟㼠㼞㼕㼎㼡㼠㼕㼛㼚㼟㻌 㼍㼘㼛㼚㼓㻌㻢㻚㻡㻙㼙㼙㻌㼏㼕㼞㼏㼡㼘㼍㼞㻌㼠㼞㼍㼖㼑㼏㼠㼛㼞㼕㼑㼟㻌㻌ཧ⪃ᩥ⊩㻌㻝㻚㻌 㻹㻚㻌㻹㼛㼞㼕㼠㼍㻘㻌㻹㻚㻌㻷㼡㼙㼍㼐㼍㻘㻌㻭㻚㻌㻿㼍㼠㼛㻘㻌㻴㻚㻌㼀㼑㼟㼔㼕㼙㼍㻘㻌㻴㻚㻌㻴㼕㼞㼍㼚㼛㻦㻌㻲㼍㼎㼞㼕㼏㼍㼠㼕㼛㼚㻌㼍㼚㼐㻌㼜㼞㼛㼜㼑㼞㼠㼕㼑㼟㻌㼛㼒㻌㻽㻹㻳㻌㼏㼛㼕㼘㻌㼙㼍㼓㼚㼑㼠㼟㻘㻌㻼㼔㼥㼟㼕㼏㼍㻌㻯㻘㻌㼂㼛㼘㻚㻌㻠㻢㻟㻙㻠㻢㻡㻌㻔㻞㻜㻜㻣㻕㻌㼜㻚㻟㻤㻣㻙㻟㻥㻟㻌㻞㻚㻌 㻴㻚㻌 㼅㼍㼟㼡㼐㼍㻘㻌 㻹㻚㻌 㻿㼑㼗㼕㼚㼛㻘㻌 㻴㻚㻌 㻻㼔㼟㼍㼗㼕㻦㻌 㻹㼍㼓㼚㼑㼠㼕㼏㻌 㼒㼕㼑㼘㼐㻌㼙㼑㼍㼟㼡㼞㼑㼙㼑㼚㼠㻌㼟㼥㼟㼠㼑㼙㻌㼡㼟㼕㼚㼓㻌㼘㼕㼚㼑㼍㼞㻌㼍㼏㼠㼡㼍㼠㼛㼞㼟㻌㼒㼛㼞㻌㼠㼔㼞㼑㼑㻙㼍㼤㼕㼟㻌㼐㼞㼕㼢㼑㻘㻌㻭㼎㼟㼠㼞㼍㼏㼠㼟㻌㼛㼒㻌㻸㻰㻵㻭㻌㻔㻞㻜㻜㻥㻕㻌㼜㻚㻝㻤㻞㻙㻝㻤㻟㻌― 213 ―

第82回

2010年度春季低温工学・超電導学会

3D-a10バルク (2)ᒝ⏛ᕈ૕䈱⏛᳇ᶋ਄㩷㪄䊋䊦䉪૕๟ㄝ䈱⏛႐ಽᏓ䈫ᶋ਄೙ᓮ㪄㩷㪣㪼㫍㫀㫋㪸㫋㫀㫆㫅㩷㫆㪽㩷㫀㫉㫆㫅㩷㪹㫃㫆㪺㫂㩷㫌㫊㫀㫅㪾㩷㫋㫉㪸㫇㫇㪼㪻㩷㪽㫀㪼㫃㪻㩷㫀㫅㩷㪟㪫㪪㩷㪹㫌㫃㫂㩷㫄㪸㫋㪼㫉㫀㪸㫃㩷㪄㪤㪸㪾㫅㪼㫋㫀㪺㩷㪽㫀㪼㫃㪻㩷㪻㫀㫊㫋㫉㫀㪹㫌㫋㫀㫆㫅㩷㪸㫉㫆㫌㫅㪻㩷㪟㪫㪪㩷㪹㫌㫃㫂㩷㪸㫅㪻㩷㪺㫆㫅㫋㫉㫆㫃㩷㫆㪽㩷㫀㫉㫆㫅㩷㪹㫃㫆㪺㫂㪄㩷magnetic flux density (mT)magnetic flux density(mT)magnetic flux density(mT)㩷ศ↰㩷 ੫ᐔ㪃㩷 ੑ䊉ች㩷 ᤩ㪃㩷 ⅶ↢㩷 ⧐ਭ䇮⍹ㇹጟ㩷 ⁴䋨ᚑくᄢ䋩㩷㪰㪦㪪㪟㪠㪛㪘㩷㪩㫐㫆㫌㪿㪼㫀䋬㪥㪠㪥㪦㪤㪠㪰㪘㩷㪘㫂㫀㫉㪸㪃㩷㪬㪩㪠㪬㩷㪰㫆㫊㪿㫀㪿㫀㫊㪸㪃㩷㪠㪪㪟㪠㪞㪦㪟㪢㪘㩷㪫㪸㫂㪼㫊㪿㫀㩷㩿㪪㪜㪠㪢㪜㪠㩷㪬㫅㫀㫍㪅㪀㩷㪜㪄㫄㪸㫀㫃㪑㩷㫅㫀㫅㫆㫄㫀㫐㪸㪗㫊㫋㪅㫊㪼㫀㫂㪼㫀㪅㪸㪺㪅㫁㫇㩷㩷㪈䋮䈲䈛䉄䈮㩷
ᚒ‫ߚߒ⏛⌕ޔߪޘ‬㧝ኻߩ⿥㔚ዉࡃ࡞ࠢ૕㑆㧔OOǾZOO㧕ߢエ㋕⵾౞ᩇ OOǞ㐳ߐ OO ࠍᶋ਄ߐߖࠆߎ
ߣߦᚑഞߒߡ޿ࠆ‫ߩߎޕ‬ේℂࠍℂ⸃ߔࠆߚ߼ߦ‫ޔ‬ᶋ਄૕ࠍⓨ㑆ߢ࿕ቯߐߖߚ⁁ᘒߢ‫ࠢ࡞ࡃޔ‬૕ߣᶋ਄૕㧔㋕౞ᩇ㧕㑆ߦ௛ߊ㔚⏛ജ‫ޔ‬ᶋ਄૕ㄭறߩ⏛᧤ኒᐲ᷹ቯ╬ߦߟ޿ߡᬌ⸛ߒߚ=?‫ޔߚ߹ޕ‬቟ቯᶋ਄ߐߖࠆߦߪᶋ਄૕ߩᄢ߈ߐߣ
ࠡࡖ࠶ࡊ㑆ߦ৻ቯߩ㑐ଥ߇޽ࠆߎߣ߇ࠊ߆ߞߡ߈ߚ‫ޕ‬ߎࠇࠄࠍ〯߹߃ߡ‫੹ޔ‬࿁ᬌ⸛ߒߚ੐㗄ߪ‫⏛ޔ‬ᕈ૕ࠍᶋFig.1 Trapped magnetic flux distribution in HTS bulk material,਄ߐߖߚ⁁ᘒߢࡃ࡞ࠢ૕ߦㄭߠߌߚࠅ‫ޔ‬㆙ߑߌߚࠅߒߚ
where the gap length between HTS bulks are 20mm and30mm,ߣ߈ߩࡃ࡞ࠢ૕ㄭறߩ⏛႐ಽᏓߦߟ޿ߡߢ޽ࠆ‫ࠃࠇߎޕ‬respectively.
ࠅ‫ޔ‬ᶋ਄૕߇ࡃ࡞ࠢ૕ߦㄭߠߌߚߣ߈ߪ‫ޔ‬ᶋ਄૕ㇱಽߩ⏛႐߇ዊߐߊߥࠆߎߣ‫৻ޕ‬ᣇ‫ޔ‬㆙ߑߌߚߣ߈ߪ‫ޔ‬ㅒߦ⏛230
႐߇ᷫࠄߕߦ৻ቯ߆߿߿Ⴧടߔࠆߎߣࠍ⏕⹺ߒߚ‫ࠇߎޕ‬220ߪ‫ޔ‬ⓨ㑆ߩ⏛႐ᄌൻߦࠃߞߡ⿥વዉ⁁ᘒߦߥߞߡ޿ࠆࡃ
210

࡞ࠢ૕⴫㕙ߦߒ߾߳޿㔚ᵹ߇⺃⿠ߐࠇ‫߇ࠇߎޔ‬ᓳరജߣ200
ߒߡ௛޿ߚߚ߼ߣ⠨߃ࠄࠇࠆ‫ࠍࠇߎޕ‬ᔕ↪ߔࠇ߫‫ޔ‬቟ቯ
No.8
No.6
No.7
190

ᶋ਄ߒߡߥ޿⏛ᕈ૕߽ᶋ਄น⢻ߦߥࠆߎߣ߇ᦼᓙߢ߈ࠆ‫ޕ‬180ߔߥࠊߜ‫ޔ‬ᶋ਄૕߇቟ቯᶋ਄ߒߥ޿ߢ ஥ߦߊߞߟ޿ߡ
㻓
㻔
㻕
㻖
㻗
㻘
㻙

޿ࠆߣ߈‫ࠢ࡞ࡃޔ‬૕ߦ⏛႐ᄌൻࠍਈ߃ࠇ߫ᶋ਄߇น⢻ߦ
distance from the center(mm)ߥࠆߣ⠨߃ࠄࠇࠆ‫ࠍࠇߎޕ‬ᬌ⸛ߔࠆߚ߼ߦ‫ࡃߚߒ⏛⌕ޔ‬(a). Specificity of Fe circular-cylinder part.      ࡞ࠢ૕㑆ߢ ஥ߦߊߞઃ޿ߚᶋ਄૕ߦ⌕⏛⏛႐ࠃࠅ߽ᄢ
260
߈ߥᄖㇱ⏛႐ࠍශടߐߖߚߣߎࠈ‫੍ޔ‬ᗐㅢࠅᶋ਄૕ࠍਛ
ᄩߦ⒖േߐߖࠆ੐߇น⢻ߣߥߞߚ‫ޕ‬㩷240㪉䋮⹜㛎⚿ᨐ㩷
220ࡃ࡞ࠢ૕ㄭறߩ⏛႐⸘᷹ߦߪ‫ޔ‬ᣩൻᚑࠛ࡟ࠢ࠻ࡠࡦࠗ
200
No.11(mT)ࠢࠬ⵾ߩࡎ࡯࡞⚛ሶ *)%㧔ኸᴺߪ *9&
180
No.12(mT)‫ߪࠕ࡝ࠛࡉࠖ࠹ࠢࠕޔ‬ǾOO㧕ࠍ↪޿‫ ࠍࠇߎޔ‬160
୘ขࠅઃߌߚࡃ࡞ࠢ૕಄ළࠤ࡯ࠬࠍ૞ᚑߒߚ‫ޕ‬
0
1
2
3
4
5
6
distance from the center(mm)࿑㧝ߪ‫࡞࡯ࠢ࠼࡞࡯ࠖࡈޔ‬ᴺߦࠃࠅ⌕⏛ߒߚࡃ࡞ࠢ૕
OOǾZOO ๟ㄝߩゲᣇะᚑಽ㧔$< ᚑಽ㧕ࠍඨᓘᣇะߦ
(b). Specificity other than a Fe circular-cylinder
᷹ቯߒߚ․ᕈߢ޽ࠆ‫ࠢ࡞ࡃ߇ \ޔߢߎߎޕ‬૕ㄭற‫\ޔ‬㧩
Fig.2 The magnetic-field specificity of a HTS bulk area when aߪࡃ࡞ࠢ૕㑆ߩਛᄩㇱߢ޽ࠆ‫⏛⏛⌕ޔࠅࠃࠇߎޕ‬႐ߪਛ
Fe circular-cylinder is brought close to a HTS bulk object.
ᄩㇱ߇ࡈ࡜࠶࠻ߥ․ᕈߢ޽ࠆߎߣ߇ࠊ߆ࠆ‫ޕ‬࿑  ߪ‫ޔ‬㋕౞ᩇࠍࡃ࡞ࠢ૕㑆ਛᄩㇱߢᶋ਄ߐߖߚ߹߹‫ޔ‬
180
ζ8
ζ9
ζ10
㋕౞ᩇࠍࡃ࡞ࠢ૕ߦㄭߠߌߚߣ߈ߩࡃ࡞ࠢ૕ㄭறߩ $< ․
175
ζ11
ζ12
ζ14
170
ᕈߢ޽ࠆ‫ޔߢߎߎޕ‬࿑ C ߪ⏛ᕈ૕ㇱಽ‫ޔ‬࿑ D ߪ⏛ᕈ૕165
ߩή޿ㇱಽߢ޽ࠆ‫⏛ޔࠅࠃࠇߎޕ‬ᕈ૕ㇱಽߢߪࡃ࡞ࠢ૕
160
๟ㄝߩ $< ᚑಽߪᒙߊߥࠅ‫ޔ‬ή޿ㇱಽߪㄭߠ޿ߚߎߣߦࠃ
155ࠅᒝߊߥߞߡ޿ࠆߎߣ߇ࠊ߆ࠆ‫⏛ޔߪࠇߎޕ‬ᕈ૕ߩ⏛ൻ
150
ߦࠃࠆⓨ㑆⏛႐ߩჇടࠍࡃ࡞ࠢ૕߇ߒ߾߳޿ߒ‫⺃ޔ‬ዉ㔚
145ᵹ߇ࡃ࡞ࠢ૕ౝߦᵹࠇߚߚ߼ߣ್ᢿߢ߈ࠆ‫ޕ‬
140
0
50
100
150
200
ߎࠇࠃࠅ‫ࠢ࡞ࡃޔ‬૕⴫㕙ߦ⏛ᕈ૕ߩ⏛႐ࠍߒ߾߳޿ߔ
time(sec)ࠆ㔚ᵹࠍਈ߃ߡ߿ࠆߣ‫ޔ‬ᶋ਄ߒߡ޿ߥ޿⏛ᕈ૕߽ᶋ਄ߐ

Fig.3 Magnetic levitation regulation test, where 45-60sec
ߖࠆߎߣ߇น⢻ߦߥࠆߣ⠨߃ࠄࠇࠆ‫ࠅࠃޔߢߎߘޕ‬ዊဳshows the status which has adhered to the single-sided HTSߩ⏛ᕈ᧚ᢱߢㅢᏱߪߤߜࠄ߆ߦߊߞߟ޿ߡߒ߹߁߽ߩࠍ
bulk and 100 sec or more is the aspect which is moving to theᶋ਄೙ᓮߐߖࠆታ㛎ࠍ⹜ߺߚ‫ޔߪߦࠇߎޕ‬㧡OOǾZ㧡OO ߩ
central part.
㋕౞ᩇࠍ೑↪ߒߚ‫ޕ‬࿑  ߪߎߩߣ߈ߩ⏛႐ಽᏓ․ᕈߢ޽
ࠅ‫ࠢ࡞ࡃޔ‬૕⌕⏛ᓟߦᄖㇱ⏛႐ࠍශടߒߡ‫ ޔ‬஥ߦ⓭ߞෳ⠨ᢥ₂㩷ߟ޿ߚ⏛ᕈ૕ࠍਛᄩ߹ߢᶋ਄ߐߖߚߣ߈ߩ․ᕈߢ޽ࠆ‫ޕ‬
 4[QOC*KIWEJKGVCN+'''6TCPU#RRN5WRGTXQN
߹ߚ‫ࠍࠝ࠺ࡆߩ߈ߣߩߎޔ‬ᒰᣣ⚫੺ߔࠆ‫ޕ‬
PQRR,70'

― 214 ―

第82回

2010年度春季低温工学・超電導学会