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| 001 |
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20190325090706.0 |
| 008 |
880714s1987 xx a bm 000 0 eng d |
| 035 |
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|a (OCoLC)ocm18215693
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| 035 |
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|9 AAB3441AM
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| 040 |
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|a TXA
|b eng
|c TXA
|d OCLCQ
|d OCLCF
|d OCLCO
|d OCLCQ
|d TXA
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| 035 |
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|a (OCoLC)18215693
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| 049 |
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|a TXAM
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| 099 |
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|a 1987
|a Dissertation
|a H148
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| 100 |
1 |
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|a Hahn, Kenneth Dwayne.
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| 245 |
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|a Suppression of ³He superfluidity in small cylindrical pores.
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| 264 |
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1 |
|c 1987.
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| 300 |
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|a x, 115 leaves :
|b illustrations ;
|c 29 cm
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| 336 |
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|a text
|b txt
|2 rdacontent
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| 337 |
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|a unmediated
|b n
|2 rdamedia
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| 338 |
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|a volume
|b nc
|2 rdacarrier
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| 500 |
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|a Typescript (photocopy).
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| 502 |
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|b Ph. D. in Physics
|c Texas A & M University
|d 1987
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| 500 |
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|a Vita.
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| 504 |
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|a Includes bibliographical references (leaves 101-104).
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| 520 |
3 |
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|a The suppression of ³He superfluidity in 1800 Å radius pores has been observed using a torsional oscillator cell and nuclepore membrane. The measured amount of B-phase suppression is less than half the amount calculated by Kjäldman, Kurkijärvi, and Rainer for perfectly diffuse scattering boundary conditions. The data fits the theory well for a fitted pore radius of approximately 2550 Å. The AC technique employed generates very low flow velocities and provides a high sensitivity to the pressure variation across the membrane. This permits the observation of a superfluid velocity which is two to three orders of magnitude smaller than usually measured and which does not obey the usual (depairing) temperature dependence. The critical velocity manifests a low dissipation state in ³He not previously observed in less sensitive experiments. In the A-phase a greater amount of transition temperature suppression is measured. Likewise there is a low velocity critical phenomenon which occurs for mass currents much smaller than in the B-phase.
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| 650 |
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|a Helium.
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| 650 |
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|a Superfluidity.
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| 650 |
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|a Helium at low temperatures.
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| 650 |
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4 |
|a Major physics.
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| 655 |
|
7 |
|a Academic theses
|2 lcgft
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| 700 |
1 |
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|a Parpia, Jeevak M.,
|e degree supervisor.
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| 700 |
1 |
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|a Agnolet, Glenn,
|e degree committee member.
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| 700 |
1 |
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|a Lunsford, Jack,
|e degree committee member.
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| 700 |
1 |
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|a Saslow, Wayne M.,
|e degree committee member.
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| 710 |
2 |
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|a Texas A & M University,
|e degree granting institution.
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| 856 |
4 |
1 |
|u http://hdl.handle.net/1969.1/Dissertations-26938
|z Link to OAKTrust copy
|t 0
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| 856 |
4 |
1 |
|u http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=754020231&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD
|z Link to ProQuest copy
|t 0
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| 994 |
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|a C0
|b TXA
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| 999 |
f |
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|s 9ec3d91b-de58-3460-ba91-6b839b327895
|i 376968a3-674d-3191-a993-5e4ca384477a
|t 0
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| 952 |
f |
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|p noncirc
|a Texas A&M University
|b J.J. Pickle Campus
|c High Density Repository
|s HDR
|d Remote Storage
|t 0
|e 1987 Dissertation H148
|h Other scheme
|i unmediated -- volume
|m A14839638447
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| 952 |
f |
f |
|a Texas A&M University
|b College Station
|c Electronic Resources
|s www_evans
|d Available Online
|t 0
|e 1987 Dissertation H148
|h Other scheme
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| 998 |
f |
f |
|a 1987 Dissertation H148
|t 0
|l Available Online
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| 998 |
f |
f |
|a 1987 Dissertation H148
|t 0
|l Remote Storage
|