Zobrazeno 1 - 10
of 76
pro vyhledávání: '"John C. Wheatley"'
Publikováno v:
Cryogenics. 18:649-655
We discuss the preparation, surface area and thermal resistance of sintered copper heat exchangers intended for establishing thermal contact between liquid He 3 and a nuclear demagnetization refrigerator. This information is used as the basis for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a4fe56cc4fbbd716bc0f1d01fe3b252
https://doi.org/10.1016/0011-2275(78)90045-0
https://doi.org/10.1016/0011-2275(78)90045-0
Publikováno v:
Journal of Low Temperature Physics. 18:501-517
The thermal resistance in both superfluid phases of 3He has been measured at 20.0 and 29.6 bar in zero magnetic field. Heat conduction in 3He-B is shown to be primarily hydrodynamic, and a regime of reproducible heat flow behavior in the A phase is r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4796671b1359a4c96b4cd379cc129857
https://doi.org/10.1007/bf00116140
https://doi.org/10.1007/bf00116140
Autor:
John C. Wheatley
Publikováno v:
Physics Today. 29:32-42
Magnetic superfluid phases in the low-millikelvin region, a Josephson ''ringing'' effect and fluid anisotropy are among the exotic properties of this surprising substance. (AIP)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::399f34f5448d7cefbd7389c3a8ced45d
https://doi.org/10.1063/1.3023313
https://doi.org/10.1063/1.3023313
Publikováno v:
Proceedings of the National Academy of Sciences. 78:31-35
Liquids can work in heat engine cycles that employ regeneration. Four such cycles are discussed: Stirling, Malone, Stirling-Malone, and Brayton. Both regeneration and the role of the second thermodynamic medium are treated, and the principles are ver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6aeba0009fd6bcd7470edaa05219d9b7
https://doi.org/10.1073/pnas.78.1.31
https://doi.org/10.1073/pnas.78.1.31
Publikováno v:
Journal of Low Temperature Physics. 25:699-715
Measurements of both A→B and B→A transitions have been made as a function of magnetic field up to ∼100 G at temperatures and pressures close to the polycritical point (PCP). Forms for the specific heat differenceCA−CB=C0(P)−α(P)(Tc−T)/Tc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e20ea5ad6f99456c725cc753dd9c042
https://doi.org/10.1007/bf00657293
https://doi.org/10.1007/bf00657293
Publikováno v:
American Journal of Physics. 53:147-162
Thermoacoustical phenomena have a long history and are frequently characterized by great complexity. In the present paper, we describe how, by the use of suitable acoustical structures, the phenomena can both be simplified and readily demonstrated. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475c07c9451bc0f11c9cac0f90b49b11
https://doi.org/10.1119/1.14100
https://doi.org/10.1119/1.14100
Publikováno v:
Journal of Low Temperature Physics. 32:263-300
Longitudinal magnetic relaxation in both /sup 3/He-A and /sup 3/He-B is studied in a variety of magnetic fields and three different geometries. Relaxation as described by Leggett and Takagi is observed for particular geometries in both /sup 3/He-A an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::848d426630413ae9900da10b0d403712
https://doi.org/10.1007/bf00116916
https://doi.org/10.1007/bf00116916
Publikováno v:
Physical Review Letters. 35:1010-1013
Experiments based on an analogy to the ac Josephson effect have shown in both $sup 3$He-A and $sup 3$He-B that a pairing theory of the superfluidity of $sup 3$He is essentially correct. Additional observations of parallel ringing are not in agreement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5909946b5586a8bfd55259ad37f06376
https://doi.org/10.1103/physrevlett.35.1010
https://doi.org/10.1103/physrevlett.35.1010
Autor:
John C. Wheatley, Douglas Paulson
Publikováno v:
Journal of Low Temperature Physics. 33:277-283
Measurements at 29.4 bar using zero-sound propagation, which is very sensitive to the orientation of the % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXafv3ySLgzGmvETj2BSbqefm0B1jxALjhiov2D% aebbfv3yS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd11b6461e18dc033bda46728febb0e9
https://doi.org/10.1007/bf00114999
https://doi.org/10.1007/bf00114999
Publikováno v:
Proceedings of the National Academy of Sciences. 77:6983-6987
Two symmetric, convecting steady states have been observed in a novel cell of unity aspect ratio and studied over a range of temperature for two concentrations of 3 He in superfluid 4 He. An existing theory due to Parshin has been related to the cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2427cce00b6958fb44f3a63a99c058fe
https://doi.org/10.1073/pnas.77.12.6983
https://doi.org/10.1073/pnas.77.12.6983