scholarly journals Lambda point thermodynamics of confined liquid helium: negative surface specific heat

1998 ◽  
Vol 24 (2) ◽  
pp. 72-75 ◽  
Author(s):  
R. A. Ferrell ◽  
J. K. Bhattacharjee
Keyword(s):  
Specific Heat ◽  
Liquid Helium ◽  
Negative Surface ◽  
Lambda Point

scholarly journals Specific heat of liquid helium in zero gravity very near the lambda point

2003 ◽  
Vol 68 (17) ◽  
Author(s):  
J. A. Lipa ◽  
J. A. Nissen ◽  
D. A. Stricker ◽  
D. R. Swanson ◽  
T. C. P. Chui
Keyword(s):  
Specific Heat ◽  
Liquid Helium ◽  
Zero Gravity ◽  
Lambda Point

Theory of the specific heat of liquid helium-4 above the lambda point

Physica ◽  
1966 ◽  
Vol 32 (5) ◽  
pp. 995-1000 ◽  
Author(s):  
J.L. De Coen ◽  
H. Tompa
Keyword(s):  
Specific Heat ◽  
Liquid Helium ◽  
Helium 4 ◽  
Lambda Point

Specific Heat and Phonon Transport in Er-Containing Rare-Earth–Aluminum Garnets at Liquid-Helium Temperatures

2018 ◽  
Vol 127 (4) ◽  
pp. 705-712 ◽  
Author(s):  
E. I. Salamatov ◽  
A. V. Taranov ◽  
E. N. Khazanov ◽  
E. V. Charnaya ◽  
E. V. Shevchenko
Keyword(s):  
Rare Earth ◽  
Specific Heat ◽  
Liquid Helium ◽  
Phonon Transport

The specific heat of metals and alloys at low temperatures

1957 ◽  
Vol 240 (1222) ◽  
pp. 321-332 ◽  
Keyword(s):  
Fermi Surface ◽  
Specific Heat ◽  
Liquid Helium ◽  
Brillouin Zone ◽  
Low Temperatures ◽  
Metals And Alloys ◽  
Thermal Excitation ◽  
Electronic Specific Heat ◽  
Conduction Electrons ◽  
Elastic Shear

The effect of thermal excitation of the conduction electrons on the elastic shear constants is investigated in a metal in which the Fermi surface lies close to the Brillouin-zone boundaries. It is shown that in these circumstances electron-lattice interaction leads to an addi­tional term in the specific heat, linear in the temperature in the liquid-helium range, which, therefore, augments the pure electronic specific heat. The variation in magnitude of this linear term is considered in the α-brasses. It is suggested that this is the physical effect underlying the peculiarities of the ‘electronic’ specific heat of these alloys.

FIRST SOUND IN LIQUID HELIUM AT HIGH PRESSURES

1953 ◽  
Vol 31 (7) ◽  
pp. 1156-1164 ◽  
Author(s):  
K. R. Atkins ◽  
R. A. Stasior
Keyword(s):  
Specific Heat ◽  
Liquid Helium ◽  
Carrier Frequency ◽  
High Pressures ◽  
Constant Pressure ◽  
Constant Density ◽  
Pulse Technique ◽  
Temperature Range ◽  
Specific Heats ◽  
First Sound

The velocity of ordinary sound in liquid helium has been measured in the temperature range from 1.2 °K. to 4.2 °K. at pressures up to 69 atm. A pulse technique was used with a carrier frequency of 12 Mc.p.s. Curves are given for the variation of velocity with temperature at constant pressure and also at constant density. There is no detectable discontinuity along the λ-curve. The results are used to discuss the ratio of the specific heats, the coefficient of expansion below 0.6 °K., and the specific heat above 3 °K.

Specific Heat and Expansion Coefficient of Liquid Helium-3 Under Pressure Below 0.1° K.

Nature ◽  
1961 ◽  
Vol 191 (4795) ◽  
pp. 1261-1263 ◽  
Author(s):  
D. F. BREWER ◽  
J. R. G. KEYSTON
Keyword(s):  
Specific Heat ◽  
Liquid Helium ◽  
Expansion Coefficient ◽  
Helium 3

Specific Heat of Helium Confined to a 57-μmPlanar Geometry near the Lambda Point

2000 ◽  
Vol 84 (21) ◽  
pp. 4894-4897 ◽  
Author(s):  
J. A. Lipa ◽  
D. R. Swanson ◽  
J. A. Nissen ◽  
Z. K. Geng ◽  
P. R. Williamson ◽  
...  
Keyword(s):  
Specific Heat ◽  
Lambda Point
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