Dynamic measurement of the Kapitza resistance
โ Scribed by M. Kopp; E. Klein
- Book ID
- 104626334
- Publisher
- Springer US
- Year
- 1978
- Tongue
- English
- Weight
- 335 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0022-2291
No coin nor oath required. For personal study only.
โฆ Synopsis
To measure the Kapitza resistance between a solid and liquid helium, a thin sample is immersed in the liquid and subjected to pulsed heating. The Kapitza resistance is determined from the time variation of the sample temperature, measured by a built-in nuclear orientation thermometer. The system Au/dilute 3He-4He is used as an example. Potentials and limitations of the method are discussed.
๐ SIMILAR VOLUMES
A calculation of the Kapitza boundary resistance between harmonic solids has been noted previously (Little, Can. J. Phys. 37 (1959) 334; Leung and Young, Phys. Rev. B 36 (1987) 4973) to lead to apparently paradoxical results in the limit of identical solids: instead of vanishing, the resistance tend
taken that it was entirely submerged in the dilute solution. The thermal resistance of the junction was measured and the result can be well described by the equation r~ot 4 --Tcยฐld = 9"56 x 10 -7 K 4 ]JW -1 (5) Q . โข .
The Kapitza thermal boundary resistance Rr has been measured using both the steady-state (dc) and the second-sound (ac) techniques on the same copper sample during the same low-temperature run. The two techniques give the same values for R~:; RK is therefore a constant for measuring [requencies rang