MEASUREMENTS OF THE THERMAL EMISSIVITY OF A SUPERCONDUCTING NIOBIUM FILM

Authors
BRUMLEY R BUCHMAN S MESTER J
Citation
R. Brumley et al., MEASUREMENTS OF THE THERMAL EMISSIVITY OF A SUPERCONDUCTING NIOBIUM FILM, Czechoslovak journal of Physics, 46, 1996, pp. 2875-2876
Citations number
4
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
46
Year of publication
1996
Supplement
5
Pages
2875 - 2876
Database
ISI
SICI code
0011-4626(1996)46:<2875:MOTTEO>2.0.ZU;2-R
Abstract
The radiative exchange of heat between a superconducting Nb film at 4. 2 K and a Ti film at 4.2 - 11 K has been measured. A Nb-coated quartz sphere was used as a bolometer to measure total heat absorbed, from wh ich an effective emissivity was derived. Under these conditions the ef fective emissivity of the Nb film is about 3%.