DIFFUSION MEASUREMENT OF ATOMIC-HYDROGEN IN HELIUM GAS AT VERY-LOW TEMPERATURES

Authors
ARAI T MATSUBARA A HOTTA S KORHONEN JS MASUHARA N SUZUKI T MASAIKE A MIZUSAKI T HIRAI A
Citation
T. Arai et al., DIFFUSION MEASUREMENT OF ATOMIC-HYDROGEN IN HELIUM GAS AT VERY-LOW TEMPERATURES, Physica. B, Condensed matter, 194, 1994, pp. 901-902
Citations number
5
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
1
Pages
901 - 902
Database
ISI
SICI code
0921-4526(1994)194:<901:DMOAIH>2.0.ZU;2-D
Abstract
We studied the diffusion of atomic hydrogen in saturated He-3 (0.3 < T < 0.4 K) and He-4 (0.6 < T < 1.1 K) vapor. Using the Carr-Purcell-Mei boom-Gill spin echo method near zero field, we were able to measure th e diffusion coefficient for a wide range of temperatures and we could determine the diffusion cross section Q(D) at very low temperatures. Q (D) was observed to decrease with temperature in agreement with the ca lculation by Jochemsen et al.