학술논문
Measurements of giant cross sections in low temperature4 He-4 He scattering
Document Type
Article
Source
Journal of Low Temperature Physics; November 1992, Vol. 89 Issue: 3-4 p569-572, 4p
Subject
Language
ISSN
00222291; 15737357
Abstract
We have studied binary collisions of ground state4 He atoms at temperatures from 340 mK to 430 mK using an atomic beam apparatus built in a dilution refrigerator. Very large s-wave scattering cross sections between 120Å2 –250 Å2 have been observed. These are due to the proximity of a dimer state near the continuum of the interaction potential. Results show that the latest potential of Aziz et al. needs modification.