Results on Spin-exchange Rate Measurements between ^129Xe and Alkali Metals
Abstract
By measuring the relaxation rate of the nuclear spin polarization of ^129Xe in the presence of alkali metal vapor at different densities, we found the spin-exchange rates between ^129Xe and three alkali metals: K, Rb, and Cs. By studying the Xe pressure dependence in the range from 0.1 to 0.7 atmospheres, the two terms in the spin-exchange rates, binary collision term and van der Waals molecule term, are separated. Our work provides results for extracting the spin exchange rate between ^129Xe and alkali metals, which should ultimately help us attain an optimal parameter space for the polarization of ^129Xe, a potential agent for MR imaging.
- Publication:
-
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- May 2003
- Bibcode:
- 2003APS..DMP.G5005S