Polarization of ^129Xe with Applications to Medical Imaging and Precision Measurements
Abstract
Laser polarized ^129Xe has several applications, most notably in medical imaging and precision measurement of CP violating atomic electric dipole moments. These applications require the highest possible polarization of a fixed quantity of xenon gas or the highest possible magnetic moment, which is proportional to the product of polarization, concentration, and volume. The optimum is generally established by a set of trade offs with a large number of constraints including the details of production and destruction of ^129Xe polarization. We have initiated a detailed study of ^129Xe polarization by spin exchange with laser--diode--array--polarized Rb vapor with the goal of detailed quantitative agreement between measurements and model predictions over a broad range. This work, complementing earlier work on spin exchange pumping of ^129Xe and ^3He by our group and others, will include studies of wall coatings, temperature dependence of wall relaxation, laser diode spectral profile and heating effects, and two and three body buffer gas collisions. The progress of this study will be presented including temperature dependent wall relaxation and laser diode spectral profile dependence.
- Publication:
-
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- June 2000
- Bibcode:
- 2000APS..DMP..B404S