SURFACE RELAXATION MECHANISMS OF LASER-POLARIZED XE-129

被引：74

作者：

DRIEHUYS, B

CATES, GD

HAPPER, W

机构：

[1] Department of Physics, Princeton University, Princeton

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.74.4943

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have determined the dominant mechanism for nuclear spin relaxation of laser-polarized 129Xe in silicone coated cells. The 129Xe relaxation rate is found to be strongly dependent on magnetic field, which indicates that 129Xe becomes trapped in the coating for extraordinarily long times (τ>10 μs). Relaxation is caused by dipolar coupling between the trapped 129Xe and the protons in the coating, which we confirm with a novel double resonance scheme. This result should aid the development of improved coatings, and offers new possibilities for using laser-polarized 129Xe as a probe of other polymer and biological systems. © 1995 The American Physical Society.

引用

页码：4943 / 4946

页数：4

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