✦ LIBER ✦

Laser-enhanced low-pressure gas NMR signal from 129Xe

✍ Scribed by Xizhi Zeng; Changjun Wu; Mingxin Zhao; Senlin Li; Liyun Li; Xuetong Zhang; Zidong Liu; Wuyang Liu

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 173 KB
Volume: 182
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(91)90120-x

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✦ Synopsis

We have greatly enhanced the nuclear magnetic resonance signal of low-pressure gas ( 15 Torr of "'Xe) on an NMR spectrometer with linearly polarized laser radiation. An ampliticatton factor of the nuclear polarization is of the order ofmagnitude of IO4 as compared with the Boltzmann polarization in the same magnetic field.

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The enhanced 129Xe gas ( 15 Torr) NMR signal has been observed on a Varian XL-200 NMR spectrometer with spin-exchange optical pumping. An amplification factor of the nuclear spin polarization of gaseous 129Xe is of the order 103 times the Boltzmann polarization at 60°C. The binary spin-exchange cros