Optimizing 129 Xe and 131 Xe relaxation in an NMR gyroscope using buffer gas pressure and wall coating

The accuracy of inertial measurement performed by the nuclear magnetic resonance gyroscope (NMRG) with two isotopes depends on the duration of transverse relaxation. Extending the relaxation of the xenon isotopes at the same time plays a very important role in the accuracy of gyro. The relaxation ti...

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Bibliographic Details
Published in:Journal of magnetic resonance (1997) 2023-07, Vol.352, p.107430
Main Authors: Wang, Xuelei, Li, Jianli, Liu, Zhanchao, Wu, Zekun, Shao, Yibo
Format: Article
Language:English
Subjects:
Isotopes
Magnetic Resonance Imaging - methods
Magnetic Resonance Spectroscopy - methods
Xenon - chemistry
Xenon Isotopes - chemistry
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Summary:The accuracy of inertial measurement performed by the nuclear magnetic resonance gyroscope (NMRG) with two isotopes depends on the duration of transverse relaxation. Extending the relaxation of the xenon isotopes at the same time plays a very important role in the accuracy of gyro. The relaxation time of Xe and Xe can be increased to about 15-20 s by optimizing the buffer gas pressure of N at about 0.57 amg and coating RbH, respectively. According to the results of theoretical analysis and experimentation, the gyro stability reaches 0.6°/h, and the active measurement volume is 3 × 3 × 3 ∼ mm .
ISSN:1096-0856