Measurement of longitudinal nuclear spin relaxation time in NMR gyroscope by real-time monitoring

Author:

Zhang Yang12,Zheng Jintao12,Yu Zaiyang123,Xiong Zhiqiang12,Wang Zhiguo12ORCID,Luo Hui12

Affiliation:

1. College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

2. Hunan Key Laboratory of Mechanism and Technology of Quantum Information, National University of Defense Technology, Changsha 410073, China

3. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710049, China

Abstract

In the atomic cell of a nuclear magnetic resonance gyroscope, a transverse bias field is applied to enable the in situ alkali magnetometer to sense the variations in the longitudinal magnetic field. During a single relaxation process of the noble gas, the longitudinal relaxation time is obtained by monitoring and fitting the signal of the magnetometer in real-time. The relaxation times measured using our method are nearly identical to those obtained using the conventional delayed pulse method, but in contrast, our method saves ∼90% of the time. By using the new method, fast and accurate batch testing for a large number of atomic cells can be achieved to optimize the manufacturing of the cells, which is helpful in speeding up the development of gyroscopes.

Funder

National Natural Science Foundation of China

Foundation of State Key Laboratory of Inertial Technology

Publisher

AIP Publishing

Subject

General Physics and Astronomy

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