Trispin dynamics in an alkali-metal-noble-gas nuclear-magnetic-resonance gyroscope

An alkali-metal-noble-gas NMR gyroscope is widely used for precision rotation measurement in fundamental and applied physics. By numerically simulating the alkali-metal-nuclear-nuclear trispin dynamics, we investigate the dependence of gyroscope response on alkali-metal spin relaxation time and nuclear spin magnetization. We found additional resonance peaks appear due to a new source of instability, namely, the inherent multistability of trispin dynamics. The numerical simulation results agree well with the recent experiment, enabling a better understanding and exploitation of the gyroscope signal.