Tri-spin dynamics in alkali metal-noble gas NMR gyroscope

TL;DR

This paper investigates the complex tri-spin dynamics in alkali metal-noble gas NMR gyroscopes through numerical simulations, revealing new resonance peaks and stability issues that enhance understanding of gyroscope signals.

Contribution

It introduces a detailed numerical simulation of tri-spin dynamics, uncovering multistability and resonance phenomena that improve the understanding of gyroscope behavior.

Findings

Additional resonance peaks due to multistability

Simulation results align with recent experiments

Insights into stability and signal optimization

Abstract

Alkali metal-noble gas NMR gyroscope is widely used for precision rotation measurement in fundamental and applied physics. By numerically simulating the alkali-nuclear-nuclear tri-spin dynamics, we investigate the dependence of gyroscope response on alkali 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 tri-spin dynamics. The numerical simulation results agree well with the recent experiment, enabling a better understanding and exploitation of the gyroscope signal.