Precision calculation of scalar nuclear spin-spin coupling in a noble gas mixture

Abstract

Indirect spin-spin interactions between nuclei bound in a molecule are well-known in nuclear magnetic resonance, but such interactions between unbound atoms are less well studied and are often assumed to be zero. We present the first precision calculation of this interaction between 129Xe and 3He nuclei in a gas. Relativistic, state-of-the-art electronic structure theory is used to compute the scalar coupling constant J(R) and the interatomic potential energy function, V(R), as functions of the Xe-He internuclear distance R. Using virial expansion we find the nuclear spin enhancement factor kappa = -0.0105 +/- 0.0015 in excellent agreement with recent experiments. This interaction is particularly important for precision measurements using nuclear spin co-magnetometers.

arXiv comment5 pages, 3 figures, 1 table

References in corpus (5)

• Search for New Physics with Atoms and Molecules
• Limit on Lorentz and CPT Violation of the Neutron Using a Two-Species Noble-Gas Maser
• A Laboratory Search for a Long-Range T-odd, P-odd Interaction from Axion-Like Particles using Dual Species Nuclear Magnetic Resonance with Polarized Xe-129 and Xe-131 Gas
• Constraints on Spin-Dependent Short-Range Interaction between Nucleons
• Spin Precession Experiments for Light Axionic Dark Matter

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• Frequency shifts in noble-gas magnetometers
• Response Dynamics of Alkali Metal-Noble Gas Hybrid Trispin System
• Dual-Species Synchronous Spin-Exchange Optical Pumping