Fast switching NMR system for measurements of ground-state quadrupole moments of short-lived nuclei

TL;DR

This paper introduces a rapid-switching NMR system designed to efficiently measure ground-state quadrupole moments of short-lived nuclei, improving detection speed and sensitivity in nuclear physics experiments.

Contribution

The paper presents a novel fast switching technique for resonance circuits that enhances measurement efficiency for short-lived nuclei in NMR systems.

Findings

Enables quick sequential frequency application over a wide range.

Improves detection efficiency of resonance signals.

Effective for nuclei with small polarization or production rates.

Abstract

A beta-ray detecting nuclear quadrupole resonance system has been developed at NSCL/MSU to measure ground-state electric quadrupole moments of short-lived nuclei produced as fast rare isotope beams. This system enables quick and sequential application of multiple transition frequencies over a wide range. Fast switching between variable capacitors in resonance circuits ensures sufficient power delivery to the coil in the beta-ray detecting nuclear magnetic resonance technique. The fast switching technique enhances detection efficiency of resonance signals and is especially useful when the polarization and/or production rate of the nucleus of interest are small and when the nuclear spin is large.