Precision Measurements of the Hyperfine Structure in the 23P State of 3He

TL;DR

This paper reports high-precision measurements of the hyperfine structure in the 23P state of 3He, utilizing modified laser spectroscopy techniques to achieve an order of magnitude improvement over previous data.

Contribution

The study introduces specialized modifications to existing laser spectroscopy setups, enabling unprecedented precision in hyperfine structure measurements of 3He.

Findings

Hyperfine splittings measured with significantly improved accuracy.

Experimental setup successfully adapted from 4He to 3He.

Results provide new benchmarks for hyperfine structure data.

Abstract

The unusually large hyperfine structure splittings in the 23P state of the 3He isotope is measured using electro-optic techniques with high precision laser spectroscopy. Originally designed to probe the fine structure of the 4He atom, this experimental setup along with special modifications I implemented to resolve certain 3He related issues has made possible new high precision hyperfine structure measurements. Discussed are the details of the experimental setup and the modifications, including in depth information necessary to consider while performing these measurements. The results of these hyperfine structure measurements give an order of magnitude improvement in precision over the best previously reported values.