VERIFICATION OF MICROWAVE SWEEPING METHODS FOR MEASUREMENT OF HYPERFINE STRUCTURE SPLITTING OF SLIVER ATOMS IN SUPERFLUID HELIUM

DOI HANDLE

Bibliographic Information

Other Title
  • 超流動ヘリウム中Ag原子の超微細構造間隔測定に向けたマイクロ波掃引方法の検証

Abstract

We have been developing a laser spectroscopy method for atoms introduced into superfluid helium (He II). We generate spin polarization by optical pumping of atoms and perform laser-radiofrequency and laser-microwave (MW) double resonance. This method enables us to determine the nuclear spins and electromagnetic moments through measurements of Zeeman splitting and hyperfine structure (HFS) splitting. Moreover, because HFS splitting energies in He II shift slightly from those in vacuum, we expect the phenomena lead us to study the interaction between He Ⅱ and atoms. We have so far successfully measured HFSs of alkali atoms such as stable ^85,87Rb and ^133Cs in He II. Currently, we are attempting to apply this method to group 11 atoms to investigate whether a similar difference appears in atoms other than alkalis. We are now trying to apply this technique to Ag atoms. In this study, we introduced a new pulsed laser with repetition of 20 kHz for optical pumping of Ag atoms and succeeded in obtaining laser-RF double resonance spectra. In addition, by obtaining a laser-MW double resonance spectrum using a Rb gas cell, we evaluated the accuracy and precision of MW frequencies when different MW sweep methods were used.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top