Document Type

Article

Publication Date

4-6-2020

Publication Title

Physical Review A

Abstract

We report an absolute frequency measurement of the 2s3d 1 D2 state in neutral 9Be using two-photon spectroscopy with a resonant intermediate state. The absolute center-of-gravity energy is determined to be 64 428.40 321(55) cm−1, a factor of 180 more precise than the previous experimental measurement. We also confirm our previous result for the energy of the intermediate 2s2p 1 P1 level. Precision is limited by unresolved hyperfine structure and the complications of performing resonant two-photon spectroscopy on an atomic beam. A three-level rate-equation analysis is presented to explore, and minimize, systematic uncertainties arising from small deviations of the angle between the atomic and optical beams off-perpendicular.

Volume

101

First Page

042503

DOI

10.1103/PhysRevA.101.042503

Rights

©2020 American Physical Society

Comments

Archived as published.

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