Laser and microwave spectroscopy of even-parity Rydberg states of neutral ytterbium and multichannel-quantum-defect-theory analysis

Measurements of high-lying even-parity 6sns1S0 and 6snd1,3D2 levels of neutral 174Yb are presented in this paper. Spectroscopy is performed with a two-step laser excitation from the ground state 4f146s21S0, and the Rydberg levels are detected by using the field ionization method. Additional two-phot...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. A 2018-12, Vol.98 (6)
Main Authors: Lehec, H., Zuliani, A., Maineult, W., Luc-Koenig, E., Pillet, P., Cheinet, Patrick, Niyaz, F., Gallagher, T. F.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
electronic structure of atoms & molecules
optics
physics
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Measurements of high-lying even-parity 6sns1S0 and 6snd1,3D2 levels of neutral 174Yb are presented in this paper. Spectroscopy is performed with a two-step laser excitation from the ground state 4f146s21S0, and the Rydberg levels are detected by using the field ionization method. Additional two-photon microwave spectroscopy is used to improve the relative energy accuracy where possible. The spectroscopic measurements are complemented by a multichannel-quantum-defect-theory (MQDT) analysis for the J = 0 and the two-coupled J = 2 even-parity series. Here, we compare our results with the previous analysis of Aymar, Débarre, and Robaux and analyze the observed differences. From the MQDT models, a revised value for the first ionization limit I6s = 50443.07041 (25) cm–1 is proposed for 174Yb.
ISSN:2469-9926
2469-9934