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

H. Lehec, A. Zuliani, W. Maineult, E. Luc-Koenig, P. Pillet, P. Cheinet, F. Niyaz, and T. F. Gallagher
Phys. Rev. A 98, 062506 – Published 6 December 2018

Abstract

Measurements of high-lying even-parity 6sns1S0 and 6snd1,3D2 levels of neutral Yb174 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. We compare our results with the previous analysis of Aymar, Débarre, and Robaux [J. Phys. B: At. Mol. Phys. 13, 1089 (1980)] and analyze the observed differences. From the MQDT models, a revised value for the first ionization limit I6s=50443.07041(25)cm1 is proposed for Yb174.

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  • Received 7 May 2018

DOI:https://doi.org/10.1103/PhysRevA.98.062506

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

H. Lehec, A. Zuliani, W. Maineult, E. Luc-Koenig, P. Pillet, and P. Cheinet*

  • Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, Université Paris-Saclay, Bâtiment 505, 91405 Orsay, France

F. Niyaz and T. F. Gallagher

  • Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA

  • *patrick.cheinet@u-psud.fr
  • tfg@virginia.edu

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Issue

Vol. 98, Iss. 6 — December 2018

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