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

Journal Article · · Physical Review A
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [3]
  1. Univ. Paris-Saclay, Orsay (France); DOE/OSTI
  2. Univ. Paris-Saclay, Orsay (France)
  3. Univ. of Virginia, Charlottesville, VA (United States)
+ Show Author Affiliations

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.

Research Organization:
Univ. of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FG02-97ER14786
OSTI ID:
1610331
Journal Information:
Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 98; ISSN PLRAAN; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Autoionization rates of core-excited magnesium Rydberg atoms in electric fields using the core fluorescence as a reference text January 2019
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