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Atomic transitions and the first ionization potential of promethium determined by laser spectroscopy

Dominik Studer, Stephan Heinitz, Reinhard Heinke, Pascal Naubereit, Rugard Dressler, Carlos Guerrero, Ulli Köster, Dorothea Schumann, and Klaus Wendt
Phys. Rev. A 99, 062513 – Published 26 June 2019
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Abstract

The atomic spectrum of neutral promethium has been studied extensively by laser resonance ionization spectroscopy. We report on more than 1000 atomic transitions in the blue and near infrared spectral ranges, most of them between high excited energy levels. As Rydberg convergences could not be assigned unambiguously in the dense spectrum at high excitation energies, the first ionization potential (IP) was determined via field ionization of weakly bound states within a static electric field. By applying the saddle-point model, a value of IP(Pm)=45020.8(3)cm1 [5.58188(4)eV] was derived, which confirms previous expectations of 45027(80) and 44985(140)cm1, which were obtained indirectly from lanthanide IP systematics.

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  • Received 19 March 2019

DOI:https://doi.org/10.1103/PhysRevA.99.062513

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNuclear Physics

Authors & Affiliations

Dominik Studer1,*, Stephan Heinitz2, Reinhard Heinke1, Pascal Naubereit1, Rugard Dressler3, Carlos Guerrero4, Ulli Köster5, Dorothea Schumann3, and Klaus Wendt1

  • 1Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
  • 2Belgian Nuclear Research Centre, SCK-CEN, 2400 Mol, Belgium
  • 3Paul-Scherrer Institut, 5232 Villigen, Switzerland
  • 4Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, 41012 Sevilla, Spain
  • 5Institut Laue-Langevin, 38042 Grenoble, France

  • *dstuder@uni-mainz.de

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Vol. 99, Iss. 6 — June 2019

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