University of Oulu

M A Khalal et al 2017 J. Phys. B: At. Mol. Opt. Phys.50 225003

Multielectron spectroscopy : energy levels of Kn⁺ and Rbn⁺ ions (n = 2, 3, 4)

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Author: Khalal, M A1; Soronen, J2; Jänkälä, K2;
Organizations: 1Sorbonne Université, UPMC Université Paris 06, CNRS, LCP-MR ( UMR 7614 ), 4 place Jussieu, F-75252 Paris Cedex 05, France
2Nano and Molecular Systems Research Unit, University of Oulu, PO Box 3000, FI-90014, Finland
3ISMO, CNRS UMR 8214, Université Paris-Sud, Bâtiment 350, F-91405, Orsay, France
4Synchrotron SOLEIL, l ’ Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette Cedex, France
5Université Paris-Est, 5 boulevard Descartes, F-77454, Marne-la-Vallée cedex 2, France
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
Persistent link:
Language: English
Published: IOP Publishing, 2017
Publish Date: 2018-10-30


A magnetic bottle time-of-flight spectrometer has been used to perform spectroscopy of K n⁺ and Rb n⁺ states with ionization degrees n of 2, 3 and 4. Energy levels are directly measured by detecting in coincidence the n electrons that are emitted as a result of single photon absorption. Experimental results are compared with the energies from the NIST atomic database and ab initio multiconfiguration Dirac–Fock calculations. Previously unidentified 3p ⁴(³P)3d ¹ ⁴D energy levels of K²⁺ are assigned.

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Series: Journal of physics. B, Atomic, molecular and optical physics
ISSN: 0953-4075
ISSN-E: 1361-6455
ISSN-L: 0953-4075
Volume: 50
Issue: 22
Article number: 225003
DOI: 10.1088/1361-6455/aa90d6
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: EXACTUS doctoral program, Tauno Tönning foundation and Magnus Ehrnrooth foundation are acknowledged by JS for their support. This work has been financially supported by the Research Council for Natural Sciences and Engineering of the Academy of Finland.
Copyright information: © 2017 IOP Publishing Ltd.