Authors:	Kneip, Nina Weber, Felix Kaja, Magdalena A. Düllmann, Christoph E. Mokry, Christoph Raeder, Sebastian Runke, Jörg Studer, Dominik Trautmann, Norbert Wendt, Klaus
Title:	Investigation of the atomic structure of curium and determination of its first ionization potential
Online publication date:	18-Jan-2023
Year of first publication:	2022
Language:	english
Abstract:	We report on the investigation of the atomic structure of curium (Z=96) by resonance ionization spectroscopy. Three different excited energy levels were populated from the 5f76d7s29Do2 ground state as first excitation steps. Wide-range scans were performed for the search of second excitation steps around the literature value of the ionization potential. These spectra were analyzed to identify Rydberg levels and auto-ionizing resonances. The ionization potential was consistently determined as 48330.68(16)cm−1 through the evaluation of Rydberg convergences and the complementary approach of DC electric field ionization by evaluating the ionization threshold according to the saddle point model. The new result deviates by 6.7cm−1 from the literature value of 48324(2)cm−1 by Köhler et al. [15] and is about one order of magnitude more precise.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-8403
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	The European physical journal : D 76
Pages or article number:	190
Publisher:	Springer
Publisher place:	Berlin u.a.
Issue date:	2022
ISSN:	1434-6079
Publisher DOI:	10.1140/epjd/s10053-022-00510-7
Appears in collections:	DFG-491381577-H