Resonance ionization spectroscopy of high-lying 4sns and 4snd Rydberg levels of odd calcium isotopes

Iwata, Yoshihiro ; Miyabe, Masabumi ; Akaoka, Katsuaki ; Wakaida, Ikuo ; Hasegawa, Shuichi*

Calcium Rydberg levels are of significant interest for efficient and isotope-selective resonance ionization of trace radionuclides such as calcium-41 ( $^{41}$ Ca). In this study, we report novel measurement data on the energy level shifts of calcium-43 ( $^{43}$ Ca) for 4sns $^{1}$ S $_{0}$ and 4s(n-1)d $^{1}$ D $_{2}$ (n=40, 45, 50, 55, 60) Rydberg levels due to hyperfine-induced singlet-triplet mixing specific to isotopes with an odd mass number.

Language	:	English
Journal	:	Journal of the Optical Society of America B
Volume	:	41
Number	:	1
Pages	:	p.119 - 126
Publication Year/Month	:	2024/01
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Paper URL	:	https://doi.org/10.1364/JOSAB.507539
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident; Resonance ionization spectroscopy; Calcium; Rydberg levels; Isotope shift; Hyperfine-induced singlet-triplet mixing
Research Facility	:	ウラン濃縮研究棟
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JAEA R&D Navigator	:	Toward a Simple Analysis of the Difficult-To-Measure Nuclide Calcium-41 Contained in Concrete Waste; Selective Ionization of Odd Calcium Isotopes Using Electronic-Level Specificity[]
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InCites™	:	Percentile:44.87 Category:Optics
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Registration No. : AA20230178
JAEA Abstracts No. : 52001192
Paper Submission No. : 28605

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