Determination of ionization potential of calcium by high-resolution resonance ionization spectroscopy

Miyabe, Masabumi ; Geppert, C.*; Kato, Masaaki; Oba, Masaki ; Wakaida, Ikuo ; Watanabe, Kazuo; Wendt, K. D. A.*

High-resolution resonance ionization spectroscopy has been utilized to determine a precise ionization potential of Ca. Three-step resonance excitation with single-mode extended cavity diode lasers populates long and unperturbed Rydberg series of 4snp (1P1) and 4snf (1F3) states in the rage of n=20-150. By using an extended Ritz formula for quantum defect, the series convergence limit has been determined to be 49305.9240 (20) cm $^{-1}$ with the accuracy improved one order of magnitude higher than previously reported ones.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	75
Number	:	3
Pages	:	p.034302_1 - 034302_10
Publication Year/Month	:	2006/03
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Paper URL	:	https://doi.org/10.1143/JPSJ.75.034302
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Keywords	:	no keyword
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Registration No. : AA20050274
JAEA Abstracts No. : 34000490
Paper Submission No. : 609

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