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- Title
High-resolution laser spectroscopy on the hyperfine structure and isotope shift of 237,239Np.
- Authors
Kaja, Magdalena; Urquiza-González, Mitzi; Berg, Felix; Reich, Tobias; Stemmler, Matou; Studer, Dominik; Weber, Felix; Wendt, Klaus
- Abstract
Nuclear ground state properties of 237 , 239 Np were investigated by high-resolution laser spectroscopy at the RISIKO mass separator off-line radioactive beam facility of the University of Mainz. The isotope shifts and the hyperfine parameters were determined in two different atomic ground-state transitions at 398.80 nm and 395.61 nm. The data allowed for calculation of the so far unknown nuclear moments of the short-lived isotope 239 Np, i.e. the nuclear magnetic dipole moment of μ I = +3.18(2) μ N and the electric quadrupole moment of Q S = +4.05(8) eb, using the known nuclear moments of 237 Np as a reference, which were determined by electron paramagnetic resonance and investigations of muonic X-ray hyperfine structures, respectively.
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2024, Vol 60, Issue 7, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-024-01362-y