In-gas-cell laser spectroscopy for magnetic dipole moment of ${}^{199}$Pt toward $N=$ 126

Abstract

Magnetic dipole moment and mean-square charge radius of ${}^{199}$Pt ($I^{\pi }=$ 5/2${}^{-}$) have been evaluated for the first time from the investigation of the hyperfine splitting of the ${\lambda }_1=$ 248.792 nm transition by in-gas-cell laser ionization spectroscopy. Neutron-rich nucleus ${}^{199}$Pt was produced by multi-nucleon transfer reaction at the KISS where the nuclear spectroscopy in the vicinity of $N=$ 126 is planed from the aspect of an astrophysical interest as well as the nuclear structure. Measured magnetic dipole moment $+$0.63(13)${\mu }_{\mathrm{N}}$ is consistent with the systematics of those of nuclei with $I^{\pi }=$ 5/2${}^{-}$. The deformation parameter $|<{\beta }_2^2{>}^{1/2}|$ evaluated from the isotope shift indicates the gradual shape change to spherical shape of platinum isotopes with increasing neutron number toward $N=$ 126.

arXiv comment8 pages, 5 figures

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Cited by in corpus (3)

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