Excited-state lifetimes in In, Sn, and Te measured with the HiCARI -ray spectrometer at RIBF at RIKEN

Acosta, J.*; Jungclaus, A.*; Armstrong, M.*; Grska, M.*; Parry, T.*; Orlandi, R.; 他29名*

Physical Review C, 111(6), p.064316_1 - 064316_12, 2025/06

https://doi.org/10.1103/mysq-byyv

From 2020 to 2021, as part of the HiCARI project, high-resolution in-beam -ray spectroscopy experiments were conducted at the Radioactive Isotope Beam Factory. Using a collaboratively constructed array of 12 composite Ge detector systems, excitation state half-lives through Doppler-shifted spectroscopy were measured to investigate various physical phenomena. Specifically, we analyzed the Doppler-shifted line shapes of specific spin transitions and decays in In, Sn, and Te, characterizing the array and establishing reliable analytical methods. The obtained half-lifes were compared with existing experimental results and theoretical calculations.