Shell-model description for the first-forbidden β− decay of 207Hg into the one-proton-hole nucleus 207Tl

Shell model study of first-forbidden beta decay around 208Pb

“…The expression for the shape factor, i.e., C(w e ) for forbidden transition and other details can be obtained from earlier works [6,7,8,9,10].…”

Systematic shell-model study of Rn isotopes with A = 207 to 216 and isomeric states

“…In KHH7B interaction, the cross shell two-body matrix elements (TBMEs) were generated by the G-matrix potential (H7B) [44], while the proton-neutron, hole-hole, and particle-particle TBMEs are taken from Kuo-Herling interaction [40] as modified in the reference [38]. Previously, shell model results using KHH7B interaction are reported in [15,[32][33][34]. For KHH7B, we have completely filled proton orbitals below Z = 82, while neutrons are only allowed to occupy the orbitals below N = 126 for A = 207-212 and above N = 126 for A = 213-216.…”

“…This state is believed to be arising from mixing of the octupole vibration with a 3 − member of the πh 3 9/2 i 13/2 multiplet. There have been several theoretical studies done in this mass region [25][26][27][28][29][30][31][32][33][34]. McGrory and Kuo [25] have reported the structure of the nuclei [204][205][206] Pb, [210][211][212] Pb, 210 Po, 211 At, and 212 Rn with few valence nucleons away from the 204 Pb core using conventional nuclear shellmodel several decades before.…”

Emergence of an island of extreme nuclear isomerism at high excitation near 208Pb

“…The 22 valence neutrons have been allowed to occupy only the 0i 13/2 , 2p 3/2 , 1 f 5/2 and 2p 1/2 orbitals below N = 126. Results of shell-model calculations using the KHH7B interaction for other nuclei in this region have been recently reported [16,[39][40][41].…”