TY - JOUR
T1 - Angular-momentum conserved description of the proton decay from highly deformed 131Eu
AU - Chen, Yeruoxi
AU - Chen, Q. B.
AU - Qi, C.
N1 - Publisher Copyright:
© 2025 The Authors.
PY - 2026/1
Y1 - 2026/1
N2 - We investigate proton emission from the highly deformed nucleus 131Eu within the angular-momentum-conserving core-quasiparticle coupling (CQPC) model. The calculations reproduce well the observed energy spectra and decay properties, and demonstrate that the dominant emitting configuration originates from the d 3/2 spherical component of a deformed configuration, consistent with experimental assignments. Complementary calculations for the triaxially deformed nucleus 145Tm and the weakly deformed nucleus 151Lu further confirm that the CQPC framework provides a unified and reliable description of proton emission across a wide deformation range. The results highlight the importance of coherent single-particle-collective coupling in shaping proton decay from deformed nuclei beyond the drip line and provide a fresh perspective on the interpretation of decays traditionally assigned to deformed Nilsson orbitals.
AB - We investigate proton emission from the highly deformed nucleus 131Eu within the angular-momentum-conserving core-quasiparticle coupling (CQPC) model. The calculations reproduce well the observed energy spectra and decay properties, and demonstrate that the dominant emitting configuration originates from the d 3/2 spherical component of a deformed configuration, consistent with experimental assignments. Complementary calculations for the triaxially deformed nucleus 145Tm and the weakly deformed nucleus 151Lu further confirm that the CQPC framework provides a unified and reliable description of proton emission across a wide deformation range. The results highlight the importance of coherent single-particle-collective coupling in shaping proton decay from deformed nuclei beyond the drip line and provide a fresh perspective on the interpretation of decays traditionally assigned to deformed Nilsson orbitals.
KW - Angular-momentum conserved
KW - Core-quasiparticle coupling model
KW - Spectroscopic factor
UR - https://www.scopus.com/pages/publications/105025365993
U2 - 10.1016/j.physletb.2025.140106
DO - 10.1016/j.physletb.2025.140106
M3 - 文章
AN - SCOPUS:105025365993
SN - 0370-2693
VL - 872
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 140106
ER -