PreprintCC BY 4.0arXiv
Development of the γ strength function with the neutron number
Abstract
The M1 and E2 γ strength functions (γsf) have been calculated for extended series of the Mo, Fe, Sn, Ge and Gd isotopes using the conventional spherical shell model (SSM) and, as a new tool, the triaxial projected shell model (TPSM). For almost all cases the strong enhancement of the M1 γsf (low energy magnetic radiation-LEMAR) is found. In the mid-shell region, a bimodal structure of the LEMAR spike and a bump around 3 MeV, interpreted as the scissors resonance (SR), develops. The combination of LEMAR and the SR is generated by the splitting of the spherical single particle multiplets of given j caused by deformation and their fragmentation over nearby quasiparticle configurations.
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BibTeX
@misc{frauendorf2026development,
title = {{Development of the γ strength function with the neutron number}},
author = {Stefan Frauendorf and Ronald Schwengner and Gowhar Bhat and Javid Sheikh},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.10398},
eprint = {2609.10398},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.10398},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Development of the γ strength function with the neutron number
AU - Stefan Frauendorf
AU - Ronald Schwengner
AU - Gowhar Bhat
AU - Javid Sheikh
PY - 2026
DA - 2026/09/09
PB - arXiv
DO - 10.48550/arxiv.2609.10398
UR - https://arxiv.org/abs/2609.10398
AB - The M1 and E2 γ strength functions (γsf) have been calculated for extended series of the Mo, Fe, Sn, Ge and Gd isotopes using the conventional spherical shell model (SSM) and, as a new tool, the triaxial projected shell model (TPSM). For almost all cases the strong enhancement of the M1 γsf (low energy magnetic radiation-LEMAR) is found. In the mid-shell region, a bimodal structure of the LEMAR spike and a bump around 3 MeV, interpreted as the scissors resonance (SR), develops. The combination of LEMAR and the SR is generated by the splitting of the spherical single particle multiplets of given j caused by deformation and their fragmentation over nearby quasiparticle configurations.
ER -