| Issue |
EPJ Web Conf.
Volume 324, 2025
V International Conference on Nuclear Structure and Dynamics (NSD2024)
|
|
|---|---|---|
| Article Number | 00019 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/epjconf/202532400019 | |
| Published online | 11 April 2025 | |
https://doi.org/10.1051/epjconf/202532400019
Electromagnetic dipole transitions in nuclei at finite temperature
1 Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
2 Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, 10000 Zagreb, Croatia
* e-mail: e.yuksel@surrey.ac.uk
Published online: 11 April 2025
Describing the properties of highly excited or hot nuclei remains as a major challenge both for nuclear theory and experiment. We developed self-consistent finite-temperature relativistic quasiparticle random phase approximation (FT-RQRPA) using the relativistic energy density functional with point-coupling interaction to study temperature effects on electromagnetic transitions. We investigate electric dipole (E1) and magnetic dipole (M1) transitions in calcium and tin nuclei at temperatures from T = 0 to 2 MeV. Our results show that both E1 and M1 responses change with temperature, with E1 strength undergoing slight modifications and new low-energy peaks emerging due to thermal blocking. The M1 strength shifts significantly to lower energies, and new M1 states emerge that are forbidden at zero temperature. These findings can be important for modeling gamma strength functions in astrophysical nuclear reactions.
© The Authors, published by EDP Sciences, 2025
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