PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Nuclear and particle astrophysics
Photo-disintegration of N=Z light nuclei using SRC-based approach
R. Dalal* and R. Beniwal
Full text: pdf
Pre-published on: March 08, 2022
Published on: May 24, 2022
The outcome of any possible nucleosynthesis scenario is strongly affected by the photodisintegration of nuclei through (γ, N) and (γ, np) channels for Eγ > 10 MeV to a few hundred MeV. Though there is a wide range of phenomenological models for the estimation of excitation functions in this energy region, the exact photodisintegration mechanism is not well understood. The shell-model based approaches have not been successful even for the light nuclei of astrophysical importance like 6Li. A simple SRC-based approach is employed to calculate the photo-disintegration of light nuclei in the quasideuteron region. Combining the Gunn-Irving photo-disintegration for α-cluster, the proposed approach is used to calculate the total photo-disintegration cross-sections for Eγ between 10 to 140 MeV for many of the N=Z light nuclei. Contrary to general perception, the quasideuteron photo-disintegration contribution starts in the GDR region itself and dominates for Eγ > 50 MeV. Along with many interesting new insights, the derivation of the Levinger formula is obtained without any additional assumptions. A significant fraction of the photo-disintegration cross-section in GDR region may be accounted by the contribution of the quasi-α degree of freedom which decreases for higher Eγ. The present work suggests an alternative and viable description of photodisintegration for N=Z nuclei.
DOI: https://doi.org/10.22323/1.380.0323
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.