Electron-capture modes with realistic nuclear structure calculations
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Abstract
Nuclear electron capture posses prominent position among other weak interaction processes occuring in explosive nucleosynthesis. In particular, this process plays important role in the core-colapse of massive stars by modifying the electron to baryon ratio Ye. From a nuclear theory point of view, such processes may be studied by using the same nuclear methods (e.g. the quasi-particle random phase approximation, QRPA), employed in the present work with these used for the one-body charge changing nuclear reactions (β-decay modes, charged-current electron-neutrino absorption by nuclei, etc). In this work we calculate e−-capture cross sections on 56Fe using two different approaches. At first, original cross section calculations are perfored by using the pn-QRPA method considering all the accessible transitions of the final nucleus 56Mn. Secondly, we evaluate the Gamow-Teller strength distributions and obtain the cross sections at the limit of zero-momentum transfer. The agreement between the two methods is very good.
Article Details
- How to Cite
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Giannaka, P. G., & Kosmas, T. S. (2019). Electron-capture modes with realistic nuclear structure calculations. HNPS Advances in Nuclear Physics, 21, 4–10. https://doi.org/10.12681/hnps.1997
- Issue
- Vol. 21 (2013): HNPS2013
- Section
- Oral contributions