Cross-section measurements of radiative proton-capture reactions in $^{112}$Cd at energies of astrophysical interest
| Autor: | Psaltis, A., Khaliel, A., Assimakopoulou, E. -M., Kanellakopoulos, A., Lagaki, V., Lykiardopoulou, M., Malami, E., Tsavalas, P., Zyriliou, A., Mertzimekis, T. J. |
|---|---|
| Rok vydání: | 2019 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.99.065807 |
| Popis: | Reactions involving the group of nuclei commonly known as p nuclei are part of the nucleosynthetic mechanisms at astrophysical sites. The $^{113}$In nucleus is such a case with several open questions regarding its origin at extreme stellar environments. In this work, the experimental study of the cross sections of the radiative proton-capture reaction $^{112}$Cd(p,$\gamma$)$^{113}$In is attempted for the first time at energies lying inside the Gamow window with an isotopically enriched $^{112}$Cd target. Two different techniques, the in-beam $\gamma$-ray spectroscopy and the activation method, have been applied. The latter method is required to account for the presence of a low-lying $^{113}$In isomer at 392 keV having a halflife of $\approx 100$ min. From the cross sections, the astrophysical S factors and the isomeric ratios have been additionally deduced. The experimental results are compared to detailed Hauser-Feshbach theoretical calculations using TALYS, and discussed in terms of their significance to the optical model potential involved. Comment: 12 pages, 13 Figures, Accepted for publication to Phys. Rev. C |
| Databáze: | arXiv |
| Externí odkaz: |
|