First direct measurement of the $^{13}$N($\alpha$,$p$)$^{16}$O reaction relevant for core-collapse supernovae nucleosynthesis
| Autor: | Jayatissa, H., Avila, M. L., Rehm, K. E., Talwar, R., Mohr, P., Auranen, K., Chen, J., Gorelov, D. A., Hoffman, C. R., Jiang, C. L., Kay, B. P., Kuvin, S. A., Santiago-Gonzalez, D. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Phys. Rev. C 105, L042802 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.105.L042802 |
| Popis: | Understanding the explosion mechanism of a core-collapse supernova (CCSN) is important to accurately model CCSN scenarios for different progenitor stars using model-observation comparisons. The uncertainties of various nuclear reaction rates relevant for CCSN scenarios strongly affect the accuracy of these stellar models. Out of these reactions, the $^{13}$N($\alpha$,$p$)$^{16}$O reaction has been found to affect various stages of a CCSN at varying temperatures. This work presents the first direct measurement of the $^{13}$N($\alpha$,$p$)$^{16}$O reaction performed using a 34.6 MeV beam of radioactive $^{13}$N ions and the active-target detector MUSIC (MUlti-Sampling Ionization Chamber) at Argonne National Laboratory. The resulting total $^{13}$N($\alpha$,$p$)$^{16}$O reaction cross sections from this measurement in the center-of-mass energy range of 3.26 - 6.02 MeV are presented and compared with calculations using the Hauser-Feshbach formalism. Uncertainties in the reaction rate have been dramatically reduced at CCSN temperatures. Comment: References 27 and 31 has been changed |
| Databáze: | arXiv |
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