Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region
| العنوان: | Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region |
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| المؤلفون: | G. G. Kiss, A. Vitéz-Sveiczer, Y. Saito, A. Tarifeño-Saldivia, M. Pallas, J. L. Tain, I. Dillmann, J. Agramunt, A. Algora, C. Domingo-Pardo, A. Estrade, C. Appleton, J. M. Allmond, P. Aguilera, H. Baba, N. T. Brewer, C. Bruno, R. Caballero-Folch, F. Calvino, P. J. Coleman-Smith, G. Cortes, T. Davinson, N. Fukuda, Z. Ge, S. Go, C. J. Griffin, R. K. Grzywacz, O. Hall, A. Horváth, J. Ha, L. J. Harkness-Brennan, T. Isobe, D. Kahl, T. T. King, A. Korgul, S. Kovács, R. Krücken, S. Kubono, M. Labiche, J. Liu, J. Liang, M. Madurga, K. Miernik, F. Molina, A. I. Morales, M. R. Mumpower, E. Nacher, A. Navarro, N. Nepal, S. Nishimura, M. Piersa-Siłkowska, V. Phong, B. C. Rasco, B. Rubio, K. P. Rykaczewski, J. Romero-Barrientos, H. Sakurai, L. Sexton, Y. Shimizu, M. Singh, T. Sprouse, T. Sumikama, R. Surman, H. Suzuki, T. N. Szegedi, H. Takeda, A. Tolosa, K. Wang, M. Wolinska-Cichocka, P. Woods, R. Yokoyama, Z. Xu |
| المساهمون: | Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Doctorat en Enginyeria Nuclear i de les Radiacions Ionitzants, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group |
| المصدر: | The Astrophysical Journal. 936:107 |
| بيانات النشر: | American Astronomical Society, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Física [Àrees temàtiques de la UPC], Space and Planetary Science, Astronomy and Astrophysics, Stars, Nucleosynthesis, Estels, Nucleosíntesi |
| الوصف: | The β-delayed neutron-emission probabilities of 28 exotic neutron-rich isotopes of Pm, Sm, Eu, and Gd were measured for the first time at RIKEN Nishina Center using the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array. The existing β-decay half-life (T 1/2) database was significantly increased toward more neutron-rich isotopes, and uncertainties for previously measured values were decreased. The new data not only constrain the theoretical predictions of half-lives and β-delayed neutron-emission probabilities, but also allow for probing the mechanisms of formation of the high-mass wing of the rare-earth peak located at A ≈ 160 in the r-process abundance distribution through astrophysical reaction network calculations. An uncertainty quantification of the calculated abundance patterns with the new data shows a reduction of the uncertainty in the rare-earth peak region. The newly introduced variance-based sensitivity analysis method offers valuable insight into the influence of important nuclear physics inputs on the calculated abundance patterns. The analysis has identified the half-lives of 168Sm and of several gadolinium isotopes as some of the key variables among the current experimental data to understand the remaining abundance uncertainty at A = 167–172. |
| وصف الملف: | application/pdf |
| تدمد: | 1538-4357 0004-637X |
| DOI: | 10.3847/1538-4357/ac80fc |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3327e225feb1c49ab929b9377defeb61 https://doi.org/10.3847/1538-4357/ac80fc |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....3327e225feb1c49ab929b9377defeb61 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15384357 0004637X |
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| DOI: | 10.3847/1538-4357/ac80fc |