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Improved direct measurement of low-energy resonances in the $^{21}$Ne(p,$γ$)$^{22}$Na reaction

Fuente: arXiv

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Main Authors:	Sidhu, R. S., Casaburo, F., Masha, E., Aliotta, M., Ananna, C., Barbieri, L., Barile, F., Baron, C., Bemmerer, D., Best, A., Biassisi, R., Boeltzig, A., Bonnel, R., Broggini, C., Bruno, C. G., Caciolli, A., Campostrini, M., Cavanna, F., Chillery, T., Ciani, G. F., Colombetti, P., Compagnucci, A., Corvisiero, P., Csedreki, L., Davinson, T., Depalo, R., Di Leva, A., D'Ottavi, A., Elekes, Z., Ferraro, F., Formicola, A., Fulop, Zs., Gervino, G., Gesue, R., Gosta, G., Guglielmetti, A., Gustavino, C., Gyurky, Gy., Imbriani, G., Jones, J., Jose, J., Junker, M., Lugaro, M., Marigo, P., Marsh, J., Menegazzo, R., Mercogliano, D., Piatti, D., Prati, P., Rapagnani, D., Rigato, V., Robb, D., Rossi, M., Sariyal, R., Skowronski, J., Straniero, O., Szucs, T., Turkat, S., Vagnoni, M., Zavatarelli, S.
Format:	Preprint
Published:	2025
Subjects:	Nuclear Experiment High Energy Physics - Experiment
Online Access:	Acceder al recurso
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_version_	1866913864044511232
author	Sidhu, R. S. Casaburo, F. Masha, E. Aliotta, M. Ananna, C. Barbieri, L. Barile, F. Baron, C. Bemmerer, D. Best, A. Biassisi, R. Boeltzig, A. Bonnel, R. Broggini, C. Bruno, C. G. Caciolli, A. Campostrini, M. Cavanna, F. Chillery, T. Ciani, G. F. Colombetti, P. Compagnucci, A. Corvisiero, P. Csedreki, L. Davinson, T. Depalo, R. Di Leva, A. D'Ottavi, A. Elekes, Z. Ferraro, F. Formicola, A. Fulop, Zs. Gervino, G. Gesue, R. Gosta, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Jones, J. Jose, J. Junker, M. Lugaro, M. Marigo, P. Marsh, J. Menegazzo, R. Mercogliano, D. Piatti, D. Prati, P. Rapagnani, D. Rigato, V. Robb, D. Rossi, M. Sariyal, R. Skowronski, J. Straniero, O. Szucs, T. Turkat, S. Vagnoni, M. Zavatarelli, S.
author_facet	Sidhu, R. S. Casaburo, F. Masha, E. Aliotta, M. Ananna, C. Barbieri, L. Barile, F. Baron, C. Bemmerer, D. Best, A. Biassisi, R. Boeltzig, A. Bonnel, R. Broggini, C. Bruno, C. G. Caciolli, A. Campostrini, M. Cavanna, F. Chillery, T. Ciani, G. F. Colombetti, P. Compagnucci, A. Corvisiero, P. Csedreki, L. Davinson, T. Depalo, R. Di Leva, A. D'Ottavi, A. Elekes, Z. Ferraro, F. Formicola, A. Fulop, Zs. Gervino, G. Gesue, R. Gosta, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Jones, J. Jose, J. Junker, M. Lugaro, M. Marigo, P. Marsh, J. Menegazzo, R. Mercogliano, D. Piatti, D. Prati, P. Rapagnani, D. Rigato, V. Robb, D. Rossi, M. Sariyal, R. Skowronski, J. Straniero, O. Szucs, T. Turkat, S. Vagnoni, M. Zavatarelli, S.
contents	In the nova temperature range, 0.1 GK $< T <$ 0.4 GK, several low-energy resonances dominate the $^{21}$Ne(p,$γ$)$^{22}$Na reaction rate, which is currently affected by large uncertainties. We present a high-precision study of the resonances at $E^{\rm{lab}}_{\rm{r}}$ = 127.3, 271.4, 272.3, 291.5, and 352.6 keV, measured directly at the Laboratory for Underground Nuclear Astrophysics in Italy. The strengths of the 127.3, 271.4, and 291.5 keV resonances are consistent with previous measurements within 1$σ$. However, for the 272.3 keV and 352.6 keV resonances, we report strength values of (129.9 $\pm$ 5.8) meV and (14.9 $\pm$ 0.8) meV, respectively, more than a factor of 1.5 higher than literature values. In addition, we report on new branching ratios for the 127.3, 272.3, and 352.6 keV resonances, leading to updated decay schemes. Finally, we present a revised thermonuclear reaction rate and investigate its impact on the NeNa nucleosynthesis.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_22426
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Improved direct measurement of low-energy resonances in the $^{21}$Ne(p,$γ$)$^{22}$Na reaction Sidhu, R. S. Casaburo, F. Masha, E. Aliotta, M. Ananna, C. Barbieri, L. Barile, F. Baron, C. Bemmerer, D. Best, A. Biassisi, R. Boeltzig, A. Bonnel, R. Broggini, C. Bruno, C. G. Caciolli, A. Campostrini, M. Cavanna, F. Chillery, T. Ciani, G. F. Colombetti, P. Compagnucci, A. Corvisiero, P. Csedreki, L. Davinson, T. Depalo, R. Di Leva, A. D'Ottavi, A. Elekes, Z. Ferraro, F. Formicola, A. Fulop, Zs. Gervino, G. Gesue, R. Gosta, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Jones, J. Jose, J. Junker, M. Lugaro, M. Marigo, P. Marsh, J. Menegazzo, R. Mercogliano, D. Piatti, D. Prati, P. Rapagnani, D. Rigato, V. Robb, D. Rossi, M. Sariyal, R. Skowronski, J. Straniero, O. Szucs, T. Turkat, S. Vagnoni, M. Zavatarelli, S. Nuclear Experiment High Energy Physics - Experiment In the nova temperature range, 0.1 GK $< T <$ 0.4 GK, several low-energy resonances dominate the $^{21}$Ne(p,$γ$)$^{22}$Na reaction rate, which is currently affected by large uncertainties. We present a high-precision study of the resonances at $E^{\rm{lab}}_{\rm{r}}$ = 127.3, 271.4, 272.3, 291.5, and 352.6 keV, measured directly at the Laboratory for Underground Nuclear Astrophysics in Italy. The strengths of the 127.3, 271.4, and 291.5 keV resonances are consistent with previous measurements within 1$σ$. However, for the 272.3 keV and 352.6 keV resonances, we report strength values of (129.9 $\pm$ 5.8) meV and (14.9 $\pm$ 0.8) meV, respectively, more than a factor of 1.5 higher than literature values. In addition, we report on new branching ratios for the 127.3, 272.3, and 352.6 keV resonances, leading to updated decay schemes. Finally, we present a revised thermonuclear reaction rate and investigate its impact on the NeNa nucleosynthesis.
title	Improved direct measurement of low-energy resonances in the $^{21}$Ne(p,$γ$)$^{22}$Na reaction
topic	Nuclear Experiment High Energy Physics - Experiment
url	https://arxiv.org/abs/2505.22426