First direct measurement of the 64.5 keV resonance strength in $^{17}$O(p,$\gamma$)$^{18}$F reaction

التفاصيل البيبلوغرافية
العنوان: First direct measurement of the 64.5 keV resonance strength in $^{17}$O(p,$\gamma$)$^{18}$F reaction
المؤلفون: Gesuè, R. M., Ciani, G. F., Piatti, D., Boeltzig, A., Rapagnani, D., Aliotta, M., Ananna, C., Barbieri, L., Barile, F., Bemmerer, D., Best, A., Broggini, C., Bruno, C. G., Caciolli, A., Campostrini, M., Casaburo, F., Cavanna, F., Colombetti, P., Compagnucci, A., Corvisiero, P., Csedreki, L., Davinson, T., De Gregorio, G. M., Dell'Aquila, D., Depalo, R., Di Leva, A., Elekes, Z., Ferraro, F., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., Junker, M., Lugaro, M., Marigo, P., Marsh, J., Masha, E., Menegazzo, R., Mercogliano, D., Paticchio, V., Perrino, R., Prati, P., Rigato, V., Robb, D., Schiavulli, L., Sidhu, R. S., Skowronski, J., Straniero, O., Szücs, T., Zavatarelli, S.
سنة النشر: 2024
المجموعة: Nuclear Experiment
مصطلحات موضوعية: Nuclear Experiment
الوصف: The CNO cycle is one of the most important nuclear energy sources in stars. At temperatures of hydrostatic H-burning (20 MK $<$ T $<$ 80 MK) the $^{17}$O(p,$\gamma$)$^{18}$F reaction rate is dominated by the poorly constrained 64.5~keV resonance. Here we report on the first direct measurements of its resonance strength and of the direct capture contribution at 142 keV, performed with a new high sensitivity setup at LUNA. The present resonance strength of $\omega\gamma_{(p, \gamma)}$\textsuperscript{bare} = (30 $\pm$ 6\textsubscript{stat} $\pm$ 2\textsubscript{syst})~peV is about a factor of 2 higher than the values in literature, leading to a $\Gamma$\textsubscript{p}\textsuperscript{bare} = (34 $\pm$ 7\textsubscript{stat} $\pm$ 3\textsubscript{syst})~neV, in agreement with LUNA result from the (p,$\alpha$) channel. Such agreement strengthen our understanding of the oxygen isotopic ratios measured in red giant stars and in O-rich presolar grains.
نوع الوثيقة: Working Paper
DOI: 10.1103/PhysRevLett.133.052701
URL الوصول: http://arxiv.org/abs/2408.03015
رقم الأكسشن: edsarx.2408.03015
قاعدة البيانات: arXiv
الوصف
DOI:10.1103/PhysRevLett.133.052701