Direct measurement of the 19F(p,a0)16O reaction at Ecm=0.4-0.9 MeV using the LHASA detector array

被引：5
|
作者：
Guardo, G. L. [1 ]
Petruse, T. [2 ,3 ]
Lattuada, D. [1 ,4 ]
La Cognata, M. [1 ]
Balabanski, D. L. [2 ]
Aciksoz, E. [2 ]
Acosta, L. [5 ]
Capponi, L. [2 ]
Carbone, D. [1 ]
Cherubini, S. [1 ,6 ]
Choudhury, D. [2 ]
D'Agata, G. [1 ,6 ]
Di Pietro, A. [1 ]
Figuera, P. [1 ]
Gulino, M. [1 ,4 ]
Kilik, A. I. [7 ]
La Commara, M. [8 ]
Lamia, L. [1 ,6 ,9 ]
Matei, C. [2 ]
Palmerini, S. [10 ,11 ]
Pizzone, R. G. [1 ]
Rapisarda, G. G. [1 ,6 ,9 ]
Romano, S. [1 ,6 ,9 ]
Sergi, M. L. [1 ,6 ,9 ]
Soderstrom, P. -A. [2 ]
Sparta, R. [1 ]
Tumino, A. [1 ,4 ]
Vinals, S. [12 ]
机构：
[1] Lab Nazl Sud INFN, Catania, Italy
[2] IFIN HH, Extreme Light Infrastruct Nucl Phys, Magurele, Romania
[3] Univ Politehn, Scoala Doctorala Ingn Aplicatiile Laserilor Accel, Bucharest, Romania
[4] Univ Enna Kore, Enna, Italy
[5] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, Mexico
[6] Univ Catania, Dipartimento Fis & Astron E Majorana, Catania, Italy
[7] Nucl Phys Inst ASCR, Rez, Czech Republic
[8] Univ Napoli Federico II, Dipartimento Fis, Naples, Italy
[9] Ctr Siciliano Fis Nucleare & Struttura Mat CSFNSM, Catania, Italy
[10] Univ Perugia, Dipartimento Fis & Geol, Perugia, Italy
[11] INFN Sez Perugia, Perugia, Italy
[12] CSIC, Inst Estruct Mat, Madrid, Spain
来源：
EUROPEAN PHYSICAL JOURNAL A | 2023年 / 59卷 / 03期
基金：
欧盟地平线“2020”;
关键词：
ALPHA(0))O-16 REACTION; ALPHA)O-16 REACTION; F-19(P; FLUORINE; STARS; ROOT;
D O I：
10.1140/epja/s10050-023-00957-1
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The 1(19)F(p,a(0))(16) reaction is of paramount importance for understanding the fluorine abundance in the outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. Theoretical models overestimate F abundances in AGB stars with respect to the observed values, thus calling for further investigation of the reactions involved in the fluorine nucleosynthesis. In the last years, new direct and indirect measurements improved significantly the knowledge of the F-19(p,a(0))(16) cross section at deeply sub-Coulomb energies (below 0.8 MeV). Those data are larger by a factor of about 1.4 with respect to the previous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. In order to solve these discrepancies, here we present a new direct experiment performed using a silicon strip detector array (LHASA - Large High-resolution Array of Silicon for Astrophysics). Our results clearly confirm the trend of the latest experimental data in the energy region of interest, pointing towards a larger S-factor value than the one reported in the NACRE compilation.
引用
收藏
页数：5
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