Development of a Monte Carlo code for the data analysis of the 18F(p, α)15O reaction at astrophysical energies

被引：0

作者：

Caruso, A. ^{[1
,2
]}

Cherubini, S. ^{[1
,2
]}

Spitaleri, C. ^{[1
,2
]}

Crucilla, V. ^{[2
]}

Gulino, M. ^{[2
,3
]}

La Cognata, M. ^{[1
,2
]}

Lamia, L. ^{[1
,2
]}

Rapisarda, G. ^{[1
,2
]}

Romano, S. ^{[1
,2
]}

Sergi, M. L. ^{[1
,2
]}

Kubono, S. ^{[4
,5
]}

Yamaguchi, H. ^{[5
]}

Hayakawa, S. ^{[5
]}

Wakabayashi, Y. ^{[5
]}

Iwasa, N. ^{[6
]}

Kato, S. ^{[7
]}

Komatsubara, T. ^{[8
]}

Teranishi, T. ^{[9
]}

Coc, A. ^{[10
]}

Hammache, F. ^{[11
]}

de Sereville, N. ^{[11
]}

机构：

[1] Dipartimento Fis & Astron, Catania, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95129 Catania, Italy

[3] Univ Enna KORE, Enna, Italy

[4] RIKEN, Wako, Saitama, Japan

[5] Univ Tokyo, Ctr Nucl Study, Tokyo 1138654, Japan

[6] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan

[7] Yamagata Univ, Dept Phys, Yamagata 990, Japan

[8] Inst for Basic Sci Korea, Rare Isotope Sci Project, Taejon 305811, South Korea

[9] Kyushu Univ, Dept Phys, Fukuoka 812, Japan

[10] Ctr Spectrometrie Nucl & Spectrometrie Masse, Orsay, France

[11] IN2P3, Inst Phys Nucl, Orsay, France

来源：

EXOTIC NUCLEI AND NUCLEAR/PARTICLE ASTROPHYSICS (V). FROM NUCLEI TO STARS | 2015年 / 1645卷

关键词：

Novae; Nuclear Reactions; Nucleosynthesis;

D O I：

10.1063/1.4909591

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Novae are astrophysical events (violent explosion) occurring in close binary systems consisting of a white dwarf and a main-sequence star or a star in a more advanced stage of evolution. They are called "narrow systems" because the two components interact with each other: there is a process of mass exchange with resulting in the transfer of matter from the companion star to the white dwarf, leading to the formation of this last of the so-called accretion disk, rich mainly of hydrogen. Over time, more and more material accumulates until the pressure and the temperature reached are sufficient to trigger nuclear fusion reactions, rapidly converting a large part of the hydrogen into heavier elements. The products of "hot hydrogen burning" are then placed in the interstellar medium as a result of violent explosions. Studies on the element abundances observed in these events can provide important information about the stages of evolution stellar. During the outbursts of novae some radioactive isotopes are synthesized: in particular, the decay of short-lived nuclei such as N-13 and F-18 with subsequent emission of gamma radiation energy below 511 keV. The gamma rays from products electron-positron annihilation of positrons emitted in the decay of F-18 are the most abundant and the first observable as soon as the atmosphere of the nova starts to become transparent to gamma radiation. Hence the importance of the study of nuclear reactions that lead both to the formation and to the destruction of F-18. Among these, the F-18(p, alpha)O-15 reaction is one of the main channels of destruction. This reaction was then studied at energies of astrophysical interest. The experiment done at Riken, Japan, has as its objective the study of the F-18(p, alpha)O-15 reaction, using a beam of F-18 produced at CRIB, to derive important information about the phenomenon of novae. In tis paper we present the experimental technique and the Monte Carlo code developed to be used in the data analysis process.

引用

页码：306 / 310

页数：5

共 6 条

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Cherubini, S
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