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

A. Caruso, S. Cherubini, C. Spitaleri, V. Crucillà, M. Gulino, M. La Cognata, L. Lamia, G. Rapisarda, S. Romano, Ml Sergi, S. Kubono, H. Yamaguchi, S. Hayakawa, Y. Wakabayashi, N. Iwasa, S. Kato, T. Komatsubara, T. Teranishi, A. Coc, F. HammacheN. De Séréville

研究成果: Conference contribution

抄録

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 13N and 18F 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 18F 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 18F. Among these, the 18F(p,α)15O 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 18F(p,α)15O reaction, using a beam of 18F produced at CRIB, to derive important information about the phenomenon of novae. In this paper we present the experimental technique and the Monte Carlo code developed to be used in the data analysis process.

本文言語English
ホスト出版物のタイトルExotic Nuclei and Nuclear/Particle Astrophysics (V). From Nuclei to Stars - Carpathian Summer School of Physics 2014, CSSP 2014
編集者Daniela Chesneanu, Livius Trache, Calin Alexandru Ur
出版社American Institute of Physics Inc.
ページ306-310
ページ数5
ISBN(電子版)9780735412842
DOI
出版ステータスPublished - 2015
イベントCarpathian Summer School of Physics 2014: Exotic Nuclei and Nuclear/Particle Astrophysics (V). From Nuclei to Stars, CSSP 2014 - Sinaia, Romania
継続期間: 2014 7 132014 7 26

出版物シリーズ

名前AIP Conference Proceedings
1645
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

ConferenceCarpathian Summer School of Physics 2014: Exotic Nuclei and Nuclear/Particle Astrophysics (V). From Nuclei to Stars, CSSP 2014
国/地域Romania
CitySinaia
Period14/7/1314/7/26

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Development of a Monte Carlo code for the data analysis of the <sup>18</sup>F(p,α) <sup>15</sup>O reaction at astrophysical energies」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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