2-14 Investigation of the Thermonuclear 18Ne(α, p)21Na Reaction Rate via Resonant Elastic Scattering of 21Na + p

• 作者: Chen Ruofu Chen Size D. Kahl Guo Bing H.Yamaguchi He Jianjun Hu Jun Ma Peng N. Iwasa S. Hayakawa S. Kubono T. Hashimoto T. Komatsubara T. Teranishi T. Yamada Tian Wendong Wang Hongwei Xu Shiwei Y. Togano Y.Wakabayashi Zhang Liyong
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 工学
• 关键词: VIA X-RAY source surface STAR total RANGE DAYS
• 年，卷（期）: 2014,（1）
• 页码范围: 46-48
• 页数: 3页
• 分类号: TP303

摘要

A nuclear astrophysics experiment was performed at CRIB (CNS low-energy Radioactive-Ion Beam separator)on Mar. 2011. The goal of this experiment is to study the reaction rate of 18Ne(,p)21Na reaction, which mightbe a key breakout reaction from the hot CNO cycle to rp-process in X-ray burst and nova. Yet its reaction rate ispoorly known.Explosive hydrogen burning is thought to be the main source of energy generation and a source of nucleosynthesisin X-ray burst and nova[1;2]. For example, XRBs are characterized by a sudden increase of X-ray emission withinonly a few seconds to a total energy output of about 1040 ergs, which is observed to repeat with some regularity.The recurrence time for single bursts can range from hours to days at the typical temperature of 0.4～2 GK. Thebursts have been interpreted as being generated by thermonuclear runaway on the surface of a neutron star thataccretes H- and He-rich material from a less evolved companion star in a close binary system. As shown in Fig. 1,under its typical temperature, the hydrogen burning in X-ray burst occurs from the hot CNO cycle: