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arXiv 0706.2349nucl-exastro-ph
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$^{15}$ O($α$,$γ$)$^{19}$ Ne爆发反应及其对X射线爆发的影响

The $^{15}$O($α$,$γ$)$^{19}$Ne Breakout Reaction and Impact on X-Ray Bursts

W. P. Tan, J. L. Fisker, J. Goerres, M. Couder, M. Wiescher

摘要:

爆发反应$^{15}$ O($α,γ$)$^{19}$ Ne调节热CNO循环和rp过程之间的流动,对于解释X射线爆发的爆发幅度和周期性至关重要。我们首次成功地测量了通过$^{19}$ F($^3$ He,t)$^{19}$ Ne填充的$^{19}$ Ne中相关态的临界$α$衰变分支比.基于实验结果和我们以前对这些态的寿命测量,我们导出了$^{15}$ O($α,γ$)$^{19}$ Ne的第一实验速率.我们的实验结果的爆发模式和周期性的吸积率范围内的影响进行了分析。

英文摘要:

The breakout reaction $^{15}$O($α,γ$)$^{19}$Ne, which regulates the flow between the hot CNO cycle and the rp-process, is critical for the explanation of the burst amplitude and periodicity of X-ray bursters. We report on the first successful measurement of the critical $α$-decay branching ratios of relevant states in $^{19}$Ne populated via $^{19}$F($^3$He,t)$^{19}$Ne. Based on the experimental results and our previous lifetime measurements of these states, we derive the first experimental rate of $^{15}$O($α,γ$)$^{19}$Ne. The impact of our experimental results on the burst pattern and periodicity for a range of accretion rates is analyzed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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