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首页> 外文期刊>Physical review letters >Measurement of the ~(18)Ne(α, p_0)~(21)Na Reaction Cross Section in the Burning Energy Region for X-Ray Bursts
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Measurement of the ~(18)Ne(α, p_0)~(21)Na Reaction Cross Section in the Burning Energy Region for X-Ray Bursts

机译：X射线爆炸在燃烧能量区中〜（18）Ne（α，p_0）〜（21）Na反应截面的测量

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摘要

The~(18)Ne(α, p)~(21)Na reaction provides one of the main HCNO-breakout routes into the rp process in x-ray bursts. The~(18)Ne(α, p_0)~(21)Na reaction cross section has been determined for the first time in the Gamow energy region for peak temperatures T ～ 2 GK by measuring its time-reversal reaction ~(21)Na(/p, α)~(18)Ne in inverse kinematics. The astrophysical rate for ground-state to ground-state transitions was found to be a factor of 2 lower than Hauser-Feshbach theoretical predictions. Our reduced rate will affect the physical conditions under which breakout from the HCNO cycles occurs via the ~(18)Ne(α, p)~(21)Na reaction.
机译：〜（18）Ne（α，p）〜（21）Na反应在X射线爆发中提供了进入rp过程的主要HCNO突破途径之一。通过测量时间逆向反应〜（21）Na，在高峰能量区域中首次确定〜（18）Ne（α，p_0）〜（21）Na反应截面（/ p，α）〜（18）Ne逆运动学。发现从基态到基态跃迁的天体速率比Hauser-Feshbach理论预测值低2倍。我们降低的速率将影响通过〜（18）Ne（α，p）〜（21）Na反应从HCNO循环中爆发的物理条件。

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  • 来源
    《Physical review letters》 |2012年第24期|p.242701.1-242701.5|共5页
  • 作者

    P. J. C. Salter; M. Aliotta; T. Davinson; H. Al Falou; A. Chen; B. Davids; B. R. Fulton; N. Galinski; D. Howell; G. Lotay; P. Machule; A. StJ. Murphy; C. Ruiz; S. Sjue; M. Taggart; P. Walden; P. J. Woods;

  • 作者单位

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    Department of Physics, University of York, York YO10 5DD, United Kingdom;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada,Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada,Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada;

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    Department of Physics, University of York, York YO10 5DD, United Kingdom;

    TRIUMF, Vancouver, British Columbia V6T 2A3, Canada;

    SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    reactions induced by unstable nuclei; transfer reactions;

    机译：不稳定核引起的反应;转移反应;

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