Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New Mg-22(alpha, p)Al-25 Reaction Rate Determined at the Gamow Energy
Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New Mg-22(alpha, p)Al-25 Reaction Rate Determined at the Gamow Energy
复制标题
利用伽莫夫能量测定的新 Mg-22(α, p)Al-25 反应速率改进光球半径膨胀和时钟 I 型 X 射线爆发模型
DOI：
10.1103/physrevlett.127.172701
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发表时间：
2021
影响因子：
8.6
通讯作者：
K
中科院分区：
文献类型：
--
作者：
Hu J.;Yamaguchi H.;Lam Y. H.;Heger A.;Kahl D.;Jacobs A. M.;Johnston Z.;Xu S. W.;Zhang N. T.;Ma S. B.;Ru L. H.;Liu E. Q.;Liu T.;Hayakawa S.;Yang L.;Shimizu H.;Hamill C. B.;Murphy A. St J.;Su J.;Fang X.;Chae K. Y.;Kwag M. S.;Cha S. M.;Duy N. N.;Uyen N. K.;K
我们报告的第一个（中）弹性散射测量的能力，选择和测量在一个广泛的能量范围内的质子共振，在I型X射线爆发能量的反应。我们测量了阈值以上的四个共振的自旋宇称，发现它们强烈影响速率。新的速率提出了一个最先进的模型，以显着地再现光变曲线的GSclocked爆发的平均偏差，并允许我们发现的吸积包层的光球半径膨胀爆发的He丰度和分支的优势之间的强相关性。
We report the first (in)elastic scattering measurement ofwith the capability to select and measure in a broad energy range the proton resonances incontributing to thereaction at type I x-ray burst energies. We measured spin-parities of four resonances above thethreshold ofthat are found to strongly impact therate. The new rate advances a state-of-the-art model to remarkably reproduce light curves of the GSclocked burster with mean deviationand permits us to discover a strong correlation between the He abundance in the accreting envelope of the photospheric radius expansion burster and the dominance ofbranch.