MASS MEASUREMENT OF 45Cr AND ITS IMPACT ON THE Ca–Sc CYCLE IN X-RAY BURSTS
MASS MEASUREMENT OF 45Cr AND ITS IMPACT ON THE Ca–Sc CYCLE IN X-RAY BURSTS
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DOI：
10.1088/2041-8205/766/1/l8
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发表时间：
2013-03
期刊：
影响因子：
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通讯作者：
Xunwang Yan;Xunwang Yan;Haisheng Xu;Y. Litvinov;Y. Litvinov;Yuhu Zhang;H. Schatz;X. Tu;
中科院分区：
文献类型：
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作者：
Xunwang Yan;Xunwang Yan;Haisheng Xu;Y. Litvinov;Y. Litvinov;Yuhu Zhang;H. Schatz;X. Tu;
在中国兰州的HIRFL-CSR装置上，用等离子体质谱技术测量了缺中子58 Ni弹丸碎片的质量。包括45 Cr核在内的一系列短寿命Tz = −3/2的核素的质量已经被测量，相对不确定度约为10−6-10−7。新的45 Cr质量被证明是模拟天体物理rp过程的关键。特别是，我们发现，在X射线爆发预测的钙钪循环的形成可以排除。
Masses of neutron-deficient 58Ni projectile fragments have been measured at the HIRFL-CSR facility in Lanzhou, China employing the isochronous mass spectrometry technique. Masses of a series of short-lived Tz = −3/2 nuclides including the 45Cr nucleus have been measured with a relative uncertainty of about 10−6–10−7. The new 45Cr mass turned out to be essential for modeling the astrophysical rp-process. In particular, we find that the formation of the predicted Ca–Sc cycle in X-ray bursts can be excluded.