Measurement of the 3-α decay from the Hoyle and the broad 10 MeV states in12C
Measurement of the 3-α decay from the Hoyle and the broad 10 MeV states in12C
复制标题
霍伊尔 3-α 衰变和 12C 中宽 10 MeV 态的测量
DOI：
10.1088/1742-6596/863/1/012019
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
M. Itoh et al.（全13名中11番目）
中科院分区：
文献类型：
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作者：
M. Itoh et al.（全13名中11番目）
利用12C (12C, 3α) 12C反应在e12c = 110 MeV时的逆运动学方法测量了12C (12C, 3α) 12C在12C= 110 MeV时的霍伊尔衰变和宽10mev态的3α衰变。在测量霍伊尔态时，直接衰减的上限提高到0.2%。这与最近报道的0.9%的非零值不一致，但比3-α模型预测的直接衰变分支大一个数量级。得到了宽10 MeV态序次衰减的分支比。它们比RCNP实验中得到的结果要高，因为它们包含了更高的多极分量的贡献。他们的贡献将被估计。
The measurements of the 3-α decay from the Hoyle and the broad 10 MeV state in 12 C have been performed using an inverse kinematic method of the 12 C (12 C, 3α) 12 C reaction at E 12C= 110 MeV. In the measurement of the Hoyle state, the upper limit of the direct decay was improved to be 0.2%. This was inconsistent with the recent reported nonzero value of 0.9%, but an order larger than the direct decay branch predicted in the 3-α model. The branching ratios of the sequtial decay for the broad 10 MeV state were also obtained. They were higher than those obtained in the RCNP experiment, since they contained the contributions of higer multipole components. Their contributions will be estimated.