The measurement of 4He photodisintegration with MAIKo active target
The measurement of 4He photodisintegration with MAIKo active target
复制标题
使用 MAIKo 活性靶标测量 4He 光崩解
DOI：
10.1088/1742-6596/863/1/012077
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
T. Kawabata and M. Tsumura
中科院分区：
文献类型：
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作者：
M. Murata;S. Adachi;H. Akimune;T. Furuno;T. Kawabata and M. Tsumura
4He的光解反应即4He(γ，pt)和4He(γ，3He)n有望成为宇宙中核合成的线索，但在低能区，前人的实验研究结果仍然是相互矛盾的。我们在新斯巴鲁同步辐射设施中用基于TPC的Maiko有源靶测量了这些反应。Maiko使我们能够测量在全固体角度上发射的低能量衰变粒子。在测量过程中，准单色脉冲光子束被照射到Maiko上。数据分析仍在进行中。利用一种新的跟踪算法来选择光解事件，并通过NaI(Tl)光束监视器获得光子束的总通量。
The photodisintegration reactions of4He, i.e.,4He(γ,pt) and4He(γ,3He)n, are expected to be a clue to the nucleosynthesis in the universe, but the results of previous experimental studies are still contradictory in low energy region. We measured these reactions with the TPC-based MAIKo active target at the New SUBARU synchrotron radiation facility. MAIKo enables us to measure the low-energy decay particles emitted over the full-solid angle. The quasi-monochromatic pulsed photon beams were irradiated on MAIKo during the measurement. The data analysis is still in progress. The photodisintegration events were selected using a new tracking algorithm developed for this measurement, and the total flux of photon beams was obtained by the NaI (Tl) beam monitor.