~(15)O次级束的产生
Production of ~(15)O Secondary Beam for Measurements of Reactions of Nuclear Astrophysical Interests
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摘要: 在北京HI13串列加速器次级束流线上利用2H(14N,15O)n逆运动学反应产生了15O次级束。经准直后,在焦平面位置处的15O次级束的能量为(74.3±0.7)MeV,纯度可达50%,强度约为80pnA-1·s-1。利用15O次级束可实现对核天体物理高温CNO循环及其泄漏过程中若干关键反应的逆运动学实验测量。Abstract: A 15O secondary beam was produced via 2H( 14N, 15O*)n reaction in inverse kinematics on the secondary beam facility at the HI-13 tandem accelerator. The energy of the 15O secondary beam is (74.3±0.7) MeV, with a purity of 50% and the intensity of about 80 pnA -1·s -1 after collimation. We plan to use the 15O beam to measure key reactions involved in the nucleosynthesis process at several high-temperature astrophysical sites.