¹¹Li的β衰变中多中子发射研究
核实验
2020-11-25 v1
摘要
我们首次通过符合探测两个中子并测量其角度与能量，研究了¹¹Li的β衰变后双中子发射的运动学。采用液体闪烁体中子探测器阵列，通过脉冲形状甄别排除宇宙射线与γ射线本底。利用在β-1n发射体⁹Li上测试的滤波器，排除了单个中子击中两个探测器的串扰事件。在大部分感兴趣能量范围内获得了较大的串扰排除率（>95%）。应用于¹¹Li数据得到了大量可解释为β-2n衰变的事件。在≈2 MeV处的离散中子谱线表明 sequential 双中子发射，可能来自¹¹Be中10.6 MeV激发能处的非束缚态。
引用
@article{arxiv.1906.04699,
title = {Study of multi-neutron emission in the $\beta$-decay of $^{11}$Li},
author = {F. Delaunay and N. L. Achouri and A. Algora and M. Assié and J. Balibrea and K. Banerjee and C. Bhattacharya and M. J. G. Borge and D. Cano-Ott and B. Fernández-Domínguez and L. M. Fraile and J. Gibelin and M. V. Lund and M. Madurga and F. M. Marqués and I. Marroquin and T. Martínez and E. Mendoza and N. A. Orr and M. Pârlog and X. Pereira-López and V. Pestel and K. Riisager and C. Santos and M. Sénoville and O. Tengblad and V. Vedia},
journal= {arXiv preprint arXiv:1906.04699},
year = {2020}
}
备注
4 pages, Proceedings of the EuNPC2018 Conference