Large solid angle spectrometer for the measurements of differential (n, charged-particle) cross sections
Large solid angle spectrometer for the measurements of differential (n, charged-particle) cross sections
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DOI：
10.1016/0168-9002(94)91117-7
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发表时间：
1994
影响因子：
1.4
通讯作者：
N. Ito;M. Baba;S. Matsuyama;I. Matsuyama;N. Hirakawa
中科院分区：
文献类型：
--
作者：
N. Ito;M. Baba;S. Matsuyama;I. Matsuyama;N. Hirakawa
本文介绍了一台用于研究快中子感生带电粒子发射反应的大立体角带电粒子谱仪。在采用高Z结构元件的高压栅网电离室的基础上，该谱仪能以很高的几何效率和良好的信噪比测量次级带电粒子的能量角分布。利用本文提出的数据处理和粒子选择方法，它已成功地用于入射中子能量达14MeV的（n，xα）反应和能量达6MeV的（n，p）反应的双微分截面测量。本谱仪被证明是一种有效的手段，研究微分（n，带电粒子）截面。
A charged-particle spectrometer with a large solid angle close to 4πhas been developed for studies of fast neutron induced charged-particle emission reactions. On the basis of a high-pressure gridded ionization chamber employing high-Zstructural elements, the spectrometer permits the measurements of energy-angular distribution of secondary charged-particles with very high geometrical efficiency and a good signal-to-noise ratio. It has been applied successfully for the measurements of double-differential cross sections of (n,xα) reactions for incident neutrons up to 14 MeV, and of (n, p) reactions up to 6 MeV by use of the data reduction and particle selection methods developed in this study. The present spectrometer proved to be an efficient means for studies of differential (n, charged-particle) cross sections.