Abstract

The passage of fast neutrons through the crystal structure of a textured diamond obtained by chemical vapor deposition (CVD diamond) is studied. Neutrons with an energy of 2.45 MeV from the DD reaction and with an average energy of about 2 MeV from the ²⁵²Cf isotope are used as neutron sources. The neutrons are detected by two independent methods: using proportional counters filled with ³Не and a paraterphenyl-based scintillation detector. The measurements show that the neutron-flux incident on the detector depends on the orientation of the target. In the case of isotropic samples containing diamond and carbon, such effects are not observed. A possible explanation for the effect is the channeling of deuterium ions and neutrons in channels of textured CVD diamond.

中文翻译：

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快速中子穿过带纹理的CVD金刚石的晶体结构

摘要

研究了快速中子通过化学气相沉积（CVD金刚石）获得的织纹金刚石晶体结构的通道。DD反应的能量为2.45 MeV，²⁵² Cf同位素的平均能量为约2 MeV的中子用作中子源。使用填充有正比计数器：将中子被两种独立的方法检测到的³ Не和基于paraterphenyl的闪烁检测器。测量表明，入射在探测器上的中子通量取决于目标的方向。在含有金刚石和碳的各向同性样品的情况下，未观察到这种影响。这种影响的可能解释是氘离子和中子在带纹理的CVD金刚石通道中的通道。