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Passage of Fast Neutrons Through the Crystal Structure of Textured CVD Diamond
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques ( IF 0.5 ) Pub Date : 2020-05-07 , DOI: 10.1134/s1027451020020251
O. D. Dalkarov , N. A. Glushkov , M. A. Negodaev , A. S. Rusetsky , A. V. Oginov , M. A. Kirsanov , A. F. Popovich

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:

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。
更新日期:2020-05-07
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