一种超快速、抗辐射的快中子探测器。

An ultra fast, radiation-resistant fast neutron detector.

作者信息

Nakhostin M, Baba M, Oishi T, Itoga T, Hagiwara M

机构信息

Cyclotron and Radioisotope Center (CYRIC), Tohoku University, Sendai, Japan.

出版信息

Radiat Prot Dosimetry. 2007;126(1-4):190-3. doi: 10.1093/rpd/ncm040. Epub 2007 Jun 16.

DOI:10.1093/rpd/ncm040

PMID:17575298

Abstract

This paper describes a study on 14-MeV neutron detection based on the combination of a parallel plate avalanche chamber with a sheet of polypropylene as fast neutron-to-charged-particle converter. By employing a carefully shielded chamber, neutron-induced charged particles background from the chamber body was successfully reduced to <6 x 10(-5) count per incident neutron. Fast signals, with approximately 7 ns pulse width were observed. The obtained detection efficiency is 0.15%.

摘要

本文描述了一项基于平行板雪崩室与一片聚丙烯相结合作为快中子到带电粒子转换器的14兆电子伏中子探测研究。通过使用精心屏蔽的室，成功地将来自室体的中子诱发带电粒子本底降低到每入射中子<6×10⁻⁵计数。观察到了脉冲宽度约为7纳秒的快信号。获得的探测效率为0.15%。