Bandwidth superposition of linearly chirped microwave waveforms based on ...
Updated Progresses in Perovskite Solar Cells
Realization of 366 nm GaN/AlGaN single quantum well ultraviolet laser dio...
1.3 mu m InGaAlAs/InP laser integrated with laterally tapered SSC in a re...
Mid-wave/long-wave dual-color infrared quantum cascade detector enhanced ...
Integrated polarization-sensitive amplification system for digital inform...
Enhanced in-plane ferroelectricity, antiferroelectricity, and unconventio...
Polarimetric Image Sensor and Fermi Level Shifting Induced Multichannel T...
Four-channel directly modulated square-rectangular laser array in the O-band
High-performance optical noncontact controlling system based on broadband...
官方微信
友情鏈接

Response to 14 MeV neutrons for single-crystal diamond detectors

2021-11-25

 

Author(s): Huang, GW (Huang Guang-Wei); Wu, K (Wu Kun); Chen, Y (Chen Ye); Li, LX (Li Lin-Xiang); Zhang, SY (Zhang Si-Yuan); Wang, ZG (Wang Zun-Gang); Zhu, HY (Zhu Hong-Ying); Zhou, CZ (Zhou Chun-Zhi); Zhang, YY (Zhang Yi-Yun); Liu, ZQ (Liu Zhi-Qiang); Yi, XY (Yi Xiao-Yan); Li, JM (Li Jin-Min)

Source: ACTA PHYSICA SINICA Volume: 70 Issue: 20 Article Number: 202901 DOI: 10.7498/aps.70.20210891 Published: OCT 20 2021

Abstract: Single-crystal diamond (SCD) detectors promise to have applications in neutron spectrometers and fusion neutron monitoring under high flux deuterium plasma. The response to 14 MeV neutrons for the SCD detector is studied in this paper. A high-performance SCD neutron detector is developed by processing cleaning wafer, depositing metal electrodes, annealing and wire-bonding. A fast-neutrons monitoring system containing the detector, preamplifier and digital multichannel analyzer is constructed, and the response to 14 MeV neutrons for the detector is measured on the K-400 neutron generator supported by China Academy of Engineering Physics. In addition, computational simulations of the energy deposition and detection efficiency of 14 MeV neutron through diamond are performed via Geant4 toolkit based on evaluated nuclear data libraries of ENDF-VIII.0, JEFF-3.3, BROND-3.1, JENDL-4.0u and CENDL-3.1. The methods of widening the simulation spectrum and calibration of measuring spectrum are presented in order that simulation results are in reasonable agreement with measured values. The results indicate that the energy deposition of 14 MeV neutrons incident on the C-12 can be more accurately calculated with CENDL-3.1 than with other data libraries. The elastic scattering and reaction of C-12(n, 3 alpha) are described more accurately with the CENDL-3.1, and the characteristic peaks of C-12(n, alpha)Be-9 matched well the calibrated testing spectrum and the after-widening simulation spectrum, with a difference between the simulated detection efficiency and measuring results being as low as 0.61%. The outcome measures are described as the standardized mean difference, with a detection efficiency of (3.31 x 10(-4) +/- 0.11 x 10(-4)) counts/n, an energy resolution of 4.02% +/- 0.09%, and a peaking channel of 1797.24 +/- 0.80, which suggest that the detector keeps stable well under a high neutron flux of 2 x 10(10) n/s for as long as 2 h. The results demonstrate that the SCD detector can be a promising candidate for monitoring 14 MeV D-T neutrons.

Accession Number: WOS:000710189000006

ISSN: 1000-3290

Full Text: http://wulixb.iphy.ac.cn/article/doi/10.7498/aps.70.20210891



關于我們
下載視頻觀看
聯系方式
通信地址

北京市海淀区清华东路甲35号(林大北路中段) 北京912信箱 (100083)

電話

010-82304210/010-82305052(傳真)

E-mail

semi@semi.ac.cn

交通地圖
友情鏈接
中華人民共和國科技技術部
中國科學院
中國工程院
國家自然科學基金委員會
中國科學院大学
中國科學技術大學
中國科學院科技产业网
版权所有 九五至尊娱乐棋牌

備案號:,京ICP備05085259-1號 京公網安備110402500052 中國科學院半导体所声明