Accumulative dose response of CdZnTe detectors to 14.1 MeV neutrons
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- 作者：Xiang Chen ; chenxiang@nint.ac.cn ; He-tong Han ; Gang Li ; Yi Lu
- 关键词：Radiation measurement ; Neutron ; CZT detector ; Accumulative dose
- 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
- 出版年：2017
- 出版时间：1 March 2017
- 年：2017
- 卷：394
- 期：Complete
- 页码：97-102
- 全文大小：1299 K
- 卷排序：394
文摘
The accumulative dose response of CdZnTe (CZT) detectors to 14.1 MeV neutrons is discussed experimentally in this paper. The Cockcroft–Walton Accelerator is used to obtain a steady neutron beam of 14.1 MeV neutrons. A pulsed X-ray source is used to test the response parameters of the neutron-exposed CZT detectors under the pulse mode. The irradiation time (hours) is shorter relative to the time scales (years) where annealing effects occur. Time and linearity response is analyzed to evaluate the maximum dose rate of the CZT detectors and the pulse shape. The result shows that the experimental CZT detectors maintain stable response behaviors, while the maximum dose rate and the total accumulative dose are less than 106 neutrons/(cm2·s) and 1010 neutrons/cm2, respectively.