A method to simulate Twin Frisch-grid ionization chamber response to fission fragments

被引：0
|
作者：
Liu, Changqi [1 ]
Tao, Kai [1 ]
Peng, Ruiying [3 ]
Hu, Zhiming [2 ]
Huang, Liming [1 ]
Dejun, E. [1 ]
Guo, Zhiqi [2 ]
Bai, Xiaohou [2 ]
Ma, Zhanwen [2 ]
机构：
[1] Inst Adv Sci Facil, Zhenyuan Rd 268, Shenzhen 518000, Peoples R China
[2] Lanzhou Univ, Sch Nucl Sci & Technol, Tianshui South Rd 222, Lanzhou 730000, Peoples R China
[3] South China Nucl & Radiat Safety Reg Off, Shenzhen 518034, Peoples R China
来源：
JOURNAL OF INSTRUMENTATION | 2023年 / 18卷 / 06期
关键词：
Detector modelling and simulations II (electric fields; charge transport; multiplication and induction; pulse formation; electron emission; etc); Charge induction; Ionization and excitation processes; Wire chambers (MWPC; Thin-gap chambers; drift chambers; drift tubes; proportional chambers etc); NEUTRON; ENERGIES;
D O I：
10.1088/1748-0221/18/06/P06019
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this study, the response of a Twin Frisch-grid ionization chamber (TFGIC) to fission fragments (FFs) was investigated using finite element and Monte Carlo methods. The entire process of the fission experiments, including FFs generation, gas ionization, electron drift and collection, and induced charge signal were well reproduced. Through data analysis, pulse height spectra from the anode and grid were transformed into energy and emission-angle information for the FFs. By means of double energy method, the pre-neutron emission fission fragment mass and total kinetic energy (TKE) can be finally determined. Experimental and calculated data of the mass and TKE distribution are shown in good agreement.
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页数：14
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