Study on energy-loss compensation correction method for fission fragments

Liu, C.Q.; Hu, Z.; Xie, Qian; Ma, Zhixin; Huang, Chao; Han, Chaoyu; Bai, Xiaohou; Huo, Dong-Ying; Wu, Kun; Liu, X.Y.; Zhang, S.J.; Li, W.M.; Lü, Xiaolong; Wang, J.R.; Zhang, Y.; Peng, Ruimin; Yao, Zeen; Zheng, Wei

doi:10.1088/1748-0221/16/07/p07038

Cited by 2 publications

(3 citation statements)

References 23 publications

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“…The energy-loss correction for FFs is important [10,23]. Figure 9 shows the average anode pulse height plotted as a function of 1/cos 𝜃.…”

Section: Energy-loss Correctionmentioning

confidence: 99%

“…The calculated results were matched well with the experimental data. Moreover, the stopping power of FFs in a fission target have been investigated using Geant4 [10], and an energy-loss correction method was proposed, which contributes to data processing and correction in measurements. Additionally, we developed an evaluation model to investigate the grid inefficiency of mesh-type FGIC by combining Geant4, COMSOL, and Garfield++ codes.…”

Section: Introductionmentioning

confidence: 99%

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

Liu¹,

Tao²,

Peng

et al. 2023

J. Inst.

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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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“…The energy-loss correction for FFs is important [10,23]. Figure 9 shows the average anode pulse height plotted as a function of 1/cos 𝜃.…”

Section: Energy-loss Correctionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Liu¹,

Tao²,

Peng

et al. 2023

J. Inst.

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“…利用Monte-Carlo输运工具Geant4 [23] 计算发射中子后裂变碎片信息, 并结合所建立的双动能计算模型 [24−26] 推导得到发射中子前裂变碎片质量、动能分布, 避免了大量经验公式拟合及参数调节. 另外, Geant4官核数据库制作而成) [27] . 发射中子后裂变碎片分布特性由Geant4内置物理模型-G4ParaFission-Model模型控制 [28−32] .…”

Section: 向中子核数据需求的可靠计算方法与工具极为重要unclassified

Monte-Carlo study of pre-neutron emission mass and energy for neutron-induced 232Th fission

Liu¹,

Dong-Ying²,

Chen³

et al. 2022

Acta Phys. Sin.

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The development of fourth-generation reactors and advanced nuclear energy systems require high-precision, multi-nuclide, and wide-energy-area neutron nuclear data. However, the current nuclear energy-related nuclear fission data in the China Nuclear Data Evaluation Library (CENDL library) are incomplete and cannot meet the current need. It is extremely important to establish the reliable calculation methods and tools for the neutron nuclear data. Based on the Monte-Carlo method, a model for calculating the pre-neutron fission fragment is established in this work. The mass and kinetic energy distribution of 232Th(n,f) reaction at the medium- and low- incident neutron energy are studied. The calculations of the mass distribution with the different values of incident energy are compared with the experimental results. The maximum deviation of this work from the experimental data is ~1%, which is advantageous compared with the GEF and TALYS code (maximum deviation from the experimental value is ~2%). The calculation of the pre-neutron fission fragment kinetic energy also shows good agreement with experimental result. The results indicate that this model can well describe and predict the characteristics of pre-neutron fission fragment for 232Th(n,f) reaction at the medium- and low- incident neutron energy. It also provides a new idea for calculating the neutron-induced actinide fission reactions.

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Study on energy-loss compensation correction method for fission fragments

Cited by 2 publications

References 23 publications

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

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

Monte-Carlo study of pre-neutron emission mass and energy for neutron-induced <sup>232</sup>Th fission

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