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Electrical and γ-ray energy spectrum response properties of PbI_2 crystal grown by physical vapor transport 被引量:2
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作者 孙辉 朱兴华 +3 位作者 杨定宇 何知宇 朱世富 赵北君 《Journal of Semiconductors》 EI CAS CSCD 2012年第5期17-20,共4页
Lead iodide single crystal was grown by physical vapor transport method.Two radiation detectors with different configurations were fabricated from the as-grown crystal.The electrical and y-ray response properties at r... Lead iodide single crystal was grown by physical vapor transport method.Two radiation detectors with different configurations were fabricated from the as-grown crystal.The electrical and y-ray response properties at room temperature of the both detectors were investigated.It is found that the dark resistivity of the detectors are respectively 3×10^(10)Ω·cm for bias electric field parallel to crystal c-axis(E//c) and 2×10~8Ω·cm for perpendicular to crystal c-axis(E⊥c).The energy spectrum response measurement shows that both detectors were sensitive to ^(241) Am 59.5 keVγ-rays,and achieved a good energy resolution of 16.8%for the E⊥c-axis configuration detector with a full width at half maximum of 9.996 keV. 展开更多
关键词 PbI_2 crystal physical vapor transport radiation detector γ-rays energy spectrum
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Response functions of a 4π summing gamma detector in β-Oslo method 被引量:2
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作者 Guo-Chun Yang Lei-Ming Hua +5 位作者 Fei Lu Jun Su Zhi-Hong Li Shi-Lun Jin Yang-Ping Shen Bing Guo 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第6期9-17,共9页
The response functions of a 4π summing BGO detector were established using extensive experimental measurements and GEANT4 simulation. The partial and total efficiencies for all components of the γ-ray interaction wi... The response functions of a 4π summing BGO detector were established using extensive experimental measurements and GEANT4 simulation. The partial and total efficiencies for all components of the γ-ray interaction with the BGO detector were also measured. These response functions and efficiencies will be used in the β-Oslo method experiments to study the neutron capture cross sections of radioactive heavy ions. The application of the response functions of the BGO detector under simulated continuum γ-rays and source measurement γ-rays proves that the method and response functions are reliable. 展开更多
关键词 4πSumming BGO detector γ-ray spectrum energy resolutions GEANT4 simulation
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Monte Carlo simulation of prompt γ-ray spectra from depleted uranium under D-T neutron irradiation and electron recoil spectra in a liquid scintillator detector 被引量:1
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作者 秦建国 赖财锋 +3 位作者 刘荣 朱通华 张信威 叶邦角 《Chinese Physics C》 SCIE CAS CSCD 2016年第3期115-119,共5页
To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium sp... To overcome the problem of inefficient computing time and unreliable results in MCNP5 calculation, a two-step method is adopted to calculate the energy deposition of prompt γ-rays in detectors for depleted uranium spherical shells under D-T neutron irradiation. In the first step, the γ-ray spectrum for energy below 7 MeV is calculated by MCNP5 code; secondly, the electron recoil spectrum in a BC501 A liquid scintillator detector is simulated based on EGSnrc Monte Carlo Code with the γ-ray spectrum from the first step as input. The comparison of calculated results with experimental ones shows that the simulations agree well with experiment in the energy region 0.4–3 MeV for the prompt γ-ray spectrum and below 4 MeVee for the electron recoil spectrum. The reliability of the two-step method in this work is validated. 展开更多
关键词 Monte Carlo simulation depleted uranium prompt γ-ray energy spectrum recoil electron spectrum
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