分类： 物理学 >> 核物理学 提交时间： 2025-07-09
Jiao, Dr. Pu
Hao, Dr. Zirui
Li, Dr. Zhicai
Sun, Dr. Qiankun
Liu, Dr. Longxiang
Xu, Dr. Hanghua
Zhang, Dr. Yue
Zhou, Miss Mengdie
Yang, Dr. Yuxuan
Jin, Dr. Sheng
Chen, Dr. Kaijie
Ye, Mr. Shan
Wang, Dr. Zhenwei
Wang, Dr. Yuting
Wei, Mrs. Hui-Ling
Fu, Dr. Yao
Wang, Prof. Hongwei
Fan, Prof. GongTao
Ma, Dr. Chun-Wang (Nuclear physics) 马春旺
摘要： To overcome the difficulty and expensive cost for some specific isotopic targets, a substitution method was proposed to measure the cross section of (γ, n) reactions. Considering that the natural copper element (natCu) only has 63Cu and 65Cu isotopes, the 65Cu(γ, n)64Cu reaction was taken as an example to test the substitution method. Using quasi-monoenergetic γ beams provided by the Shanghai Laser Electron Gamma Source (SLEGS) of the Shanghai Synchrotron Radiation Facility (SSRF), the natCu(γ, n) was measured from Eγ= 11.09 to 17.87 MeV. Furthermore, based on the 63Cu(γ, n) reaction measured using the same experimental setup at SLEGS, the 65Cu(γ, n)64Cu was extracted using the substitution method. The abundance variation of natural copper, showing a significant influence in the cross section, is also investigated. The results were compared to the existing experimental data measured by bremsstrahlung and positron annihilation in-flight sources, and the TALYS 2.0 predictions. The γ strength function (γSF) of 65Cu is obtained from the 65Cu(γ, n) data, and the reaction cross section of 64Cu(n, γ) was further calculated.
分类： 物理学 >> 核物理学 提交时间： 2025-04-15
Jiao, Dr. Pu
Hao, Dr. Zirui
Li, Dr. Zhicai
Sun, Dr. Qiankun
Liu, Dr. Longxiang
Xu, Dr. Hanghua
Zhang, Dr. Yue
Zhou, Miss Mengdie
Yang, Dr. Yuxuan
Jin, Dr. Sheng
Chen, Dr. Kaijie
Ye, Mr. Shan
Wang, Dr. Zhenwei
Wang, Dr. Yuting
Wei, Mrs. Hui-Ling
Fu, Dr. Yao
Wang, Prof. Hongwei
Fan, Prof. GongTao
Ma, Dr. Chun-Wang (Nuclear physics) 马春旺
摘要： To overcome the difffculty and expensive cost for some speciffc isotopic targets, a substitution method was proposed to measure the cross section of (γ, n) reactions. Considering that the natural copper element (natCu) only has 63Cu and 65Cu isotopes, the 65Cu(γ,n)64Cu reaction was taken as an example to test the substitution method. Using quasi-monoenergetic γ beams provided by the Shanghai Laser Electron Gamma Source (SLEGS) of the Shanghai Synchrotron Radiation Facility (SSRF), the natCu(γ, n) was measured from Eγ = 11.09 to 17.87 MeV. Furthermore, based on the previously measured 63Cu(γ, n) reaction using the same experimental setup at SLEGS, the 65Cu(γ, n)64Cu was extracted using the substitution method, which was compared to the existing experimental data measured by bremsstrahlung and positron annihilation in-ffight light sources, and the Talys2.0 toolkit predictions. The γ strength function (γSF) of 65Cu is obtained from the 65Cu(γ, n) data, and the reaction cross section of 64Cu(n, γ) was further calculated.
分类： 物理学 >> 核物理学 提交时间： 2025-03-02
Hao, Dr. Zirui
Liu, Dr. Longxiang
Zhang, Dr. Yue
Wang, Prof. Hongwei
Fan, Prof. Gongtao
Xu, Dr. Hanghua
Jin, Dr. Sheng
Yang, Dr. Yuxuan
Li, Dr. Zhicai
Jiao, Mr. Pu
Chen, Dr. Kaijie
Sun, Dr. Qiankun
Wang, Dr. Zhenwei
Zhou, Miss Mengdie
Ye, Mr. Shan
Xu, Dr. Mengke
Wang, Dr. Xiangfei
Shen, Dr. Yulong
摘要： Photoneutron data are increasingly used in basic research of nuclear physics and in applications of nuclear technology. China has long encountered a bottleneck in the independent measurement of photoneutron cross sections due to the lack of dedicated gamma sources. The Shanghai Laser Electron Gamma Source (SLEGS), based on laser Compton scattering (LCS), provides energy-tunable and quasi-monoenergetic gamma beams, opening up a new avenue for high-precision photonuclear research. This paper focuses on the Flat-Efficiency Detector (FED) array of SLEGS and its application in photoneutron cross section measurements. The systematic uncertainty of FED was verified to be 3.02% through the calibration of a 252Cf neutron source. Additionally, it employs 197Au and 159Tb as case studies to demonstrate the format and processing methods of raw photoneutron data. The results confirm the application potential of SLEGS in the measurement of photoneutron cross sections, with SLEGS capable of supporting the independent acquisition of photoneutron data in China.
分类： 物理学 >> 核物理学 提交时间： 2025-01-08
Hao, Dr. Zirui
Liu, Dr. Longxiang
Zhang, Dr. Yue
Wang, Prof. Hongwei
Fan, Prof. Gongtao
Xu, Dr. Hanghua
Jin, Dr. Sheng
Yang, Dr. Yuxuan
Li, Dr. Zhicai
Jiao, Mr. Pu
Chen, Dr. Kaijie
Sun, Dr. Qiankun
Wang, Dr. Zhenwei
Zhou, Miss Mengdie
Ye, Mr. Shan
Xu, Dr. Mengke
Wang, Dr. Xiangfei
Shen, Dr. Yulong
摘要： Photonuclear data are increasingly used in basic research of nuclear physics and application of nuclear technology. The generation of photonuclear data depends on advanced gamma source devices. SLEGS is a new Laser Compton Scattering (LCS) gamma source in Shanghai Synchrotron Radiation Facility (SSRF). It is a crucial beamline for photonuclear reaction cross section measurement and related dataset generation in China. Photonuclear data, including photoneutron, photo-proton, photo-alpha and photo-fission data, as well as the inelastically scattered photon (usually known as nuclear resonance fluorescence (NRF)) data, are useful in nuclear physics, nuclear astrophysics, polarization physics, and other related fields. SLEGS, with its monochromatic characteristics and Laser Compton Slant Scattering (LCSS) mode, offers unique features and methodologies for the measurement and analysis of photonuclear data. This article thoroughly explains the systematic uncertainties of the Flat-Efficiency Detector (FED) system. Additionally, it employs $^{197}$Au and $^{159}$Tb as case studies to demonstrate the format and processing methods of raw photoneutron data. The content is aimed at the reuse of data analysis.
分类： 物理学 >> 核物理学 提交时间： 2024-12-17
Jiao, Dr. Pu
Hao, Dr. Zi Rui
Sun, Dr. Qiankun
Liu, Dr. Longxiang Xiang
Xu, Dr. Hanghua
Zhang, Dr. Yue
Zhou, Miss Mengdie
Li, Dr. Zhicai
Yang, Dr. Yuxuan
Jin, Dr. Sheng
Chen, Dr. Kaijie
Ye, Mr. Shan
Wang, Dr. Zhenwei
Wang, Dr. Yuting
Wei, Mrs. Hui-Ling
Fu, Dr. Yao
Wang, Prof. Hongwei
Fan, Prof. GongTao
Ma, Dr. Chun-Wang (Nuclear physics) 马春旺
摘要： Accurate Photoneutron cross section measurement of 27Al nuclei has an important impact on clarifying the differences in existing experimental data and improving the accuracy of the nuclear reaction rate calculation of 26Al in nuclear astrophysics. The photoneutron cross sections for the 27Al(γ, n) reaction, within the neutron separation energy 13.2 MeV to 21.7 MeV, has been meticulously measured employing a new Flat Efficiency Detector (FED) array at the Shanghai Laser Electron Gamma Source (SLEGS).
分类： 物理学 >> 核物理学 提交时间： 2024-12-06
Jiao, Dr. Pu
Hao, Dr. Zi Rui
Sun, Dr. Qiankun
Liu, Dr. Longxiang Xiang
Xu, Dr. Hanghua
Zhang, Dr. Yue
Zhou, Miss Mengdie
Li, Dr. Zhicai
Yang, Dr. Yuxuan
Jin, Dr. Sheng
Chen, Dr. Kaijie
Ye, Mr. Shan
Wang, Dr. Zhenwei
Wang, Dr. Yuting
Wei, Mrs. Hui-Ling
Fu, Dr. Yao
Wang, Prof. Hongwei
Fan, Prof. GongTao
Ma, Dr. Chun-Wang (Nuclear physics) 马春旺
摘要： Accurate Photoneutron cross section measurement of 27Al nuclei has an important impact on clarifying the differences in existing experimental data and improving the accuracy of the nuclear reaction rate calculation of 26Al in nuclear astrophysics. The photoneutron cross sections for the 27Al(γ, n) reaction, within the neutron separation energy 13.2 MeV to 21.7 MeV, has been meticulously measured employing a new Flat Efficiency Detector (FED) array at the Shanghai Laser Electron Gamma Source (SLEGS).
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