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： 2024-02-16
Yang Yuxuan
Wang Hongwei
Zhao Weijuan
Zhang Yue
Li Zhicai
Hao Zirui
Chen Kaijie
Wang Zhenwei
Sun Qiankun
Fan Gongtao
Xu Hanghua
Liu Longxiang
摘要： The Shanghai Laser Electron Gamma Source(SLEGS) has delivered a quasi-monochromatic, continuously energy-tunable gamma-ray beam. Based on the photon activation analysis(PAA) method, SLEGS has built and developed a photon activation analysis platform, including online activation and offline low-background HPGe detector measurement systems, as an alternative to direct measurement methods and a cross-tests at low throughput. Due to the short half-lives spanning from minutes to days and characteristics such as ease of fabrication, cost-effectiveness, and stability, gold (197Au) and zinc (64Zn) emerge as favorable activation targets in the gamma-ray beam flux monitor. Notably, their utility shows a multitude of advantages in monitoring the gamma-ray beam flux typically 105 photons/s with the energy of 13.16 to 19.08 MeV under the condition of the 3 mm coarse collimator. Especially in high-flux $\gamma$-ray beam experiments can be well applied.
分类： 核科学技术 >> 粒子加速器 提交时间： 2023-06-18 合作期刊: 《Nuclear Science and Techniques》
摘要： High brightness -rays produced by laser Compton scattering (LCS) are ideal probes for the study of nucleon and nuclear structure. We propose such a -ray source using the backscattering of a laser from the bright electron beam produced by the linac of the Shanghai Soft X-ray Free-electron Laser (SXFEL) test facility at the Shanghai Institute of Applied Physics (SINAP). The performance is optimized through theoretical analysis and benchmarked with 4D Monte-Carlo simulations. The peak brightness of the source is expected to be larger than 21022 photons/(mm2 mrad2 s 0.1%BW) and photon energy ranges from 3.7 MeV to 38.9 MeV. Its performance, compared to Extreme Light Infrastructure-Nuclear Physics (ELI-NP), and the Shanghai Laser-Electron Gamma-ray Source (SLEGS), is given. The potential for basic and applied research is also briefly outlined.
分类： 物理学 >> 核物理学 提交时间： 2022-06-13
摘要： Shanghai Laser Electron Gamma Source (SLEGS) is a powerful gamma source to provide MeV gamma-ray beams for nuclear science and technology. It is developed as one of the sixteenbeamline stations in Phase II Project of the Shanghai Synchrotron Radiation Facility (SSRF). Theslant-scattering mode is for the first time systematically employed in the laser Compton scattering (LCS) at SLEGS to produce energy-tunable quasi-monoenergetic gamma-ray beams. SLEGS officially completed its commissioning from July to December 2021. Gamma-rays in energy range of 0.25 - 21.7 MeV with the flux of 2.1 104 - 1.2 107 photons/s and the energy spread of 2 15 % are produced during the test. This paper reports results of the commissioning of the SLEGS beamline.
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