作者机构:
[Li, Xiao-Hua; Pan, Xiao; Liu, Hong-Ming; Xiang, Dong; Zou, You-Tian] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[He, Biao] Cent South Univ, Coll Phys & Elect, Changsha 410083, Peoples R China.;[Li, Xiao-Hua; Xiang, Dong] Univ South China, Natl Exemplary Base Int Sci & Tech Collaborat Nuc, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua; Xiang, Dong] Univ South China, Cooperat Innovat Ctr Nucl Fuel Cycle Technol & Eq, Hengyang 421001, Peoples R China.;[Li, Xiao-Hua] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct & Quantum Contr, Changsha 410081, Peoples R China.
通讯机构:
[Xiao-Hua Li; Dong Xiang] S;School of Nuclear Science and Technology, University of South China, Hengyang 421001, China<&wdkj&>National Exemplary Base for International Sci & Tech. Collaboration of Nuclear Energy and Nuclear Safety, University of South China, Hengyang 421001, China<&wdkj&>Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China<&wdkj&>School of Nuclear Science and Technology, University of South China, Hengyang 421001, China<&wdkj&>National Exemplary Base for International Sci & Tech. Collaboration of Nuclear Energy and Nuclear Safety, University of South China, Hengyang 421001, China<&wdkj&>Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China<&wdkj&>Key Laboratory of Low Dimensional Quantum Structures and Quantum Control, Hunan Normal University, Changsha 410081, China
关键词:
the released energy of proton radioactivity;liquid-drop model;shell correction
摘要:
In this work, based on the liquid-drop model and considering the shell correction, we propose a simple formula to calculate the released energy of proton radioactivity (Qp). The parameters of this formula are obtained by fitting the experimental data of 29 nuclei with proton radioactivity from ground state. The standard deviation between the theoretical values and experimental ones is only 0.157 MeV. In addition, we extend this formula to calculate 51 proton radioactivity candidates in region 51 ≤ Z ≤ 83 taken from the latest evaluated atomic mass table AME2016 and compared with the Qp calculated by WS4 and HFB-29. The calculated results indicate that the evaluation ability of this formula for Qp is inferior to WS4 while better than HFB-29.
作者机构:
[杨超; 于涛] School of Nuclear Science and Technology, University of South China, Hengyang;421001, China;[邓力; 程汤培] CAEP Software Center for High Performance Numerical Simulation, Beijing;100094, China;[杨超; 于涛] 421001, China
作者机构:
[徐士坤; 于涛; 谢金森; 姚磊] School of Nuclear Science and Technology, University of South China, Hengyang;421001, China;Hunan Engineering & Technology Research Center for Virtual Nuclear Reactor, University of South China, Hengyang;[李满仓; 夏羿] Nuclear Power Institute of China, Chengdu;610213, China
作者机构:
[雷济充; 谢金森; 于涛; 陈珍平; 赵鹏程; 谢超; 倪梓宁] School of Nuclear Science and Technology, University of South China, Hengyang;421001, China;Virtual Simulation Experiment Teaching Center on Nuclear Energy and Technology, University of South China, Hengyang;[周剑东] Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Shanghai;200000, China
作者机构:
[Lan, Hao-Yang; Zhang, Jia-Lin; Song, Tan; Zhou, Jian-Liang; Luo, Wen] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Luo, Wen] Univ South China, Natl Exemplary Base Int Sci & Tech, Collaborat Nucl Energy & Nucl Safety, Hengyang 421001, Peoples R China.
通讯机构:
[Wen Luo] S;School of Nuclear Science and Technology, University of South China, Hengyang, China<&wdkj&>National Exemplary Base for International Sci. & Tech., Collaboration of Nuclear Energy and Nuclear Safety, University of South China, Hengyang, China
关键词:
Special nuclear material;Nondestructive interrogation;Nuclear resonance fluorescence
摘要:
The smuggling of special nuclear materials (SNMs) across national borders is becoming a serious threat to nuclear nonproliferation. This paper presents a feasibility study on the rapid interrogation of concealed SNMs by combining scattering and transmission nuclear resonance fluorescence (sNRF and tNRF) spectroscopy. In sNRF spectroscopy, SNMs such as
$$^{235, 238}$$
U are excited by a wide-band photon beam of appropriate energy and exhibit unique NRF signatures. Monte Carlo simulations show that one-dimensional scans can realize isotopic identification of concealed
$$^{235, 238}$$
U when the detector array used for interrogation has sufficiently high energy resolution. The simulated isotopic ratio
$$^{235}$$
U/
$$^{238}$$
U is in good agreement with the theoretical value when the SNMs are enclosed in relatively thin iron. This interrogation is followed by tNRF spectroscopy using a narrow-band photon beam with the goal of obtaining tomographic images of the concealed SNMs. The reconstructed image clearly reveals the position of the isotope
$$^{235}$$
U inside an iron rod. It is shown that the interrogation time of sNRF and tNRF spectroscopy is one order of magnitude lower than that when only tNRF spectroscopy is used and results in a missed-detection rate of 10
$$^{-3}$$
. The proposed method can also be applied for isotopic imaging of other SNMs such as
$$^{239, 240}$$
Pu and
$$^{237}$$
Np.
作者机构:
[刘劲; 吴雨田; 邓爽; 肖静水; 彭安国] School of Nuclear Science and Technology, University of South China, Hengyang, 421001, China;[刘广山; 李超] College of the Environment and Ecology, Xiamen University, Xiamen, 361005, China
通讯机构:
[Peng, A.] S;School of Nuclear Science and Technology, China
作者机构:
[姚鑫森] Radiotherapy Center, Chenzhou First People's Hospital, Chenzhou 423000, China;[巩贯忠; 尹勇] Department of Radiation Physics, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China;[任建新] School of Physics and Technology, Wuhan University, Wuhan 430072, China;[左国平] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
通讯机构:
[Yong, Y.] D;Department of Radiation Physics, China
作者:
Wan Shun-kuan;Lu Bo;Zhang Hong-ming*;He Liang;Fu Jia;...
期刊:
光谱学与光谱分析,2021年41(10):3111-3116 ISSN:1000-0593
通讯作者:
Zhang Hong-ming
作者机构:
[Lu Bo; Fu Jia; Wan Shun-kuan; Wang Fu-di; Zhang Hong-ming; Li Yi-chao; Bin Bin; He Liang] Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China.;[Wan Shun-kuan; Li Yi-chao] Univ Sci & Technol China, Hefei 230026, Peoples R China.;[Ji Hua-jian] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
作者机构:
[Fu Jia; Lyu Bo; Bin Bin; Li Yichao; Wan Shunkuan; Zhang Hongming; Li Yingying; Wang Fudi; He Liang] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China.;[Wang Xunyu; Yang Jin; Cao Jinjia; Gong Xueyu; He Liang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Yu Qingjiang; Chen Jun] Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China.
摘要:
Spectral measurement of tungsten (W) impurity is essential to study impurity transport. Therefore, an X-ray crystal spectrometer (XCS) on EAST was used to measure the line spectra from highly ionized W ions. On EAST, both poloidal XCS and tangential XCS have been developed to measure the plasma temperature as well as the rotation velocity. Recently, He-like and H-like argon spectra have also been obtained using a two-crystal setup. W lines are identified in this study. Through a careful analysis, the W lines of 3.9336, 3.9321, and 3.664 angstrom are found to be diffracted by He-like or H-like crystals. The lines are confirmed with the NIST database. We also calculated the ion temperature with Doppler broadening of these lines. The ion temperature from the W lines is entirely consistent with that from Ar line spectra. The measurement of these W line spectra could be used to study W impurity transport in future work.