三态K_2分子飞秒含时光电子能谱的理论研究
作者：
Feng Xiao-Jing;Guo Wei* ;Lu Xing-Qiang;Yao Hong-Bin;Li Yue-Hua
期刊：
物理学报 ,2015年64(14):143303-1-143303-7 ISSN：1000-3290
通讯作者：
Guo Wei
作者机构：
[Guo Wei; Li Yue-Hua; Feng Xiao-Jing] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.;[Lu Xing-Qiang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Yao Hong-Bin] Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China.
通讯机构：
[Guo Wei] U;Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.
关键词：
三态K_2分子;含时波包法;光电子能谱;波包动力学过程
摘要：
利用三态模型和含时波包法,研究了K_2分子在强飞秒抽运-探测激光场中延时、脉宽以及抽运波长对光电子能谱和波包动力学过程的影响.研究结果表明,激光场强较弱或者脉宽较短都可能不发生Autler-Townes分裂,光电子能谱呈现出单峰结构;延时和抽运波长的改变影响能峰结构、位置和相对峰高;对于不同的抽运波长,波包的振动周期是相同的,波包振荡幅度随脉宽增大而减小;光电子能谱反映了波包动力学信息.研究结果可以为实验上实现分子的光控制以及量子调控过程提供一定的参考,并为进一步研究K_2分子的动力学性质提供有用的信息.
语种：
中文
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The Impact of Beam Deposition on Bootstrap Current of Fast Ion Produced by Neutral Beam Tangential Injection
作者：
Huang Qian-Hong;Gong Xue-Yu* ;Lu Xing-Qiang;Yu Jun;Gao Jin-Jia
期刊：
中国物理快报：英文版 ,2015年32(8):107-110 ISSN：0256-307X
通讯作者：
Gong Xue-Yu
作者机构：
[Yu Jun; Huang Qian-Hong; Gong Xue-Yu; Lu Xing-Qiang; Gao Jin-Jia] Univ South China, Dept Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Gong Xue-Yu] U;Univ South China, Dept Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
关键词：
等离子体产生;自举电流;中性束;切向;沉积;平均自由程;密度分布;引导
摘要：
The density profile of fast ions arising from a tangentially injected diffuse neutral beam in tokamak plasma is calculated. The effects of mean free paths and beam tangency radius on the density profile are discussed under typical HL-2A plasmas parameters. The results show that the profile of fast ions is strongly peaked at the center of the plasma when the mean free path at the maximum deuteron density is larger than the minor radius, while the peak value decreases when the mean free path at the maximum deuteron density is larger than twice that of the minor radius due to the beam transmission loss. Moreover, the bootstrap current of fast ions for various mean free paths at the maximum deuteron density is calculated and its density is proved to be closely related to the deposition of the neutral beam. With the electron return current considered, the net current density obviously decreases. Meanwhile, the peak central fast ion density increases when the beam tangency radius approaches the major radius, and the net bootstrap current increases rapidly with the increasing beam tangency radius. © 2015 Chinese Physical Society and IOP Publishing Ltd.
语种：
英文
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Comparison of Experiment and Simulation of the triple GEM-Based Fast Neutron Detector
作者：
Wang Xiao-Dong;Zhang Jun-Wei;Hu Bi-Tao* ;Yang He-Run;Duan Li-Min;...
期刊：
中国物理快报：英文版 ,2015年32(3): 032901-1-032901-4 ISSN：0256-307X
通讯作者：
Hu Bi-Tao
作者机构：
[Luo Wen; Wang Xiao-Dong] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Duan Li-Min; Hu Rong-Jiang; Lu Chen-Gui; Zhang Jun-Wei; Yang He-Run] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.;[Hu Bi-Tao; Zhang Chun-Hui; Yang Lei] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China.;[Zhou Jian-Rong] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;[An Lv-Xing] China Petr Logging CO LTD, LWD Logging Ctr, Xian 710000, Peoples R China.
通讯机构：
[Hu Bi-Tao] L;Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China.
关键词：
中子探测器;仿真;基础;实验;气体电子倍增器;近代物理研究所;能量沉积;高密度聚乙烯
摘要：
A detector for fast neutrons based on a 10×10 cm2 triple gas electron multiplier (GEM) device is developed and tested. A neutron converter, which is a high density polyethylene (HDPE) layer, is combined with the triple GEM detector cathode and placed inside the detector, in the path of the incident neutrons. The detector is tested by obtaining the energy deposition spectrum with an Am Be neutron source in the Institute of Modern Physics (IMP) at Lanzhou. In the present work we report the results of the tests and compare them with those of simulations. The transport of fast neutrons and their interactions with the different materials in the detector are simulated with the GEANT4 code, to understand the experimental results. The detector displays a clear response to the incident fast neutrons. However, an unexpected disagreement in the energy dependence of the response between the simulated and measured spectra is observed. The neutron sources used in our simulation include deuterium-tritium (DT, 14MeV), deuterium-deuterium (DD, 2.45MeV), and Am Be sources. The simulation results also show that among the secondary particles generated by the incident neutron, the main contributions to the total energy deposition are from recoil protons induced in hydrogen-rich HDPE or Kapton (GEM material), and activation photons induced by neutron interaction with Ar atoms. Their contributions account for 90% of the total energy deposition. In addition, the dependence of neutron deposited energy spectrum on the composition of the gas mixture is presented. © 2015 Chinese Physical Society and IOP Publishing Ltd.
语种：
英文
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Erratum: Generation of bright attosecond X-ray pulse trains via Thomson scattering from laser-plasma accelerators (Optics Express (2014) 22:26 (32098-32106))
作者：
Luo, W.;Yu, T. P.;Chen, M.;Song, Y. M.;Zhu, Z. C.* ;...
期刊：
Optics Express ,2015年23(6):7732-7733 ISSN：1094-4087
通讯作者：
Zhu, Z. C.
作者机构：
[Luo, W.; Zhu, Z. C.; Song, Y. M.] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Yu, T. P.; Zhuo, H. B.; Ma, Y. Y.] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China.;[Chen, M.] Shanghai Jiao Tong Univ, Dept Phys & Astron, Minist Educ, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China.
通讯机构：
[Zhu, Z. C.] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
Attenuation;Attosecond pulses;Brightness;Photons;Thomson scattering;X rays
摘要：
We report and correct a couple of calculation errors in the x-ray flux and maximum peak brightness in our paper [Opt. Express22, 32098 (2014)].
语种：
英文
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Dense electron-positron plasmas and gamma-ray bursts generation by counter-propagating quantum electrodynamics-strong laser interaction with solid targets
作者：
Luo, Wen* ;Zhu, Yi-Bo;Zhuo, Hong-Bin;Ma, Yan-Yun;Song, Ying-Ming;...
期刊：
PHYSICS OF PLASMAS ,2015年22(6):063112 ISSN：1070-664X
通讯作者：
Luo, Wen
作者机构：
[Zhu, Yi-Bo; Song, Ying-Ming; Zhu, Zhi-Chao; Wang, Xiao-Dong; Luo, Wen] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Turcu, I. C. E.; Luo, Wen] Horia Hulubei Natl Inst R&D Phys & Nucl Engn IFIN, Extreme Light Infrastruct Nucl Phys ELI NP, RO-077125 Bucharest, Jud Ilfov, Romania.;[Li, Xing-Huo; Ma, Yan-Yun; Zhuo, Hong-Bin] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China.;[Ma, Yan-Yun; Chen, Min; Zhuo, Hong-Bin] Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China.;[Chen, Min] Shanghai Jiao Tong Univ, Minist Educ, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China.
通讯机构：
[Luo, Wen] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
gamma-ray bursts;plasma light propagation;plasma production by laser;plasma simulation;quantum electrodynamics
摘要：
We use quantum electrodynamics (QED) particle-in-cell simulations to investigate and compare the generation of dense electron-positron plasmas and intense γ-ray bursts in the case of counter-propagating laser solid interaction (two-side irradiation) and single laser solid interaction (one-side irradiation). In the case of counter-propagating linearly polarized laser pulses irradiating a thin aluminum foil with each pulse peak power of 12.5 PW (I = 4 × 1023 W/cm2), we calculate that about 20% of the laser energy is converted into a burst of γ-rays with flux exceeding 1014 s.−1 This would be one of the most intense γ-ray sources among those currently available in laboratories. The γ-ray conversion efficiency in the case of two-side irradiation is three times higher than in the case of one-side irradiation using a single 12.5 PW laser. Dense electron-positron plasma with a maximum density of 6 × 1027 m−3 are generated simultaneously during the two-side irradiation which is eightfold denser compared to the one-side irradiation. The enhancement of the effects in the case of counter-propagating lasers are the results of the symmetrical compression of the foil target and the formation of electric potential and standing wave around the target. Realizing experimentally the proposed counter-propagating QED-strong laser-solid interaction to produce dense electron-positron pairs and prolific γ-rays will be made possible by the Extreme Light Infrastructure-Nuclear Physics facility under construction.
语种：
英文
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基于CFD方法的行波堆19燃料棒束流固耦合传热特性研究
作者：
卢川;严明宇;毕树茂;宋英明
期刊：
原子能科学技术 ,2015年49(12):2170-2175 ISSN：1000-6931
作者机构：
[严明宇; 卢川; 毕树茂] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, China;[宋英明] School of Nuclear Science and Technology, University of South China, Hengyang, China
关键词：
行波堆;燃料棒束;流固耦合传热
摘要：
采用流固耦合传热方法对行波堆19燃料棒束流动及传热特性进行了研究。研究结果表明:出口区域燃料棒呈现出非对称和偏心温度分布特性;下游区域流体截面温度分布差别较大;包壳表面热流密度分布差别明显,螺旋绕肋结构具有局部强化换热的能力;出口区域发现了局部倒传热现象。该组件结构有待将来进一步借助流固耦合传热分析方法进行优化改进。
语种：
中文
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低温氮、氧等离子体处理碳纤维/树脂复合材料
作者：
杨涛;倪新亮;金凡亚;沈丽如;陈美艳;...
期刊：
真空科学与技术学报 ,2015年35(10):1214-1219 ISSN：1672-7126
通讯作者：
Jin, Fanya
作者机构：
[沈丽如; 陈美艳; 童洪辉; 金凡亚; 杨涛; 倪新亮] China Southwestern Institute of Physics, Chengdu, China;[倪新亮] School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, China;[龚学余; 杨涛] School of Nuclear Science and Technology, University Of South China, Hengyang, China
通讯机构：
China Southwestern Institute of Physics, Chengdu, China
关键词：
氮等离子体;氧等离子体;浸润性;极性基团;碳纤维/树脂复合材料
摘要：
采用霍尔源辉光放电产生氧等离子体和氮等离子体,对成型碳纤维/树脂复合材料进行表面处理,通过浸润性分析、红外光谱分析和扫描电镜分析,探究氮、氧等离子体对碳纤维/树脂复合材料的影响,同时考察处理前后碳纤维/树脂复合材料表面基团和形貌的变化。结果显示氮、氧等离子体处理后碳纤维/树脂复合材料与去离子水的接触角随气压和电流的增大均先迅速降低再缓慢增加,在电流为1.0 A,气压为1.0 Pa时,处理结果较佳,氧等离子体处理后碳纤维/树脂复合材料在去离子水中活化时效性稍强于氮等离子体;氮、氧等离子体处理后碳纤维/树脂复合材料表面刻蚀现象明显,粗糙度提高,纤维树脂间粘连程度增加,红外分析表明甲基、酯基被打断,分别引入CH_2-O-CH_2和C=N、C≡N等极性基团,上述结果表明:氮、氧等离子体处理是提高成型碳纤维/树脂复合材料表面性能的有效方法。
语种：
中文
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A study on the burn-up characteristics of inert matrix fuels
作者：
Yu, Tao;Wu, Xiang* ;Xie, Jin-sen;Qin, Mian;Li, Zhi-feng;...
期刊：
Progress in Nuclear Energy ,2015年78:341-345 ISSN：0149-1970
通讯作者：
Wu, Xiang
作者机构：
[Chen, Hao-wei; Wu, Xiang; Liu, Zi-jing; Xie, Jin-sen; Li, Zhi-feng; Yu, Tao; Qin, Mian] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Wu, Xiang] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
关键词：
Inert matrix fuels (IMFs);Burn-up characteristics;Minor actinides production;Transuranium element (TRU)
摘要：
Proper disposal of minor actinides (MA), long-lived fission products (LLFPs), and transuranium element (TRU) plays a key role in the sustainable development of fission nuclear power. Adoption of inert matrix fuels (IMFs) can effectively reduce the amount of<sup>237</sup>Np and Np element in the spent fuel of present-day commercial power reactors. In order to study the burn-up characteristics of IMFs caused by the unique composition, burn-up calculations and MA accumulation of two typical IMFs, PuO<inf>2</inf>+ ZrO<inf>2</inf>+ MgO and PuO<inf>2</inf>+ ThO<inf>2</inf>, are performed in this paper. Results indicate that k<inf>inf</inf>at beginning of life (BOL) and reactivity drop with burn-up for PuO<inf>2</inf>+ ZrO<inf>2</inf>+ MgO are much larger than those of PuO<inf>2</inf>+ ThO<inf>2</inf>IMF. The yields of<sup>237</sup>Np and Np element in IMFs are two orders smaller than those of UO<inf>2</inf>and mixed oxide (MOX) fuels. For the same PuO<inf>2</inf>volume fraction and a certain burn-up, the masses of<sup>237</sup>Np, Np element, and<sup>241</sup>Am for PuO<inf>2</inf>+ ZrO<inf>2</inf>+ MgO are smaller than those of PuO<inf>2</inf>+ ThO<inf>2</inf>;however, the mass of total MA is larger. IMF has high destruction efficiencies of TRU and plutonium (Pu). The results and conclusion provide basic data for the ongoing IMF design and application study. ©2014 Elsevier Ltd. All rights reserved.
语种：
英文
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Electrochemical reactions of the Th4+/Th couple on the tungsten, aluminum and bismuth electrodes in chloride molten salt
作者：
Liu, Kui;Yuan, Li-Yong;Liu, Ya-Lan;Zhao, Xiu-Liang;He, Hui;...
期刊：
Electrochimica Acta ,2014年130:650-659 ISSN：0013-4686
通讯作者：
Shi, Wei-Qun
作者机构：
[Liu, Ya-Lan; Yuan, Li-Yong; Liu, Kui; Chai, Zhi-Fang; Shi, Wei-Qun] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Radiat & Nucl Energy Technol, Beijing 100049, Peoples R China.;[Liu, Kui; Zhao, Xiu-Liang] Univ South China, Sch Nucl Sci & Technol, HengYang 421000, Peoples R China.;[Chai, Zhi-Fang] Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China.;[Liu, Ya-Lan; Ye, Guo-An; He, Hui] China Inst Atom Energy, Div Radiochem, Beijing 102413, Peoples R China.
通讯机构：
[Shi, Wei-Qun] C;Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Radiat & Nucl Energy Technol, Beijing 100049, Peoples R China.
摘要：
This work concerns the electrochemical behaviors of Th4+ on the tungsten, aluminum and bismuth electrodes in the LiCl-KCl eutectic, respectively, at 773 K. Cyclic voltammetry and square wave voltammetry were employed to investigate the cathodic reduction of Th4+. The results demonstrate that the reduction of Th4+ is a one step process with a transfer of 4 electrons. The reversibility of the Th4+/Th couple on the bismuth film and tungsten electrodes is directly confirmed by the CV. The diffusion coefficient is also calculated to be (2.23 ± 0.16) × 10-5 and (7.19 ± 0.12) × 10-5 cm 2/s by applying both cyclic voltammetry and chronopotentiometry, respectively. A series of redox couples were confirmed to be associated with the formation of different kinds of Al-Th intermetallic compounds. Compared to Al electrode, a cathodic shift of the reduction potential of the Th4+ is observed on the Al film electrode which is not conducive for the potentiostatic extraction of thorium. The cathodic depolarization gives a shift of 420 mV on the Al electrode, while 490 mV on the Bi film electrode for the reduction of Th4+ compared to the inert W electrode. The reduction potential of Th4+ on the Bi film electrode is 70 mV more anodic than that on the Al electrode. Potentiostatic electrolyses were carried out on an Al plate and Bi liquid electrode to confirm the formation of the Th alloys. Two Al-Th alloys (Al3Th and Al2Th) and one Bi-Th alloy (Bi2Th) were obtained, respectively. © 2014 Published by Elsevier Ltd.
语种：
英文
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Electroextraction of samarium from Sm2O3 in chloride melts
作者：
Liu, Kui;Liu, Ya-Lan;Yuan, Li-Yong;He, Hui;Yang, Zhi-Yuan;...
期刊：
Electrochimica Acta ,2014年129:401-409 ISSN：0013-4686
通讯作者：
Zhao, Xiu-Liang
作者机构：
[Liu, Kui; Yang, Zhi-Yuan; Zhao, Xiu-Liang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421000, Peoples R China.;[Liu, Ya-Lan; Yuan, Li-Yong; Liu, Kui; Chai, Zhi-Fang; Shi, Wei-Qun] Chinese Acad Sci, Inst High Energy Phys, Key Lab Radiat & Nucl Energy Technol, Grp Nucl Energy Radiochem, Beijing 100049, Peoples R China.;[Chai, Zhi-Fang] Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China.;[He, Hui] China Inst Atom Energy, Div Radiochem, Beijing 102413, Peoples R China.
通讯机构：
[Zhao, Xiu-Liang] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421000, Peoples R China.
关键词：
Sm_2O_3;LiCl-KCl;Electroextraction;Co-reduction;Sm-Al alloy
摘要：
This work firstly presents an electrochemical study of samarium extraction from Sm2O3 in the LiCl-KCl-AlCl3 melts. Gibbs energy calculation shows that AlCl3 can favorably chloridize Sm 2O3 and release Sm3+ ions under this condition. The electrochemical behaviors of Al3+, Sm3+ and the mechanisms of alloy formation were investigated using a series of electrochemical techniques on a molybdenum electrode. Two typical signals corresponding to different kinds of Sm-Al alloys were observed in the cyclic voltammetry and square wave voltammetry. The transformation process from one AlxSmy biphasic phase to another was revealed by open circuit chronopotentiometry. The Sm-Al alloy samples were prepared by potentiostatic and galvanostatic electrolysis on an aluminium electrode. SEM-EDS and XRD analysis demonstrated that a layer of SmAl3 can be formed by potentiostatic electrolyses, whereas two kinds of intermetallic compounds of SmAl4 and SmAl3 can be formed by galvanostatic electrolysis. In addition, the electroextraction of samarium by co-reduction with Al3+ on the aluminium electrode has been performed with extraction efficiency of 88.7% for potentiostatic electrolysis and 94% for galvanostatic electrolysis, respectively. © 2014 Elsevier Ltd.
语种：
英文
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反应堆中子注量率相对分布测量装置中多通道放大甄别器研制
作者：
赵艳辉;刘丽艳;黄顺;刘才学;踪训成;...
期刊：
原子能科学技术 ,2014年48(2):347-351 ISSN：1000-6931
通讯作者：
Zhao, X.-L.(zhaoxiul@163.com)
作者机构：
[赵艳辉] School of Electrical Engineering, University of South China, Hengyang 421001, China;[刘才学; 踪训成] Nuclear Power Institute of China, Chengdu 610041, China;[黄顺] Department of Physics and Information Science, Hengyang Normal College, Hengyang 421008, China;[刘丽艳; 赵修良] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Science and Technology, University of South China, China
关键词：
中子注量率;放大甄别器;放大器增益;最小输入脉冲宽度;最大计数率
摘要：
为了测量反应堆内中子注量率分布，保证反应堆内活化55 M n-58 Ni合金探测片γ计数测量的可靠性，本文研制了中子注量率分布测量装置中9通道放大甄别器。多通道放大甄别器性能指标测试与应用测试结果表明：每个通道放大器增益1～21连续可调、甄别器阈值独立连续可调，具有最大计数率高、灵敏度高、稳定性好、系统抗串扰能力强等优点；放大器增益长期稳定性≤1％，甄别器最小输入脉冲宽度≥0.1μs ，甄别器最大计数率≤4×106 s-1，能用于实时长期稳定测量反应堆内中子注量率分布。
语种：
中文
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R FQ冷却聚束器束流冷却后的性质模拟
作者：
朱志超;黄文学;罗文;周青芝;宋英明;...
期刊：
原子能科学技术 ,2014年48(8):1508-1515 ISSN：1000-6931
通讯作者：
Song, Ying-Ming
作者机构：
[朱志超] 南华大学 核科学技术学院，湖南 衡阳 421001;中国科学院 近代物理研究所，甘肃 兰州 730000;中国科学院 近代物理研究所,甘肃 兰州,730000;南华大学 核科学技术学院,湖南 衡阳,421001;[罗文; 宋英明; 周青芝] 南华大学
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
关键词：
冷却;相空间;蒙特卡罗
摘要：
介绍了RFQ冷却聚束器的基本工作原理和束流在其中被约束和冷却的过程。采用真实相互作用势（RIP）模型进行蒙特卡罗模拟，得出束流在RFQ冷却聚束器中完全冷却后的性质。结果表明：束流冷却后的束斑和能量分散随时间一直保持平衡；束流冷却后束斑和能量分散不随缓冲气体气压、入射离子能量的变化而变化；冷却后束斑半径与射频（RF ）四极电场频率呈反比，而冷却后束流的能量分散仅与温度有关。
语种：
中文
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NRL-1型测氡仪的绝对湿度效应研究
作者：
单健;肖德涛;赵桂芝;周青芝;刘彦;...
期刊：
原子能科学技术 ,2014年48(9):1707-1711 ISSN：1000-6931
通讯作者：
Shan, Jian
作者机构：
[丘寿康; Shan, Jian; 赵桂芝; 刘彦; 熊信明; 刘小松; 孟冶成; 周青芝; 肖德涛; 马文荣] School of Nuclear Science and Technology, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
关键词：
氡;测氡仪;绝对湿度效应
摘要：
本文根据目前国内外对绝对湿度效应的研究现状,针对绝对湿度对 N RL-1型测氡仪探测效率的影响,建立了N RL-1型测氡仪温湿度修正的实验方案。通过对南华大学氡实验室氡活度浓度的控制、温湿度调节方案进行分析与改进,控制实验中的绝对湿度变化,得到了不同绝对湿度下的修正因子,并获得了绝对湿度在1.90~14.91 g/m~3范围内的温湿度修正曲线,从而成功地对N RL-1型测氡仪进行了温湿度效应修正。实验结果表明:综合考虑绝对湿度的情况下,在绝对湿度小于2.4 g/m~3时,N RL-1型连续测氡仪的收集效率趋近于常数;其绝对湿度的修正因子基本接近于1;而随着绝对湿度的增大,修正因子呈非线性增长。
语种：
中文
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压水堆环境下惰性基质燃料物理参数研究
作者：
于涛;谢金森;李志峰;刘紫静;左国平;...
期刊：
核动力工程 ,2014年35(5):1-3 ISSN：0258-0926
通讯作者：
Yu, Tao
作者机构：
[谢金森; 刘紫静; 左国平; 何丽华; 李小华; 李志峰; 于涛] School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, China;[谢金森] China Institute of Atomic Energy, Beijing, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, China
关键词：
惰性基质燃料(IMF);燃料温度系数;慢化剂温度系数;可行区间
摘要：
为研究惰性基质燃料(IMF)在压水堆(PWR)中应用的可行性,计算比较了PuO_2+ZrO_2+MgO和PuO_2+ThO_2 2种典型IMF的栅格无限增殖系数k_(inf)、燃料温度系数D_c和慢化剂温度系数M_(TC)随燃料中PuO_2体积分数的变化规律,得到满足D_c、M_(TC)为负的要求下IMF成分的初步可行区间。
语种：
中文
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多通道中子注量率相对分布测量装置研制
作者：
赵修良;黄顺;刘丽艳;刘才学;踪训成
期刊：
核动力工程 ,2014年35(4):82-85 ISSN：0258-0926
通讯作者：
Zhao, Xiuliang
作者机构：
[赵修良; 刘丽艳] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;[黄顺] Physical and Electronic Information Science, Hengyang Normal College, Hengyang;421008, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, China
关键词：
中子注量率;多通道测量装置;PTMC12数据采集板卡;MNFDAS软件
摘要：
为了实现反应堆堆芯中子注量率相对分布的测量,基于NaI 探测器测量活化探测片放射性计数来计算相对中子注量率的方法,研制多通道中子注量率相对分布测量装置。该装置由 PTMC12数据采集板卡、工控机和MNFDAS 控制软件组成,可自动实现循环计数或非循环模式下的定时计数功能,测量结果以数据图形和文件形式保存。测试结果表明,该装置稳定性好,相对偏差在±1%之内,可保证反应堆内中子注量率相对分布实时长期稳定测量的要求。
语种：
中文
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核电厂严重事故工况下仪表可用性评价的电路仿真建模方案研究
作者：
黄有骏;陈智;邹树梁;余俊辉;孔翔程
期刊：
核动力工程 ,2014年35(5):47-52 ISSN：0258-0926
通讯作者：
Huang, Youjun
作者机构：
[黄有骏; 陈智] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu , China;[孔翔程; 余俊辉] Nuclear Power Design and Research Sub-Institute, Nuclear Power Institute of China, Chengdu , China;[邹树梁] Cooperative Innovation Center for Nuclear Fuel Cycle Technology and Equipment, University of South China, Hengyang, Hunan, China;[黄有骏] School of Nuclear Science and Technology, University of South China, Hengyang, , Hunan, China
通讯机构：
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, China
关键词：
严重事故;仪表可用性;仿真模型
摘要：
核电厂严重事故工况下的仪表可用性评价一般采用曲线包络法。但由于曲线包络法存在一定的局限性,应用PSpice电路仿真方法对其进行补充,对电路仿真建模方案进行分析。根据严重事故工况环境现象及仪表失效相关数据库,结合核电厂仪表的特点,建立电路仿真模型,将仿真结果同三里岛事故仪表分析报告进行对比验证。结果表明,采用的建模方案具备合理性。
语种：
中文
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Electrochemical formation of erbium-aluminum alloys from erbia in the chloride melts
作者：
Liu, Kui;Liu, Ya-Lan;Yuan, Li-Yong;Zhao, Xiu-Liang;He, Hui;...
期刊：
Electrochimica Acta ,2014年116:434-441 ISSN：0013-4686
通讯作者：
Shi, Wei-Qun
作者机构：
[Liu, Ya-Lan; Yuan, Li-Yong; Liu, Kui; Chai, Zhi-Fang; Shi, Wei-Qun] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Radiat & Nucl Energy Technol, Beijing 100049, Peoples R China.;[Liu, Kui; Zhao, Xiu-Liang] Univ South China, Sch Nucl Sci & Technol, Hengyang 421000, Peoples R China.;[Chai, Zhi-Fang] Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China.;[Liu, Ya-Lan; Ye, Guo-An; He, Hui] China Inst Atom Energy, Div Radiochem, Beijing 102413, Peoples R China.
通讯机构：
[Shi, Wei-Qun] C;Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Radiat & Nucl Energy Technol, Beijing 100049, Peoples R China.
关键词：
Molten salts;electrodeposition;erbium;Er-Al alloys
摘要：
This work presents an electrochemical study of Er<sup>3+</sup> and Al <sup>3+</sup> in the LiCl-KCl-AlCl<inf>3</inf>-Er<inf>2</inf>O<inf>3</inf> melts at 773 K. Gibbs energy calculation shows that AlCl<inf>3</inf> can favorably chloridize Er<inf>2</inf>O<inf>3</inf> and release Er<sup>3+</sup> ions under this condition. Cyclic voltammetry, square wave voltammetry, chronopotentiometry and open-circuit chronopotentiometry were applied using a molybdenum electrode to investigate the reduction behavior of Er<sup>3+</sup> and Al<sup>3+</sup> and to identify the Er-Al alloys. A series of redox signals corresponding to different kinds of Er-Al alloys were revealed. Potentiostatic and gavanostastic electrolysis were both conducted on an aluminium electrode to prepare the Er-Al alloys. The obtained deposits were charaterized by SEM-EDS and XRD. A layer of ErAl<inf>3</inf> was obtained by potentiostatic electrolysis, whereas two kinds of intermetallic compounds of ErAl<inf>3</inf> and ErAl<inf>2</inf> were formed by galvanostatic electrolysis. ©2013 Elsevier Ltd. All rights reserved.
语种：
英文
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Experimental study on measurement of 220 Rn by time interval analysis method
作者：
杨朝桐;颜拥军;付德顺;周剑良;丘寿康
期刊：
原子能科学技术 ,2014年48(9):1712-1717 ISSN：1000-6931
通讯作者：
Yan, Yong-Jun
作者机构：
[付德顺; 杨朝桐; 周剑良; 丘寿康; 颜拥军] School of Nuclear Science and Technology, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
关键词：
时间间隔分析方法;闪烁室探测器
摘要：
介绍了一种测量低浓度~(220) Rn的方法---时间间隔分析方法。~(220) Rn原子发生衰变发射α粒子并产生~(216) Po时,在很短时间内,~(216) Po衰变(半衰期0.145 s)又发射α粒子。多时间分析方法就是对2个连续发射的α粒子的时间间隔进行分析,使~(220) Rn从~(222) Rn中分辨出来。本实验通过卢卡斯氡探测器(FD125)对10 Bq的~(220) Rn标准源进行流气式测量。当~(222) Rn活度小于10倍左右~(220) Rn活度时,计数率控制在60 min~(-1)以内,时间分辨率设置为1 ms,测量时间为10h,测量结果的相对偏差在7%内。
语种：
中文
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惰性基质燃料元件Doppler系数分析
作者：
于涛;谢金森;李志峰;刘紫静;左国平;...
期刊：
原子能科学技术 ,2014年48(6):1067-1071 ISSN：1000-6931
通讯作者：
Yu, T.
作者机构：
[李志峰; 李小华; 刘紫静; 谢金森; 左国平; 于涛] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;[谢金森] Department of Reactor Engineering Research and Design, China Institute of Atomic Energy, Beijing 102413, China
通讯机构：
School of Nuclear Science and Technology, University of South China, China
关键词：
惰性基质燃料;Doppler系数;蒙特卡罗模拟
摘要：
本文采用中子输运程序MCNP ，基于ENDF/B-Ⅶ.1核数据库，对几种典型惰性基质燃料（IMF）的Doppler系数进行了计算，并通过理论分析给出了各核素对Doppler系数贡献的表达式。结果表明：在相同惰性基质条件下，武器级Pu燃料的Doppler系数的绝对值小于反应堆级Pu燃料的；在惰性基质中添加232 Th可使Doppler系数更负，且可使IMF获得与低浓 UO2燃料相近的Doppler系数；硼可燃毒物对Doppler系数的贡献为正效应，而铒可燃毒物则可进一步增强负Doppler系数，有利于反应堆的固有安全性。
语种：
中文
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Fully implicit iterative solving method for the fokker-planck equation in tokamak plasmas
作者：
Zheng Pingwei;Gong Xueyu* ;Yu Jun;Du Dan
期刊：
等离子体科学与技术：英文版 ,2014年16(11):1000-1006 ISSN：1009-0630
通讯作者：
Gong Xueyu
作者机构：
[Zheng Pingwei] Univ South China, Sch Environm Protect & Safety Engn, Hengyang 421001, Peoples R China.;[Gong Xueyu] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Yu Jun; Gong Xueyu; Du Dan] Univ South China, Dept Math & Phys, Hengyang 421001, Peoples R China.
通讯机构：
[Gong Xueyu] U;Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
关键词：
tokamak plasmas;Fokker-Planck equation;current drive;benchmark
摘要：
A three dimensional bounce-averaged Fokker-Planck (FP) numerical code has been newly developed based on fully implicit iterative solving method, and relativistic effect is also included in the code. The code has been tested against various benchmark cases: Ohmic conductivity in the presence of weak Ohmic electric field, runaway losses of electrons in the presence of strong Ohmic electric field, lower hybrid current drive and electron cyclotron current drive via two- or three-dimensional simulation. All the test cases run fast and correctly during calculations. As a result, the code provides a set of powerful tools for studying radio frequency wave heating and current drive in tokamak plasmas.
语种：
英文
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