摘要：
We theoretically investigate the Autler-Townes (AT) splitting in the photoelectron spectra of threelevel ladder K2 molecule driven by a pump-probe pulse via employing the time-dependent wave packet approach. The effect of the pump/probe laser intensity and wavelength on AT splitting is detailed studied. The magnitude of AT splitting increases with increasing the pump laser intensity, but does not vary with probe intensity. The double splitting with asymmetric profiles arises due to the nonresonant excitation. The double structure is transformed into one peak progressively as the pump is detuned from the resonance wavelength, which can be explained in terms of the asymmetric excitation/population of dressed states. The splitting between AT doublet changes with pump wavelength, but does not change with probe wavelength. The double peaks shift to lower energy with the different shift with increasing pump wavelength, but with the same shift with probe wavelength.
期刊：
Metallurgical and Mining Industry,2015年7(8):78-85 ISSN：2076-0507
通讯作者：
Zou, Shuliang(3467593@qq.com)
作者机构：
[Zhang, Min] School of Nuclear Science and Technology, University of South China, Hengyang, China;[Zhang, Min; Zou, Shuliang] Hunan Provincial Key Laboratory of Emergency Safety Technology, Equipment for Nuclear Facilities, Hengyang, China;[Zhang, Min; Zou, Shuliang] School of Math and Physics, University of South China, Hengyang, China
通讯机构：
School of Math and Physics, University of South China, Hengyang, China
关键词：
Concentration dominance of adiacent point;Cubic spline interpolation;Inversion;MCNP program simulation;Radiation concentration field;Structure
摘要：
In this paper, the inversion of the particle field is put forward by a function constructed for solid radioactive sources. Based on the inverse proportion between concentration and the square of the distance from the radioactive source, the concentrations surface near the radioactive source is sharp, steep and concave. The concentration surface may be convex where the nuclear radiation field is restored with sparse data by interpolation or fitting. Hence we make use of mathematical construction techniques to construct concentration function tactfully. An inversion model is established which is based on the concentration of nodes in the grid. The concentration value of the grid lines is restored by the cubic spline interpolation. According to an idea of concentration dominance of adjacent point, the function of interior point of grid is structured, which is consistent with the characteristics of the radiation field. During the simulation experiment, concentration value of node is obtained by MCNP program based on the Monte Carlo method. It is verified that the concentration function is close to the real concentration field. Therefore inversion method is feasible, which provides theoretical basis for radioactive sources search and safe evacuation.
作者机构：
[Yin Lan; Du Dan] Univ South China, Dept Math & Phys, Hengyang 421001, Peoples R China.;[Gong Xueyu; Xiang Dong; Li Jingchun] Univ South China, Sch Nucl Sci & Technol, 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：
ICRH antenna;impedance matching;transmission line theory
摘要：
The impedance matching is crucial for continuous wave operation of ion cyclotron resonance heating (ICRH) antennae with high power injection into plasmas. A sudden increase in the reflected radio frequency power due to an impedance mismatch of the ICRH system is an issue which must be solved for present-day and future fusion reactors. This paper presents a method for theoretical analysis of ICRH system impedance matching for a triple liquid stub tuner under plasma operational conditions. The relationship of the antenna input impedance with the plasma parameters and operating frequency is first obtained using a global solution. Then, the relations of the plasma parameters and operating frequency with the matching liquid heights are indirectly obtained through numerical simulation according to transmission line theory and matching conditions. The method provides an alternative theoretical method, rather than measurements, to study triple liquid stub tuner impedance matching for ICRH, which may be beneficial for the design of ICRH systems on tokamaks.
摘要：
The electron cyclotron wave (ECW) current drive (CD) for the HL-2A tokamak is investigated numerically with a new ray-tracing and Fokker-Planck code. The code is benchmarked with other well-tested linear and quasilinear codes and is then used to study the electron cyclotron current drive on the HL-2A tokamak. The wave propagation, power deposition, and driven-current profiles are presented. The effect of electron trapping is also assessed. It is found that quasilinear effects are negligible at the present ECW power levels and that when both waves are injected at an angle of 20° on the plasma equatorial plane, the CD efficiency for the HL-2A saturates at ∼0.029 × 1020 A/W/m2 and ∼0.020 × 1020 A/W/m2 for the 0.5 MW/68 GHz first harmonic ordinary (O1) and 1 MW/140 GHz second harmonic extraordinary (X2) modes, respectively. The effects of the plasma density, temperature, and wave-launching position on the driven current are also investigated analytically and numerically.
作者机构：
[谭桢干; 李卓成; 罗文; 王晓冬] School of Nuclear Science and Technology, University of South China, Hengyang, China;[罗文] Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
通讯机构：
[Luo, W.] S;School of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[于涛; 李志峰; 谢金森] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;[彭红花] Shanghai Institute of Applied Physics, Shanghai;201800, China
作者机构：
[王玉林; 贾月光; 杨坤; 甄建霄; 朱学微] China Institute of Atomic Energy, P.O. Box 275-100, Beijing, China;[殷浩哲] Institute of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[李瑞瑞; 夏良树; 肖益群; 黄欣] School of Nuclear Science and Technology, University of South China, Hengyang, China;[李广] School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[胡鸿; 张力] College of Nuclear Science and Technology, University of South China, Hengyang, China;[李鹏程; 蒋建军] Human Factors Institute, University of South China, Hengyang, China;[胡鸿; 陈青青; 易灿南; 张力] Ergonomics and Safety Management Institute, Hunan Institute of Technology, Hengyang, China
关键词：
数字化核电厂;操纵员;监视;人因可靠性分析;监视行为可靠性
摘要：
为了建立数字化核电厂操纵员监视行为可靠性量化模型，在分析电厂数字化主控室设计特征和操纵员监视行为的基础上，结合监视活动过程与规律，将监视行为可靠性划分为屏幕间转移可靠性、屏幕内信息搜索转移可靠性和信息察觉可靠性3部分。基于Senders的监视理论建立了屏幕间转移可靠性计算模型；基于注意力资源分配理论建立了屏幕内信息搜索转移可靠性计算模型；考虑行为形成因子（PS F ）的因果关系，基于贝叶斯网络建立了信息察觉可靠性计算模型，并给出了“误安注”场景下监视可靠性计算应用实例。结果表明，建立的监视行为可靠性模型既能客观地描述操纵员监视过程，又能给出其可靠性量化结果，克服了传统方法的不足，提高了人因可靠性分析的精度，为数字化主控室操纵员监视行为可靠性分析与工程应用提供了理论与技术支持。
摘要：
Excited-states ab initio molecular dynamics model is employed to study the electronic stopping power of cubic silicon carbide nanocrystal when low-energy protons and helium ions are hyperchanneling in the [1 0 0], [1 1 0] and [1 1 1] major crystal axes. The energy transfer processes between the ions and the electronic subsystem of the cubic silicon carbide nanocrystalline are studied. The channeling effect in the electronic stopping power is determined by the unique electronic structure of these channels. The velocity-proportional stopping power is predicted for both protons and helium ions in the low-energy region. The calculated stopping power is in a quantitative agreement with the experimental data up to the stopping power maximum. The deviations of the stopping power of helium ions from the linear proportionality are attributed to the electron transfer at higher velocities. (C) 2014 Elsevier B.V. All rights reserved.
作者：
Zhang, Min;Xu, Zheng Hua;Zou, Shu Liang;Song, Ying Ming;Wen, Shi Wei
期刊：
International Journal of Simulation: Systems, Science and Technology,2015年16(2):12.1-12.4 ISSN：1473-8031
通讯作者：
Xu, Zheng Hua(emin1217@sina.com)
作者机构：
[Zhang, Min; Xu, Zheng Hua] School of Mathematics and Physics, University of South China, HengYang, Hunan, China;[Wen, Shi Wei] School of Computer Science and Technology, University of South China, HengYang, Hunan, China;[Zhang, Min; Song, Ying Ming; Zou, Shu Liang] School of Nuclear Science and Technology, University of South China, HengYang, Hunan, China
通讯机构：
School of Mathematics and Physics, University of South China, HengYang, Hunan, China
作者机构：
[张力] Hunan Institute of Technology, Hengyang, Hunan, China;[鄢跃勇] State Nuclear Power Automation System Engineering Company, Shanghai, China;[青涛; 鄢跃勇; 戴立操; 张力] Human Factors Institute, University of South China, Hengyang, Hunan, China;[青涛; 鄢跃勇; 张力] College of Nuclear Science and Technology, University of South China, Hengyang, Hunan, China
作者机构：
[Zhang, Li; Zou, Yanhua] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.;[Zhang, Li; Zou, Yanhua] Hunan Inst Technol, Inst Human Factors Engn & Safety Management, Hengyang 421002, Hunan, Peoples R China.;[Zhang, Li] Univ South China, Human Factor Inst, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Zou, Yanhua] H;Hunan Inst Technol, Inst Human Factors Engn & Safety Management, Hengyang 421002, Hunan, Peoples R China.
关键词：
Boolean network;Digital main control room;Dynamic evolution;Human reliability analysis;Operators' behavior;Semi-tensor product
摘要：
Digitalization is a trend in large-scale complex systems such as nuclear power plants (NPPs). It changes the way main control room (MCR) operators interact with systems. Many studies shows that the adoption of digital technology has brought some new risks for MCR operators, and whether the reliability of these technologies can meet safety and economic requirements has become one of the urgent problems that NPPs must solve. The study consists of two parts. In Part I, we investigated the dynamic evolution of operators' four behaviors: monitoring and detection (MD), situation assessment (SA), response planning (RP), and response implementation (RI). This paper incorporates Boolean network (BN) analysis into the field of human reliability analysis (HRA), by applying semi-tensor product of matrix (STP), whereby the dynamics evolution of operators' behavior can be expressed in an algebraic form. Utilizing this algebraic representation, a BN analysis model is proposed, on which we based a qualitative analysis. An illustrative example is given to show how to construct the BN model via experimental data. We also discuss the advantage of the proposed methodology, its feasibility and highlighting the future work remaining. (C) 2015 Elsevier Ltd. All rights reserved.
作者机构：
[王亮; 李新霞; 龚学余] School of Nuclear Science and Technology, University of South China, Hengyang, China;[李新霞] Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[余江妹; 张能; 龚学余; 谢宝艺] School of Mathematics and Physics, University of South China, Hengyang, China;[李景春; 黄千红; 龚学余; 侯伟] 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
