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Optoelectronics Letters 2022年第12期18卷 723-729页

作者： LI Junwei JIA Weimin SHI Chengying WANG Zujun LI Zhengcao Key Lab of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Xi’an Research Institute of High-Technology Xi’an710025China Northwest Institute of Nuclear Technology Xi’an710024China

The degradation on the GaInP/GaAs/Ge triple-junction solar cells was irradiated by proton, and the solar cells with various GaAs sub-cell doping concentrations are modeled by the technology computer aided design(TCAD) simulation. The degradation results of related electrical parameters and external quantum efficiency(EQE) are studied. The degradation mechanism irradiated by proton is discussed. The short-circuit current, maximum power and conversion efficiency decrease with the increasing of GaAs sub-cell doping concentration. When the base doping concentration of GaAs sub-cell is 1×1016cm-3, the degradation of short-circuit current is less than that of other base doping concentrations. Furthermore, under proton irradiation, with the increase of doping concentration of GaAs sub-cell, the open-circuit voltage first increases and then decreases. Meanwhile, when the base doping concentration of GaAs sub-cell is 2×10^(17)cm^(-3), the degradation of open-circuit voltage is less than that of other base doping concentrations. The research will provide the basic theories and device simulation method for GaInP/GaAs/Ge triple-junction solar cells radiation damage evaluation study and radiation hardening, and can provide guidance for the production of triple-junction solar cells in orbit.

关键词： doping irradiated junction

High-energy-density plasma in femtosecond-laser-irradiated nanowire-array targets for nuclear reactions

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Matter and Radiation at Extremes 2022年第6期7卷 29-40页

作者： Defeng Kong Guoqiang Zhang Yinren Shou Shirui Xu Zhusong Mei Zhengxuan Cao Zhuo Pan Pengjie Wang Guijun Qi Yao Lou Zhiguo Ma Haoyang Lan Wenzhao Wang Yunhui Li Peter Rubovic Martin Veselsky Aldo Bonasera Jiarui Zhao Yixing Geng Yanying Zhao Changbo Fu Wen Luo Yugang Ma Xueqing Yan Wenjun Ma State Key Laboratory of Nuclear Physics and Technology and Key Laboratory of HEDP of the Ministry of EducationCAPTSchool of PhysicsPeking UniversityBeijing 100871China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Nuclear Science and Technology University of South ChinaHengyang 421001China INPAC and School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China Institute of Experimental and Applied Physics Czech Technical University in PragueHusova 240/511000 Prague 1Czech Republic ELI Beamlines Center Institute of Physics of the Czech Academy of Sciences25241 DolníBrezanyCzechia Cyclotron Institute Texas A&M UniversityCollege StationTexas 77843USA Laboratori Nazionali del Sud INFNvia Santa Sofia62Catania 95123Italy Beijing Laser Acceleration Innovation Center HuairouBeijing 101400China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China

In this work,the high-energy-density plasmas(HEDP)evolved from joule-class-femtosecond-laser-irradiated nanowire-array(NWA)targets were numerically and experimentally studied.The results of particle-in-cell simulations indicate that ions accelerated in the sheath field around the surfaces of the nanowires are eventually confined in a plasma,contributing most to the high energy densities.The protons emitted from the front surfaces of the NWA targets provide rich information about the interactions that occur.We give the electron and ion energy densities for broad target parameter ranges.The ion energy densities from NWA targets were found to be an order of magnitude higher than those from planar targets,and the volume of the HEDP was several-fold greater.At optimal target parameters,8%of the laser energy can be converted to confined protons,and this results in ion energy densities at the GJ/cm^(3) level.In the experiments,the measured energy of the emitted protons reached 4 MeV,and the changes in energy with the NWA’s parameters were found to fit the simulation results well.Experimental measurements of neutrons from 2H(d,n)3He fusion with a yield of(24±18)×10^(6)/J from deuterated polyethylene NWA targets also confirmed these results.

关键词： irradiated confined eventually

Laser-driven electrodynamic implosion of fast ions in a thin shell

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Matter and Radiation at Extremes 2023年第5期8卷 73-81页

作者： S.Yu.Gus’kov Ph.Korneev M.Murakami P.N.Lebedev Physical Institute of Russian Academy of Sciences 53 Leninskii Prospect119991 MoscowRussian Federation Institute of Laser Engineering Osaka University565-0871 OsakaJapan

Collision of laser-driven subrelativistic high-density ion flows provides a way to create extremely compressed ion conglomerates and study their properties.This paper presents a theoretical study of the electrodynamic implosion of ions inside a hollow spherical or cylindrical shell irradiated by femtosecond petawatt laser pulses.We propose to apply a very effective mechanism for ion acceleration in a self-consistent field with strong charge separation,based on the oscillation of laser-accelerated fast electrons in this field near the thin shell.Fast electrons are generated on the outer side of the shell under irradiation by the intense laser pulses.It is shown that ions,in particular protons,may be accelerated at the implosion stage to energies of tens and hundreds of MeV when a sub-micrometer shell is irradiated by femtosecond laser pulses with an intensity of 10^(21)–10^(23)W cm^(−2).

关键词： dynamic thin irradiated

A review:applications of the phase field method in predicting microstructure and property evolution of irradiated nuclear materials

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npj Computational Materials 2017年第1期3卷 333-349页

作者： Yulan Li Shenyang Hu Xin Sun Marius Stan Pacific Northwest National Laboratory 902 Battelle BoulevardRichlandWA 99352USA Argonne National Laboratory 9700 South Cass AvenueLemontIL 60439USA

Complex microstructure changes occur in nuclear fuel and structural materials due to the extreme environments of intense irradiation and high temperature.This paper evaluates the role of the phase field method in predicting the microstructure evolution of irradiated nuclear materials and the impact on their mechanical,thermal,and magnetic properties.The paper starts with an overview of the important physical mechanisms of defect evolution and the significant gaps in simulating microstructure evolution in irradiated nuclear materials.Then,the phase field method is introduced as a powerful and predictive tool and its applications to microstructure and property evolution in irradiated nuclear materials are reviewed.The review shows that(1)Phase field models can correctly describe important phenomena such as spatial-dependent generation,migration,and recombination of defects,radiation-induced dissolution,the Soret effect,strong interfacial energy anisotropy,and elastic interaction;(2)The phase field method can qualitatively and quantitatively simulate two-dimensional and three-dimensional microstructure evolution,including radiation-induced segregation,second phase nucleation,void migration,void and gas bubble superlattice formation,interstitial loop evolution,hydrate formation,and grain growth,and(3)The Phase field method correctly predicts the relationships between microstructures and properties.The final section is dedicated to a discussion of the strengths and limitations of the phase field method,as applied to irradiation effects in nuclear materials.

关键词： properties irradiated phase

Thermoluminescence Responses of Photon and Electron irradiated Ge- and Al-Doped SiO_(2) Optical Fibres

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Chinese Physics Letters 2012年第2期29卷 208-210页

作者： H.Wagiran I.Hossain D.Bradley A.N.H.Yaakob T.Ramli Department of Physics Universiti Teknologi Malaysia81310 SkudaiJohor Darul TakzimMalaysia Department of Physics University of SurreyGuildfordGU27XHUK

We carry out a comparison of the thermoluminescence (TL) response of photon and electron irradiated Ge- and Al-doped SiO_(2) optical fibres,as well as cross-comparison with that of TLD-100.Irradiation is made with 6 MeV electrons and 6 MV photons,for doses ranging from 0.2 Gy to 4.0Gy.The commercially available Al- and Gedoped optical fibres produce a linear dose-TL response.The TL yield for both of the doped fibres and also for TLD-100 is greater for electron irradiation than for photon irradiation.The TL yield of the Al-doped fibres is a small fraction of that of Ge-doped fibres (by a factor of 25),the Ge-doped fibres offering a response of 59%o of that of TLD-100.

关键词： irradiation Electron irradiated

Preparation of Different Lights irradiated ZnSe/GSH QDs and Their Interaction with BSA

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Journal of Wuhan University of Technology(Materials Science) 2019年第4期34卷 858-865页

作者：丁玲 HE Huan 李世迁 ZHOU Jin HUANG Kuntao CHENG Zhengzai GAUTHIER Mario The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081China Coal Conversion and New Carbon Materials Hubei Key Laboratory School of Chnemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan 430081China Key Laboratory of Measurement and Control System for Offshore Environment Fuqing Branch of Fujian Normal UniversityFuqing 350300China

Using L-glutathione(GSH) as a capping agent,Zn Se/GSH quantum dots(QDs) were prepared under microwave irradiation and irradiated under dark, ultraviolet light and incandescent light, respectively. The properties and interaction of different lights irradiated ZnSe/GSH QDs and bovine serum albumin(BSA) were studied systematically. The fluorescence(FL) spectra results reveal that the quenching mechanism are all the static quenching in nature. The quenching constant(Ksv) and binding constant(K) value of different irradiated Zn Se/GSH QDs and BSA all increased with the change of light types from dark to incandescent light and UV light. The number of binding site(n) is close to 1 at different temperatures. The lighting types influence the enthalpy and entropy changes. The Fourier transform infrared(FTIR) spectra indicate that the light induced GSH ligand will facilitate photocatalytic oxidation on the surface of ZnSe/GSH QDs. The circular dichroism(CD)results show that the α-helicity content of BSA decreases from 60.34%, 59.31%, to 58.79% under UV lighting,incandescent lighting and dark conditions. The interaction results of different lights illuminated ZnSe/GSH QDs with BSA by CD spectra method matches well with that by FL and FTIR spectra. That is, the interaction of ZnSe/GSH QDs and BSA from strong to weak is UV light, incandescent light and dark in sequence.

关键词： lights irradiated ZnSe/GSH quantum dots preparation bovine serum albumin interaction thermodynamics

Defects of laser-irradiated KDP crystals with different fluences studied by photoluminescence spectroscopy

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Matter and Radiation at Extremes 2020年第3期5卷 20-24页

作者： Xiangcao Li Bao’an Liu Chunyan Yan Jie Ren Chang Liu Xin Ju Department of Physics University of Science and Technology BeijingBeijing 100083China

Photoluminescence(PL)bands from potassium dihydrogen phosphate(KDP)crystals are studied by time-resolved PL spectroscopy.KDPcrystals irradiated at a laser fluence of 11.5 J/cm^(2) are found to have the highest probability of phosphorus–oxygen hole center defects and the lowest probability of phosphorus-oxygen electric center defects,in contrast to the probabilities of these defects forKDPcrystals irradiated at 9.0 J/cm^(2).The probabilities of these two defects occurring in retired components are found to be intermediate between those for crystals irradiated at the two different fluences.The two types of defects may result fromtwo differentmechanisms and may interconvert under certain conditions.Thus,there are differences between the defects in KDP crystals irradiated at a high laser fluence and those in retired components.

关键词： laser KDP irradiated

Experiments and analysis of gold disk targets irradiated by smoothing beams of Xingguang Ⅱ facilities with 350 nm wavelength

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Science China(Physics,Mechanics & Astronomy) 2007年第6期50卷 716-730页

作者： JIANG ShaoEn,ZHANG BaoHan,LIU ShenYe,YANG JiaMin,SUN KeXu,HUANG TianXuan,DING YongKun & ZHENG ZhiJian National Key Laboratory of Laser Fusion,Laser Fusion Research Center,Mianyang 621900,China National Key Laboratory of Laser Fusion Laser Fusion Research Center Mianyang China

Gold disk targets were irradiated using focusing and beam smoothing methods on Xingguang (XG-Ⅱ) laser facilities with 350 nm wavelength,0.6 ns pulse width and 20-80 Joules energies. Laser absorption,light scattering and X-ray conversion were experimentally investigated. The experimental results showed that laser ab-sorption and scattered light were about 90% and 10%,respectively,under focusing irradiation,but the laser absorption increased 5%-10% and the scattered light about 1% under the condition of beam smoothing. Compared with the case of fo-cusing irradiation,the laser absorption was effectively improved and the scattered light remarkably dropped under uniform irradiation; then due to the decrease in laser intensity,X-ray conversion increased. This is highly advantageous to the in-ertial confinement fusion. However,X-ray conversion mechanism basically did not change and X-ray conversion efficiency under beam smoothing and focusing irra-diation was basically the same.

关键词： beam smoothing, lens array, laser absorption, scattered light, X-ray conversion Gold disk targets were irradiated using focusing and beam smoothing methods on Xingguang (XG-II) laser facilities with 350 nm wavelength, 0.6 ns pulse width and 20-80 Joules energies. Laser absorption, light scattering and X-ray conversion were experimentally investigated. The experimental results showed that laser absorption and scattered light were about 90% and 10%, respectively, under focusing irradiation, but the laser absorption increased 5%-10% and the scattered light about 1% under the condition of beam smoothing. Compared with the case of focusing irradiation, the laser absorption was effectively improved and the scattered light remarkably dropped under uniform irradiation then due to the decrease in laser intensity, X-ray conversion increased. This is highly advantageous to the inertial confinement fusion. However, X-ray conversion mechanism basically did not change and X-ray conversion efficiency under beam smoothing and focusing irradiation was basically the same.……

Differentiation of Natural and irradiated Blue Topaz by Cathodoluminescence(CL) Properties

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地学前缘 2009年第S1期16卷 169-170页

作者： Ying Song~(1,2),Xinqiang Yuan~2 1.Faculty of Earth Resources,China University of Geosciences(Wuhan),Wuhan 430074,China. 2.Gemmological Institute,China University of Geosciences(Wuhan),Wuhan 430074,China

Blue colored topaz is one of the most recognized gemstones worldwide.However,it is rarely found in the field and the products have been made mostly in laboratory using gamma,neutron and electron irradiation or combinations of these devices.Origin of the blue color in topaz remains not well understood, largely due to a lack of nondestructive way in idnetifying the blue topaz.Here we report a compari-

关键词： cathodoluminescence natural blue topaz irradiated blue topaz

Thermal Decay and Reversal of Exchange Bias Field of CoFe/PtMn Bilayer after Ga+Irradiation

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Chinese Physics Letters 2011年第5期28卷 238-241页

作者：周广宏朱雨富林岳宾 Jiangsu Provincial Key Laboratory for Interventional Medical Devices Huaiyin Institute of TechnologyHuaian 223003 Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371

An applied field is used to perform Ga^(+)ion irradiation on a CoFe/PtMn bilayer.Effects of the applied field and energy transfer between Ga^(+)ions and antiferromagnetic(AFM)atoms on the exchange bias field Hex are investigated.A partially reversed H_(ex)is found in CoFe/PtMn specimens irradiated at a dose of 1×10^(14)ions/cm^(2)with an applied field anti-parallel to the original exchange bias direction.We believe that the rapid energy transfer and local temperature increase originating from the interaction between Ga^(+)ions and AFM atoms result in spin reversal and the formation of reversed AFM domains when specimens are irradiated with anti-parallel fields.The decrease in H_(ex)when annealing the film in a negative saturation field indicates a thermal decay process.The AFM moments are reversed by thermal activation over an energy barrier distribution,which may change in some way as the temperature increases.

关键词： process reversed irradiated