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Acceleration of 60 MeV proton beams in the commissioning experiment of the SULF-10 PW laser

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High Power Laser Science and Engineering 2022年第4期10卷 36-44页

作者： A.x.Li C.Y.Qin H.zhang S.Li L.L.Fan Q.S.Wang T.J.xu N.W.Wang L.H.Yu Y.xu Y.Q.Liu C.Wang x.L.Wang Z.x.zhang x.Y.Liu P.L.bai Z.b.Gan x.b.zhang x.b.Wang C.Fan Y.J.Sun Y.H.Tang b.Yao x.Y.Liang Y.x.Leng b.F.Shen L.L.Ji R.x.Li Z.Z.xu State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Shanghai Tech University Shanghai 201210China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBejing 100049China CAS Centerfor Excellence inUltra-intense Laser Science Shanghai 201800China College of Science University of Shanghai for Science and TechnologyShanghai 200093China Department of Physics Shanghai Normal UniversityShanghai 200234China

We report the experimental results of the commissioning phase in the 10 PW laser beamline of the Shanghai Superintense Ultrafast Laser Facility(SULF).The peak power reaches 2.4 PW on target without the last amplifying during the *** laser energy of 72±9 J is directed to a focal spot of approximately 6μm diameter(full width at half maximum)in 30 fs pulse duration,yielding a focused peak intensity around 2.0×10^(21)W/cm^(2).The first laser-proton acceleration experiment is performed using plain copper and plastic ***-energy proton beams with maximum cut-off energy up to 62.5 MeV are achieved using copper foils at the optimum target thickness of 4μm via target normal sheath *** plastic targets of tens of nanometers thick,the proton cut-off energy is approximately 20 MeV,showing ring-like or flamented density *** experimental results reflect the capabilities of the SULF-10 PW beamline,for example,both ultrahigh intensity and relatively good beam *** optimization for these key parameters is underway,where peak laser intensities of 10^(22)-10^(23)w/cm^(2)are anticipated to support various experiments on extreme field physics.

关键词： high-energy proton source laser-plasma interaction ultraintense lasers

THE bAND STRUCTURE AND WORK FUNCTION OF TRANSPARENT CONDUCTING ALUMINUM AND MANGANESE CO-DOPED ZINC OxIDE FILMS

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Acta Metallurgica Sinica(English Letters) 2005年第3期18卷 356-362页

作者： H.T.Cao Z.L.Pei x.b.zhang J.Gong C.Sun L.S.Wen DivisionofSurfaceEngineeringofMaterials InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China DivisionofSurfaceEngineeringofMaterials InstituteofMetalResearchTheChineseAcademyofSciencesShenyang110016China／／ShenyangResearchCenterforInterfacialMaterialsShenyang110016China

Al and Mn co-doped-ZnO films have been prepared at room temperature by DC reacti ve magnetron sputtering technique. The optical absorption coefficient, apparent and fundamental band gap, and work function of the films have been investigated using optical spectroscopy, band structure analyses and ultraviolet photoelectro n spectroscopy (UPS). ZnO films have direct allowed transition band structure, w hich has been confirmed by the character of the optical absorption coefficient. The apparent band gap has been found directly proportional to N2/3, showing that the effect of burstein-Moss shift on the band gap variations dominates over the many-body effect. With only standard cleaning protocols, the work function of ZnO: (Al, Mn) and ZnO: Al films have been measured to be 4.26 and 4.21eV, respec tively. The incorporation of Mn element into the matrix of ZnO, as a relatively deep donor, can remove some electrons from the conduction band and deplete the d ensity of occupied states at the Fermi energy, which causes a loss in measured p hotoemission intensity and an increase in the surface work function. based on th e band gap and work function results, the energy band diagram of the ZnO: (Al, M n) film near its surface is also given.

关键词： transparent conducting oxide film band gap UPS work function

ACTIVATION OF Ab_2 TYPE Zr-bASED HYDRIDE ELECTRODES

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Acta Metallurgica Sinica(English Letters) 1998年第2期11卷 107-110页

作者： x.G.Yang K.Y.Shu x.b.zhang Y.Q.Lei Q.D.Wang W.K.zhang G.L.Lu Zhejiang Univ Hangzhou China

The effect of La alloying on the crystalline characteristics, electrochemical capacity and activity of Ab2 type Zr-Cr-Ni hydride electrodes was investigated. It was found that La alloying was able to shorten the activating process from 15 cycles of La-free alloy to 2 cycles, and that the main phase shifts from C14 to C15 by xRD analysis. It may be attributed to the modification of surface chemical states and change in internal microstructures. However, the cycling stability was also found to degrade severely for La-containing hydride electrode because of the collapse of its distorted lattice.

关键词： Zr-Cr-Ni hydrogen storage alloy La alloying electrode performance

基于时间序列CT的影像组学特征对EGFR-TKI治疗后肺腺癌的预后分析和风险分层

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国际医学放射学杂志 2023年第2期 243-244页

作者： x.b.zhang b.F.Lu x.G.Yang D.Lan S.S.Lin Z.P.Zhou 潘海燕

摘要目的评估时间序列CT影像组学特征在表皮生长因子受体-酪氨酸激酶抑制剂（EGFR-TKIs）治疗后预测肺腺癌（LUAD）病人无进展生存期（PFS）的价值。方法回顾性纳

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In situ TEM investigation of electron irradiation and aging-induced high-density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.Lv H.L.Ge Q.Q.Jin x.H.Shao Y.T.Zhou b.zhang x.L.Ma Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials Science and Engineering Research Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ electron irradiation and aging are applied to introduce high-density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve the *** results show that the hardness of the Mg alloy after irradiation for 10 h and aging for 9 h at 250℃ is 1.64 GPa,which is approximately 64% higher than that of the samples before being *** is mainly attributed to γ'precipitates on the basal plane after irradiation and the high-density nanoscale β'precipitates on the prismatic plane after aging,which should be closely related to the irradiation-induced homogenous *** latter plays a key role in precipitation *** result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitation through irradiation and aging.

关键词： Mg alloy Electron beam irradiation Hardening Precipitates In-situ TEM

Isolation and chromosomal localization of five porcine ubiquitin-specific protease genes

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Isolation and chromosomal localization of five porcine ubiqu...

Hydrogen adsorption properties of nanoporous SiC fibers

第十二次全国畜禽遗传标记研讨会

作者： x.Wu,x.b.zhang,x.M.Tang (biotechnology Research Institute,Shanghai Academy of Agricultural Sciences,2901 beidi road, Shanghai,201106,China)

Materials and Methods:The porcine DNA template was extracted from a Shanghai White *** isolate the porcine USP6 USP10,USP38,USP44 and USP54 genes,the specific primers were designed on pig EST data from NCbI using the mRNA sequences of human homology genes as probes (Genbank ***.:NM06447,NM32557,NM32557,NM32 147 and NM 52586).Pig

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Hydrogen adsorption properties of nanoporous SiC fibers

A failure criterion for brittle and quasi-brittle materials under any level of stress concentration

第九届全国氢能学术会议

作者： Z.Y.Chu,R.A.He,H.F.Cheng,x.D.Li,x.b.zhang National University of Defence Technology,China

We successfully prepared nanoporous SiC fibers from polymer precursors,with average pore diameters in the range of 1.3-1.8nm and surface areas more than 600m/*** adsorption properties of some typical synthesized fibers were studied,as compared with those of carbon nanotubes(CNTs).The results showed that the fibers with more nanopores are

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A failure criterion for brittle and quasi-brittle materials ...

Electron kinetic effects in back-stimulated Raman scattering bursts driven by broadband laser pulses

The Eighth International Conference on Fundamentals of Fracture（ICFF VIII）

作者： x.b.zhang~(a,*),J.Li~b a blaise Pascal University of ClermontⅡ,LaMI,France b University of ParisⅩⅢ,LPMTM,CNRS UPR 9001,France

In this paper,we present a new criterion to predict the crack initiation under quasi-static loads from a geometrical weakness presenting an arbitrary stress concentration in brittle or quasi-brittle *** material parameters were used in the establishment of the criterion,namely the ultimate stressσ,the critical energy release rate for crack growth G and the critical energy release rate for fracture under uniform uniaxial tension *** use of these two critical energy release rates was justified by the observation of the fracture surfaces under different stress *** proposed three parameters’ concept enables to take the different stress concentration levels into account,thus provides a unified criterion to predict crack initiation for any stress concentration,whatever it is singular or *** experimental studies were selected to verify the accuracy and efficiency of the *** was shown that the proposed criterion is physically reasonable, highly accurate and easy to *** can be used in crack initiation prediction of engineering structures made of brittle or quasi-brittle materials.

关键词： Non-singular stress concentration Fracture criteria Crack initiation PMMA brittle and quasi-brittle materials Size effect

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Matter and Radiation at Extremes 2024年第4期9卷 54-67页

作者： Q.K.Liu L.Deng Q.Wang x.zhang F.Q.Meng Y.P.Wang Y.Q.Gao H.b.Cai S.P.Zhu Graduate School China Academy of Engineering PhysicsBeijing 100088China Institute of Applied Physics and Computational Mathematics Beijing 100094China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Shanghai Institute of Laser Plasma Shanghai 201800China HEDPS Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China School of Physics Zhejiang UniversityHangzhou 310027China

We examine electron kinetic effects in broadband-laser-driven back-stimulated Raman scattering(bSRS)bursts using particle-in-cell *** bursts occur during the nonlinear stage,causing reflectivity spikes and generating large numbers of hot ***-duration simulations are performed to observe burst events,and a simplified model is developed to eliminate the interference of the broadband laser’s random intensity *** the simplified model,we isolate and characterize the spectrum of electron plasma *** spectrum changes from a sideband structure to a turbulence-like structure during the burst.A significant asymmetry in the spectrum is *** asymmetry is amplified and transferred to electron phase space by high-intensity broadband laser pulses,leading to violent vortex-merging and generation of hot *** proportion of hot electrons increases from 6.76%to 14.7%during a single violent burst *** demonstrate that kinetic effects profoundly influence the bSRS evolution driven by broadband lasers.

关键词： scattering kinetic simplified