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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 CenterMianyang 621900China

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

Study of transmission grating diffraction efficiencies for soft X-ray

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Nuclear Science and Techniques 1999年第2期10卷 78-82页

作者： YANG Jiamin DING Yaonan ZHENG Zhijian YI Rongqing sun kexu CUI Mingqi CUl Congwu ZHU Peiping CHEN Zhenlin LI Chaoguang WANG Yaomei Institute of Nuclear Physics and Chetnisfry CAEPChengdu 610003 Beijing institute of High Energy Physics the Chinese Academy of Sciences.Beijing 100039

Tansmission grating spectrometers are extensively used to measure absthlute X-ray spectra in a photon-energy range below 1000 eV. The transmission grating,as its dispersive element, must be calibrated to obtain its danaction efficiencies. Calibrations of absolute distraction efficiencies of the tlansmission grating at photon energyof 844eV have been carried out on Beliing Synchrotron mediation Facility. With theaid of grating model, all of the grating structure paraxneters have been determinedand the absolute dchaction efficiencies in a photon-energy range below 2000eV havealso been calculated and discussed.

关键词：同步加器辐射衍射效率软X射线

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利用节点增强方法分析作弊度的研究

信息技术与信息化 2023年第2期 73-76页

作者：孙克旭沈阳理工大学信息科学与工程学院辽宁沈阳110159

针对大量出现的网络虚假评论“水军”的问题,提出一种基于无监督的节点增强迭代算法,首先,建立基于虚假评论的数据集的时间和评论内容以及打分的相似程度定义相似函数,分别有打分相似性,时间相似性和文本相似性,并确定相似度的集合,使... 详细信息

针对大量出现的网络虚假评论“水军”的问题,提出一种基于无监督的节点增强迭代算法,首先,建立基于虚假评论的数据集的时间和评论内容以及打分的相似程度定义相似函数,分别有打分相似性,时间相似性和文本相似性,并确定相似度的集合,使具有相似性的评论都放到相同的集合中,然后,通过设定好的相似性计算公式去计算出具有高相似的评论之间的具体相似值,并建立相似度函数矩阵,在相似函数矩阵中,行列值为评论信息,矩阵中的值为两两评论之间的具体相似度,构建图向量,最后,通过建立初始矩阵与相似矩阵进行迭代的计算,最终获得最终的作弊度大小,通过迭代,在达到设定的迭代值后结束实验。试验结果表明,在无监督的在线迭代下,召回率,准确率,精确率和F1-scorre都获得了较高的数值,在最后得到的实验结果下,通过数据可视化以及和其他实验的对比,获得到了优秀的数据指标。

关键词：虚假评论检测节点增强无监督图向量

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金阴极微通道板探测器X射线段的能谱响应

强激光与粒子束 2011年第3期23卷 787-790页

作者：袁铮陈韬曹柱荣孙可煦易荣清刘慎业中国工程物理研究院激光聚变研究中心四川绵阳621900

利用表面镀金阴极膜的微通道板（MCP）构成一种金阴极MCP光电探测器,根据MCP的电阻电容特性提出了一种特殊的能谱响应测量方法。在北京同步辐射3B3中能束线上对该探测器在2.1~6.0keV能段的谱响应进行了实验标定。以美国NIST绝对定标的美... 详细信息

利用表面镀金阴极膜的微通道板（MCP）构成一种金阴极MCP光电探测器,根据MCP的电阻电容特性提出了一种特殊的能谱响应测量方法。在北京同步辐射3B3中能束线上对该探测器在2.1~6.0keV能段的谱响应进行了实验标定。以美国NIST绝对定标的美国IRD公司生产的AXUV-100硅光二极管为次级标准探测器,标定金膜厚度分别为25和100 nm的金阴极MCP探测器的能谱响应。经分析发现,阴极材料和MCP材料的元素吸收边是造成量子效率曲线出现突变点的原因。对比两种MCP的能谱响应标定结果,金膜厚度为100 nm探测器的能谱响应高于金膜厚度为25 nm的探测器。

关键词：微通道板金阴极能谱响应同步辐射

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高性能X光二极管的研制

强激光与粒子束 2011年第3期23卷 652-656页

作者：侯立飞杨国洪刘慎业韦敏习易涛江少恩孙可煦中国工程物理研究院激光聚变研究中心四川绵阳621900

作为X光测量的重要器件,X光二极管的研究和改进工作一直颇受重视。通过对储能系统和输出系统的重点研究与优化设计,研制出了新型超快响应X光二极管(XRD-Ⅱ),并在8 ps短脉冲激光装置上对探测器的性能进行了研究。实验结果表明:XRD-Ⅱ的... 详细信息

作为X光测量的重要器件,X光二极管的研究和改进工作一直颇受重视。通过对储能系统和输出系统的重点研究与优化设计,研制出了新型超快响应X光二极管(XRD-Ⅱ),并在8 ps短脉冲激光装置上对探测器的性能进行了研究。实验结果表明:XRD-Ⅱ的阻抗匹配特性得到提高,耐压能力达6 kV,上升时间达40 ps,半高全宽达80 ps。标定实验给出的灵敏度结果也说明其灵敏度得到了保证。超快响应X光二极管的成功研制可大大提高X光诊断的时间分辨力,为实现精密定量诊断提供有利条件。

关键词： X光二极管响应时间阻抗匹配上升时间半高全宽

In situ polymerization of poly(3,4-ethylenedioxythiophene)protective layer towards stable zinc anode

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Nano Research 2025年第1期18卷 382-394页

作者： Debin Luo Peng Zhou Xiaowei Lv Panpan sun Xiaohua sun Hewei Zhao College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Hubei Three Gorges Laboratory Yichang 443007China School of Chemistry Beihang UniversityBeijing 100191China

Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy ***,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion ***,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of *** and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side ***,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 ***-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc ***,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.

关键词： zinc-ion devices zinc anode poly(3 4-ethylenedioxythiophene)(PEDOT) dendrite desolvation process

Experimental investigation of supersonic radiation propagation in low-density plastic and copper-doped foams

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Science China(Physics,Mechanics & Astronomy) 2005年第5期48卷 549-558页

作者： JIANG Shaoen1, XU Yan2, DING Yongkun1, LAI Dongxian2, ZHENG Zhijian1, HUANG Yixiang1, LI Jinghong2, sun kexu1, HU Xin1, ZHANG Wenhai1, YI Rongqing1, CUI Yanli1 & CHEN Jiusen1 1. National Key Laboratory of Laser Fusion, Laser Fusion Research Center, Mianyang 621900, China 2. Institute of Applied Physics and Computation Mathematics, Beijing, 100088, China 1. National Key Laboratory of Laser Fusion Laser Fusion Research Center 621900 Mianyang China 2. Institute of Applied Physics and Computation Mathematics 100088 Beijing China

Eight beams of 0.35 μm laser with pulse duration of 1 ns and total energy of 2 kJ enter into a hohlraum to create intense X-ray radiation of 140 eV on the Shenguang ΙΙ laser facility. Plastic foam (C6H12) and copper-doped foam (C6H12Cu0.394) with a density of 50 mg/cm3 are heated by X-ray radiation emitted from the hohlraum. The breakout time of the radiation wave is measured by a tri-chromatic streaked X-ray spectrometer (TCS) that consists of a set of three imaging pinholes and an array of three transmission gratings coupled with an X-ray streak camera (XSC). At one shot, the simultaneous measurements of the delay of the drive source and the radiation transport at two energies (210 eV, 840 eV) through the foam have been made for the first time. The experimental results indicate that the time delays vary with photon energies. With a transmission grating spectrometer (TGS), the spectra transmitting foams were measured, and the lower limit of the optical depth was measured. The radiation at energy of 210 eV propagates through plastic foam at a faster velocity, compared with the radiation at energy of 840 eV; while the results of copper-doped foam are reverse. The optical depth in the plastic foam is less than 1, and in the doped foam it is more than 1.

关键词： supersonic radiation wave, plastic foam, copper-doped foam, optical depth.

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用于激光等离子体能量测定的差分量热计

核聚变与等离子体物理 1984年第2期 97-101页

作者：江文勉凌球孙可煦

本文叙述了一种用于激光打靶等离子体能量测定的补偿型双圆片差分量热计的设计、结构、成形、效率的绝对刻度及其性能;对低能离子在吸收体上的溅射系数作了定量计算;同时简要地列举了激光打靶测量中的一些结果。所设计的差分量热计测量... 详细信息

本文叙述了一种用于激光打靶等离子体能量测定的补偿型双圆片差分量热计的设计、结构、成形、效率的绝对刻度及其性能;对低能离子在吸收体上的溅射系数作了定量计算;同时简要地列举了激光打靶测量中的一些结果。所设计的差分量热计测量误差为±6％。

关键词：量热计测量误差圆片成形补偿型卡计吸收体等离子体

Brain endothelial cyclic GMP-AMP synthase(cGAS)-stimulator of interferon genes(STING)signaling pathway in aging and neurodegeneration

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Neural Regeneration Research 2025年第7期20卷 2005-2007页

作者： Bryan sun Lulin Li Jian Luo Palo Alto Veterans Institute for Research VA Palo Alto Health Care SystemPalo AltoCAUSA Polytrauma System of Care VA Palo Alto Health Care SystemPalo AltoCAUSA

The cyclic GMP-AMP synthase(cGAS)-stimulator of interferon genes(STING)signaling pathway has emerged as a key mediator of *** current studies primarily attribute its effects to neurons and glial cells,emerging research suggests that cGAS-STING signaling may play a critical role in cerebral vasculature,particularly in brain endothelial ***,studying the role 7of inflammation caused by the cGAS-STING pathway in brain endothelial cells could provide a more comprehensive understanding of neuroinflammatory disease and new avenues for therapeutic ***,we review the multifaceted role of global cGAS-STING signaling in various neurological and neuroinflammatory diseases and the potential contribution of cGAS-STING in brain endothelial cells.

关键词： stimulator interferon inflammation

Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo Yu Zhenyu sun Weichen Zheng Liangwei Zhang Yanling Xue Wenning Liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment