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Chinese physics b 2024年第4期33卷 129-134页

作者：张雅芃姚嘉文刘正东马作霖仲佳勇 Department of Astronomy Beijing Normal UniversityBeijing 100875China institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China

Magnetic reconnection of the self-generated magnetic fields in laser-plasma interaction is an important laboratory method for modeling high-energy density astronomical and astrophysical *** use the Martin-Puplett interferometer(MPI)polarimeter to probe the peripheral magnetic fields generated in the common magnetic reconnection configuration,two separated coplanar plane targets,in laser-target *** introduce a new method that can obtain polarization information from the interference pattern instead of the sinusoidal function fitting of the intensity.A bidirectional magnetic field is observed from the side view,which is consistent with the magneto-hydro-dynamical(MHD)simulation results of self-generated magnetic field *** find that the cancellation of reverse magnetic fields after averaging and integration along the observing direction could reduce the magnetic field strength by one to two orders of *** indicates that imaging resolution can significantly affect the accuracy of measured magnetic field strength.

关键词： laser-plasma experiment polarimeter self-generated magnetic field magnetic reconnection

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高通量快速傅里叶叠层显微成像技术研究进展

红外与激光工程 2019年第6期48卷 170-188页

作者：潘安姚保利(指导) 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室陕西西安710119 中国科学院大学北京100049 山西大学极端光学协同创新中心山西太原030006

傅里叶叠层显微术(Fourier ptychographic microscopy,FPM)是一极具前景的计算成像技术,它具有高分辨率、大视场、无标记和定量相位等优势。由于它灵活的系统、高对比度的成像结果、无需干涉装置和光源机械扫描部件,在数字病理学、体外... 详细信息

傅里叶叠层显微术(Fourier ptychographic microscopy,FPM)是一极具前景的计算成像技术,它具有高分辨率、大视场、无标记和定量相位等优势。由于它灵活的系统、高对比度的成像结果、无需干涉装置和光源机械扫描部件,在数字病理学、体外细胞无标记观察和实时监测等方面得到了大量的研究和应用。文中主要介绍了FPM技术的系统误差校正方法、基于FPM的高通量显微成像和高速显微成像技术研究的基本原理、研究现状和最新进展,提出了目前面临的问题以及未来的发展趋势。

关键词：傅里叶叠层显微术高通量成像相位恢复计算成像

bitstream decoding and SEU-induced failure analysis in SRAM-based FPGAs

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Science China(Information Sciences) 2012年第4期55卷 971-982页

作者： WANG ZhongMing 1,2,yao Zhibin 2,GUO HongXia 2 & LV Min 1 1 Department of Engineering physics,Tsinghua University,beijing 100084,China 2 Northwest institute of Nuclear Technology,Xi'an 710024,China Department of Engineering physics Tsinghua University Beijing China Northwest institute of Nuclear Technology Xi’an China

Reconfigurable SRAM-based FPGAs are highly susceptible to radiation induced single-event upsets (SEUs) in space *** bit flip in FPGAs configuration memory may alter user circuit permanently without proper bitstream reparation,which is a completely different phenomenon from upsets in traditional memory *** is important to find the relationship between a programmable resource and corresponding control bit in order to understand the impact of this *** this paper,a method is proposed to decode the bitstream of FPGAs from Xilinx Corporation,and then an analysis program is developed to parse the netlist of a specific design to get the configuration state of occupied programmable logic and *** that,an SEU propagation rule is established according to the resource type to identify critical logic nodes and paths,which could destroy the circuit topological *** decoded relationship is stored in a *** database is queried to get the sensitive bits of a specific *** result can be used to represent the vulnerability of the system and predict the on orbit system failure *** analysis tool was validated through fault injection and accelerator irradiation experiment.

关键词： radiation effect single-event effect single-event upset SRAM-based FPGA fault injection

Experimental investigation of parallel optical data storage using pyrrylfulgide photochromic material

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Chinese Science bulletin 2003年第15期48卷 1548-1550页

作者： LEI Ming yao baoli CHEN Yi HAN Yong WANG Yingli MENKE Neimule ZHENG Yuan WANG Congmin FAN Meigong CHEN Guofu State Key Laboratory of Transient Optics Technology Xi an Institute of Optics and Precision Mechanics. Chinese Academy of Sciences Xi'an 710068China Technical institute of physics and chemistry Chinese Academy of Sciences Beijing 100101China

The optical storage characteristics of a new kind of organic photochromic material棗pyrrylfulgide were experimentally investigated in the established parallel optical data storage system. Using the pyrrylfulgide/PMMA film as a photon-mode recording medium, micro-images and encoded binary digital data were recorded, readout and erased in this parallel system. The storage density currently reaches 3?07 bit/cm2. The recorded information on the film can be kept for years in darkness at room temperature.

关键词：数据存储光致变色材料俘精酸酐环己酮

Self-Organization of PbS into Quantum Dots Superlattices

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Chinese Chemical Letters 2000年第7期11卷 627-630页

作者： Lian Zeng yao Chang Hui YE Chi Mei MO Ye ZHANG Li De ZHANG(Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026 institute of Solid State physics, Chinese Academy of Sciences, Hefei 230031) Dept. of Mat. Sci. and Engineering Univ. of Sci. and Technol. of China Hefei 230026 China institute of Solid State physics Chinese Academy of Sciences Hefei 230031 China

Self-organization of PbS into quantum dots superlattices is demonstrated for the first lime, and hexaplanar colloidal crystals 1-10 mu m in size made from PbS quantum dots 4nm in diameter are shown in Transmission Electron Microscope (TEM) micrograph, and the inner structures of the superlattices can be seen from the High Resolution Transmission Electron Microscope (HRTEM).

关键词： self-organization quantum dots PbS superlattices

HIGH-ENERGY PROTON IRRADIATION EFFECTS ON GaAs/Ge SPACE SOLAR CELLS

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 463-466页

作者： R. Wang (The Key Laboratory of beam Technology and Materials Modification of Ministry of Education, institute of Low Energy Nuclear physics, beijing Normal University beijing Radiation Center, beijing 100875, China) S.D. yao (Department of Technical Phys Inst. of Energy Nucl. Phys. Beijing Normal Univ. Beijing 100875 China

This paper reports the high-energy proton irradiation effects on GaAs/Ge space solar cells. The solar cells were irradiated by protons with energy of 5-20 MeV at fluence ranging from 1×109 to 7×1013 cm-2, and then their electric parameters were measured at AM0. It was shown that the Isc, Voc and Pmax decrease as the proton energy increasing, and the degradation is relative to proton irradiation-induced defect with a level of Ec-0.41 eV in irradiated GaAs/Ge cells.

关键词： Germanium High energy physics Irradiation Protons Semiconducting gallium arsenide

Radiation Crosslinking of Pol ysulfone-Pol ysiloxane Multiblock Copolymers

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Chemical Research in Chinese Universities 1992年第3期8卷 273-277页

作者： CHEN Xin-fang, ZHANG Chun-shan and CHUI Zhan-chen (institute of Materials Science, Jilin University, Changchun)LI bin-yao (Changchun institute of Applied chemistry, Academia Sinica, Changchun)

In this paper the effects of irradiation on the structures and properties of polysul-fone-polysiloxane multiblock copolymers and its important applied prospects are studied in detail.

关键词： Radiation-crosslinking Polysulfone Polydimethylsiloxane Multiblock copolymer

Forward modelling of the Cotton-Mouton effect polarimetry on EAST tokamak

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Plasma Science and Technology 2024年第3期26卷 100-117页

作者：沈敏勇张际波张耀揭银先刘海庆谢锦林丁卫星 School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China institute of Plasma physics Chinese Academy of SciencesHefei 230031People's Republic of China

Measurement of plasma electron density by far-infrared laser polarimetry has become a routine and indispensable tool in magnetic confinement fusion *** article presents the design of a Cotton-Mouton polarimeter interferometer,which provides a reliable density measurement without fringe ***-Mouton effect on Experimental Advanced Superconducting Tokamak(EAST)is studied by Stokes equation with three parameters(s_(1),s_(2),s_(3)).It demonstrates that under the condition of a small Cotton-Mouton effect,parameter s_(2)contains information about Cotton-Mouton effect which is proportional to the line-integrated *** a typical EAST plasma,the magnitude of Cotton-Mouton effects is less than 2πfor laser wavelength of 432μ*** effect due to density gradient is calculated to be *** modulation of Stokes parameters(s_(2),s_(3))provides heterodyne *** to the instabilities arising from laser oscillation and beam refraction in plasmas,it is necessary for the system to be insensitive to variations in the amplitude of the detection ***,it is shown that non-equal amplitude of X-mode and O-mode within a certain range only affects the DC offset of Stokes parameters(s_(2),s_(3))but does not greatly influence the phase measurements of Cotton-Mouton effects.

关键词： EAST Cotton-Mouton effect polarimeter interferometer electron density measurement Stokes vector

Constraints on axion-like particles from the observation of Galactic sources by the LHAASO

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Chinese physics C 2024年第6期48卷 232-239页

作者：李军毕效军高林青黄晓渊姚润民殷鹏飞 Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210033China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of South ChinaHengyang 421001China

High-energy photons may oscillate with axion-like particles(ALPs)when they propagate through the Milky Way's magnetic field,resulting in an alteration in the observed photon energy ***-high energy gamma-ray spectra,measured by the Large High Altitude Air Shower Observatory(LHAASO)up to O(1)PeV,provide a promising opportunity to investigate the ALP-photon oscillation *** this study,we utilize the gamma-ray spectra of four Galactic sources measured by the LHAASO,that is,the Crab Nebula,LHAASO J2226+6057,LHAASO J1908+0621,and LHAASO J1825-1326,to explore this *** employ the CLsmethod to set constraints on the ALP *** analysis of the observations of the four sources reveals that the ALPphoton coupling gaγis constrained to be smaller than 1.4×10^(-1)0GeV^(-1)for an ALP mass of~4×10^(-7)eV at 95%*** the observations of the Crab Nebula from the LHAASO and other experiments,we find that the ALP-photon coupling may be set to approximately 7.5×10^(-11)GeV^(-1)for an ALP mass of~4×10^(-7)eV,which is similar to the CAST constraint.

关键词： axion-like particles gamma-ray Galactic sources

PERIODIC SOLUTION TO PREDATOR-PREY CHAIN SYSTEM WITH IMPULSIVE EFFECTS AND bEDDINGTON-DEANGELIS FUNCTIONAL RESPONSE

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Annals of Differential Equations 2008年第3期24卷 367-378页

作者： yao Zhijian (Dept. of Math. and physics, Anhui institute of Architecture and Industry, Hefei 230601)

In this paper, a predator-prey chain system with impulsive effects and beddington-DeAngelis functional response is studied. We investigate the existence of periodic solu-tion by coincidence degree theory. Sufficient c... 详细信息

关键词： impulsive predator-prey chain system beddington-DeAngelis func-tional response periodic solution coincidence degree