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A New Hypothesis on the Dark Matter 被引量:1
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作者 A. Bianchi G. Guido 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第2期572-594,共23页
In this paper, using the AGM model (Aureum Geometric Model), where geometric structures of coupled quantum oscillators represent particles, we formulate a new hypothesis about the origin of the Dark Matter (DM). Highl... In this paper, using the AGM model (Aureum Geometric Model), where geometric structures of coupled quantum oscillators represent particles, we formulate a new hypothesis about the origin of the Dark Matter (DM). Highlighting its hadronic nature, we identify the representative particle’s particular geometric structure, the “dark pion”, and calculate its mass. Finally, we propose an experiment for the detection of this particle. 展开更多
关键词 QUARK dark Matter Structure Equation Geometric Structure Golden Number INTERPENETRATION IQuO GLUON PION dark Pion dark proton
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Effects of high-energy proton irradiation on separate absorption and multiplication GaN avalanche photodiode 被引量:3
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作者 Gui-Peng Liu Xin Wang +3 位作者 Meng-Nan Li Zheng-Peng Pang Yong-Hui Tian Jian-Hong Yang 《Nuclear Science and Techniques》 SCIE CAS CSCD 2018年第10期155-162,共8页
The effect of high-energy proton irradiation on GaN-based ultraviolet avalanche photodiodes(APDs) is investigated. The dark current of the GaN APD is calculated as a function of the proton energy and proton fluences. ... The effect of high-energy proton irradiation on GaN-based ultraviolet avalanche photodiodes(APDs) is investigated. The dark current of the GaN APD is calculated as a function of the proton energy and proton fluences. By considering the diffusion, generation–recombination, local hopping conductivity, band-to-band tunneling, and trap-assisted tunneling currents, we found that the dark current increases as the proton fluence increases, but decreases with increasing proton energy. 展开更多
关键词 proton irradiation GAN AVALANCHE photodiode(APD) dark current Detectors
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Ground State Nucleon, Dark Energy and Dark Matter
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作者 Gintautas P. Kamuntavičius 《Journal of Applied Mathematics and Physics》 2016年第4期711-719,共9页
The recently introduced model of the nucleon as a system of three point particles predicts all characteristics of the proton and neutron with experimental precision only at condition that nucleon is the loosely bound ... The recently introduced model of the nucleon as a system of three point particles predicts all characteristics of the proton and neutron with experimental precision only at condition that nucleon is the loosely bound state in system of deep potential wells. The model’s Hamiltonian contains ground state with the same parity and spin as the nucleon but with other different characteristics. Existence of this ground state nucleon means that the visible Universe is composed of excited matter. The direct transition between excited and ground states is strictly forbidden, however, stimulated emission can ignite such process. Most likely, corresponding conditions realize at supernova explosion. It is shown that presence of this matter, composed of ground state nucleons, in Universe gives the chance for consistent explanation of dark matter and dark energy phenomena. 展开更多
关键词 Solutions of Wave Equations (Bound States) Potential Models proton and Neutron dark Matter dark Energy
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Dark Matter Creation and Anti-Gravity Acceleration of the Expanding Universe 被引量:1
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作者 F. C. Hoh 《Journal of Modern Physics》 2021年第3期139-160,共22页
Dark matter is identified as negative relative energy between quarks in proton and is generated in cold hydrogen gas with pressure gradient in gravitational field. Positive relative energy PRE can be generated between... Dark matter is identified as negative relative energy between quarks in proton and is generated in cold hydrogen gas with pressure gradient in gravitational field. Positive relative energy PRE can be generated between quarks in protons in cold hydrogen gas in outskirts of the universe. The mechanisms for such creation of dark matter and PRE are reviewed and updated in greater detail and clearer manner. The so-generated dark matter in a galaxy can account for the galaxy’s rotation curve. Star formation in this galaxy uses up the hydrogen atoms and thereby reduces its dark matter content. Dark matter created in intergalactic hydrogen gas can form filaments. In a hypothetical model of the universe, a hydrogen atom with a small amount of negative relative energy or dark matter at the outskirts of this universe can via collisions with other atoms turn into one with a small positive relative energy PRE. Once such a sign change takes place, gravitational attraction switches to anti-gravity repulsion unopposed by any pressure gradient. This leads to a “run away” hydrogen atom moving away from the mass center of the universe and provides a basic mechanism for the accelerating expansion of the universe. This theoretical expansion and the measured redshift data are both compatible with the conception of an acceleratingly expanding universe and complement each other. But they cannot verify each other directly because the present model has been constructed for purposes different from those of the measurements. But it can be shown that both approaches do support each other qualitatively under certain circumstances for small velocities. Dark matter and PRE in the present model are not foreign objects like WIMPs and dark energy-cosmological constant but can only be created in cold hydrogen gas in gravitational field. To achieve this, infrequent collisions among the hydrogen atoms must take place. Dark matter was created first and can eventually later evolve into PRE in the outskirts of the universe and in the intergalactic void. Dark matter and PRE will disappear if the hydrogen atom carrying them becomes ionized as in stars. 展开更多
关键词 Relative Energy between Quarks Scalar Strong Interaction Hadron Theory SSI Negative Relative Energy dark Matter Positive Relative Energy PRE Anti-Gravity Repulsion Universe Expansion proton Orbit Hubble’s Law
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On the Ratios Dark Matter (Energy)/Ordinary Matter ≈5.4(13.6) in the Universe
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作者 F. C. Hoh 《Journal of Modern Physics》 2020年第7期967-975,共9页
An upper limit of the average ratio dark matter/ordinary matter in galaxies is estimated to be 8.4, in agreement with the observed ratio 5.4. Upper limit of the average ratio dark energy/ordinary matter for slowly mov... An upper limit of the average ratio dark matter/ordinary matter in galaxies is estimated to be 8.4, in agreement with the observed ratio 5.4. Upper limit of the average ratio dark energy/ordinary matter for slowly moving protons in the outer parts of the universe is estimated to be 8.4, much less than the observed ratio 13.6. The discrepancy is tentatively attributed to that the bulk of the protons in these outer parts of the universe moves fastly and their contribution to dark energy has not been estimated. The positive and negative relative energies between the diquark and quark in the proton play the roles of dark energy and dark matter, respectively. 展开更多
关键词 Relative Energy Between Quarks Scalar Strong Interaction Hadron Theory Ratio of dark Matter to Ordinary Matter Ratio of dark Energy to Ordinary Matter Gravitational Pull of Diquark and Quark proton Orbit Diquark Equations
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Mass of the Universe from Quarks: A Plausible Solution to the Cosmological Constant Problem
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作者 Kevin Oramah 《Journal of Modern Physics》 2023年第12期1672-1692,共21页
A framework to estimate the mass of the universe from quarks is presented, taking spacetime into account. This is a link currently missing in our understanding of physics/science. The focus on mass-energy balance is a... A framework to estimate the mass of the universe from quarks is presented, taking spacetime into account. This is a link currently missing in our understanding of physics/science. The focus on mass-energy balance is aimed at finding a solution to the Cosmological Constant (CC) problem by attempting to quantize space-time and linking the vacuum energy density at the beginning of the universe and the current energy density. The CC problem is the famous disagreement of approximately 120 orders of magnitude between the theoretical energy density at the Planck scale and the indirectly measured cosmological energy density. Same framework is also used to determine the mass of the proton and neutron from first principles. The only input is the up quark (u-quark) mass, or precisely, the 1st generation quarks. The method assumes that the u-quark is twice as massive as the down-quark (d-quark). The gap equation is the starting point, introduced in its simplest form. The main idea is to assume that all the particles and fields in the unit universe are divided into quarks and everything else. Everything else means all fields and forces present in the universe. It is assumed that everything else can be “quark-quantized”;that is, assume that they can be quantized into similar sizeable u-quarks and/or it’s associated interactions and relations. The result is surprisingly almost as measured and known values. The proton structure and mass composition are also analysed, showing that it likely has more than 3 quarks and more than 3 valence quarks. It is also possible to estimate the percentage of dark matter, dark energy, ordinary matter, and anti-matter. Finally, the cosmological constant problem or puzzle is resolved by connecting the vacuum energy density of Quantum Field Theory (5.1E+96 kg/m<sup>3</sup>) and the energy density of General Relativity (1.04E−26 kg/m<sup>3</sup>). Upon maturation, this framework can serve as a bridging platform between Quantum Field Theory and General Relativity. Other aspects of natures’ field theories can be successfully ported to the platform. It also increases the chances of solving some of the unanswered questions in physics. 展开更多
关键词 Cosmological Constant proton Mass-Structure Quark-Quantization dark Matter dark Energy Age of the Universe Energy Density Spacetime Quantization
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辐射环境下CMOS图像传感器的暗电流幅值分布预测方法 被引量:1
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作者 郑然 刘超 +1 位作者 刘晗 惠祥力 《微电子学与计算机》 CSCD 北大核心 2018年第4期144-148,共5页
在空间卫星系统中,CMOS图像传感器也成为了首选的成像器件.然而,空间中存在的各种辐射粒子所引起的辐射效应,会使CMOS图像传感器暗电流均值增加、不一致性增强,导致图像信噪比降低,影响成像质量.基于半导体器件的辐射效应原理,分析了γ... 在空间卫星系统中,CMOS图像传感器也成为了首选的成像器件.然而,空间中存在的各种辐射粒子所引起的辐射效应,会使CMOS图像传感器暗电流均值增加、不一致性增强,导致图像信噪比降低,影响成像质量.基于半导体器件的辐射效应原理,分析了γ射线和质子辐射对CMOS图像传感器的总剂量和位移损伤效应,提出了一种混合辐射环境下暗电流分布建模方法.仿真结果表明,提出的方法能够准确预测γ射线和质子混合辐射环境下CMOS图像传感器的暗电流幅值分布情况. 展开更多
关键词 暗电流幅值分布 预测 质子 Γ射线 辐射环境
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CMOS APS质子辐照效应实验
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作者 李永宏 李洋 +7 位作者 杨业 刘方 王迪 赵铭彤 刘昌举 赵浩昱 贺朝会 徐江涛 《现代应用物理》 2021年第3期140-144,共5页
利用西安200 MeV质子应用装置进行了互补金属氧化物半导体有源像素图像传感器(CMOS APS)的质子辐照效应研究。设计了便携式暗室,解决了图像传感器质子辐照效应难以在线测量问题。实验结果表明,质子辐照在CMOS APS中产生的暗电流随质子... 利用西安200 MeV质子应用装置进行了互补金属氧化物半导体有源像素图像传感器(CMOS APS)的质子辐照效应研究。设计了便携式暗室,解决了图像传感器质子辐照效应难以在线测量问题。实验结果表明,质子辐照在CMOS APS中产生的暗电流随质子注量呈线性增长;当质子注量小于5×10^(12)cm^(-2)时,CMOS APS暗信号的非均匀性、光响应的非均匀性和不同光场强度下的平均输出值等参数的变化趋势不明显;当质子注量大于5×10^(12)cm^(-2)时,这些参数会产生不同程度的增加。 展开更多
关键词 CMOS APS 质子辐照效应 暗信号 光响应非均匀性
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CMOS图像传感器在质子辐照下热像素的产生和变化规律 被引量:2
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作者 王田珲 李豫东 +5 位作者 文林 冯婕 蔡毓龙 马林东 张翔 郭旗 《发光学报》 EI CAS CSCD 北大核心 2018年第12期1697-1704,共8页
应用于空间的图像传感器在辐射影响下产生的热像素严重影响空间光电探测性能,本文通过质子辐照试验研究了热像素的产生和变化规律。首先,使用3MeV和10MeV两种能量的质子对图像传感器进行辐照,分析不同能量、不同注量的质子辐照产生热像... 应用于空间的图像传感器在辐射影响下产生的热像素严重影响空间光电探测性能,本文通过质子辐照试验研究了热像素的产生和变化规律。首先,使用3MeV和10MeV两种能量的质子对图像传感器进行辐照,分析不同能量、不同注量的质子辐照产生热像素的性质;其次,再对辐照后的器件进行退火试验,分析热像素的退火规律。对于相同注量辐照,3MeV质子辐照下热像素产生率大约是10MeV质子辐照下的2.3倍,但是10MeV质子辐照产生热像素的灰度值高于3MeV质子;辐照过程中热像素的数量都是随着注量的增加线性增加。退火过程中,热像素数量都不断减少,而3MeV质子辐照产生的热像素相比于10MeV质子,退火更为显著。结果表明,质子辐照下每个质子与器件之间的作用过程及产生缺陷的机制是相对独立的,不同质子的作用过程之间没有相关性。不同能量的质子辐照产生缺陷的类型不同,导致热像素具有不同特性。 展开更多
关键词 CMOS图像传感器 热像素 质子辐照 位移损伤 暗信号
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美因茨电子回旋加速器MAMI和MESA上的精细强子物理(英文)
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作者 DENIG Achim 《中国科学技术大学学报》 CAS CSCD 北大核心 2016年第7期608-616,共9页
美因茨电子回旋加速器MAMI是用于强子和低能粒子物理领域固定靶实验的高流强电子加速器.它提供了能量高达1.6Ge V的极化束流.目前MAMI上两个主要的装置正在安装:高分辨谱仪A1和由晶体球探测器连同TAPS量能器组成的探测器A2.在MAMI上研... 美因茨电子回旋加速器MAMI是用于强子和低能粒子物理领域固定靶实验的高流强电子加速器.它提供了能量高达1.6Ge V的极化束流.目前MAMI上两个主要的装置正在安装:高分辨谱仪A1和由晶体球探测器连同TAPS量能器组成的探测器A2.在MAMI上研究规划的亮点是:测量质子的电磁形状因子和极化度,这会涉及质子半径困惑;η介子的跃迁形状因子和斜率参数的测量;以及寻找假想的暗物质规范玻色子即暗光子.目前,美因茨的新电子加速器MESA正在准备之中,它将允许低动量传递下电弱混合角的精确测量及核、强子和粒子物理中各种低能电子-核子/原子核散射的测量. 展开更多
关键词 强子物理 电子散射 电磁形状因子 极化度 介子衰变 质子半径 电弱混合角 暗光子
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New Exotic Models of Cold Nuclear Reactions and the Creation of the World
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作者 Andrey B. Simakov 《Journal of High Energy Physics, Gravitation and Cosmology》 2018年第3期504-509,共6页
The work has the characters of a philosophical note, in which a new exotic version of the atom structure is discussed. According to this, the atomic nucleus consists of “normal” and “special” neutrons. Electrons a... The work has the characters of a philosophical note, in which a new exotic version of the atom structure is discussed. According to this, the atomic nucleus consists of “normal” and “special” neutrons. Electrons are internal part of both types of neutron. Electrons can leave “normal” neutrons of the nucleus and return back with a certain probability. These processes lead to the appearance of protons in the nucleus and form the electron orbits of the atom. At the same time, it is possible that the Coulomb’s barriers of atoms and nucleus disappear at some point in time and cold nuclear reactions pass through. This assumption leads to a new exotic model of the Universe structure, namely, the existence of neutron ether, consisting of special neutrons that do not emit their own electrons. In this ethereal ocean of special neutrons, periodically provoked disturbances arise. After that, it creates pockets, clusters of our normal neutrons inherent in our world, which can already emit electrons and, consequently, create atoms. The ether gets sick from time to time. However, as a result of this disease, stars arise. Some possible stages in the creation of our world are also discussed in this paper. 展开更多
关键词 Low Energy Nuclear Reaction COULOMB Barrier NEUTRON proton Electron VACANCY NEUTRON ETHER dark Matter
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教学中海洋化学一类离子聚变引起的深思
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作者 杨成瑞 王丽娟 《中国科教创新导刊》 2009年第30期54-55,共2页
地球大气的物理变化与海洋的物理化学变化是相互关联的。大气中氢离子的失衡导致氢氧根离子、氯离子等一类的极大饱和,使海洋中的盐碱浓度增大,从而致使海洋中某些生物(例如恐龙)无法生存最后灭绝。这也是引起地球温室效应的一个很重... 地球大气的物理变化与海洋的物理化学变化是相互关联的。大气中氢离子的失衡导致氢氧根离子、氯离子等一类的极大饱和,使海洋中的盐碱浓度增大,从而致使海洋中某些生物(例如恐龙)无法生存最后灭绝。这也是引起地球温室效应的一个很重要原因,特别是太阳的剧烈活动是地球变暖的根本所在。 展开更多
关键词 恐龙 海洋 H+ OH- CI- 质子 氨基酸 饱和 太阳系 暗物质 张裂运动 沙漠化
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Nuclear Physics with Magnetic Charges 被引量:1
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作者 Robert A. Sizov 《Journal of Modern Physics》 2018年第2期145-171,共27页
The magnetic spinor particles (magnetic charges) are the real structural components all varieties of the Mass, for example, atoms, nucleons, positrons and neutrinos. Atomic-shaped device of Mass is the natural and the... The magnetic spinor particles (magnetic charges) are the real structural components all varieties of the Mass, for example, atoms, nucleons, positrons and neutrinos. Atomic-shaped device of Mass is the natural and the only possible organization of electric and magnetic charges which can create a gravitational field. At level of a popular language one can define nucleons as “small atoms”, and positron and neutrino as “very small atoms”. The electric and magnetic fundamental particles in neutron and proton shells which by tradition should be called quarks have charges of smaller magnitude than the charges of particles in atomic shells. Positron which participates in the gravitational interaction and, consequently, has an atomic-shaped device is the most likely candidate for the role of the proton nucleus. The most likely candidate particles on the participation in nuclei of proton and neutron as well as in nuclei of the positron and neutrino are presented in the article. So-called abnormal magnetic moment of neutron is formed by the quark magnetic dipoles which are like to unpaired electrons in the so-called magnetic atoms rotate on the outer orbitals of the neutron shell. The participation of the “magnetic electron” (magneton) in the neutrino core assumes the existence of the so-called anomalous magnetic moment and in the neutrino shell. The existence of real magnetic charges in the structures of the Mass draws our attention on such important problem as interaction between charges in the framework of electromagnetic dipoles such as and in which manifest the weak attraction. Weak interaction by its nature is electromagnetic. So-called electromagnetic interaction, manifested in pairs of homogeneous charges of opposite signs, is either electric or magnetic, but not electromagnetic. The explanation of the weak interaction in the marked pairs of charges is based on the author’s concept of the World Physical Triad and “Dark Energy”. Forces responsible for the interaction of the charges composing the electromagnetic dipoles correspond, conditionally of the weak charges of the particles which what assume mutual suppression of the influence of their fields on the Energo-medium and the formation of the weak “Dark energy”. Complex of magnetic particles, the quark magnetic dipoles and magneton by means of which the interconversion of a proton and a neutron is realized and maintained their constant number in the atomic nuclei can be called as magnetic meson. Namely, a processes of interconversion between a neutron and a proton which, as a rule, are not accompanied by secretions, created the illusion of neutron stability in atomic nuclei. The energy created by an exchange of magnetic mesons between neutron and proton can be a component of nuclear forces (strong interaction). Another effective and, most likely, the main component in the composition of the nuclear forces is the gravitational “Dark Energy”. Physics and structure of neutrinos presented in the paper suggest that the nature of these particles closer to the ideology of E. Majorana than P. Dirac’s. 展开更多
关键词 Magnetic and Electric CHARGES Antielectrons Magnetons Antimagnetons Bispinor Physical Mass Vortex Electromagnetic (Gravitational) Field QUARKS protonS Neutrons Positrons NEUTRINO MESONS Weak and Strong Interactions dark Energy”
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不同偏置条件下CMOS图像传感器质子辐照损伤效应的实验与分析
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作者 聂栩 王祖军 +8 位作者 王百川 薛院院 黄港 赖善坤 唐宁 王茂成 赵铭彤 杨馥羽 王忠明 《光学学报》 EI CAS CSCD 北大核心 2023年第19期280-288,共9页
应用在空间辐射环境下的互补金属氧化物半导体图像传感器(CIS)会受到高能质子辐照损伤,导致性能退化,严重时甚至功能失效。为了分析CIS高能质子辐照损伤机理,本文以0.18μm工艺CIS为研究对象,利用西安200 MeV质子应用装置开展了注量分别... 应用在空间辐射环境下的互补金属氧化物半导体图像传感器(CIS)会受到高能质子辐照损伤,导致性能退化,严重时甚至功能失效。为了分析CIS高能质子辐照损伤机理,本文以0.18μm工艺CIS为研究对象,利用西安200 MeV质子应用装置开展了注量分别为1×10^(10)、5×10^(10)、1×10^(11)p/cm^(2)的100 MeV质子辐照实验。获得了单粒子瞬态响应的典型特征和暗信号、暗信号分布、暗信号尖峰及随机电码信号(RTS)等敏感参数的退化规律,揭示了不同偏置条件和不同注量下CIS高能质子辐照损伤的物理机制。实验结果表明:对暗信号而言,加偏置条件比未加偏置条件变化显著;质子辐照诱发的位移损伤和电离损伤引起暗信号的增大;位移损伤诱发的体缺陷诱发暗信号尖峰的产生,且随着辐照注量的增大而增多;空间电荷区中不同类型的体缺陷导致两能级和多能级RTS的产生。 展开更多
关键词 遥感与传感器 CMOS图像传感器 质子辐照 瞬态响应 暗信号 随机电码信号
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不同能量质子辐照诱发CCD图像传感器性能退化实验与分析
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作者 黄港 王祖军 +7 位作者 吕伟 聂栩 赖善坤 晏石兴 王敏文 卓鑫 于俊英 王忠明 《光学学报》 EI CAS CSCD 北大核心 2023年第11期193-200,共8页
为了评估电荷耦合器件(CCD)在空间科学探测以及航天卫星成像等空间辐射环境中应用的可靠性,揭示了CCD转换增益以及线性饱和输出等重要性能参数的退化机制及其实验规律。辐照实验在质子回旋加速器上进行,质子能量为60 MeV和100 MeV,质子... 为了评估电荷耦合器件(CCD)在空间科学探测以及航天卫星成像等空间辐射环境中应用的可靠性,揭示了CCD转换增益以及线性饱和输出等重要性能参数的退化机制及其实验规律。辐照实验在质子回旋加速器上进行,质子能量为60 MeV和100 MeV,质子注量分别为1×10^(10)cm^(-2)、5×10^(10)cm^(-2)和1×10^(11)cm^(-2)。将CCD的主要性能参数在两个不同能量质子辐照后进行比较,实验结果表明,CCD的性能参数对质子辐照产生的电离损伤和位移损伤非常敏感,辐照后转换增益和线性饱和输出明显下降,且暗信号尖峰和暗电流明显增大。此外,分析了质子辐照CCD诱发的电离损伤和位移损伤,给出了CCD性能参数退化与质子辐照能量和注量的变化关系曲线。 展开更多
关键词 光学器件 电荷耦合器件 质子辐照 转换增益 线性饱和输出 暗信号尖峰
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质子辐射下互补金属氧化物半导体有源像素传感器暗信号退化机理研究 被引量:6
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作者 汪波 李豫东 +5 位作者 郭旗 刘昌举 文林 任迪远 曾骏哲 玛丽娅 《物理学报》 SCIE EI CAS CSCD 北大核心 2015年第8期189-195,共7页
对某国产0.5μm工艺制造的互补金属氧化物半导体有源像素传感器进行了10 Me V质子辐射试验,当辐射注量达到预定注量点时,采用离线的测试方法,定量测试了器件暗信号的变化情况.试验结果表明,随着辐射注量的增加暗信号迅速增大.采用MULASS... 对某国产0.5μm工艺制造的互补金属氧化物半导体有源像素传感器进行了10 Me V质子辐射试验,当辐射注量达到预定注量点时,采用离线的测试方法,定量测试了器件暗信号的变化情况.试验结果表明,随着辐射注量的增加暗信号迅速增大.采用MULASSIS(multi-layered shielding simulation software)软件计算了电离损伤剂量和位移损伤剂量,在与γ辐射试验数据对比的基础上,结合器件结构和工艺参数,建立了分离质子辐射引起的电离效应和位移效应理论模型,深入分析了器件暗信号的退化机理.研究结果表明,对该国产器件而言,电离效应导致的表面暗信号和位移效应导致的体暗信号对整个器件暗信号退化的贡献大致相当. 展开更多
关键词 互补金属氧化物半导体有源像素传感器 暗信号 质子辐射 位移效应
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质子辐照CCD诱发暗信号增大 被引量:3
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作者 王祖军 刘以农 +5 位作者 陈伟 唐本奇 肖志刚 刘敏波 黄绍艳 张勇 《清华大学学报(自然科学版)》 EI CAS CSCD 北大核心 2010年第9期1484-1488,共5页
质子辐照诱发电荷耦合器件(CCD)中的暗信号。建立了质子辐照电离损伤的辐射效应模型,通过应用半导体器件仿真软件MEDICI进行数值模拟计算,得出了质子辐照电离损伤诱发CCD表面暗信号随辐照注量增大的变化规律;建立了质子辐照位移损伤的... 质子辐照诱发电荷耦合器件(CCD)中的暗信号。建立了质子辐照电离损伤的辐射效应模型,通过应用半导体器件仿真软件MEDICI进行数值模拟计算,得出了质子辐照电离损伤诱发CCD表面暗信号随辐照注量增大的变化规律;建立了质子辐照位移损伤的辐射效应模型,数值模拟计算了质子辐照位移损伤诱发体缺陷导致CCD体暗信号增大的变化规律。综合比较了质子辐照损伤诱发增大的CCD表面暗信号、体暗信号和总的暗信号随质子辐照注量的变化规律。数值模拟计算结果与国外相关实验得出的规律相吻合。 展开更多
关键词 电荷耦合器件(CCD) 质子 暗信号 电离损伤 位移损伤 数值模拟
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质子辐射损伤对单结GaAs/Ge太阳电池暗特性参数的影响 被引量:2
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作者 岳龙 吴宜勇 +4 位作者 张延清 胡建民 孙承月 郝明明 兰慕杰 《物理学报》 SCIE EI CAS CSCD 北大核心 2014年第18期438-444,共7页
基于p-n结暗特性双指数模型,对经质子辐射后的单结GaAs/Ge太阳电池的暗特性I-V曲线进行数值拟合,确定了单结GaAs/Ge太阳电池在辐射前后的四个暗特性特征参数,即串联电阻R_s、并联电阻R_(sh)、扩散电流I_(s1)和复合电流I_(s2).研究结果表... 基于p-n结暗特性双指数模型,对经质子辐射后的单结GaAs/Ge太阳电池的暗特性I-V曲线进行数值拟合,确定了单结GaAs/Ge太阳电池在辐射前后的四个暗特性特征参数,即串联电阻R_s、并联电阻R_(sh)、扩散电流I_(s1)和复合电流I_(s2).研究结果表明,质子辐射后单结GaAs/Ge太阳电池的R_s,R_(sh),I_(s1)和I_(s2)四个暗特性参数均发生显著变化.经低能质子辐射后,单结GaAs/Ge太阳电池的R_(sh)随位移损伤剂量的增加而减小,而R_s,I_(s1)和I_(s2)三个参数随位移损伤剂量的增加而增大,其中串联电阻随位移损伤剂量线性增加而与辐射质子能量无关.理论分析表明,上述参数的变化与质子辐射损伤区域分布有关.基区和发射区的损伤主要引起单结电池串联电阻和扩散电流的增加;结区的损伤导致并联电阻减小,复合电流增大. 展开更多
关键词 砷化镓太阳电池 质子辐射 暗特性 数值拟合
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CMOS图像传感器质子位移损伤效应实验与分析
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作者 杨洁铖 殷倩 +3 位作者 郭刚 张艳文 李理 钟向丽 《光学学报》 EI CAS 2024年第13期297-305,共9页
为了分析不同能量质子辐射引发的位移损伤对CMOS图像传感器(CIS)参数影响的差异,以商用CIS为研究对象,在中国原子能科学研究院回旋加速器上开展了50 MeV和90 MeV质子辐照实验,分析了不同能量及注量的质子辐照下器件的暗信号、热像素和... 为了分析不同能量质子辐射引发的位移损伤对CMOS图像传感器(CIS)参数影响的差异,以商用CIS为研究对象,在中国原子能科学研究院回旋加速器上开展了50 MeV和90 MeV质子辐照实验,分析了不同能量及注量的质子辐照下器件的暗信号、热像素和随机电码信号(RTS)等参数的退化规律。实验结果表明:平均暗信号的增加可以用位移损伤剂量等效,而相同位移损伤剂量下50 MeV质子辐照后表现出更大的暗信号非均匀性(DSNU)和热像素。像素间RTS现象是质子辐照后不同类型的缺陷所导致的。计算机辅助设计技术(TCAD)模拟结果表明深能级的点缺陷导致载流子浓度更高的热产生率,且团簇缺陷产生率高于简单点缺陷,产生率的不同导致像素间暗信号产生差异,进而产生DSNU和RTS现象。 展开更多
关键词 CMOS图像传感器 质子 暗信号 随机电码信号 缺陷
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