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Free Electrons Compton Scattering Can Produce an Illusion of Expanding Universe
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作者 Guanfeng Cheng 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2022年第4期862-873,共12页
The high-precision measurements of the Hubble parameter make the theory of cosmic expansion more and more confusing, which bolsters the idea that new physics may be needed to explain the mismatch. Astronomical observa... The high-precision measurements of the Hubble parameter make the theory of cosmic expansion more and more confusing, which bolsters the idea that new physics may be needed to explain the mismatch. Astronomical observations show that the Universe is expanding exponentially. Free electron Compton scattering (FEC) can produce the illusion of exponentially expanding Universe: FEC causes photons to redshift exponentially, and the photon beam exponentially expands along the propagation direction. Is this a coincidence? The redshift factor of the FEC is z = (1+z);the beam length stretch factor (time dilation of the supernova curve) of the FEC is z = (1+z);the expansion factor of the beam volume of the FEC is z = (1+z)<sup>3</sup>, and the FEC effect does not blur the image of distant galaxies. The reason for rejecting the “tired light” does not hold in FEC. 展开更多
关键词 Expanding Universe Hubble Parameter Free electron compton Scattering CMBR
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The Planck Constant and Its Relation to the Compton Frequency
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作者 Espen Gaarder Haug 《Journal of Applied Mathematics and Physics》 2024年第1期168-180,共13页
The Planck constant is considered one of the most important universal constants of physics, and despite all we know much about it, the physical nature of it has not been fully understood. Further investigation and new... The Planck constant is considered one of the most important universal constants of physics, and despite all we know much about it, the physical nature of it has not been fully understood. Further investigation and new perspectives on the Planck constant should therefore be of interest. We demonstrate that the Planck constant also can be directly linked to the Compton frequency of one, which again is divided by the Compton frequency in one kg. If this is right, it means also the Planck constant is linked to quantization of matter, not only energy. However, as we will show the frequency of one when expressed in relation to kg will be observational time dependent. This means the missing mass gap surprisingly both is equal to the Planck mass, which is larger than any known particle and also it is linked to a very small mass that again is equal to what has been suggested as the photon mass in the existing literature. This new view could be an important step forward in understanding the physical nature of the Planck constant as well as the mass gap and even the rest mass of a photon. 展开更多
关键词 Planck Constant compton Frequency electron Proton Count
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X射线辐照典型材料出射电子特征规律研究
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作者 韩立会 朱金辉 +3 位作者 王建国 牛胜利 刘利 左应红 《强激光与粒子束》 北大核心 2025年第10期107-115,共9页
电子发射参数是研究X射线辐照下腔体结构产生系统电磁脉冲(SGEMP)效应的关键电流源项。采用基于浓缩历史方法与单事件方法建立的电子输运模块开展光子-电子耦合输运蒙特卡罗模拟计算。通过分析光子、电子与物质相互作用特点,系统分析了... 电子发射参数是研究X射线辐照下腔体结构产生系统电磁脉冲(SGEMP)效应的关键电流源项。采用基于浓缩历史方法与单事件方法建立的电子输运模块开展光子-电子耦合输运蒙特卡罗模拟计算。通过分析光子、电子与物质相互作用特点,系统分析了不同能量X射线正入射辐照典型材料时产生的背向及前向电子发射特性,包括电子能谱、角分布规律。建立基于光子平均自由程的背向电子产额计算方法,提出了饱和产额计算公式与饱和厚度;针对前向电子产额,结合光子衰减规律和电子最大射程建立了计算模型,并引入累积因子进行修正,进一步提升了准确性。在SGEMP关注的X射线能量范围及典型材料厚度范围内进行验证,结果显示,与蒙特卡罗直接模拟相比,计算公式给出的背向、前向电子产额相对偏差在10%以内,研究结果为SGEMP的电子产额计算提供了一种高效便捷的求解方法。 展开更多
关键词 X射线 光电子 康普顿散射电子 蒙特卡罗 系统电磁脉冲 电子产额 分析模型
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Compton散射下等离子体中电子相轨道的演化 被引量:2
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作者 郝晓飞 尹刚 郝东山 《核聚变与等离子体物理》 CAS CSCD 北大核心 2010年第3期217-219,共3页
用KMR模型研究了等离子体中多光子非线性Compton散射下电子相轨道的演化,发现电子与光子进行能量交换后,只有未被俘获电子的相轨道才能从周期性向非周期性、随机型演化,其演化剧烈程度随电子吸收光子数的增大而加剧,随电子与光子碰撞非... 用KMR模型研究了等离子体中多光子非线性Compton散射下电子相轨道的演化,发现电子与光子进行能量交换后,只有未被俘获电子的相轨道才能从周期性向非周期性、随机型演化,其演化剧烈程度随电子吸收光子数的增大而加剧,随电子与光子碰撞非弹性成分和碰撞前初始速度的增大而迅速减弱,但低于强激光场中的剧烈程度。当电子被光场俘获时,这种演化过程结束并做稳定的运动,光子不再为电子提供能量。 展开更多
关键词 等离子体 多光子非线性compton散射 电子相轨道 演化
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用于中子俘获反应截面测量的康普顿相机读出电子学研究
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作者 王维宇 曹平 +2 位作者 孙振宇 任杰 王金成 《核电子学与探测技术》 北大核心 2025年第2期145-153,共9页
CSNS Back-n实验环境中复杂的γ本底会影响中子俘获截面测量结果的准确性。本文将康普顿散射成像的原理引入总能量型探测器,开展用于中子俘获反应截面测量的康普顿相机读出电子学的研究,通过计算γ射线的入射方向抑制本底,从而提高效应... CSNS Back-n实验环境中复杂的γ本底会影响中子俘获截面测量结果的准确性。本文将康普顿散射成像的原理引入总能量型探测器,开展用于中子俘获反应截面测量的康普顿相机读出电子学的研究,通过计算γ射线的入射方向抑制本底,从而提高效应本底比。其中探测器选用低本底高分辨的CeBr_3晶体耦合硅光电倍增管(SiPM)进行设计,并基于ASIC和FPGA对320路SiPM输出信号进行读出,通过高性能TDC与QDC实现对γ射线的时间与能量的测量。经过测试,康普顿相机的能量分辨率好于5.7%@662 keV,符合时间分辨σ_t为0.66 ns,eV能区和keV能区的效应本底比分别是现有C_6D_6探测器的1.61倍和3.30倍。测试结果说明了该方案的可行性,可为在Back-n上开展中子俘获反应截面测量提供技术支撑。 展开更多
关键词 中子俘获反应截面 CeBr_(3)探测器 康普顿相机 读出电子学
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利用频域理论研究束缚电子在强激光场中的单光子康普顿散射过程
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作者 邱媛媛 杨玉军 +2 位作者 郭迎春 魏志义 王兵兵 《物理学报》 北大核心 2025年第15期9-16,共8页
康普顿散射是指强激光场与物质中电子相互作用导致光子发射的非弹性散射过程.近年来,随着X射线自由电子激光器迅速发展,X射线激光的强度逐渐增大,X射线单光子康普顿散射过程的信号逐渐增强.本文基于非微扰量子电动力学的频域理论研究强... 康普顿散射是指强激光场与物质中电子相互作用导致光子发射的非弹性散射过程.近年来,随着X射线自由电子激光器迅速发展,X射线激光的强度逐渐增大,X射线单光子康普顿散射过程的信号逐渐增强.本文基于非微扰量子电动力学的频域理论研究强X射线激光场下束缚电子的单光子康普顿散射过程.发现随着入射光子能量的增大,在背向散射时康普顿散射双重微分概率会逐渐降低.本工作为高频强激光场中康普顿散射与原子电离之间建立了联系,为探索高激光强度下的原子结构动力学提供了一个研究平台. 展开更多
关键词 康普顿散射 频域理论 束缚电子
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Compton散射对激光等离子体中光场和电子密度分布的影响 被引量:4
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作者 郝东山 禹定臣 《核聚变与等离子体物理》 CAS CSCD 北大核心 2006年第4期282-287,共6页
应用电子和多光子集团非弹性碰撞模型和冷等离子体模型,研究了飞秒强激光与线性等离子体发生多光子非线性Compton散射时,散射激光与入射激光形成的飞秒耦合激光场对线性等离子体层中光场和电子密度分布的影响。研究发现,在耦合激光的有... 应用电子和多光子集团非弹性碰撞模型和冷等离子体模型,研究了飞秒强激光与线性等离子体发生多光子非线性Compton散射时,散射激光与入射激光形成的飞秒耦合激光场对线性等离子体层中光场和电子密度分布的影响。研究发现,在耦合激光的有质动力作用下,电子密度分布和离子密度分布比Compton散射前的偏离更加严重,电子密度的变化比离子密度的变化更快,产生的静电场更强。即使耦合激光场非常弱,电子的运动仍表现出相对论效应,仍有静电场存在。 展开更多
关键词 飞秒激光 等离子体 电子密度 compton散射
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相对论性电子的Compton散射 被引量:2
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作者 姜孟瑞 梁大光 孙和丽 《山东师范大学学报(自然科学版)》 CAS 2010年第3期37-39,42,共4页
用单粒子理论研究了相对论性电子的Compton散射.当散射过程不改变光子运动方向时,存在n倍频效应,也存在光子频率及运动方向都不改变的散射过程.指出了一定条件下可以实现激光场对电子的有效加速.
关键词 compton散射 自由电子激光 n倍频效应 激光加速
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超强激光场中磁逆多光子非线性Compton散射的电子加速 被引量:2
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作者 郝晓飞 刘安辉 郝东山 《量子电子学报》 CAS CSCD 北大核心 2009年第6期664-667,共4页
应用电子与多光子集团非弹性Compton散射模型,分析、计算了磁逆多光子非线性Compton散射的电子加速,结果表明,散射前做Landau圆轨道运动的电子并非是热电子,而是处于激发态的电子。当耦合光的频率与处于激发态电子的频率相等时,能发生... 应用电子与多光子集团非弹性Compton散射模型,分析、计算了磁逆多光子非线性Compton散射的电子加速,结果表明,散射前做Landau圆轨道运动的电子并非是热电子,而是处于激发态的电子。当耦合光的频率与处于激发态电子的频率相等时,能发生磁逆多光子非线性Compton散射,放出高γ射线,但产生高γ射线的几率要比产生低γ射线的几率小。若电子被光场俘获,电子可从激光场中获得巨大的加速能量。 展开更多
关键词 激光物理 超强激光 磁逆compton散射 Landau轨道 电子加速
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强激光等离子体中多光子非线性Compton微分散射截面特性 被引量:3
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作者 郝东山 衡耀付 《核聚变与等离子体物理》 EI CAS CSCD 北大核心 2007年第3期198-202,共5页
研究了强激光等离子体中多光子非线性Compton效应下阻尼电子与光子的散射特性,推出了其微分散射截面表达式。研究表明,尾波场的涨落和随机误差是电子发生纵向群聚的根本原因,且能引起电子更剧烈的群聚。电子横向动量的变化是引起电子和... 研究了强激光等离子体中多光子非线性Compton效应下阻尼电子与光子的散射特性,推出了其微分散射截面表达式。研究表明,尾波场的涨落和随机误差是电子发生纵向群聚的根本原因,且能引起电子更剧烈的群聚。电子横向动量的变化是引起电子和光子散射的根本原因,其微分散射截面随与一个电子同时作用的光子数的增大而减小,随散射非弹性成分的增大而迅速减小,但比激光场中的情况来得慢一些。只有当与电子同时作用的光子数与散射非弹性成分相等时电子才能被光场俘获。 展开更多
关键词 多光子非线性compton散射 微分散射截面 阻尼电子
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Lorentz-Compton佯谬与一个双赢判决性散射实验设计 被引量:1
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作者 甘永超 胡战 周刚 《光散射学报》 2006年第1期75-79,共5页
通过对“可见光区域是否存在Compton效应”的讨论而进一步深化到经典条件下“光的量子理论能否包含光的经典电磁理论”的实验验证,发现了Lorentz-Compton佯谬,并基于逆Compton散射设计了一个敏感而又可行的双赢判决性散射实验来解决此... 通过对“可见光区域是否存在Compton效应”的讨论而进一步深化到经典条件下“光的量子理论能否包含光的经典电磁理论”的实验验证,发现了Lorentz-Compton佯谬,并基于逆Compton散射设计了一个敏感而又可行的双赢判决性散射实验来解决此佯谬。 展开更多
关键词 光谱学 双赢判决性散射实验设计 光-电子散射 Lorentz-compton佯谬 波粒二象性
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Fine Structure Constant Model Demonstrates the Electron Elementary Charge of Having an Intrinsic Manifold
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作者 Emmanouil Markoulakis Emmanuel Antonidakis 《Journal of Applied Mathematics and Physics》 2022年第10期2923-2939,共17页
Using our recently published electron’s charge electromagnetic flux manifold fiber model of the electron, described by analytical method and numerical simulations, we show how the fine structure constant is embedded ... Using our recently published electron’s charge electromagnetic flux manifold fiber model of the electron, described by analytical method and numerical simulations, we show how the fine structure constant is embedded as a geometrical proportionality constant in three dimensional space of its charge manifold and how this dictates the first QED term one-loop contribution of its anomalous magnetic moment making for the first time a connection of its intrinsic characteristics with physical geometrical dimensions and therefore demonstrating that the physical electron charge cannot be dimensionless. We show that the fine structure constant (FSC) α, and anomalous magnetic moment α<sub>μ</sub> of the electron is related to the sphericity of its charge distribution which is not perfectly spherical and thus has a shape, and therefore its self-confined charge possesses measurable physical dimensions. We also explain why these are not yet able to be measured by past and current experiments and how possible we could succeed. 展开更多
关键词 electron Charge Manifold electron Fiber Model compton electron Fine Structure Constant Anomalous Magnetic Moment electron Dipole Moment Classical Electrodynamics electron Geometry
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COMPTON散射电子密度重排的图像重建算法
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作者 罗仁 张廷杰 《计算物理》 CSCD 北大核心 1998年第2期118-124,共7页
建立了一个由Compton散射数据图像重建的电子密度重排算法,讨论了离散问题的适定性。并作了一些数值实验。
关键词 compton散射 电子密度重排 图像重建算法 问题的适定性
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A New Theory on Electron Wave-Particle Duality 被引量:2
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作者 Nader Butto 《Journal of High Energy Physics, Gravitation and Cosmology》 2020年第4期567-578,共12页
A theory employing the vortex shape of the electron was presented to resolve the enigma of the wave-particle duality. Conventions such as “particle” and “wave” were used to describe the behavior of quantum objects... A theory employing the vortex shape of the electron was presented to resolve the enigma of the wave-particle duality. Conventions such as “particle” and “wave” were used to describe the behavior of quantum objects such as electrons. A superfluid vacuum formed the base to describe the basic vortex structure and properties of the electron, whereas various formulations derived from hydrodynamic laws described the electron vortex circumference, radius, angular velocity and angular frequency, angular momentum (spin) and magnetic momentum. A vortex electron fully explained the associations between momentum and wave, and hydrodynamic laws were essential in deriving the energy and angular frequency of the electron. In general, an electron traveling in space possesses internal and external motions. To derive the angular frequency of its internal motion, the Compton wavelength was used to represent the length of one cycle of the internal motion that is equal to the circumference of the electron vortex. The angular frequency of the electron vortex was calculated to obtain the same value according to Planck’s theory. A traveling vortex electron has internal and external motions that create a three-dimensional helix trajectory. The magnitude of the instantaneous velocity of the electron is the resultant of its internal and external velocities, being equal to the internal velocity reduced by the Lorentz factor (whose essence is presented in a detailed formulation). The wavelength of the helix trajectory represents the distance traveled by a particle along its axis during one period of revolution around the axis, resulting in the same de Broglie wavelength that corresponds to the helix pitch of the helix. Mathematical formulations were presented to demonstrate the relation between the energy of the vortex and its angular frequency and de Broglie’s wavelength;furthermore, Compton’s and de Broglie’s wavelengths were also differentiated. 展开更多
关键词 Superfluid Vortex compton Wavelength electron Momentum Broglie Wavelength Lorentz Factor Angular Frequency
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未被俘获电子对多光子非线性Compton散射能量转换效率的影响 被引量:7
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作者 郝东山 《强激光与粒子束》 EI CAS CSCD 北大核心 2003年第9期855-858,共4页
 应用单粒子理论和电子与光子非弹性碰撞模型,研究了未被俘获电子对多光子非线性Compton散射能量转换效率的影响。结果表明,未被俘获电子使该散射的频谱展宽随入射电子速度和与电子同时作用的光子数的增大而增大,随电子与光子非弹性碰...  应用单粒子理论和电子与光子非弹性碰撞模型,研究了未被俘获电子对多光子非线性Compton散射能量转换效率的影响。结果表明,未被俘获电子使该散射的频谱展宽随入射电子速度和与电子同时作用的光子数的增大而增大,随电子与光子非弹性碰撞成分的增大而减小,从而使能量转换效率近乎与电子入射速度正比降低。用低能电子入射,能有效地减小这种损失。 展开更多
关键词 多光子非线性compton散射 能量转换效率 俘获电子 超强激光场
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激光等离子体中多光子非线性Compton散射的光子加速 被引量:11
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作者 郝东山 郝晓飞 《量子光学学报》 CSCD 2003年第3期105-108,共4页
利用相对论性电子与光子非弹性碰撞模型,研究了激光等离子体中发生多光子非线性Compton散射时,由于尾波场的作用而引起的散射光子频率的变化。结果表明,光子可以从激光场中获得能量,在光子总数减少的情况下,光子频率增大,光子获得加速。
关键词 激光等离子体 多光子非线性compton散射 光子加速 电子密度扰动
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Influence of Characteristics of Substance on Parameters of Interaction of Photons High Energy with Free Electrons 被引量:1
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作者 Andrey N. Volobuev Eugene S. Petrov 《Journal of Modern Physics》 2011年第12期1443-1449,共7页
Various variants of interaction of photons high energy with free electrons in substance are investigated. It is shown, that among these variants, in substance can be observed: absorption of a photon by electron, coher... Various variants of interaction of photons high energy with free electrons in substance are investigated. It is shown, that among these variants, in substance can be observed: absorption of a photon by electron, coherent and not coherent scattering of photons, a stop electron after interaction with a photon. Dependence of change of length of a wave of a photon after interaction with electron from parameters of substance and speed of movement electron is found. 展开更多
关键词 PHOTONS electronS INTERACTION Not COHERENT Scattering compton Effect Substance
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Compton profile of molecular hydrogen
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作者 赵小利 杨科 +6 位作者 徐龙泉 马永朋 闫帅 倪冬冬 康旭 刘亚伟 朱林繁 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第3期118-121,共4页
The Compton profile of molecular hydrogen has been determined at an incident photon energy of 20 ke V based on the third generation synchrotron radiation, and the statistical accuracy of 0.2% is achieved at p z = 0. D... The Compton profile of molecular hydrogen has been determined at an incident photon energy of 20 ke V based on the third generation synchrotron radiation, and the statistical accuracy of 0.2% is achieved at p z = 0. Different theoretical methods, i.e., the density functional method, and the Hartree–Fock method, were used to calculate the Compton profiles of hydrogen with different basis sets, and the theoretical calculations are in agreement with the experimental observation in the whole p z region. Compared with the HF calculation, the DFT-B3 LYP ones are in better agreement with the present experiment, which indicates the electron correlation effect is very important to describe the wavefunction in the ground state of hydrogen. 展开更多
关键词 compton profile hydrogen molecule electron correlation
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The Inner Structure of the Intrinsic Electron and the Origin of Self-Mass
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作者 Victor Vaguine 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2023年第1期174-189,共16页
A brief review and analysis of two historical models of the electron, the charged spinning sphere and Goudsmit and Uhlenbeck’s concept, is presented. It is shown that the enormous potential of classical electrodynami... A brief review and analysis of two historical models of the electron, the charged spinning sphere and Goudsmit and Uhlenbeck’s concept, is presented. It is shown that the enormous potential of classical electrodynamics has been underutilized in particle physics. Such observation leads to discovery of a principal component in the electron inner structure—the charged c-ring. The intrinsic (fundamental) electron model based on the charged c-ring successfully explains the ontology of the charge fractionation in quantum chromodynamics and the formation of Cooper pairs in superconductivity. The c-ring properties are explained on the basis of the General Compton Conditions as defined. Properties of the charged c-ring include the explanation of the boundary conditions, electro-magnetostatic field configuration, self-mass, spin, magnetic moment, and the gyromagnetic ratio. The self-mass of the intrinsic electron is 100% electro-magnetostatic and it is shown how to compute its value. The classical-quantum divide no longer exists. Relation between the intrinsic electron and the electron is fundamentally defined. The electron is the composite fermion consisting of the intrinsic electron and the neutrino. The ontology of the anomaly in the electron magnetic moment is demonstrated—it is due to the addition of the neutrino magnetic moment to the overall electron magnetic moment. The intrinsic electron replaces the W? boson in particle physics, resulting in a fundamental implication for the Standard Model. 展开更多
关键词 Intrinsic electron Inner Structure Electro-Magnetostatic Self-Mass General compton Conditions Charged C-Ring Visualization C-Ring Length Constant
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基于激光康普顿散射的电子束参数测量方法 被引量:1
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作者 王振伟 许杭华 +4 位作者 郝子锐 张岳 刘龙祥 范功涛 王宏伟 《核技术》 EI CAS CSCD 北大核心 2024年第11期41-49,共9页
加速器电子束参数的无损间接测量是一个难题,储存环上传统的X射线针孔成像(X-ray Pinhole Imaging)方法和直线加速器上的狭缝衍射法(Optical Diffraction Radiation,ODR)都存在不足之处。激光康普顿散射(Laser Compton Scattering,LCS)... 加速器电子束参数的无损间接测量是一个难题,储存环上传统的X射线针孔成像(X-ray Pinhole Imaging)方法和直线加速器上的狭缝衍射法(Optical Diffraction Radiation,ODR)都存在不足之处。激光康普顿散射(Laser Compton Scattering,LCS)装置是利用相对论电子与低能光子相互碰撞产生高能γ束的新光源。本文提出了一种基于激光康普顿散射光源测量能谱提取电子束参数的方法,该研究旨在通过自主开发的基于Geant4的蒙特卡罗程序模拟重建出与实验测量能谱符合一致的模拟谱,从而获得电子束参数,包括水平方向束斑尺寸、电子能量和发射度。在对上海同步辐射装置(Shanghai Synchrotron Radiation Facility,SSRF)的激光γ光束线站(Shanghai Laser Electron Gamma Source,SLEGS)上的多碰撞角度γ测量能谱做了一致性的验证,结果表明:提取的上海光源储存环电子束参数与理论值符合得较好。这证明了激光康普顿散射是一个有效的电子束参数无损间接测量方法,为后续其他电子束的提取奠定基础。 展开更多
关键词 激光康普顿散射 电子束参数 蒙特卡罗模拟 Γ能谱
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