《原子与分子物理学报》征稿简则

正《原子与分子物理学报》是中国物理学会原子与分子物理专业委员会、四川省物理学会和四川大学联合主办的专业性学术刊物,主要报导原子与分子物理及其交叉学科(包括:凝聚态物理、激光物理、等离子体物理、光学、化学物理、非线性动力学等)的理论、实验及其应用等方面的研究成果和进展.1.开设栏目1.1研究论文:透彻、完整、清晰地报导具有学术价值的新的实验、理论结果和进展.研究论文一般分引言、理论或实验方法、结果与讨     

A-B效应的动力学机制及其实验验证方案

主要讨论了A-B效应所产生的动力学机制，指出运动电子所产生的磁场和外磁场的相互叠加是产生A-B效应的动力学原因。如果能够屏蔽掉运动电子所产生的磁场使之不能和外磁场相互叠加，那么A-B效应也将随之消失。为了验证这一结论，提出了一种新的实验方案，该方案可以对A-B效应的动力学机制做出明确的判断。 关键词： A-B效应 超导电性 迈斯纳效应 介观物理     

快电子与原子分子碰撞实验

 原子分子结构是原子分子物理学的基本问题,光谱实验和碰撞实验是获得原子分子结构实验数据的基本方法.当前原子分子的激发态结构和碰撞动力学仍然是原子分子物理的最重要的前沿研究领域之一,特别是原子分子高激发态、原子超精细结构和原子团簇更是十分活跃.原子分子及离子的碰撞过程不仅与原子结构、分子结构及其状态密切相关,而且普遍存在于天体、星际空间、地球大气、等离子体以及化学反应过程中.因此这些碰撞过程的基本数据和实验技术对于能源项目、军事技术和许多学科的发展有着密切关系.这些学科包括核物理、凝聚态物理、材料科学、等离子体物理、空间物理、天体物理、化学物理、分子生物学等.     

《原子与分子物理学报》征稿简则

正《原子与分子物理学报》是中国物理学会原子与分子物理专业委员会、四川省物理学会和四川大学联合主办的专业性学术刊物,主要报导原子与分子物理及其交叉学科(包括:凝聚态物理、激光物理、等离子体物理、光学、化学物理、非线性动力学等)的理论、实验及其应用等方面的研究成果和进展.1.开设栏目1.1研究论文:透彻、完整、清晰地报导具有学术价值的新的实验、理论结果和进展.研究论文一般分引言、理论或实验方法、结果与讨     

沟道效应在粒子物理中的应用

本文综述有关利用沟道效应技术从事粒子物理实验的可能性。讨论课题包括短寿命粒子的触发系统,重味粒子磁矩的测量;应用阻塞技术测量粒子寿命;沟道辐射用于粒子识别;光子束,带电粒子束的弯曲和聚焦;晶体中的Primakoff效应;生成沟道效应;以及用于长基线中微子振荡实验的粒子束。     

沟道效应在粒子物理中的应用

本文综述有关利用沟道效应技术从事粒子物理实验的可能性。讨论课题包括短寿命粒子的触发系统,重味粒子磁矩的测量;应用阻塞技术测量粒子寿命;沟道辐射用于粒子识别;光子束,带电粒子束的弯曲和聚焦;晶体中的Primakoff效应;生成沟道效应;以及用于长基线中微子振荡实验的粒子束。     

黄金分割法在物理实验中的应用--金割效应物理摆

“金割效应物理摆”是应用黄金分割法对物理摆进行研究的自制教学仪器,使用它可以进行物理摆周期极小值的测定等实验内容,实验装置采用计算机实时数据采集和处理等技术手段,教学效果更加理想。     

《原子与分子物理学报》征稿简则

《原子与分子物理学报》是四川省物理学会和四川大学联合主办的专业性学术刊物,主要报导原子与分子物理及其交叉学科(包括:凝聚态物理、激光物理、等离子体物理、光学、化学物理、非线性动力学等)的理论、实验及其应用等方面的研究成果和进展.1.开设栏目1.1研究论文:透彻、完整、清晰地报导具有学术价值的新的实验、理论结果和进展.研究论文一般分引言、理论或实验方法、结果与讨论、结论等部分,不超过8000字.要求在引言及相关部分对该研究内容相关的背景及现状、本工作所解决的问题及意义有清楚、简洁和客观的叙述.     

《原子与分子物理学报》征稿简则

正《原子与分子物理学报》是中国物理学会原子与分子物理专业委员会、四川省物理学会和四川大学联合主办的专业性学术刊物,主要报导原子与分子物理及其交叉学科(包括:凝聚态物理、激光物理、等离子体物理、光学、化学物理、非线性动力学等)的理论、实验及其应用等方面的研究成果和进展.1.开设栏目1.1研究论文:透彻、完整、清晰地报导具有学术价值的新的实验、理论结果和进展.研究论文一般分引言、理论或实验方法、结果与讨论、结论等部分,不超过8000字.要求在引言及相关部分对该研究内容相关的背景及现状、本工作所解决的问题及意义有清楚、简洁和客     

物理实验仪器设备开放的价值链效应

仪器设备的开放式管理是开放式物理实验教学基本活动最主要的支持性活动。包括时间开放、内容开放、对象开放的物理实验仪器设备全面开放的价值链效应表现在两个方面：一是对层级型开放式物理实验教学的支持性效应,二是对大学物理实验室建设加强管理、增加投入、培训师资的倒逼机制效应。     

Electron-ion collider in China

Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as nuclei. As a future high energy nuclear physics project, an Electron-ion collider in China (EicC) has been proposed. It will be constructed based on an upgraded heavy-ion accelerator, High Intensity heavy-ion Accelerator Facility (HIAF) which is currently under construction, together with a new electron ring. The proposed collider will provide highly polarized electrons (with a po- larization of 80%) and protons (with a polarization of 70%) with variable center of mass energies from 15 to 20 GeV and the luminosity of (2–3)×10³³ cm−2•s−1. Polarized deuterons and Helium-3, as well as unpolarized ion beams from Carbon to Uranium, will be also available at the EicC.The main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region, including 3D tomography of nucleon; the partonic structure of nuclei and the parton interaction with the nuclear environment; the exotic states, especially those with heavy flavor quark contents. In addition, issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the EicC. In order to achieve the above-mentioned physics goals, a hermetical detector system will be constructed with cutting-edge technologies.This document is the result of collective contributions and valuable inputs from experts across the globe. The EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United States. The success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China.     

电子-离子对撞机上开展核子及其激发态研究的建议

核子及其激发态性质研究一直是中高能核物理的一个重要研究领域。然而,到目前为止,对核子及其激发态内部结构的了解还处在初级阶段。首先介绍了核子及其激发态研究现状,指出了三夸克模型在描述核子特别是核子激发态内部结构方面存在很大的缺陷。为解决传统三夸克模型的不足,有一种新的观点认为虽然独立的五夸克态不存在,但是核子及其共振态中存在可观的五夸克激发。这种五夸克图像提供了一个描述核子内部结构的新见解,给出了与经典三夸克图像相当不同的核子激发态谱预言,还有待实验检验。目前国内外正在论证的电子–离子对撞机(EIC)将是研究核子结构下一代最重要的加速器装置,被视为"超级电子显微镜"。由于EIC有较高的能量和亮度,特别是低本底等优势,可以开展核子及其激发态性质的研究以及新强子态研究。     

LSoft hadronic interactions in the COMPASS experiment

The COMPASS experiment at the CERN SPS complex is planning for the year 2004 its first run with a hadron beam. Two physics subjects will be addressed: the study of pion polarizabilities by means of the Primakoff scattering, and the study of diffractively producedηπ ^?-systems. The analysis of η-meson production is related to the search of hybrid mesons, of which no conclusive evidence exists so far.The concept of the Primakoff and diffractive trigger systems and the proposed modifications to the COMPASS muon setup are described in detail. The estimate of event rates for the two measurements shows that COMPASS can provide a statistical accuracy significantly higher than existing data from other experiments.     

Physically self-consistent basis for modern cosmology

Cosmoparticle physics appeared as a natural result of internal development of cosmology seeking physical grounds for inflation, baryosynthesis, and nonbaryonic dark matter and of particle physics going outside the Standard Model of particle interactions. Its aim is to study the foundations of particle physics and cosmology and their fundamental relationship in the combination of respective indirect cosmological, astrophysical, and physical effects. The ideas on new particles and fields predicted by particle theory and on their cosmological impact are discussed, as well as the methods of cosmoparticle physics to probe these ideas, are considered with special analysis of physical mechanisms for inflation, baryosynthesis, and nonbaryonic dark matter. These mechanisms are shown to reflect the main principle of modern cosmology, putting, instead of formal parameters of cosmological models, physical processes governing the evolution of the big-bang universe. Their realization on the basis of particle theory induces additional model-dependent predictions, accessible to various methods of nonaccelerator particle physics. Probes for such predictions, with the use of astrophysical data, are the aim of cosmoarcheology studying astrophysical effects of new physics. The possibility of finding quantitatively definite relationships between cosmological and laboratory effects on the basis of cosmoparticle approach, as well as of obtaining a unique solution to the problem of physical candidates for inflation, mechanisms of baryogenesis, and multicomponent dark matter, is exemplified in terms of gauge model with broken family symmetry, underlying horizontal unification and possessing quantitatively definite physical grounds for inflation, baryosynthesis, and effectively multicomponent dark-matter scenarios.     

Heavy flavour physics and CP violation at LHCb: A ten-year review

Heavy flavour physics provides excellent opportunities to indirectly search for new physics at very high energy scales and to study hadron properties for deep understanding of the strong interaction. The LHCb experiment has been playing a leading role in the study of heavy flavour physics since the start of the LHC operations about ten years ago, and made a range of high-precision measurements and unexpected discoveries, which may have far-reaching implications on the field of particle physics. This review highlights a selection of the most influential physics results on CP violation, rare decays, and heavy flavour production and spectroscopy obtained by LHCb using the data collected during the first two operation periods of the LHC. The upgrade plan of LHCb and the physics prospects are also briefly discussed.     

中国极化电子离子对撞机探测器设计

核子是构成宇宙可见物质的最主要成分,也是研究强相互作用的最佳实验室。对核子内部结构的研究是当前理论和实验研究的重要前沿。在核子内部结构的实验研究中,电子- 离子对撞机(Electron Ion Collider, EIC)是最理想的装置,能提供核子内部最清晰的图像,是人类认识物质世界深层次结构,特别是核子与原子核结构最理想的工具。中国极化电子离子对撞机EicC项目,设想在已开建的HIAF 高能离子束的基础上进行升级:将离子束流升级成15~20 GeV 的极化束流,建设3~5 GeV 高能极化电子束流,实现质心系能量为10~20 GeV双极化电子- 离子对撞,在海夸克能区对核子内部结构进行精细测量,并对质子质量、奇特强子态等诸多重要物理课题展开研究。在本文中,我们开发了EicC 快模拟软件,对探测器性能进行参数化模拟;通过物理模拟汇集EicC探测需求,利用探测器模拟软件进行优化并提出EicC 探测器谱仪的初步设计方案。该谱仪方案提供了接近全立体角的覆盖范围和大动量范围内的粒子鉴别能力,兼顾EicC项目丰富的物理课题。     

Supersymmetric technicolor

We propose a supersymmetric model of particle physics in which supersymmetry is broken dynamically by strong gauge forces. The model, as it stands, requires that one parameter be fine tuned; a grand unified version would not require any fine tuning. The model has no strong CP problem, and agrees with all known particle physics experiments. A variety of new particles, many of which weigh less than 100 GeV, are predicted.     

A possible unification of Newton's and Coulomb's forces

We have considered electric charge as the fourth component of the particle momentum in five-dimensional space–time. The fifth dimension has been compactified on a circle with an extremely small radius determined from the fundamental physics constants. First, we have given equations in the framework of five-dimensional special relativity and determined the corresponding reduction to four-dimensional space–time. Then, in order to obtain an appropriate charge-to-mass ratio and to avoid the Fourier modes problem, we have considered the propagation of an off-mass shell particle in the five-dimensional space–time which can be interpreted as the motion of an on-mass shell particle in the four-dimensional world we experience. As an example, we have discussed the five-dimensional kinematic equations associated with the electron-positron annihilation process into two photons. Finally, the consequences on the gravitational interaction between two elementary charged particles has been studied. As a main result, we have obtained a unification of Newton's gravitational and Coulomb's electrostatic forces.     

强场X射线激光物理

相干X光,特别是X射线自由电子激光技术的发展提供了一种新的产生超强光场的途径.由于其较高的光子能量、高峰值功率密度与超短的脉冲长度,有望将强场激光物理从可见光波段推进到X光波段.目前,基于X射线的非线性原子分子物理已取得了初步进展,随着X射线光强的提升,相互作用将进入相对论物理、强场量子电动力学(quantum electrodynamics,QED)物理等领域,为激光驱动加速与辐射、QED真空、暗物质的产生与探测等带来新的科学发现机会.本文对强场X射线激光在固体中的尾场加速、真空极化、轴子的产生与探测等方面进行介绍,旨在阐明X射线波段强场物理在若干基础前沿与关键应用方面的独特优势,并对未来的发展方向进行展望.