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1995年  第12卷  第2期

第九届全国核物理大会论文集
第九届全国核物理大会特邀请报告
非微扰色动力学的新途径
杨泽森, 周治宁, 钟毓澍
1995, 12(2): 1-6. doi: 10.11804/NuclPhysRev.12.02.001
摘要:
本文首先对于所谓光前QCD作一概述,然后阐述K.G.Wilson等人最近提出和发展的非微扰QCD理论方案的基本内容. We explain the ideas of the light - front QCD and describe an outline of Wilson S approach to nonperturbative QCD.
远离稳定线丰中子核素的合成和研究
罗亦孝
1995, 12(2): 7-12. doi: 10.11804/NuclPhysRev.12.02.007
摘要:
远离稳定线丰中子核素的合成和其衰变性质及核结构研究在过去几年中得到了迅速的发展,已成为原子核物理最为活跃的前沿领域之一.本文综述各质量区丰中子远离核的生成和鉴别,重点讨论丰中子远离核奇异衰变性质和核结构研究的重要进展,并简要介绍丰中子远离校研究在天文物理学中的重要应用.During the past few years our understanding of the decay properties and nuclear structure has been extended in a systematic fashion for the neutron-rich nuclei. This review will first sketch the production and identification of the neutron-rich nuclei throughout the whole mass region, and will then discuss the impressive progress in the studies of the exotic decay properties and nuclear structure of neutron-rich nuclei.Their astrophysical
重子相互作用和双重子
王凡, 平加仑, 巫光汉, 滕礼坚
1995, 12(2): 13-26. doi: 10.11804/NuclPhysRev.12.02.013
摘要:
本文提出了一个新的夸克势模型──夸克脱定域色屏蔽模型.此模型不用介子交换就给出既有排斥心又有中程吸引的核力,并且定性符合N-N散射相移1S0、3S1、1P1和3P1a首次从动力学证明了可能存在两类双重子.一类是像氘核那样的低自旋、弱束缚的双重子,另一类是高自旅、强束缚的六夸克态,d就是一个典型例子,它很可能是一个窄双重子共振态.一个平行的相对论性夸克势模型证实了与上述非相对论势模型有关的双重子态的预言. A new quark potential model, called quark delocalization and color screening model, has been proposed.This model yields both N-N repulsive core and intermediate range attraction without involving the meson exchange and fits the N-N 1S0,3S1,1p1and 3Pls phase shifts qualitatively. It verified dynamically that there might be two kinds of dibaryons.One is the deuteron like low spin, loosely binding two baryon states.The other is the high spin, strong binding six quark states, d. is a typical example and is...
高能物理的实验现状
祝玉灿
1995, 12(2): 27-31. doi: 10.11804/NuclPhysRev.12.02.027
摘要:
本文简要介绍国内外高能物理发展的最新状况,概述了国外对顶夸克存在的证据、电弱相互作用的精密检验及重味物理与轻子物理的进展.另外,还介绍了在北京谱仪上,有关τ质量测量、J/ψ衰变性质、ψ衰变性质及Ds衰变性质方面的最新结果. The recent experiment status of high energy physics in the world are presented briefly.The evidence for the TOP quark,precision test of EW interaction, heavy flavor physics and lepton physics are summarized in the first part. The second part introduces the new results on τ mass measurement,ψ decay,Ds decay and J/ψ decay performance from BES.
热核多重碎裂研究
戴光曦, 吴和宇, 李祖玉, 靳根明, 罗清政
1995, 12(2): 32-40. doi: 10.11804/NuclPhysRev.12.02.032
摘要:
本文对单体热核多重碎裂的理论与实验研究的国内外现状进行了评述;特别对国内近年来做出的实验结果进行了报导. A summary status of experimental and theoretical research in multi-fragmentation of single hot nucleus both in home and abroad is reviewed, especially some experimental results performed at Lanzhou recently are reported in detail.
极端条件下的核结构
陈永寿
1995, 12(2): 41-46. doi: 10.11804/NuclPhysRev.12.02.041
摘要:
本文评述了原子核结构研究的新进展和面临的新挑战.指出当今原子核结构发展方向的基本特点是“极端条件下的核结构”,它的主要内容是高自旋态物理和远离稳定线直至滴线原子核两个方面.而这些新发展方向,有新一代超级γ谱探测器系统和放射性核束加速器的发展和建造做为坚实的技术保证. This paper reviews the new developments and new challenges for the nuclear structure studies. It points out that the developments of the nuclear structure today is characterized by the term u Nuclear Structure in Exotic Conditions",the main contents of which are the high spin physics and physics for the nuclei far from the stability line and up to drip lines.All these new developments are solidly ensured by the developments and the constructions of super γ- ray spe ctrometer...
核固体物理学
夏元复
1995, 12(2): 47-51. doi: 10.11804/NuclPhysRev.12.02.047
摘要:
核固体物理的研究给核物理学家为解决物理学基本问题作出新贡献提供了许多的良机.本文概要叙述理论研究背景及用核方法研究凝聚态物质微结构的一些新结果,报道用核方法研究材料组份,讨论辐照条件下固体的结构和行为. The study of nuclear solid-state physics provides many new opportunities for nuclear physicists to contribute to the solution of some of the most of the fundamental questions in physics. This paper gives a brief survey of theoretical background and some new results on the microstructure of condensed matter obtained by nuclear methods.The elemental composition of the materials with nuclear methods are presented. The structure and behaviour of the solids under irradiation is discussed.
核天体物理学的某些重大疑难问题
彭秋和
1995, 12(2): 52-60. doi: 10.11804/NuclPhysRev.12.02.052
摘要:
本文简介与评述了当今核天体物理学的几个最为突出的重大疑难问题,如(1)恒星晚期演化研究中最为关键的几个核反应截面的不确定性;(2)Ⅰa型超新星爆发理论基本环节中的争论及其一些严重矛盾的问题;(3)Ⅱ型超新星爆发现有理论和它迄今尚未能自洽地获得(观测到的)爆发这一重大矛盾的关键原因及为突破这个困难人们最近所作的较为成功的探讨[25,26];(4)星际26Al问题和它所面临的困难及提出合成26Al核的可能新途径[28]. Some puzzles being anxious to be solved are reviewed in this paper, which include cross sections of the nuclear reactions being important for the stellar evolution, the key problems and difficulties in the theory of both typeⅠa and Ⅱ supernova, and the problem of interstellar medium 26Al.Some research subjects of nucleoastrophysics are also proposed.
非大会邀请报告
纵向阻尼系统的一些问题讨论
徐建铭
1995, 12(2): 61-66. doi: 10.11804/NuclPhysRev.12.02.061
摘要:
本文论述了探测束团相位以控制校正电压的纵向阻尼系统的有关问题、结果表明,如果直接用测得的束团相位偏离去控制校正电压,则阻尼效率极低。只有用dt讯号或把讯号延迟约1/4纵向振荡周期后再去控制校正电压,才能有效地完成纵向阻尼. Problems about the longitudinal damping systems in which the phase signals are used to control the correcting voltage are studied. The result shows that only either the dt or signal delayed by 1/4 synchrotron oscillation period can be used as the control signal in the longitudinal damping system. If the signal is directly used to control the correcting voltage, the required voltage will be too large to be accepted.
12MeV电子辐照技术在半导体器件中的应用
杭德生
1995, 12(2): 67-68. doi: 10.11804/NuclPhysRev.12.02.067
摘要:
本文较全面地介绍了高能12MeV电子辐照技术的原理、方法、特点以及在快速二极管、开关晶体管,快速可控硅中成功的应用. This article gives complete introduction to the principles, method and traits of the technology of the high-energy 12MeV electron irradiation. It also describes a successful application in fast diode, switch transistor and fast SCR.