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核子-核子碰撞截面对同位素标度参数α的同位旋效应
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：O571.6[理学—粒子物理与原子核物理;理学—物理] TN957.51[电子电信—信号与信息处理;电子电信—信息与通信工程]
  • 作者机构：[1]天水师范学院数理和信息学院,天水741000, [2]中国科学院近代物理研究所,兰州730000, [3]兰州重离子加速器国家实验室原子核理论中心,兰州730000, [4]上海理工大学科学学院,上海200093
  • 相关基金：国家自然科学基金重点项目（批准号：10435080）,国家自然科学基金（批准号：10447006,10575075）,中国科学院知识创新工程重要方向项目（批准号：KJCX2-SW-N02）资助的课题.
作者： 刘建业[1,2,3], 郭文军[4], 左维[2,3], 李希国[2,3]
关键词： 同位旋效应, 核子-核子截面, 机理, 同位素标度, isospin effect, nucleon-nucleon cross section, mechanism, isoscaling
中文摘要：

对两对重离子中心碰撞系统^40C＋^40Ca和^60Ca＋^40Ca以及^112Sn＋^112Sn和^124Sn＋^124Sn反应中就同位素标度参数α对于核子-核子碰撞截面的同位旋效应进行了研究.计算结果表明α对同位旋相关核子-核子碰撞截面σNN^med（αm）相对于同位旋无关核子-核子碰撞截面σNN^1（αm）的同位旋效应很明显,然而α对σNN^med（αm）相对于同位旋无关核子-核子碰撞截面σNN^2（αm）的同位旋效应是较小的.对以上两种条件下α同位旋效应的机理进行了仔细研究.

英文摘要：

The isospin effects of isoscaling parameter α on the nucleon-nucleon cross section are investigated for two couples of central nuclear reactions ^40C ＋ ^40Ca with ^60Ca ＋ ^40Ca and ^112Sn ＋ ^112Sn with ^124Sn ＋ ^124Sn within an isospin dependent quantum molecular dynamics. It is found that the isospin effect of isoscaling parameter a on the isospin dependent nucleon-nucleon cross σNN^med（ αm ） compared with that on the isospin independent nucleon-nucleon cross sections σNN^1 （αm） is very obvious. section σNN^med（αm） compared with that on the isospin independent nucleon-nucleon cross sections σNN^1 （αm） is very obvious. However, the isospin effect of isoscaling parameter α on σNN^med（αm ） compared with that on the isospin independent nucleonnucleon cross section σNN^2 （ αm ） is small. The mechanisms for the above difference are investigated in detail.

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Improved Quark Mass Density-dependent Model with Quark andσ,ω Meson Fields Coupling
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Gravitational Corrections to Energy-Levels of a Hydrogen Atom
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Improved Quark-Meson Model
Δ Decay Width in Nuclear Matter
Energy-momentum of a 3-brane Model
Angular Momentum of a 3-brane Model
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Analytical solution of multidimensional Langevin equation at high friction limits and probability pa
Collective flow in heavy ion collisions for ???Eb = 0.25 - 1.15 GeV/nucleon,
Probing sigma meson produced in nuclear ??reactions,
Parton dynamics and hadronization from the sQGP，
Differential directed flow of K+ meson within covariant kaon dynamics,
Sigma meson production in nuclear ???reactions
Sigma meson production in heavy ???ion collisions at intermediate energies
Isospin-and-momentum-dependent interaction in isospin-dependent quantum molecular dynamics
Isoscaling Parameter as Possible Probe of Medium Effect of Nucleon-NucleonCross Section
Hadronization in Parton-Hadron-string-Dynamics,
同位旋相关的核子碰撞截面的不同形式与核子的集体流
改进的QMD模型研究不同入射道条件对同位旋分馏强度的影响
核子-核子碰撞截面对同位素标度参数α的介质效应
同位旋依赖的动量相关作用对同位旋分馏的影响随入射道条件的演化
中子晕核引起核反应中的同位旋效应
用中子晕弹核探寻同位旋非对称核物质状态方程
中能重离子碰撞中晕核反应动力学
Isospin- and momentum-dependent interaction in isospin-dependent quantum molecular dynamics
同位旋非对称核物质状态方程
核物质状态方程中动量相关作用可能的探针
从晕中子核引起核反应中提取对称势
Probing the medium effect and isospin dependence of the in-medium nucleon-nucleon cross section in heavy ion collisions
Isospin effects of the Skyrme potential and the momentum dependent interaction at intermediate energy heavy ion collisions
高密核物质中核子的运动对于K介子的等效质量和能量的影响
K介子协变动力学及其准粒子模型的性质
原子实对离子n壳层辐射复合截面的影响
Analytical solution of a multidimensional Langevin equation at high friction limits and probability passing a two-dimensional saddle
同位素分布的标度参量对于两体碰撞的同位旋相关性和动量相关作用的依赖
交换势对光电离截面的影响
期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876