弹核碎裂反应中同位旋效应的系统研究
탄핵쇄렬반응중동위선효응적계통연구
Systematic Behavior of Isospin Effect in Fragmentation Reactions
  • 万方数据
    高能物理与核物理 고능물리여핵물리
    HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS
    2007年 1期 59-64 ,共6页

    方德清%马余刚%马春旺%钟晨%蔡翔舟%陈金根%郭威%苏前敏%田文栋%王鲲%颜廷志%沈文庆

    방덕청%마여강%마춘왕%종신%채상주%진금근%곽위%소전민%전문동%왕곤%안정지%침문경

    统计擦碎模型%弹核碎裂反应%同位旋效应 統計抆碎模型%彈覈碎裂反應%同位鏇效應
    통계찰쇄모형%탄핵쇄렬반응%동위선효응
    statistical abrasion-ablation model%fragmentation reaction%isospin effect
    用统计擦碎模型对中能区不同弹靶体系在弹核碎裂反应中的同位旋效应和同位旋标度率现象进行了系统研究.发现归一的同位素分布峰位差和约化的同位旋标度率参数随(Zproj-Z)/Zproj or(Nproj-N)/Nproj呈指数下降,与反应系统大小无关.指出约化的同位旋标度率参数可以用来研究中能重离子碰撞中反应系统的激发程度和非对称核物质的状态方程.
    용통계찰쇄모형대중능구불동탄파체계재탄핵쇄렬반응중적동위선효응화동위선표도솔현상진행료계통연구.발현귀일적동위소분포봉위차화약화적동위선표도솔삼수수(Zproj-Z)/Zproj or(Nproj-N)/Nproj정지수하강,여반응계통대소무관.지출약화적동위선표도솔삼수가이용래연구중능중리자팽당중반응계통적격발정도화비대칭핵물질적상태방정.
    The isospin effect and isoscaling behaviors in projectile fragmentation reactions have been system atically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak difference and reduced isoscaling parameters are found to decrease with (Zproj -Z)/Zproj or (Nproj- N)/Nproj exponen tially and have no dependence on the size of reaction systems. It is pointed out that the reduced isoscaling parameters can be used as an observable to study excitation extent of system and asymmetric nuclear equation of state in heavy ion collisions.
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