10.7AGeV^(197)Au诱发乳胶核反应射弹碎片平均自由程研究  

Interactions Mean Free Paths of Projectile Fragments from ^(197)Au-emulsion Collisions at 10.7 A GeV

作　　者：王琦[1] 张东海[2] 

机构地区：[1]临汾职业技术学院,山西临汾041000 [2]山西师范大学现代物理研究所,山西临汾041004

出　　处：《山西师范大学学报（自然科学版）》2009年第2期47-50,共4页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10475054);教育部科学研究重点基金资助项目(205026)

摘　　要：本文对10.7 AGeV197Au诱发乳胶核反应射弹碎片平均自由程进行了研究,结果表明射弹碎片的平均自由程在实验误差范围内与距射弹作用点的距离D无关,射弹碎片的平均自由程不存在反常现象.对于α射弹碎片平均自由程,实验发现在实验误差范围内与距射弹作用点的距离D、碰撞参数b、射弹α碎片多重数无明显的依赖关系,以上结论也可以通过I Otterlund等人提出的检验方法得到进一步证实.The interactions mean free paths of projectile fragments from 197 Au-emulsion colhsions at 10.7 A GeV are investigated. It is found that the interaction mean free path of projectile fragments is not dependent on the distance from their production point within experimental errors. No anomalous phenomena exist in mean free paths of projectile fragments. The mean free path of helium projectile fragments does not depend on the distance D from their producing point, the impact parameters b and helium projectile fragments multiplicities within experimental errors, which can be further confirmed by the method suggested by I Otterlund.

关 键 词：相对论重粒子碰撞 核乳胶 射弹碎片 平均自由程 

分 类 号：O571.41[理学—粒子物理与原子核物理]