60AGeV^(16)O诱发乳胶核反应α射弹碎片发射研究

Production of Helium Projectile Fragments in ^(16)O-Emulsion Collisions at 60 A GeV

对 60AGeV16 O诱发乳胶核反应射弹α碎片的发射进行了研究 ,得到α射弹碎片多重数分布服从KNO标度无关性 .在边缘作用下 ,α射弹碎片的产生与靶核碎片的产生存在线性关联 ,靶核碎片平均多重数随α射弹碎片数的增加线性减小 ,它可以很好地利用核作用几何模型来解释 .

Production of helium projectile fragments in 16O-emulsion interactions at 60 A GeV is investigated. The total charge changing and partial production cross-sections are measured experimentally on the basis of helium multiplicity. The multiplicity distribution of helium projectile fragments obeys a KNO scaling. In the peripheral collision of 16O at 60 A GeV in nuclear emulsion, the production of target fragments depends on the multiplicity of helium projectile fragments linearly. The averge multiplicity of target fragments decreases with the increasing of the number of helium projectile fragments which can be well expliained by the model of participant-spectator (the nuclear geometric model) of nucleus-nucleus interactions.