A scaling phenomenon for the cross section of fragment produced in projectile fragmentatio

A scaling phenomenon for the cross section of fragment produced in projectile fragmentation

reactions

Yi-Dan Song[1]; Hui-Ling Wei[1]; Chun-Wang Ma[1]

【期刊名称】《《中国科学》》 【年(卷),期】2024(062)009

【摘要】A scaling phenomenon has been found for the cross section of a fragment, which is defined as a \cross section(SCS).This phenomenon can unify the cross sections of fragments in projectile fragmentation(PF) reactions. An empirical formula is proposed to calculate SCSfor a fragment with parameters determined by an extensive investigation of measured reactions ranging from Fermi energies to relativistic energies. The scaling phenomenon of SCShas been verified using different techniques,showing that the scaling of SCSgenerally exists in PF reactions. The concept of SCS, which can be assumed as a standard value for a fragment, is shown to accurately predict the cross sections of isotopes in PF reactions with incident energies ranging from tens of A MeV to approximately 1000 A MeV. 【总页数】10页(P.60-69)

【关键词】scaling phenomenon; cross section prediction; intermediate mass fragments; projectile fragmentation

【作者】Yi-Dan Song[1]; Hui-Ling Wei[1]; Chun-Wang Ma[1]