Investigation of isotope composition of nuclear fragments with angular momentum and Coulomb effects in peripheral ^(84)Kr+ ^(112,124)Sn collisons at 35 A MeV  

作　　者：Nihal Buyukcizmeci Aysegul Ergun Hamide Imal Riza Ogul Alexander S Botvina 

机构地区：[1]Department of Physics,University of Seluk [2]Institute for Nuclear Research,Russian Academy of Sciences [3]Frankfurt Institute for Advanced Studies,J.W. Goethe University

出　　处：《Nuclear Science and Techniques》2015年第2期111-116,共6页核技术（英文）

基　　金：Supported by Turkish Scientific and Technical Research Council(No.113F058);Scientific Research Coordination of Selcuk University(BAP)(No.SU-2014/14701490);Helmholtz International Center for FAIR(LOEWE program)

摘　　要：New theoretical calculations are performed to investigate the Coulomb proximity and angular momentum effects on multifragmentation picture for84Kr+112,124 Sn collisions at an incident beam energy of 35 Me V/nucleon.Charge and isotopic distributions and the mean neutron-to-proton ratios of the fragments are reproduced within the microcanonical Markov chain calculations on the basis of Statistical Multifragmentation Model. It is shown that the Coulomb interactions and angular momentum effects are very important to reproduce isotopic composition of nuclear fragments in peripheral heavy-ion collisions at Fermi energies. Our results imply that it is possible to investigate in laboratories the modification of structure parameters of fragments, such as the symmetry energy coefficient, at subnuclear densities in dense environment of other species.New theoretical calculations are performed to investigate the Coulomb proximity and angular momentum effects on multifragmentation picture for^84Kr＋^112,124 Sn collisions at an incident beam energy of 35 Me V/nucleon.Charge and isotopic distributions and the mean neutron-to-proton ratios of the fragments are reproduced within the microcanonical Markov chain calculations on the basis of Statistical Multifragmentation Model. It is shown that the Coulomb interactions and angular momentum effects are very important to reproduce isotopic composition of nuclear fragments in peripheral heavy-ion collisions at Fermi energies. Our results imply that it is possible to investigate in laboratories the modification of structure parameters of fragments, such as the symmetry energy coefficient, at subnuclear densities in dense environment of other species.

关 键 词：同位素组成 库仑作用 角动量 核碎片 MEV 重离子碰撞 库仑相互作用 多重碎裂 

分 类 号：O562.6[理学—原子与分子物理]