-By using the improved quantum molecular dynamics(IQMD),we have stu-died the influences of items such as the nucleon-nucleon(N-N)collision cross sectionwith or without the medium effect,the momentum dependent interact...-By using the improved quantum molecular dynamics(IQMD),we have stu-died the influences of items such as the nucleon-nucleon(N-N)collision cross sectionwith or without the medium effect,the momentum dependent interactions(MDI),theequation of state(EOS)and the aggregating method for fragments on the multifrag-mentation process of heavy ion collisions with different beam energies.It is found thatmultifragmentation distribution patterns,the collective flows of fragments and singleparticles,the collision number,and the nuclear matter density all depend strongly on theN-N cross section,the momentum dependent interactions and the nuclear equation ofstate;especially,these dependences are associated with beam energies.However,thefragment multiplicity distribution patterns depend very weakly on the equation of state.展开更多
基金The project supported by National Natural Science Foundation of ChinaScience Foundation of Academia Sinica.
文摘-By using the improved quantum molecular dynamics(IQMD),we have stu-died the influences of items such as the nucleon-nucleon(N-N)collision cross sectionwith or without the medium effect,the momentum dependent interactions(MDI),theequation of state(EOS)and the aggregating method for fragments on the multifrag-mentation process of heavy ion collisions with different beam energies.It is found thatmultifragmentation distribution patterns,the collective flows of fragments and singleparticles,the collision number,and the nuclear matter density all depend strongly on theN-N cross section,the momentum dependent interactions and the nuclear equation ofstate;especially,these dependences are associated with beam energies.However,thefragment multiplicity distribution patterns depend very weakly on the equation of state.
