Quantum molecular dynamics (QMD) is used to investigate multifragmentation resulting from an expanding nuclear matter. Equation of state, the structure of nuclear matter and symmetric nu-clear matter is discussed. Als...Quantum molecular dynamics (QMD) is used to investigate multifragmentation resulting from an expanding nuclear matter. Equation of state, the structure of nuclear matter and symmetric nu-clear matter is discussed. Also, the dependence of the fragment mass distribution on the initial temperature (Tinit) and the radial flow velocity (h) is studied. When h is large, the distribution shows exponential shape, whereas for small h, it obeys the exponentially falling distribution with mass number. The cluster formation in an expanding system is found to be different from the one in a thermally equilibrated system. The used Hamiltonian has a classical kinetic energy term and an effective potential term composed of four parts.展开更多
The experimental results of complete charge distribution of projectile fragments (PFS) and the total charge of the projectile fragments (PFS ) are presented. Also the multiplicity distributions of (PFS) and the rapidi...The experimental results of complete charge distribution of projectile fragments (PFS) and the total charge of the projectile fragments (PFS ) are presented. Also the multiplicity distributions of (PFS) and the rapidity distribution of shower tracks produced from events with nh = 0 from 28Si with emulsion at 4.5 A GeV /c are obtained.展开更多
The main experimental characteristics (multiplicity characteristics) of secondary particles have been investigated in interactions of <sup>28</sup>Si with emulsion at 4.5 GeV/c per nucleon at rest of emuls...The main experimental characteristics (multiplicity characteristics) of secondary particles have been investigated in interactions of <sup>28</sup>Si with emulsion at 4.5 GeV/c per nucleon at rest of emulsion, nuclei. The complete destruction of the heavy target nuclei (Ag, Br) has been studied. The average of shower particles is weakly dependent on the target mass whereas the average multiplicity of grey particles is strongly dependent on it. The correlations between the multiplicities of the charged secondaries at different mass number of the projectile and center-of-mass-available energy are investigated.展开更多
文摘Quantum molecular dynamics (QMD) is used to investigate multifragmentation resulting from an expanding nuclear matter. Equation of state, the structure of nuclear matter and symmetric nu-clear matter is discussed. Also, the dependence of the fragment mass distribution on the initial temperature (Tinit) and the radial flow velocity (h) is studied. When h is large, the distribution shows exponential shape, whereas for small h, it obeys the exponentially falling distribution with mass number. The cluster formation in an expanding system is found to be different from the one in a thermally equilibrated system. The used Hamiltonian has a classical kinetic energy term and an effective potential term composed of four parts.
文摘The experimental results of complete charge distribution of projectile fragments (PFS) and the total charge of the projectile fragments (PFS ) are presented. Also the multiplicity distributions of (PFS) and the rapidity distribution of shower tracks produced from events with nh = 0 from 28Si with emulsion at 4.5 A GeV /c are obtained.
文摘The main experimental characteristics (multiplicity characteristics) of secondary particles have been investigated in interactions of <sup>28</sup>Si with emulsion at 4.5 GeV/c per nucleon at rest of emulsion, nuclei. The complete destruction of the heavy target nuclei (Ag, Br) has been studied. The average of shower particles is weakly dependent on the target mass whereas the average multiplicity of grey particles is strongly dependent on it. The correlations between the multiplicities of the charged secondaries at different mass number of the projectile and center-of-mass-available energy are investigated.
