In the framework of relativistic quantum hadron dynamical theory,under semiclassical approximation and taking the vacuum fluctuation into account,a relativistic Vlasov equation(RVE)has been derived.Using RVE and consi...In the framework of relativistic quantum hadron dynamical theory,under semiclassical approximation and taking the vacuum fluctuation into account,a relativistic Vlasov equation(RVE)has been derived.Using RVE and considering other relativistic effects,we have studied the isovector dipole giant resonances built on ground state in spherical nuclei.The main results shown that the resonance energies for each multipole are larger than those obtained from the non-relativistic classical Vlasov approach.But by means of choosing a reasonable symmetry potential as 100MeV,the relativistic results can fit the experimental results very well.展开更多
The quadrupole excitations in nucleus 11Li have been studied within the nuclear Vlasov equation approach.The classical phase space distribution function is given by the test particle propagation method.A soft mode of ...The quadrupole excitations in nucleus 11Li have been studied within the nuclear Vlasov equation approach.The classical phase space distribution function is given by the test particle propagation method.A soft mode of quadrupole excitation located around 2MeV is found.The total percentage of E2 energy-weighted sum rule exhausted in this soft resonance region is very sensitive to the extension of neutron halo in nucleus 11Li.The results compared with other recent calculations are analyzed.展开更多
基金Supported in part by the National Nature Science Foundation of China under Contract No.19275058the Grant LWTZ-1298 of Chincsc Academy of Science.
文摘In the framework of relativistic quantum hadron dynamical theory,under semiclassical approximation and taking the vacuum fluctuation into account,a relativistic Vlasov equation(RVE)has been derived.Using RVE and considering other relativistic effects,we have studied the isovector dipole giant resonances built on ground state in spherical nuclei.The main results shown that the resonance energies for each multipole are larger than those obtained from the non-relativistic classical Vlasov approach.But by means of choosing a reasonable symmetry potential as 100MeV,the relativistic results can fit the experimental results very well.
基金Supported in part by the National Natural Science Foundation of China,and the Grant LWTZ-1298 of Chinese Academy of Sciences.
文摘The quadrupole excitations in nucleus 11Li have been studied within the nuclear Vlasov equation approach.The classical phase space distribution function is given by the test particle propagation method.A soft mode of quadrupole excitation located around 2MeV is found.The total percentage of E2 energy-weighted sum rule exhausted in this soft resonance region is very sensitive to the extension of neutron halo in nucleus 11Li.The results compared with other recent calculations are analyzed.
