<正> By combining the B-spline basis set with model potential (B-spline + MP),we present oscillator strengthspectra of Rydberg Li atoms in external fields.The p
<正> A dynamical Langevin model is employed to evaluate the excess of the neutron emission in the fission ofheavy nuclei ~(240)Cf,~(246)Cf,~(254)Cf,~(240)U rela
<正> By means of the classical symmetry method,we investigate two types of the(2+1)-dimensional nonlinearKlein-Gorden equation.For the wave equation,we give out