摘要
利用Ｂｅｒａｋｄａｒ理论，考虑了入射道的库仑相互作用，在共面双对称碰撞几何中，计算了能量为２５１ｅＶ入射电子碰撞Ｌｉ＋（１ｓ２）（ｅ，２ｅ）反应的三重微分截面（ＴＤＣＳ），讨论了不同散射振幅对截面的贡献，分析了干涉效应及入射道库仑场对截面的影响．结果表明，它们对决定ＴＤＣＳ的角度分布和大小起着重要作用．
Abstract Based on the Berakdar theory,this work
investigates theoretically the triply differential cross sections for electron impact ionization of Li
+(1s 2) at an energy of 100eV in coplanar doubly symmetric geometry,i.e.,equal energies and
equal emission angles for the two electrons in the final state.Dominant ionization mechanisms
are identified and the contribution of different scattering amplitudes and the major role of initial
channel Coulomb field are discussed.It turns out that the cross section in doubly symmetric
geometry is strongly influenced by the interference of these amplitudes and the initial channel
Coulomb field.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第4期629-632,共4页
Acta Physica Sinica
