Universal theoretical description of electron impact single ionization process for complex atoms and molecules is a long-standing challenge. A perturbative approach named multicenter three distorted wave method (MCTDW) has recently been developed by our group, aiming at calculating (e, 2e) fully differential cross sections for molecular target. In MCTDW method, the incident, scattered and ejected electrons are described by distorted waves using single center expansion technique. The continuum wave functions of the incident and two outgoing electrons are solved in the potential of neutral molecule and ion, respectively. The accuracy and generality of this method has been demonstrated for water molecule as well as simple two-electron atom helium (2018 Phys. Rev. A 98 042710) . Here MCTDW is extended to investigate more complex multi-electron atom neon of electron impact ionization from its 2p orbital at projectile energy of 100eV and 65eV. The results are compared with the internormalized experiments reported in the literatures (2013 Phys. Rev. Lett. 110 153202; 2015 Phys. Rev. A. 91 032707). An overall agreement has been achieved with experimental data for different scattering angles and energies, as well as theoretical calculations employing nonperturbative B-spline R-matrix with pseudostates approach.

关于复杂原子和分子的电子撞击单个电离过程的通用理论描述是一个长期的挑战。我们的小组最近开发了一种名为多中心三失真波方法（MCTDW）的摄动方法，旨在计算分子靶标的（e，2 e）全微分截面。在MCTDW方法中，使用单中心扩展技术通过扭曲波来描述入射，散射和喷射的电子。分别在中性分子和离子的电势中解决了入射电子和两个输出电子的连续波函数。已经证明了该方法对水分子以及简单的两电子原子氦的准确性和通用性（2018 Phys.Re.A 98 042710）。在此，MCTDW扩展为研究在100eV和65eV的射弹能量下从其2 p轨道的电子碰撞电离的更复杂的多电子原子氖。的结果进行了比较与internormalized实验在文献中报道（2013物理学快报修订版。 110 153202; 2015年物理学版本A。 91 032707）。使用不同散射角和能量的实验数据，以及使用非扰动B样条R矩阵和伪态方法的理论计算，已经达成了总体共识。