In this paper, a fivefold differential cross section(FDCS) for electron impact double ionization of helium is calculated in the case of high incident energy(E 05.6 keV) and low ejection energies(E 1=E 2=10 eV).

• 完成了高入射能 (E0 5 .；6keV)；低敲出能 (E1=E2 =10eV)情形下；电子入射双电离He原子五重微分截面 (FDCS)的理论计算。