主要讨论了电子与离子碰撞电离速率系数的计算，给出了快速拟合计算公式。
The computation on the rate coefficient of electron ion collisional ionization is described and some fitting formulas are given for the accurate and fast calculation.
电子碰撞过程可将靶原子或离子激发至无数的束缚态、自电离态和对应的连续态，多通道量子数亏损理论能够统一地处理这些激发态。
The target atom or ion may be excited to infinite bound states, auto-ionizing states and adjoint continuum states which can be treated in an unified manner by Multichannel Quantum Defect Theory.
结果表明，等离子体的产生是由于电子束对氦原子的碰撞电离及其雪崩效应引起的。
The generation mechanism of the plasma and its effects on the output microwave are analyzed.
阴极发射出电子用以加热栅极并和产生的可电离气体原子相碰撞来产生离子。
A cathode emits electrons to heat the grid and to collide with produced ionizable gas atoms to generate ions.
负离子与原子碰撞的单电子脱附过程是普遍存在于等离子体物理、天体物理、电离层物理学中的重要过程。
The single electron detachment of negative ions in collision with atoms is known to be one of the most fundamental processes occurring in plasma physics, astrophysics, and ionospheric physics.
由于涉及多种过程（包括入射离子与靶粒子的碰撞激发、电离、电荷转移等）及大的能量范围，我们采用多种方法联合处理这些过程。
The cross sections of excitation, ionization and charge transfer processes are obtained for energies between a few meV/u and MeV/u.
由于涉及多种过程（包括入射离子与靶粒子的碰撞激发、电离、电荷转移等）及大的能量范围，我们采用多种方法联合处理这些过程。
The cross sections of excitation, ionization and charge transfer processes are obtained for energies between a few meV/u and MeV/u.
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