摘要
采用扭曲波玻恩交换近似方法,在自由原子模型下计算了电子与离子碰撞激发、电离截面,计算值与实验一致;在含温有界平均原子模型下,系统研究了不同温度、密度等离子体中离子的电子碰撞直接电离截面,发现由于温度、密度效应导致离子的能级漂移,引起等离子体中离子的碰撞电离截面比自由原子情形发生较大变化.
By using a distorted-wave Born exchange approximation method in averaged-atomic model, we calculated the direct excitation and direct ionization cross sections of several ions in plasmas. The ionization cross sections of ions at different temperatures or different plasma densities are systematically studied. It is found that due to the shift of the energy levels produced by the effects of the temperature and the density of plasma, the ionization cross sections of ions in plasmas are rather different from those of free atoms.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第10期4673-4679,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号:10174010)
冲击波物理与爆轰物理国防科技重点实验室基金(批准号:51478030203ZW0902)资助的课题.~~
