Sc^（18＋）电子碰撞激发截面和速率系数

Excitation Cross Sectios and Rate Coefficients of Se￣(18+)

在Ｚ标度类氢模型下，用Ｃｏｕｌｏｍｂ－Ｂｏｒｎ交换近似计算“水窗”波段Ｓｃ￣（１８＋）离子精细结构能级的电子碰撞激发截面和速率系数，计算过程中对有效核电荷的计算作了修改，使其更有效地反映碰撞过程中电子的关联和相对论效应。

Under the Z-scaled hydrogenic approximat ion the excitation cross sections and rate coeffi-cients between fine-structure levels in water window of Sc￣(18+)were calculated using Coulomb- Born-ex-changed method.In the computation ,the effective iiuclear charges were modified so that the correla-tion corrections and relativistic effects were taken into account more effectively.