Electron impact excitation of Ge-like (Xe 22+ ) to Cu-like (Xe 25+ ) highly charged xenon ions are studied and dipole allowed fine-structure transitions in the wavelength range 9–25 nm are considered. We use relativistic distorted wave method to calculate the electron excitation cross sections for the different transitions of the four ions in the scattered electron energy range from excitation threshold to 1500 eV. The ionic bound state wavefunctions have been obtained using multi-configuration Dirac–Fock method. To ascertain the accuracy of the wavefunctions, the wavelengths and oscillator strengths of the considered transitions in these ions are calculated and compared with the previously reported measurements and other theoretical calculations, where available. For plasma diagnostic applications, the obtained cross sections are further used to calculate the rate coefficients of the transitions as well as fitted with an analytical expression which can be used...

中文翻译：

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极紫外条件下Ge样向Cu形氙离子的电子碰撞激发

研究了Ge（Xe 22+）到Cu（Xe 25+）高电荷氙离子的电子碰撞激发，并考虑了在9–25 nm波长范围内偶极允许的精细结构转变。我们使用相对论畸变波方法来计算从激发阈值到1500 eV的散射电子能量范围内四种离子在不同跃迁下的电子激发截面。离子束缚态波函数已使用多配置狄拉克-福克方法获得。为了确定波函数的准确性，计算了这些离子中考虑的跃迁的波长和振荡器强度，并将其与先前报告的测量值和其他可用的理论计算进行了比较。对于血浆诊断应用，