Recommended Data on Proton-Ion Collision Rate Coefficients for Fe X - Fe XV Ions

The proton-ion collisions are important for excitation of some ion levels in a high-temperature low density plasma. In the present work evaluation of data obtained for proton-induced transitions in Fe X - Fe XV ions with the help of different theoretical methods is carried out. It is suggested a simple analytical formula with 7 parameters allowing to describe dependency of proton rate coefficient on proton temperature in an enough wide temperature range. The values of free parameters have been determined by fitting of approximation formula to numerical data and are presented for recommended data together with fitting accuracies. By comparing of proton collision rates with electron ones it is shown that proton impact excitation processes may be important for Fe X, XI, XIII-XV ions. The results obtained can be used for plasma kinetics calculations and for development of spectroscopy methods of plasma diagnostics.

质子-离子碰撞对于激发高温低密度等离子体中某些离子能级具有重要意义。在本次研究中，通过运用多种理论方法对质子诱导Fe X - Fe XV离子跃迁所获得的数据进行了评估。提出了一种包含7个参数的简单分析公式，能够描述质子速率系数随质子温度变化的依赖关系，该公式适用于足够宽的温度范围。通过将近似公式拟合至数值数据，确定了自由参数的值，并连同拟合精度一起，为推荐数据提供了详细说明。通过将质子碰撞率与电子碰撞率进行比较，揭示了质子撞击激发过程对于Fe X、XI、XIII-XV离子可能具有重要意义。所得结果可用于等离子体动力学计算以及等离子体诊断光谱方法的开发。