Cross sections and rate coeffcients of electron impact ionization of Alq+(q = 1~12)

The DWBE method has been used to calculate the cross sections and of electron impact ionization of Alq+(q=1-12). We have related the scaled cross sections to the Bethe coefficients at high energy regime. The latter can be obtained by integral of cross section of photoionization. These cross sections are then fit to obtain corresponding rate coefficients. According to our calculations, the scaled cross sections vary slowly as the charge state change. Our results are in good agreement with those of experiment and other theoretical calculations.