Electron impact excitation cross sections into (3p)$^{5}$5p levels from the (3p)$^{5}$4s metastable level of Ar by the Kim B-E-f Scaling method.

We present results for electron impact excitation cross sections from (3p)$^{5}$4s,1s$_{5}$ and 1s$_{3}$ metastable states of Ar to (3p)$^{5}$5p, 3p$_{1}$ to 3p$_{10}$ states, which are dipole allowed by the use of the Kim B-E-f Scaling procedure [1]. We use the experimental excitation energy for E-scaling and accurate f values of Zatsarinny and Bartschart [2] for f- scaling. We compare our results with apparent excitation cross sections recently reported by Jung et al. [3]. Our results suggest that cascade contributions for the upper levels are substantial. To gauge the accuracy of B-E-f scaling, we also present similar results for (3p)$^{5}$4s, 1s$_{5}$ and 1s$_{3}$ metastable states to (3p)$^{5}$4p, 2p$_{1}$ to 2p$_{10}$, dipole allowed states and compare with the distorted wave results of Srivastava et al. [4]. \newline [1] Y-K. Kim, Phys. Rev. A 64 032713 (2001). [2] O. Zatsarinny and K. Bartschart J. Phys. B: At. Mol. Phys. 39 2145 (2006). [3] R. O. Jung, J. B. Boffard, L. W. Anderson, and C. C. Lin Phys. Rev. A 75 052707 (2007). [4]R. Srivastava, A. D. Stauffer, and L. Sharma Phys. Rev. A 74 012715 (2006).