Cross Sections for Ionization of K- and L-Shells by Electrons

A. The following formulae will give K- and L-shell ionization cross sections with an accuracy indicated in Part B. Q i ( in   cm 2 ) = 7.92 × 10 − 20 C i V i V In V V i https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203742433/53e9912e-dfc3-42b1-91b1-4eaf447a0f76/content/eq4.tif"/>