CLASSICAL-PATH CALCULATION OF S-MATRICES FOR STARK BROADENING OF LYMAN-ALPHA LINE

The S matrices for Stark broadening of the n=1 and n=2 levels of hydrogen based on the straight-line classical-path model are calculated numerically. The interaction terms (excluding exchange) are included to all orders, and time ordering of the operators in the S matrix is retained. The resultant values for the impact-broadening operator Φ are presented. These results are compared with previous approximations based on the same model. The effect of the present calculations on the center and near wings of the Lyman-α line profile is considered. © 1969 The American Physical Society.