Abstract
A recently developed impact-parameter method is applied to electron-impact dissociation processes involving the A /sup 1/Pi state of HCl. Calculations were performed for initial vibrational levels of the X /sup 1/..sigma../sup +/ state up to v/sub i/ = 2 and for rotational temperatures to 1000 K. The cross sections increase by approximately 50% from v/sub i/ = 0 to v/sub i/ = 2. The dependence on rotational temperature is small except for an anomalous enhancement at 0 K that the theory predicts for Pi states. Since the predicted cross sections are an order of magnitude larger than those for photodissociation, electron-impact dissociation processes will play an important role in lasers involving HCl.
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