Collisional De-Excitation Cross-Section Measurement of Electronic States of Atomic and Molecular Hydrogen by Collision with Molecular Hydrogen

The H(alpha), H(beta), and H(gamma) lines of the Balmer series of atomic hydrogen and the G singlet Sigma (g)(+) to B singlet Sigma (u)(+) molecular hydrogen system were produced by 40-kev electron beam excitation of molecular hydrogen at room temperature. The collisional de-excitation cross section of the above-mentioned excited electronic states in collision with H2 X singlet Sigma (g)(+) was measured.
Prepared in cooperation with ARO, Inc., Tullahoma, Tenn. Rept. no. ARO-VKF-TR-72-89.