Electron-impact dissociation of molecular hydrogen into neutral fragments

• Published in: The European physical journal. D, Atomic, molecular, and optical physics Vol. 72; no. 2; pp. 1 - 8
• Main Authors: Scarlett, Liam H., Tapley, Jonathan K., Fursa, Dmitry V., Zammit, Mark C., Savage, Jeremy S., Bray, Igor
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-02-2018; Springer Nature B.V
• Subjects: Applications of Nonlinear Dynamics and Chaos Theory; Atomic; Coupling (molecular); Electron impact; Excitation; Fragments; Mathematical analysis; Molecular; Optical and Plasma Physics; Physical Chemistry; Physics; Physics and Astronomy; Quantum Information Technology; Quantum Physics; Regular Article; Spectroscopy/Spectrometry; Spintronics; Topical Issue: Low Energy Positron and Electron Interactions
• ISSN: 1434-6060; 1434-6079
• DOI: 10.1140/epjd/e2017-80649-8

We present convergent close-coupling calculations of electron-impact dissociation of the ground state of molecular hydrogen into neutral fragments over the range of impact energies from 6 to 300 eV. The calculations account for dissociative excitation, excitation radiative decay dissociation, and predissociation through all bound electronic triplet states, and singlet states up to the
D
′
1
Π
u
state. An estimate is given for the contribution from the remaining bound electronic singlet states. Our results are in agreement with the recommended data of Yoon et al. [J. Phys. Chem. Ref. Data
37
, 913 (2008)] in the low (6–12 eV) and high (60–70 eV) energy regions, but somewhat lower at the intermediate energies.
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