Abstract
The intensities of lines I Q(1) and I Q(3) of the vibrational transition v′ = 0 → v″ = 0 of the Fulcher band system upon excitation of hydrogen molecules by an electron beam are measured. The beamelectron energy is ɛ e = 15…30 eV (Δɛ e ∼ 1 eV). The effective cross sections of H2 (d 3Π u , v = 0) state excitation by electron impact are estimated both without changing themolecule angular momentum and with an appreciable angular momentum transfer. Processes with an appreciable angular momentum transfer are most efficient in the subthreshold excitation energy range (E thr = 14 eV < E e ≤ 18 eV) and are related to the formation of an intermediate composite system, i.e., a negative ion in the quasi-discrete state.
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Original Russian Text © S.N. Andreev, V.N. Ochkin, S.Yu. Savinov, S.N. Tskhai, 2014, published in Kratkie Soobshcheniya po Fizike, 2014, Vol. 41, No. 12, pp. 19–25.
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Andreev, S.N., Ochkin, V.N., Savinov, S.Y. et al. On the angular momentum transfer upon excitation of electronic states of molecules by electrons of various energies. Bull. Lebedev Phys. Inst. 41, 355–358 (2014). https://doi.org/10.3103/S1068335614120045
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DOI: https://doi.org/10.3103/S1068335614120045