Differential scattering experiments for e-H2S collisions in the low-energy range
- 14 December 1978
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 11 (23) , 4109-4117
- https://doi.org/10.1088/0022-3700/11/23/019
Abstract
Vibrationally elastic ( Delta v=0) scattering and vibrational excitation of H2S by electron impact has been studied for collision energies up to 10 eV in a closed-beam experiment. In the vibrationally elastic scattering the cross sections show pronounced forward scattering and a steep increase towards small energies, characterising the influence of the direct dipole process. In contrast, the vibrational excitation is clearly dominated by resonance processes. The excitation function exhibits a narrow peak close to threshold, which is attributed to the final-state interaction of the scattering electron in the dipole field and a strong shape resonance at about 2.3 eV of 2A1 symmetry. In the shape resonance the absolute value of the total integral cross section for vibrational excitation has been found to exceed 10-15 cm2, which is about 30% of the vibrationally elastic one.Keywords
This publication has 16 references indexed in Scilit:
- Threshold behaviour of polar molecule vibrational excitations by electron impactChemical Physics Letters, 1977
- Vibrational Excitation of Polar Molecules by Slow Electrons: HCIPhysical Review Letters, 1977
- Resonant electron-molecule scattering: The impulse approximation inOPhysical Review A, 1975
- Experimental investigation and phase shift analysis of low-energy electron-helium scatteringJournal of Physics B: Atomic and Molecular Physics, 1975
- Electron-Impact Vibrational Excitation of H2OJournal of the Physics Society Japan, 1974
- Formation of HS− and DS− by Dissociative Attachment in H2S, HDS, and D2SThe Journal of Chemical Physics, 1972
- Vibrational excitation of N2by resonance scattering of electronsJournal of Physics B: Atomic and Molecular Physics, 1971
- Negative Ionen durch Elektronenstoß an einigen organischen SchwefelverbindungenZeitschrift für Naturforschung A, 1966
- Bestimmung kritischer Elektronenenergien für die Bildung negativer Ionen bei Elektronenstoß mittels einer RPD-MethodeZeitschrift für Naturforschung A, 1961
- Infrared Spectrum of Hydrogen SulfideThe Journal of Chemical Physics, 1956