Journal ArticleDOI
Principles and procedures for determining absolute differential electron-molecule (atom) scattering cross sections
TLDR
In this article, the absolute elastic and inelastic differential cross sections (DCS) for electron impact on molecular (atomic) species are described and illustrated by examples, and a method of determining absolute differential electron-molecule scattering cross sections is generally applicable and provides reliable results.Abstract:
Procedures and calibration techniques for measuring the absolute elastic and inelastic differential cross sections (DCS) for electron impact on molecular (atomic) species are described and illustrated by examples. The elastic DCS for the molecule under study is first determined by calibration against helium using the relative flow technique. The second step involves the production of energy-loss spectra for the instrument response function, the unfolding of overlapping inelastic structures and the normalization of inelastic intensities to the elastic cross sections. It is concluded that this method of determining absolute differential electron-molecule (atom) scattering cross sections is generally applicable and provides reliable results.read more
Citations
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Journal ArticleDOI
Vibrational excitation of ethane and ethene by electron impact
TL;DR: In this article, cross-beam experiments have been performed to measure differential cross sections (DCSs) for excitation of the vibrational modes associated with the ground electronic states of ethane and ethene.
Journal ArticleDOI
Absolute cross section measurements for the scattering of low- and intermediate-energy electrons from PF3. I. Elastic scattering.
TL;DR: The systematics of the elastic DCSs for the four-atomic trifluoride molecules of XF3 (X = B, N, and P) and central P-atom in PF3 are explored, showing that, owing to the comparatively small effect of the F-atoms, the present angular distributions of elastic DCs are essentially dominated by the characteristic of the central F-atom at lower impact energies.
Journal ArticleDOI
A 19-state R-matrix investigation of resonances in e--He scattering at low energies. IV. 11S-21P differential cross sections and the electron-photon coincidence parameters lambda and mod chi mod
TL;DR: In this article, the same R-matrix calculations are extended to obtain the differential cross sections and the electron-photon coincidence parameters lambda and mod chi mod for the excitation of the ground state helium to the 21P state.
Journal ArticleDOI
Electron interaction with deoxyribose analogue molecules in gaseous phase
TL;DR: In this article, a comparative study of both absolute differential cross sections for elastic electron scattering and electron energy loss spectra, in a wide incident electron energy range from 50 to 300 eV, has been given.
References
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Journal ArticleDOI
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The Threshold Law for Single Ionization of Atoms or Ions by Electrons
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Journal ArticleDOI
Two electrons in a coulomb potential. double-continuum wave functions and threshold law for electron--atom ionization.
TL;DR: In this paper, the Schrodinger equation for two electrons in a Coulomb field is studied in the critical region where both electrons have near-zero kinetic energies, and the main feature of this problem is that the mutual screening between the two electrons determines and is determined by the partition of the available energy between them.
Journal ArticleDOI
Absolute elastic differential electron scattering cross sections for He - A proposed calibration standard from 5 to 200 eV
TL;DR: In this article, the angular distributions for elastically scattered electrons were measured in a crossed-beam geometry using a collimated, differentially pumped atomic-beam source which requires no effective-path-length correction.
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