Near-threshold electron impact excitation of ultraviolet-emitting levels of neon, argon, krypton and xenon atoms
- 21 December 1977
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 10 (18) , 3781-3796
- https://doi.org/10.1088/0022-3700/10/18/032
Abstract
The excitation by electron impact of levels of neon, argon, krypton and xenon atoms that decay by emission of ultraviolet light has been studied as a function of incident energy up to a few eV above the energies of the lowest excited levels. The width (FWHM) of the energy spread of the incident beam was typically less than 30 meV. A crossed-beam interaction region was used and UV photons emitted approximately normally to the electron and gas beam directions were detected by a channel electron multiplier. Precautions were taken to avoid detection of scattered electrons and metastable atoms by the photon detector. The onset positions of the lowest excited levels were used in calibrating the incident energy scales. The energies of resonance structures in the excitation functions could therefore be obtained, and are compared with the results of previous experiments.Keywords
This publication has 17 references indexed in Scilit:
- Resonance structure in elastic electron scattering from helium, neon and argonJournal of Physics B: Atomic and Molecular Physics, 1977
- The realisation of high energy resolution using the hemispherical electrostatic energy selector in electron impact spectrometryJournal of Physics E: Scientific Instruments, 1977
- Resonant free-free absorption by electrons in the field of neon atomJournal of Physics B: Atomic and Molecular Physics, 1976
- A study of resonance structure in neon, argon, krypton and xenon using metastable excitation by electron impact with high energy resolutionJournal of Physics B: Atomic and Molecular Physics, 1976
- Resonances in optical excitation functionsContemporary Physics, 1976
- Feshbach and Shape Resonances in the-HSystemPhysical Review Letters, 1975
- Structure in near-threshold excitation of kryptonJournal of Physics B: Atomic and Molecular Physics, 1974
- Structure in near threshold electron excitation of argon and neonJournal of Physics B: Atomic and Molecular Physics, 1974
- The 1973 Least-Squares Adjustment of the Fundamental ConstantsJournal of Physical and Chemical Reference Data, 1973
- Resonances in the Total Cross Sections for Metastable Excitation of Noble Gases by Electron ImpactPhysical Review B, 1968