Electron impact excitation of the 31P state of helium using the electron-photon angular correlation technique
- 28 May 1988
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 21 (10) , 1879-1886
- https://doi.org/10.1088/0953-4075/21/10/019
Abstract
Excitation of the 31P state of helium by low-energy electrons has been studied by measurement of the angular correlations between the scattered electrons and the 501.6 nm photons emitted in decay to the 21S state. Measurements have been made over a large angular range at incident electron energies of 26.5 and 29.6 eV. Comparisons are made with a very recent 19-state R-matrix calculation and with 21P data previously reported, McAdams et al. (1980), Crowe and Nogueria (1982).Keywords
This publication has 14 references indexed in Scilit:
- A 19-state R-matrix calculation of the electron-photon coincidence parameters lambda and chi for the electron excitation of 11S-21P in helium at low energiesJournal of Physics B: Atomic and Molecular Physics, 1987
- Alignment and orientation in He 21P and 31P excitation by electron impactJournal of Physics B: Atomic and Molecular Physics, 1987
- Electron-polarised-photon coincidence experiments on the 31P state of heliumJournal of Physics B: Atomic and Molecular Physics, 1986
- Principal-quantum-number dependence of coherence and correlation parameters for excitation of helium by electronsPhysical Review A, 1986
- Experimental and theoretical studies of the electron impact alignment and orientation of the 21P state of helium below the ionisation thresholdJournal of Physics B: Atomic and Molecular Physics, 1983
- Low-energy electron impact excitation of the 21P state of heliumJournal of Physics B: Atomic and Molecular Physics, 1982
- Electron-photon coincidence measurements for the excitation of helium 3 1P by intermediate energy electronsPhysics Letters A, 1982
- Angular correlation measurements for the electron-excited 31P state of heliumJournal of Physics B: Atomic and Molecular Physics, 1981
- Electron-photon angular correlations in electron-helium collisions for 31P excitationsJournal of Physics B: Atomic and Molecular Physics, 1975
- Electron-photon angular correlations in electron-helium collisions: measurements of complex excitation amplitudes, atomic orientation and alignmentJournal of Physics B: Atomic and Molecular Physics, 1974