Electron-photon polarisation correlations in 140 eV electron impact excitation of helium

1986 ◽  
Vol 3 (1) ◽  
pp. 69-72 ◽  
Author(s):  
M. A. Khakoo ◽  
J. W. Mc Conkey
Keyword(s):  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Electron Photon

scholarly journals Orientation of He(21P) by Electron Impact Excitation and Polarization of the Radiative Decay

1982 ◽  
Vol 35 (5) ◽  
pp. 521
Author(s):  
DE Golden ◽  
NC Steph
Keyword(s):  
Excited State ◽  
Electron Impact ◽  
Radiative Decay ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
General Description ◽  
Magnetic Sublevel ◽  
Angular Correlations ◽  
Electron Photon ◽  
Polarization Fraction

A general description of electron-photon angular correlations is given which relates the quantummechanical observables to the structure of the coherently excited state. The wavefunction is expressed in terms of magnetic sublevel amplitudes and state vectors. A semiclassical impact parameter model of orientation is introduced, the experimental considerations are discussed, and experimental results for the orientation and polarization fraction are reviewed.

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