scholarly journals Electron-Photon Coincidence Studies in Sodium

1982 ◽  
Vol 35 (5) ◽  
pp. 501 ◽  
Author(s):  
PJO Teubner ◽  
JE Furst ◽  
JL Riley
Keyword(s):  
Excited State ◽  
Hyperfine Structure ◽  
Relative Sensitivity ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Quantum Beats ◽  
Zero Field ◽  
Scattering Parameters ◽  
Beat Pattern ◽  
Electron Photon

Three techniques are described from which the scattering parameters A and X can be measured in electron-photon coincidence studies of the 32P state of sodium. The relative sensitivity of the angular correlation and polarized photon techniques is discussed for states which have significant hyperfine structure in the excited state. The phenomenon of zero field quantum beats is described in the framework of the electron impact excitation of sodium. It is shown that the amplitude of the beat pattern depends on the parameter it. The use of the beat pattern to determine A is discussed.

Zero-Field Quantum Beats in the Electron-Impact Excitation of Sodium

1981 ◽  
Vol 46 (24) ◽  
pp. 1569-1571 ◽  
Author(s):  
P. J. O. Teubner ◽  
J. E. Furst ◽  
M. C. Tonkin ◽  
S. J. Buckman
Keyword(s):  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Quantum Beats ◽  
Zero Field

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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