scholarly journals The Triple Coincidence Detection of the Helium 31D State Decay

1996 ◽  
Vol 49 (2) ◽  
pp. 375 ◽  
Author(s):  
AG Mikosza ◽  
JF Williams
Keyword(s):  
Energy Loss ◽  
Experimental Method ◽  
Coincidence Detection ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Triple Coincidence ◽  
Scattered Energy ◽  
Experimental Step ◽  
Initial Results

The first triple coincidence detection of the scattered energy loss electron and the sequential cascading photons, 667�8 nm 31 D → 21P and 58�4 nm 21P → 11S, from the electron impact excitation of the 31D state of helium is reported. An experimental method for identification and determination of the triple coincidences and initial results is reported. The measurement is the final experimental step in determining all the information to define completely the excited 3D state.

Electron-impact excitation of multiply-charged ions using energy loss in merged beams: e+Si3+ (3s2S1/2) ? e+Si3+ (3p2P1/2, 3/2)

1991 ◽  
Vol 21 (S1) ◽  
pp. S35-S38
Author(s):  
E. K. W�hlin ◽  
J. S. Thompson ◽  
G. H. Dunn ◽  
R. A. Phaneuf ◽  
D. C. Gregory ◽  
...  
Keyword(s):  
Energy Loss ◽  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Multiply Charged Ions ◽  
Multiply Charged ◽  
Charged Ions

Electron‐impact excitation of UF6 at an electron energy of 20 eV in the energy‐loss range of 0–10 eV

1976 ◽  
Vol 64 (11) ◽  
pp. 4791-4793 ◽  
Author(s):  
A. Chutjian ◽  
S. K. Srivastava ◽  
S. Trajmar ◽  
W. Williams ◽  
D. C. Cartwright
Keyword(s):  
Energy Loss ◽  
Electron Impact ◽  
Electron Energy ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Loss Range

Review of advances in describing the 31D-state excitation of helium

1996 ◽  
Vol 74 (11-12) ◽  
pp. 906-913
Author(s):  
J. F. Williams ◽  
A. G. Mikosza ◽  
J. B. Wang
Keyword(s):  
Scattering Amplitudes ◽  
Partial Cross Section ◽  
Stokes Parameters ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Scattered Electron ◽  
Close Coupling ◽  
Natural Frame ◽  
Electron Photon

Recent advances in describing the electron impact excitation of the 31D state of helium are reported for an incident energy of 40 eV and scattering angles from 10° to 40°. Measurements of the Stokes parameters have been made using the polarized photon–photon and electron–photon coincidence techniques. The partial cross section σm for the magnetic sublevels in the collision frame indicate that the m = 0 excitation is favoured. For the above scattering kinematics the data are in agreement with convergent close coupling calculations. The deduced scattering amplitudes, in the natural frame, show that the m = 2 excitation becomes dominant at the larger angles. Progress is reported on the complete determination of the scattering amplitudes and their relative phases using the triple-coincident detection of the scattered electron with the two sequential cascading photons.

scholarly journals Flux limiting due to electron impact excitation energy loss

1996 ◽  
Vol 3 (2) ◽  
pp. 461-467 ◽  
Author(s):  
Peter J. Catto ◽  
Sergei Krasheninnikov ◽  
R. D. Hazeltine
Keyword(s):  
Energy Loss ◽  
Excitation Energy ◽  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Flux Limiting
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