Double Excitation of Helium by Electron Impact

1964 ◽  
Vol 136 (1A) ◽  
pp. A73-A86 ◽  
Author(s):  
Philip M. Becker ◽  
John S. Dahler
Keyword(s):  
Electron Impact ◽  
Double Excitation

Electron-impact helium double excitation within the S-wave model

2004 ◽  
Vol 37 (18) ◽  
pp. 3711-3721 ◽  
Author(s):  
C Plottke ◽  
P Nicol ◽  
I Bray ◽  
D V Fursa ◽  
A T Stelbovics
Keyword(s):  
Electron Impact ◽  
Wave Model ◽  
S Wave ◽  
Double Excitation

Double excitation in Li and Be by electron impact: A distorted-wave approach

1987 ◽  
Vol 35 (1) ◽  
pp. 103-108 ◽  
Author(s):  
R. Srivastava ◽  
W. Williamson Jr.
Keyword(s):  
Electron Impact ◽  
Distorted Wave ◽  
Double Excitation ◽  
Wave Approach

Studies of autoionization with (e,2e) spectroscopy

1996 ◽  
Vol 74 (11-12) ◽  
pp. 736-742 ◽  
Author(s):  
Albert Crowe ◽  
Denis G. McDonald ◽  
Shouna E. Martin ◽  
Vsevolod V. Balashov
Keyword(s):  
Experimental Data ◽  
Electron Impact ◽  
Atomic Structure ◽  
Resonance Excitation ◽  
Resonance Ionization ◽  
Resonance States ◽  
Double Excitation ◽  
Electron Spectra ◽  
Theoretical Approaches ◽  
Rigorous Test

Recent advances in the study of double excitation-autoionization processes in helium using the (e,2e) technique are reviewed. Experiments at Flinders (Australia) and Newcastle (UK) provide the first reliable experimental data and have provoked the development of new theoretical approaches to the problem. Comparisons with recent calculations of the coincident electron spectra and parameters characterising the resonance states are presented for different kinematic conditions. Since the resonance parameters contain complex amplitudes relating to the resonance excitation, and direct and resonance ionization, they are extremely sensitive to the dynamics of the reaction and the atomic structure. Hence they provide the most rigorous test of the theory of ionization by electron impact.

The Double Excitation of Helium by Electron Impact

1935 ◽  
Vol 31 (4) ◽  
pp. 604-608 ◽  
Author(s):  
H. S. W. Massey ◽  
C. B. O. Mohr
Keyword(s):  
Electron Impact ◽  
Qualitative Agreement ◽  
Quantitative Agreement ◽  
Experimental Results ◽  
Angular Distributions ◽  
Double Excitation ◽  
Doubly Excited

The probability of excitation of helium by electron impact to the more important doubly excited levels is calculated, and comparison made with the experimental results of Priestley and Whiddington who have observed two lines due to double excitation. The calculated relative intensities and angular distributions are found to be in qualitative agreement with experiment, and reasons are given for the lack of quantitative agreement.

scholarly journals Double excitation cross sections of molecular hydrogen induced by electron impact

2014 ◽  
Vol 488 (5) ◽  
pp. 052015
Author(s):  
L O Santos ◽  
R F Nascimento ◽  
N V de Castro Faria ◽  
Ginette Jalbert
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Molecular Hydrogen ◽  
Double Excitation ◽  
Excitation Cross Sections
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