The rotational excitation of molecular hydrogen by slow electrons

1965 ◽  
Vol 85 (4) ◽  
pp. 679-684 ◽  
Author(s):  
A Dalgarno ◽  
R J W Henry

The scattering formalism of Arthurs & Dalgarno (1960) is generalized to take account of exchange (but not polarization) in the scattering of slow electrons by molecular hydrogen. The use of a single-centre molecular wavefunction is discussed, and representative calcula­tions of the j = 0→ j = 2 rotational excitation cross-section are carried out in the distorted wave approximation. The inclusion of exchange results in a significant increase (rising from 12% at 0.1 eV to over 70% at 0.5 eV) in the dominant ( p -wave) contribution to the cross-section. It is concluded that exchange effects cannot be ignored in the theoretical discussion of electron energy loss by rotational excitation in swarm experiments.


2004 ◽  
Vol 400 (1-3) ◽  
pp. 196-200 ◽  
Author(s):  
P. Vankan ◽  
D.C. Schram ◽  
R. Engeln

1964 ◽  
Vol 13 (26) ◽  
pp. 812-815 ◽  
Author(s):  
Raymond C. Mjolsness ◽  
Douglas H. Sampson

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