Electron degradation and yields of initial products: VIII. Subexcitation electrons in H2 and D2 gases (CROSBI ID 132290)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kimura, Mineo ; Krajcar Bronić, Ines ; Inokuti, Mitio
engleski
Electron degradation and yields of initial products: VIII. Subexcitation electrons in H2 and D2 gases
The moderation of subewxcitation electrons in H2 and D2 is investigated by using the Spencer-Fano (SF) equation and the continuous-slowing-down approximation (CSDA). Cross-section data are adopted from the compilation by Buckman and Phelps (1985). Throughout, we focus on isotope effects, i.e., differences between H2 and D2, and consider electrons at energies appreciably higher than the thermal energy. In summary, because vibrational and rotational excitation channels have lower thresholds in D2, subexcitation-electron behavior in D2 at energies below 0.6 eV shows different characteristics from that in H2. The moderation rate in H2 is larger than that in D2 by a factor of about 1.7. This difference is close to but not exactly the factor of 2 expected from an elementary estimate.
electron degradation ; subexcitation electrons ; Spencer-Fano equation ; H2 ; D2
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Podaci o izdanju
94 (12)
1991.
8244-8251
objavljeno
0021-9606
1089-7690
10.1063/1.460108