Izvorni znanstveni članak
Unitarised capture cross sections in the impact parameter representation
V. P. Shevelko
; Lebedev Physical Institute, Academy of Sciences of the USSR, Leninsky prospect 53, Moscow, USSR
Sažetak
The procedure of the unitarisation (normalisation) of the charge exchange capture cross sections was performed in the impact parameter representation using the relation between quantum-mechanical and impact parameter amplitudes. As one can expect, the normalisation effect is very essential for transitions with small resonance defect w in the region of intermediate and low relative velocities. The analytical expressions for ls-electron capture amplitudes into nlm-states with n < 3 and the amplitudes, summed over ali lm-states, were obtained in the Brinkman-Kramers approximation. The influence of the normalisation effect is illustrated by numerical calculations. The method of unitarisation, used in this paper, is rather effective in the region of intermediate velocities for the reactions, when the contribution from nonadiabatic transitions near quasiintersections of electronic levels of the 'ion+ atom' system is negligible.
Ključne riječi
Hrčak ID:
327740
URI
Datum izdavanja:
3.8.1981.
Posjeta: 529 *