Eur. Phys. J. Special Topics 222, 2207-2216 (2013)
https://doi.org/10.1140/epjst/e2013-01997-5

Regular Article

Quantum close-coupling calculations on conventional and coherence cross sections in Ca(4s4p,³P_j=2←³P_j=1) + RG inelastic collision

Institute of Physics, Pomeranian University in Słupsk, ul. Arciszewskiego 22b, 76-200 Słupsk, Poland

^a e-mail: ewa@apsl.edu.pl

Received: 8 June 2013
Revised: 9 August 2013
Published online: 23 October 2013

Abstract

The quantum close-coupling studies of the ³P_j=2 ←³P_j=1 non-adiabatic transition in Ca colliding with He and Ar are presented. The multistructure cross sections are calculated using the pseudopotential curves of E. Czuchaj, M. Krośnicki, H. Stoll, Chem. Phys. 101, 292 (2003). The conventional and coherence cross sections that can be measured in collisional experiments with atomic beams are expressed via generalized Grawert parameters, quantities dependent on dynamics only and independent of geometry. They allow us to obtain direct relationships between the average cross sections and the conventional and coherence cross sections. The possibility of experimental determination of reorientation, alignment and other non-adiabatic effects occuring during atomic collisions is discussed.