https://doi.org/10.1007/s100530050367
Vibrational excitation by positron collisions with molecular gases: a study of O2 and NO targets
Dipartimento di Chimica, Università di Roma, Città Universitaria, 00185 Rome,
Italy
Received:
23
April
1999
Revised:
3
June
1999
Published online: 15 September 1999
The scattering of slow positrons from 
and NO molecules
is treated using exact static interactions and a model
potential for correlation-polarisation forces. The quantum
coupled equations for the elastic scattering are extended
to vibrationally inelastic processes and the different
excitation probabilities are evaluated.
Comparison with existing experiments for the
NO target indicates that the present
calculations provide a realistic treatment of
positron scattering below Ps formation and give computational estimates on
the efficiency of such projectiles in
producing vibrationally excited molecules in the ambient gas.
PACS: 34.50.Gb – Electronic excitation and ionization of molecules; intermediate molecular states (including lifetimes, state mixing, etc.) / 34.80.Bm – Elastic scattering of electrons by atoms and molecules
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
