Europhys. Lett.
Volume 65, Number 2, January 2004
Page(s) 179 - 185
Section Atomic and molecular physics
Published online 01 January 2004
Europhys. Lett., 65 (2) , pp. 179-185 (2004)
DOI: 10.1209/epl/i2003-10077-3

Vibrational excitation of water by low-energy electron scattering: Calculations and experiments

T. Nishimura and F. A. Gianturco

Dipartimento di Chimica and INFM, Università di Roma "La Sapienza" Piazzale A. Moro 5, 00185, Italy

(Received 25 July 2003; accepted in final form 17 November 2003)

Vibrationally inelastic cross-sections of the water molecule by low-energy electron collisions are computed by solving the rigorous vibrational coupled channel (VCC) equations within a body-fixed (BF) formulation. The results have been obtained down to very low energies above the threshold openings for the three normal modes of the target. A comparison with existing experiments, and with the most recent calculations, clearly shows the good agreement with measurements achieved by our present results, especially at collision energies of less than 1 $\un{eV}$ never analysed in previous work.

34.50.Gb - Electronic excitation and ionization of molecules; intermediate molecular states (including lifetimes, state mixing, etc.).

© EDP Sciences 2004