R-matrix calculation of low-energy electron collisions with phosphoric acid

Lilianna Bryjko (1) , Tanja van Mourik (1) , Amar Dora (1) , Jonathan Tennyson (1)

1 Department of Physics and Astronomy [UCL London]

Electron collision calculations are performed on two conformers of H 3 PO 4, a weakly dipolar form with all OH groups pointing up, and a strongly dipolar form where one OH group points down. Strong evidence is found for a broad shape resonance at about 7 eV for both conformers, although the precise parameters of this resonance are sensitive to the details of the target wavefunction used. 10-state close-coupling calculations suggest the presence of very narrow, Feshbach resonances in a similar energy region. Again both conformers behave similarly. Elastic and electronically inelastic cross sections are calculated for both conformers.

Mots clés: Physical Sciences

Domaines: Physique [physics]

Lilianna Bryjko, Tanja van Mourik, Amar Dora, Jonathan Tennyson. R-matrix calculation of low-energy electron collisions with phosphoric acid. Journal of Physics B: Atomic, Molecular and Optical Physics, 2010, 43 (23), pp.235203. ⟨10.1088/0953-4075/43/23/235203⟩. ⟨hal-00576258⟩