Vibrational Feshbach resonances in dissociative electron attachment to uracil

Gordon A. Gallup, Ilya I. Fabrikant
2011 Physical Review A. Atomic, Molecular, and Optical Physics  
Low-energy dissociative electron attachment to uracil molecules in the gas phase is partly controlled by interaction between the lowest σ * resonance with a dipole-supported anion state. We calculate this contribution using a combination of the finite element discrete model with the resonance R-matrix theory. Deuterated uracil is investigated, also, and a strong isotope effect is found. The results agree qualitatively and semiquantitatively with experimental data, but for a complete description
more » ... of the process the interaction between a second N-H bond σ * resonance in the molecule and the second π * resonance should be included.
doi:10.1103/physreva.83.012706 fatcat:sturyiwvnjfcxjaoyafoivfnwq