Determination of Energy-Transfer Distributions in Ionizing Ion-Molecule Collisions

S. Maclot (1) , R. Delaunay (1) , D. g. Piekarski (2) , A. Domaracka (1) , B. a. Huber (1) , L. Adoui (1) , F. Martín (2) , M. Alcamí (2) , L. Avaldi (3) , P. Bolognesi (3) , S. Díaz-Tendero (2) , Patrick Rousseau (1)

1 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
2 Departamento de Qímica, Módulo 13, Universidad Autónoma de Madrid
3 CNR-ISM

The ionization and fragmentation of the nucleoside thymidine in the gas phase has been investigated by combining ion collision with state-selected photoionization experiments and quantum chemistry calculations. The comparison between the mass spectra measured in both types of experiments allows us to accurately determine the distribution of the energy deposited in the ionized molecule as a result of the collision. The relation of two experimental techniques and theory shows a strong correlation between the excited states of the ionized molecule with the computed dissociation pathways, as well as with charge localization or delocalization.

Domaines: Agrégats Moléculaires et Atomiques [physics.atm-clus]; Chimie-Physique [physics.chem-ph]

S. Maclot, R. Delaunay, D. g. Piekarski, A. Domaracka, B. a. Huber, et al.. Determination of Energy-Transfer Distributions in Ionizing Ion-Molecule Collisions. Physical Review Letters, 2016, 117 (7), pp.073201. ⟨10.1103/PhysRevLett.117.073201⟩. ⟨hal-01365426⟩