Ionization induced by protons on isolated molecules of adenine: theory, modelling and experiment

C. CHAMPION; M.E. GALASSI; P. WECK; C. ABDALLAH; Z. FRANCIS; M.A. QUINTO; O. FOJON; R. RIVAROLA; J. HANSSEN; Y. IRIKI; A. ITOH

Lanzhou

Conferencia; XXVIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2013); 2013

Abstract. We here report a comparison between semi-empirical and theoretical predictions in  terms of differential and total cross sections for proton-induced ionization of isolated adenine  molecules. Whereas the first ones are provided by existing analytical models, the second ones  are based on two quantum-mechanical models recently developed within the 1st Born and the  continuum distorted wave approximation, respectively. Besides, a large set of experimental  data is also reported for comparisons. In all kinematical conditions here investigated, we have   observed a very good agreement between theory and experiment whereas strong discrepancies  were reported with the semi-empirical models in particular when doubly-differential cross  sections are analysed.