title: Communication: identification of daughter ions through their electronic spectroscopy at low temperature.
abstract: We present experimental results on photofragmentation of cooled fragments issued from the photofragmentation of cold parent ions. The cooling of the daughter ions at a few K allows its characterization not only through its fragmentation pattern but also through its well resolved electronic spectroscopy. The proof of principle of the method is demonstrated on the photofragment resulting from Cα-Cβ bond rupture in protonated tyrosine (TyrH(+)). The analysis of the daughter ion (m/z 108) photofragmentation spectrum is in agreement with the proposed mechanism implying a proton transfer to the phenyl ring as the first step of the fragmentation mechanism of TyrH(+).
authors.affiliation: Aix-Marseille Université, CNRS, PIIM, UMR-7345, Marseille Cedex 20, France.
authors.forename: Claude
authors.initials: C
authors.lastname: Dedonder
authors.affiliation: Aix-Marseille Université, CNRS, PIIM, UMR-7345, Marseille Cedex 20, France.
authors.forename: Géraldine
authors.initials: G
authors.lastname: Féraud
authors.affiliation: Aix-Marseille Université, CNRS, PIIM, UMR-7345, Marseille Cedex 20, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Jouvet