title: A comprehensive study of cold protonated tyramine: UV photodissociation experiments and ab initio calculations.
abstract: We present a comprehensive experimental study of protonated tyramine ions in a cold 3D quadrupole ion trap coupled to a time-of-flight mass spectrometer. Multiple UV photodissociation techniques have been developed, including single and double resonance spectroscopy along with time-resolved excited state lifetime measurements through a picosecond pump-probe scheme. An original UV-UV hole burning method is presented which can be used without modification of the quadrupole ion trap. The electronic spectrum of the cold protonated tyramine exhibits well-defined vibronic transitions, allowing the firm assignment of its two low-lying energy conformations by comparison with CC2 ab initio excited state calculations.
authors.affiliation: CNRS, Université Paris Sud, Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8214, 91405 Orsay Cedex, France. gilles.gregoire@u-psud.fr.
authors.forename: Michel
authors.initials: M
authors.lastname: Broquier
authors.forename: Satchin
authors.initials: S
authors.lastname: Soorkia
authors.forename: Gilles
authors.initials: G
authors.lastname: Grégoire