title: Internal energy distribution in electrospray ionization.
abstract: Internal energies and energy distributions were studied using the 'survival yield' method developed previously. In addition to conventional benzylpyridinium salts, protonated esters (fragmenting by rearrangement) and protonated leucine enkephalin were also used, extending the validity of the technique. Fragmentation processes were studied in the cone voltage region and modeled by the RRKM-based MassKinetics program. The results show that the shapes of the energy distributions are similar to thermal distributions. The mean internal energies are very similar for all compound classes studied, and show a linear increase with collision energy in the 10-50 eV region.
authors.affiliation: Synthèse, Structure et Fonction de Molécules Bioactives, CNRS-UMR 7613, 4 place Jussieu, 75252 Paris cedex 05, France.
authors.forename: Jessie
authors.initials: J
authors.lastname: Naban-Maillet
authors.forename: Denis
authors.initials: D
authors.lastname: Lesage
authors.forename: Anne
authors.initials: A
authors.lastname: Bossée
authors.forename: Yves
authors.initials: Y
authors.lastname: Gimbert
authors.forename: Judit
authors.initials: J
authors.lastname: Sztáray
authors.forename: Károly
authors.initials: K
authors.lastname: Vékey
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Tabet
mesh_terms: D004735:Energy Transfer; D004743:Enkephalin, Leucine / Q000032:analysis* / Q000737:chemistry; D004952:Esters / Q000737:chemistry; D007700:Kinetics; D008962:Models, Theoretical; D011522:Protons; D011726:Pyridinium Compounds / Q000032:analysis* / Q000737:chemistry; D012984:Software; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D004952:Esters; D011522:Protons; D011726:Pyridinium Compounds; D004743:Enkephalin, Leucine