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Internal energy distribution in electrospray ionization
Author(s) -
NabanMaillet Jessie,
Lesage Denis,
Bossée Anne,
Gimbert Yves,
Sztáray Judit,
Vékey Károly,
Tabet JeanClaude
Publication year - 2005
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.773
Subject(s) - chemistry , fragmentation (computing) , internal energy , protonation , electrospray ionization , ionization , yield (engineering) , electrospray , thermal , translational energy , computational chemistry , collision , intramolecular force , atomic physics , chemical physics , mass spectrometry , stereochemistry , thermodynamics , ion , organic chemistry , chromatography , physics , computer science , operating system , computer security
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. Copyright © 2004 John Wiley & Sons, Ltd.