Internal energy distribution in electrospray ionization

Naban-Maillet, J. and Lesage, D. and Bossée, A. and Gimbert, Y. and Sztáray, Judit and Vékey, Károly (2005) Internal energy distribution in electrospray ionization. JOURNAL OF MASS SPECTROMETRY, 40 (1). pp. 1-8. ISSN 1076-5174

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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.

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