Electron impact mass spectrometry of cholesterol in supersonic molecular beams

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Abstract

The effect of vibrational supercooling on the electron impact mass spectrometry of cholesterol was studied in supersonic molecular beams. An extensive mass spectral simplification was observed at 20 eV electron energy. The parent undissociated molecular ion becomes the dominant peak even at 70 eV electron energy but the conventional complex fragmentation pattern is retained in spite of the large vibrational cooling. Some of the unique aspects of electron impact mass spectrometry in supersonic molecular beams are mentioned.

Original languageEnglish
Pages (from-to)5200-5202
Number of pages3
JournalJournal of Physical Chemistry
Volume94
Issue number13
DOIs
StatePublished - 1990

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