Ion Track Aspects of Fast Ion Induced Desorption of Biomolecules
Fast heavy ions have been used to desorb and ionize biomolecules, like small proteins, from a solid sample surface. Mass spectra were studied by the time-of-flight method. A model for the desorption process, based on the ion-track concept, has been developed and used to analyze yields of molecular ions as a function of the energy density in the ion track. Experimental data on the yield dependence of sample thickness are presented.
KeywordsField Free Region Desorption Yield Plasma Desorption Mass Spectrometry Tandem Accelerator Laboratory Electronic Desorption
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