Molecular Secondary Ion Emission from Different Amino Acid Adsorption States on Metals
Independent of the special kind of irradiance (photons, keV-ions, fission fragments), the emission of molecular secondary ions (M±H)±, (M+alkali)+, (M+Ag)+ has been observed from various biologically important compounds (amino acids, peptides, nucleotides) with high yields. However, only little understanding of the ion formation processes has been achieved so far, mainly due to the fact that samples are usually prepared from solution which obviously results in a very complex surface composition. Therefore, well-defined adsorption systems are required for investigations of the substrate influence on molecular secondary ion emission.
KeywordsAdsorption System Fission Fragment Target Heating Submonolayer Coverage Clean Metal Surface
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