Dissociative electron attachment to amino-acids: The case of Leucine☆

Abstract In this work, mechanisms that control the dissociation of Leucine amino-acid by low-energy ( − , (Leu-16 amu) − and anion at 42 amu. The (Leu-16) − species observed near 1.0 eV and the ( m / z ) 42 anion produced near 7.8 eV are interpreted to arise from the decomposition of the amino-acid side group. The (Leu-H) − anion observed at 1.1 eV is induced by from the fragmentation of the carboxylic group.