Ion-Molecule Chemistry Within Doubly Charged Ammonia Clusters

摘要

We present in this paper the observation of 'intramolecular' ion-molecule reactions within doubly charged clusters produced via electron impacts ionization of neat beams of ammonia molecules. The fragmentation pattern strongly suggests that reactions occurring within these doubly charged clusters are similar to those observed for singly charged ammonia clusters. This behavior implies that these cluster ions consist of two separate, singly charged ammonia cations which act separately within the bulk neutral cluster. That is, either one, both, or neither of the ammonia cations may react with the neutrals solvating them within the doubly charged cluster. (aw)