Abstract
We have measured the relative yields of the cluster ions (NH3)n−1NH+2 and (NH3)nH+2 produced by electron impact ionization of a supersonic molecular beam of neutral ammonia clusters, as functions of cluster ion size, neutral beam stagnation temperature, and electron impact energy. Our observation of a magic number at n=7 in the distribution of (NH3)n−1NH+2 cluster ions is interpreted in terms of an intracluster bimolecular association reaction between a nascent NH+2 daughter ion and an adjacent NH3 solvent molecule, giving rise to a protonated hydrazine product ion. Our observation of magic numbers at n=5 and n=8 in the (NH3)nH+2 cluster ion distribution is consistent with the production of the N2H+8 Rydberg radical cation via an intracluster ion–molecule reaction. Our experimental results are consistent with recent theoretical predictions concerning the structure and stability of N2H+8 ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
