Abstract
Carbon cluster dianions (C7)2− and (C10)2− were produced by sputtering of a graphite sample and detected by accelerator mass spectrometry (AMS). The collisional activation of these dianions was studied via their interaction with He gas in an ion beam cooler device which is part of the AMS instrument. Contrary to the respective monoanion cluster, the stability of the dianions exhibits a very pronounced dependence on the gas pressure (i.e., the He gas density). Above a specific value, the transmitted intensity of both dianions decreases strongly pointing to the occurrence of collision-induced reactions. From the observed reaction products, it is concluded that both electron detachment and dissociation take place upon collisions with the gas atoms, following generic pathways such as (Cn)2− → (Cn)− + e− and (Cn)2− → (Cn-m)− + (Cm)−.
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.
