Electronic Resource
Springer
Hyperfine interactions
99 (1996), S. 175-191
ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Highly-charged fullerene ions C 60 z+ and C 70 z+ with charge states up to z=7 have been produced in an electron impact ion source of a two sector field mass spectrometer by using ion source operating conditions similar to those used in EBIT sources. The stability of these ions was investigated quantitatively in the two field free regions of the mass spectrometer. It was found that besides C2 evaporation the dominant fission process for ions with charges larger than +2 is the loss of a charged C 2 + unit via a super-asymmetric charge separation reaction C 60 z+ → C 58 (z−1)+ +C 2 + and C 70 z+ → C 68 (z−1)+ +C 2 + , respectively. The most important finding from these studies is that this super-asymmetric dissociation reaction proceeds via a three stage reaction sequence involving an electron transfer reaction at the second stage between a receding C2 unit and the remaining highly-charged fullerene cage.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02274921
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