Kinetic-Energy-Release Distributions and Barrier Heights for C₂⁺ Emission from Multiply Charged C₆₀ and C₇₀ Fullerenes
We present experimental kinetic-energy-release distributions in the asymmetric fission processes C60q+ → C58 (q-1)+ + C2+ and C70q+ → C68 (q-1)+ + C2+ for highly excited mother ions in charge states q=4-8. We find that the distributions for C70q+ are considerably narrower and peak at lower energies than for C60q+ in the corresponding charge state when q>4. Further, semiempirical values for C2+ fission barrier heights were extracted for q=4-6 by means of a statistical approach and the measured intensity ratios between fission and C2 evaporation.
N. Haag et al., "Kinetic-Energy-Release Distributions and Barrier Heights for C₂⁺ Emission from Multiply Charged C₆₀ and C₇₀ Fullerenes," Physical Review A - Atomic, Molecular, and Optical Physics, vol. 78, no. 4, pp. 043201-1 - 043201-9, American Physical Society (APS), Oct 2008.
The definitive version is available at https://doi.org/10.1103/PhysRevA.78.043201
Keywords and Phrases
Fission Reactions; Fullerenes; Kinetic Energy; Asymmetric Fissions; Barrier Heights; C70 Fullerenes; Charge States; Fission Barriers; Intensity Ratios; Lower Energies; Multiply Charged; Semiempirical Values; Statistical Approaches; Image Segmentation
International Standard Serial Number (ISSN)
Article - Journal
© 2008 American Physical Society (APS), All rights reserved.
01 Oct 2008