Mass spectrometric identification of C60 fragmentation regimes under energetic Cs+ bombardment

Abstract

Three C60 fragmentation regimes in fullerite bombarded by Cs+ are identified as a function of its energy. C2 is the major species sputtered at all energies. For E(Cs+) < 1 keV C2 emissions dominate. C2 and C1 have highest intensities between 1 and 3 keV with increasing contributions from C3 and C4. Intensities of all fragments maximize around 2 keV. Above 3 keV, fragments densities stabilize. The roles of and the contributions from direct recoils and collision cascades are determined. Maximum direct recoil energy delivered to the C60 fullerite cage is 210 eV at which only C2 emissions occur is identified and an explanation provided. The three fragmentation regimes under continued Cs+ bombardment eventually lead to complete destruction of the C60 cages transforming fullerite into amorphous carbon

12 pages, 5 figures

References in corpus (2)

• Regenerative Soot-V: Spectroscopy of the regenerative sooting discharges
• Transition from the C3-dominated discharge to the sooting plasma

Cited by in corpus (3)

• Dynamics of fragmentation and multiple vacancy generation in irradiated single-walled carbon nanotubes
• Experimental and Theoretical Aspects of the Fragmentation of Carbon's Single and Multi-Walled Nanotubes
• Dynamic emergence of fragmenting, exploding cages of irradiated single-walled carbon nanotubes and C60