Ultrafast dynamics and fragmentation of C60 in intense laser pulses

Abstract

-The radiation-induced fragmentation of the C 60 fullerene was investigated by the tight-binding electron-ion dynamics simulations. In intense laser field, the breathing vibrational mode is much more strongly excited than the pentagonal-pinch mode. The fragmentation effect was found more remarkable at long wavelength λ≥800 nm rather than the resonant wavelengths due to the internal laser-induced dipole force, and the production ratio of C and C 2 rapidly grows with increasing wavelength. By such fragmentation law, C atoms, C 2 dimers or large C n fragments could be selectively obtained by changing the laser wavelength. And the fragmentation of C 60 by two laser pulses like the multi-step atomic photoionization was investigated.

Magnetic spin moment reduction in photoexcited ferromagnets through exchange interaction quenching: beyond the rigid band approximation

“…Ultrafast dynamics and fragmentation of C 60 were investigated under intense laser pulses [5]. Ultrafast laser pulses can coherently control the four-wave mixing signals in GaAs [6].…”

“…A strong and ultrafast laser pulse can rip off and drive back electrons from gaseous atoms to generate high order harmonic generations, with emitted energy exceeding 200 eV and with time duration on the order of several hundred attoseconds (1 as = 10 −18 s), representing an era of attophysics [4]. Ultrafast dynamics and fragmentation of C 60 were investigated under intense laser pulses [5].…”

Resolution-of-the-identity second-order Møller–Plesset perturbation theory with complex basis functions: Benchmark calculations and applications to strong-field ionization of polyacenes

“…87 Theoretical investigations of larger acenes have not been reported to the best of our knowledge, but there are experimental data on the Coulomb explosion of naphthalene, anthracene, and tetracene that can be related to the ionization rates studied here. 88,89 We also note work on related molecules, for example, quantum dynamics simulations on the ionization of fullerene (C 60 ), 90 an experimental study on the ionization of estradiol (C 18 H 24 O 2 ), 91 and experimental and theoretical work on high-harmonic generation for heteroaromatics. 92,93 A. Linearly fused acenes Figure 3 shows ionization rates for five linearly fused polyacenes (benzene to pentacene) at field strengths of 0.04 a.u.…”