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Response of C60 and Cn to ultrashort laser pulses B. Torralva,1

Summary: Response of C60 and Cn to ultrashort laser pulses
B. Torralva,1
T. A. Niehaus,2,3
M. Elstner,3
S. Suhai,2
Th. Frauenheim,3
and R. E. Allen1
Texas A & M University, Department of Physics, College Station, Texas 77843
Deutsches Krebsforschungszentrum, Molekulare Biophysik, D-69120 Heidelberg, Germany
Universitašt Paderborn, Fachbereich Physik, Theoretische Physik, D-33098 Paderborn, Germany
Received 6 April 2001; revised manuscript received 22 June 2001; published 21 September 2001
In this paper we introduce a method for realistic simulations of nonadiabatic processes, including the
interaction of light with matter. Calculations of the response of C60 and carbon chains to laser pulses demon-
strate that even rather subtle features are correctly described. For example, in C60 the pentagonal-pinch mode
is dominant at low fluence, the breathing mode is dominant at high fluence, and dimers are preferentially
emitted during photofragmentation. In carbon chains, on the other hand, trimers tend to be broken off. After
collisional fragmentation, the remnants of a C60 molecule tend to reform their bonds, yielding new 5, 6, or 7


Source: Allen, Roland E. - Department of Physics and Astronomy, Texas A&M University


Collections: Physics