Energy dissipation in dielectrics after swift heavy-ion impact: A hybrid model

Journal Article · Thu Dec 01 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.84.214105· OSTI ID:21596927

Osmani, O ^[1]; Medvedev, N ^[1]; Schleberger, M ^[2]; Rethfeld, B ^[1]

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1. Department of Physics and OPTIMAS Research Center, Technical University of Kaiserslautern, 67653 Kaiserslautern (Germany)
2. Faculty of Physics, University of Duisburg-Essen and CeNIDE, 47048 Duisburg (Germany)

The energy dissipation after irradiation of dielectrics with swift heavy ions is studied applying a combination of the Monte Carlo (MC) method and the two-temperature model (TTM). Within the MC calculation the transient dynamics of the electrons in the excited dielectric is described: the primary excitation and relaxation of the target electrons as well as the creation of secondary electrons. From the MC data, it was observed that the electron system can be considered as thermalized after a time of t{approx_equal}100 fs after the ion impact. Then the TTM is applied to calculate the spatial and temporal evolution of the electron and lattice temperature via the electron-phonon coupling using the MC data as initial conditions. Additionally, this MC-TTM combination allows to compute material parameters of strongly excited matter.

• OSTI ID: 21596927
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 21; Other Information: DOI: 10.1103/PhysRevB.84.214105; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
DIELECTRIC MATERIALS
ELECTRON-PHONON COUPLING
ELECTRONS
ENERGY LOSSES
EXCITATION
HEAVY IONS
ION BEAMS
MONTE CARLO METHOD
PHYSICAL RADIATION EFFECTS
RELAXATION
TRANSIENTS
BEAMS
CALCULATION METHODS
CHARGED PARTICLES
COUPLING
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
FERMIONS
IONS
LEPTONS
LOSSES
MATERIALS
RADIATION EFFECTS
SIMULATION