Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aekt_v1_0.tar.gz(433 Kbytes)|
|Manuscript Title: MULTI-fs - A Computer Code for Laser-Plasma Interaction in the Femtosecond Regime|
|Authors: R. Ramis, K. Eidmann, J. Meyer-ter-Vehn, S. Hüller|
|Program title: MULTI-fs|
|Catalogue identifier: AEKT_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 183(2012)637|
|Programming language: FORTRAN.|
|Computer: PC (32 bits and 64 bits architecture).|
|Operating system: Linux/Unix.|
|RAM: 1.6 MiB|
|Keywords: Laser and VUV Light Absorption in Warm Dense Matter, Radiation Transport, Computational Methods in Gas Dynamics, Short Pulse Laser Interaction.|
|PACS: 47.11.-j, 47.70.Mc, 52.20.Fs, 52.38.Dx.|
|Classification: 19.13, 21.2.|
Nature of problem:
One dimensional interaction of intense ultrashort (subpicosecond) and ultraintense (up to 1017 W cm-2) laser beams with matter.
The hydrodynamic motion coupled to laser propagation and several transport mechanisms is solved in one-dimensional geometry using a fractional step scheme. Fluid motion together with heat diffusion is solved by using an implicit Lagrangian method. Transport by thermal conduction and radiation as well as electron-ion energy transfer are treated in a two-temperature (electron and ion) model covering the wide range from solid state to high temperature plasma. Laser propagation is calculated from the one-dimensional Maxwell equations. Radiation transfer is solved by using the forward-reverse method for a discrete number of frequency groups. Matter properties are interpolated from tables (equations-of-state, ionization, opacities, and emissivities) generated by external codes. An alternative WKB laser deposition package is available to be used for long pulse lasers.
The code has been designed for typical conditions prevailing in short pulse (fs-ps time scale) laser-matter interactions at moderate intensities (1012-1017 W cm-2). Although a wider range of situations can be treated, extrapolations to regions beyond this design range need special care.
A graphical post processor is included in the package. Its use requires the previous installation of code MULTI2D (see "Subprograms used" above)
4.8 seconds for the example supplied
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