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Manuscript Title: McTrap, a program for the computation of radiation trapping in 3-
level atoms including bleaching effects. | ||

Authors: A.F. Molisch, B.P. Oehry, W. Schupita, G. Magerl | ||

Program title: McTrap | ||

Catalogue identifier: ADCC_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 93(1996)127 | ||

Programming language: Pascal. | ||

Computer: VAX 4000 Alpha. | ||

Operating system: VMS (OpenVMS), UNIX (OSF/1), MS-DOS 6.0. | ||

RAM: 500K words | ||

Word size: 32 | ||

Keywords: Radiation Trapping, Radiative transfer, Monte Carlo simulations, Particle diffusion, Bleaching. | ||

Classification: 21.2. | ||

Nature of problem:Computation of the bleaching of ground state atoms in 3-level atoms in a two-dimensional cylindrical cell, with inclusion of particle diffusion, and of nonlinear trapping in such a geometry. The program can be easily specialized to treat the simpler, more usual radiation trapping problems. | ||

Solution method:Monte Carlo treatment of trapping and analytical solution of the diffusion equation for the particle diffusion. | ||

Restrictions:Restrictions of the achievable accuracy by memory and run-time limitations. | ||

Unusual features:None (An external random number generator might be convient.) | ||

Running time:Strongly dependent on the required accuracy; will be between 100 and 10000 CPU seconds in most practical cases. |

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