Abstract McTrap computes radiation trapping including bleaching effects and particle diffusion in a two-dimensional cylinder geometry. It combines Monte Carlo simulations of radiation trapping and analytical solutions of the diffusion equation for a highly efficient computation of the distribution of excited atoms. The spectral lineshapes can be freely chosen. Commonly occurring special cases, like two-level atoms, one-dimensional geometries (plane-parallel slab and infinite cylinder) etc. can also si... Title of program: McTrap Catalogue Id: ADCC_v1_0 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. Versions of this program held in the CPC repository in Mendeley Data ADCC_v1_0; McTrap; 10.1016/0010-4655(95)00093-3 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

Abstract McTrap computes radiation trapping including bleaching effects and particle diffusion in a two-dimensional cylinder geometry. It combines Monte Carlo simulations of radiation trapping and analytical solutions of the diffusion equation for a highly efficient computation of the distribution of excited atoms. The spectral lineshapes can be freely chosen. Commonly occurring special cases, like two-level atoms, one-dimensional geometries (plane-parallel slab and infinite cylinder) etc. can also si... Title of program: McTrap Catalogue Id: ADCC_v1_0 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. Versions of this program held in the CPC repository in Mendeley Data ADCC_v1_0; McTrap; 10.1016/0010-4655(95)00093-3 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

Abstract Radiation trapping is described by the Holstein equation, a Fredholm integral equation of the second kind. By combining analytical and numerical techniques, the presented code efficiently computes the eigenvalues and eigenfunctions of this equation for three important geometries: plane-parallel slab, long cylinder, and spherically symmetric geometry; all practically occuring spectral lineshapes are considered. The program is written in standard Fortran. Title of program: RAD-TRAP Catalogue Id: ACLB_v1_0 Nature of problem Computation of the eigenvalues and eigenfunctions of the Holstein integral equation describing radiation trapping in an atomic vapor (in one-dimensional geometries). Versions of this program held in the CPC repository in Mendeley Data ACLB_v2_0; RAD-TRAP 2; 10.1016/0010-4655(93)90009-2 ACLB_v1_0; RAD-TRAP; 10.1016/0010-4655(93)90108-O This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

Abstract Radiation trapping is described by the Holstein equation, a Fredholm integral equation of the second kind. By combining analytical and numerical techniques, the presented code efficiently computes the eigenvalues and eigenfunctions of this equation for three important geometries: plane-parallel slab, long cylinder, and spherically symmetric geometry; all practically occuring spectral lineshapes are considered. The program is written in standard Fortran. Title of program: RAD-TRAP Catalogue Id: ACLB_v1_0 Nature of problem Computation of the eigenvalues and eigenfunctions of the Holstein integral equation describing radiation trapping in an atomic vapor (in one-dimensional geometries). Versions of this program held in the CPC repository in Mendeley Data ACLB_v2_0; RAD-TRAP 2; 10.1016/0010-4655(93)90009-2 ACLB_v1_0; RAD-TRAP; 10.1016/0010-4655(93)90108-O This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

Abstract RAD-TRAP computes the solution of the Holstein equation of radiation trapping for three important geometries: plane-parallel slab, long cylinder, and sphere. The new version 2 offers the direct computation of the steady-state distribution of excited atoms and the computation of the emergent spectra; effects like self-reversal can now be studied. It also includes a new algorithm for a more efficient, highly accurate computation of the cylinder case. The new version also runs on IBM-PCs. ... Title of program: RAD-TRAP 2 Catalogue Id: ACLB_v2_0 [ACNX] Nature of problem Computation of the eigenvalues and eigenfunctions of the Holstein integral equation (describing radiation trapping in an atomic vapor) and the steady-state distribution of excited atoms in one-dimensional geometries. Versions of this program held in the CPC repository in Mendeley Data ACLB_v2_0; RAD-TRAP 2; 10.1016/0010-4655(93)90009-2 ACLB_v1_0; RAD-TRAP; 10.1016/0010-4655(93)90108-O This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

Abstract RAD-TRAP computes the solution of the Holstein equation of radiation trapping for three important geometries: plane-parallel slab, long cylinder, and sphere. The new version 2 offers the direct computation of the steady-state distribution of excited atoms and the computation of the emergent spectra; effects like self-reversal can now be studied. It also includes a new algorithm for a more efficient, highly accurate computation of the cylinder case. The new version also runs on IBM-PCs. ... Title of program: RAD-TRAP 2 Catalogue Id: ACLB_v2_0 [ACNX] Nature of problem Computation of the eigenvalues and eigenfunctions of the Holstein integral equation (describing radiation trapping in an atomic vapor) and the steady-state distribution of excited atoms in one-dimensional geometries. Versions of this program held in the CPC repository in Mendeley Data ACLB_v2_0; RAD-TRAP 2; 10.1016/0010-4655(93)90009-2 ACLB_v1_0; RAD-TRAP; 10.1016/0010-4655(93)90108-O This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)