# Matrix formulation of the energy exchange problem of multi-level systems and the code FRIGUS

@article{Coppola2019MatrixFO, title={Matrix formulation of the energy exchange problem of multi-level systems and the code FRIGUS}, author={Carla Maria Coppola and Mher V. Kazandjian}, journal={Rendiconti Lincei. Scienze Fisiche e Naturali}, year={2019}, volume={30}, pages={707 - 714} }

FRIGUS is a user-friendly Python package for computing cooling functions that depend on gas density, radiation and gas temperatures. The input data are organized as matrices and the computation of the equilibrium level population, as well as the time-dependent evolution of the level population, together with the energy exchange is reduced to matrix operations, unlike traditional methods. The compact matrix formalism makes it easy to handle multi-level and multi-quantum number systems. FRIGUS… Expand

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“Transitivity”: A Code for Computing Kinetic and Related Parameters in Chemical Transformations and Transport Phenomena

- Computer Science, Medicine
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- 2019

The Transitivity code, written in Python, is document, a free open-source code compatible with Windows, Linux and macOS platforms, and presents a very intuitive graphical interface which it is believed to provide an excellent working tool for researchers and as courseware to teach statistical thermodynamics, thermochemistry, kinetics, and related areas. Expand

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