Please use this identifier to cite or link to this item:
Title: Parametrization of mean radiative properties of optically thin steady-state plasmas and applications
Authors: Rodriguez, R. 
Espinosa, G. 
Gil, J. M. 
Rubiano, J. G. 
Mendoza, M.A. 
Martel, P. 
Minguez, E.
UNESCO Clasification: 2207 Física atómica y nuclear
Keywords: 52.25Dg
Parametrization of plasma radiative properties and applications
Steady-state collisional-radiative model
Optically thin mono- and multi-component plasmas
Issue Date: 2014
Project: Determinación de Propiedades Radiativas, Termodinamicas y Diagnosis Espectroscopica de Plasmas de Interés Científico-Tecnológico 
Keep in touch (UE)
Journal: Communications in Computational Physics 
Abstract: Plasma radiative properties play a pivotal role both in nuclear fusion and astrophysics. They are essential to analyze and explain experiments or observations and also in radiative-hydrodynamics simulations. Their computation requires the generation of large atomic databases and the calculation, by solving a set of rate equations, of a huge number of atomic level populations in wide ranges of plasma conditions. These facts make that, for example, radiative-hydrodynamics in-line simulations be almost infeasible. This has lead to develop analytical expressions based on the parametrization of radiative properties. However, most of them are accurate only for coronal or local thermodynamic equilibrium. In this work we present a code for the parametrization of plasma radiative properties of mono-component plasmas, in terms of plasma density and temperature, such as radiative power loss, the Planck and Rosseland mean opacities and the average ionization, which is valid for steady-state optically thin plasmas in wide ranges of plasma densities and temperatures. Furthermore, we also present some applications of this parametrization such as the analysis of the optical depth and radiative character of plasmas, the use to perform diagnostics of the electron temperature, the determination of mean radiative properties for multicomponent plasmas and the analysis of radiative cooling instabilities in some kind of experiments on high-energy density laboratory astrophysics. Finally, to ease the use of the code for the parametrization, this one has been integrated in a user interface and brief comments about it are presented.
ISSN: 1815-2406
DOI: 10.4208/cicp.080114.170314a
Source: Communications In Computational Physics [ISSN 1815-2406], v. 16 (3), p. 612-631
Appears in Collections:Artículos
Show full item record

Google ScholarTM




Export metadata

Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.