Please use this identifier to cite or link to this item:
Title: Calculation of the radiative opacity of laser-produced plasmas using a relativistic-screened hydrogenic model
Authors: Rubiano, JG 
Florido, R 
Rodriguez, R 
Gil, JM 
Martel, P. 
Mínguez, E.
UNESCO Clasification: 220410 Física de plasmas
220703 Física atómica
Keywords: Atomic models
Ionization state
Physics of dense plasmas
Screened hydrogenic model
Radiative opacity
Issue Date: 2003
Publisher: 0022-4073
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer 
Abstract: n this work, we use a relativistic-screened hydrogenic model to compute the radiative opacity of laser-produced plasmas. The model is based on a set of screening charges which allow one to easily calculate atomic properties of isolated ions. These screened charges have been fitted to a fourth-order polynomial depending on the nuclear charge Z for ground and single excited states of ions belonging to the isoelectronic sequences comprised between He-like to U-like. In the opacity model used, ionic populations are obtained by solving the Saha equation including degeneracy corrections. Bound–bound transitions are determined using a Voigt profile for line shape, which includes natural, collisional, Doppler and UTA widths. Bound–free and free–free opacities are evaluated using the Kramer cross-sections with appropriate corrections. Scattering processes are computed through the use of the Thomson formula with corrections. The results are compared with other screened hydrogenic models and more sophisticated self-consistent codes.
ISSN: 0022-4073
DOI: 10.1016/S0022-4073(02)00298-4
Source: Journal Of Quantitative Spectroscopy & Radiative Transfer [ISSN 0022-4073], v. 83 (2), p. 159-182
Appears in Collections:Artículos
Show full item record


checked on Jul 25, 2021


checked on Jul 25, 2021

Page view(s)

checked on Jul 24, 2021

Google ScholarTM




Export metadata

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