Observatorio de I+D+i UPM

Descripción
Ca IV emission lines are under the preview of Solar Ultraviolet Measurements of Emitted Radiation device aboard the Solar and Heliospheric Observatory. Also, lines of the Ca IV in planetary nebulae NGC 7027 were detected with the Short Wavelength Spectrometer on board the Infrared Space Observatory. These facts justify an attempt to provide new spectroscopic parameters of Ca IV. There are no theoretical or experimental Stark broadening data for Ca IV. Using the Griem semi-empirical approach and the COWAN code, we report in this paper calculated values of the Stark broadening parameters for 467 lines of Ca IV. They were calculated using a set of wavefunctions obtained by using Hartree?Fock relativistic calculations. These lines arising from 3s23p4ns (n = 4, 5), 3s23p44p, 3s23p4nd (n = 3, 4) configurations. Stark widths and shifts are presented for an electron density of 1017 cm?3 and temperatures T = 10 000, 20 000 and 50 200 K. As these data cannot be compared to others in the literature, we present an analysis of the different regularities of the values presented in this work.
Internacional	Si
JCR del ISI	Si
Título de la revista	Monthly Notices of the Royal Astronomical Society
ISSN	0035-8711
Factor de impacto JCR	5,521
Información de impacto	Datos JCR del año 2012
Volumen	445
DOI	10.1093/mnras/stu1855
Número de revista	445
Desde la página	1567
Hasta la página	1574
Mes	OCTUBRE
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• Autor: Aurelia Alonso Medina (UPM)
• Autor: Cristobal Colon Hernandez (UPM)

• Creador: Grupo de Investigación: Análisis y Caracterización Óptica de Materiales
• Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada