https://doi.org/10.1140/epjd/e2010-10506-3
Study of the parameters of the He(3 3S)-He(2 3P) line *
1
Observatoire de Paris, GEPI, UMR 8111, CNRS, Université Paris VII, 61 Avenue de l'Observatoire, 75014 Paris, France
2
Institut d'Astrophysique de Paris, UMR7095, CNRS, Université Paris VI, 98bis Boulevard Arago, Paris, France
3
G2E.lab, Laboratoire de Génie Électrique, UMR 5269, CNRS, Université Joseph Fourier, 25 rue des Martyrs, 38042 Grenoble, France
Corresponding author: a nicole.allard@obspm.fr
Received:
14
September
2010
Revised:
13
November
2010
Published online:
14
January
2011
We have observed emission spectrum in dense plasmas of helium excited by a corona discharge at 706.69 nm. In continuation of an analysis of spectra obtained in gaseous helium at 300 K, we report on a study of the line parameters of the observed spectra. We discuss the major importance of temperature and perturber density in the broadening, shift and asymmetry measured from calculated profiles within a unified line shape semi-classical theory. The comparison is done with existing data derived from experimental spectra at 300 K. The theoretical work is extended at lower temperatures down to 40 K.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011