Astron. Astrophys. Suppl. Ser. 140, 171-176

Measurement of Stark widths in single ionized oxygen

J.A. del Val - J.A. Aparicio - V. González - S. Mar

Send offprint request: J.A. del Val

Departamento de Optica, Universidad de Valladolid, 47071 Valladolid, Spain

Received November 25, 1998; accepted March 23, 1999

Abstract:

Stark widths of 32 OII spectral lines have been measured, for the first time in 16 cases to the authors' knowledge. A pulsed arc was used as a plasma source. The electron density, determined both interferometrically and spectroscopically, covers the range $(2.5-7.5) 10^{22}\,{\rm m}^{-3}$. The electron temperature, determined from Boltzmann-plots, covers the range of 25000-47000 K. Possible dependencies of Stark width on the temperature have been checked. The measured widths are compared both with theoretical and experimental data available in the literature.

Key words: atomic data -- line: profile -- methods: laboratory