Measured stark widths in the O III spectrum

Abstract

Stark widths (W) of 23 doubly ionized oxygen (O III) spectral lines belonging to the ten highest multiplets in the 3s-3p and 3p-3d transitions have been measured in the optically thin oxygen plasma created in a linear, low-pressure, pulsed arc discharge at a 42 000 K electron temperature and 1.65 × 1023m-3 electron density. They are not measured before and four (295.969, 311.567, 312.163 and 313.279 nm) of them in the two multiplets (3p 1P - 3d 1Do and 3p 3S - 3d 3Po) are the first data in this field. In four multiplets (3p 1P - 3d 1Do, 3p 3S - 3d 3Po, 3p 5Do - 3d 5F and 3s 5P - 3p 5So) our W are the first measured data.