Stark width and shift of the Pα He II (468.59 nm) spectral line have been measured in helium plasma. A linear low-pressure arc is used as a plasma source. Measurements have been done at electron density in the range from 0.4 to 3.3×1022m-3 and at an electron temperature of 40000K. Measured Stark width and shift are compared to some theoretical estimations combining electron-impact and ion quadrupole effects.
Bulletin Astronomique de Belgrade
- Pub Date:
- July 1994
- Stark Effect: Helium Lines;
- Stark Effect: Plasma