Quantum mechanical calculations for the electron impact broadening and shift of some lines of neutral helium in a hot plasma

In this paper we apply the quantum mechanical formalism developed by Bassalo and Cattani to calculate the broadening and shift produced by electronic collisions of some lines (5876, 5048, 5015, 4713, 3964, and 3889 A) of neutral helium in a plasma. The effect of the ions are also taken into account. Our theoretical predictions are compared with the experimental results of Boetticher et al. and with the semiclassical estimates of Griem et al. (author)