Stark Broadening of the B III 2s-2p Lines
Hans R. Griem, Yuri V. Ralchenko, Igor Bray
Abstract
We present a quantum-mechanical calculation of Stark line widths from electron-ion collisions for the 2s1/2-2p1/2,3/2, lambda = 2066 and 2067 A, resonance transitions in B III. The results confirm the previous quantum-mechanical R-matrix calculations but contradict recent measurements and semi-classical and some semi-empirical calculations. The differences between the calculations can be attributed to the dominance of small L partial waves in the electron-atom scattering, while the large Stark widths inferred from the measurements would be substantially reduced if allowance is made for hydrodynamic turbulence from high Reynolds number flows and the associated Doppler broadening.
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