Shifts of Hydrogen Lines from Electron Collisions in Dense Plasmas

Phys. Rev. A 28, 1596 (1983)https://ireap.umd.edu/10.1103/PhysRevA.28.15961983Journal ArticlePlasma, Accelerator, and Nuclear Physics

The semiclassical impact-parameter method is used to calculate shifts of Lyman and Balmer lines from levels caused by electrons in a dense plasma. Comparison with measurements and estimates of shifts due to ion quadrupole interactions indicate that shifts from distant electron-atom collisions are the major cause of observed shifts of Balmer lines. Blue shifts from ion-atom quadrupole interactions are relatively small for low series members.