Shifts of ionized-helium lines from electron collisions in dense plasmas

Journal Article · Sun May 01 04:00:00 EDT 1983 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.27.2566· OSTI ID:6029257

Griem, H R

The semiclassical impact-parameter method is used to calculate shifts of ionized helium lines in the first three spectral series caused by electrons in a plasma. These shifts together with opposite and smaller shifts due to ion quadrupole interactions are in agreement with observed shifts of lines corresponding to the Paschen series of hydrogen. Adding plasma polarization shifts according to the linearized Debye model to the shifts calculated here results in overestimates by a factor of 2 for the shifts of these lines. For lines corresponding to the Balmer series such addition may be consistent with measurements, while for the Lyman series all present theoretical models are found inadequate.

• Research Organization: Laboratory for Plasma and Fusion Energy Studies, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6029257
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 27:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELECTRON-ION COLLISIONS
ELEMENTS
FLUIDS
GASES
HELIUM
IMPACT PARAMETER
ION COLLISIONS
NONMETALS
PLASMA
RARE GASES
SPECTRAL SHIFT