Collisional broadening of the Balmer-. cap alpha. transition of H and He/sup +/ in plasmas

Journal Article · Fri Jan 15 04:00:00 EST 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.37.531· OSTI ID:5647097

Oza, D H; Greene, R L; Kelleher, D E

We have computed the Stark-broadened width of the H/sub ..cap alpha../ transition of neutral hydrogen (n/sub e/ = 10/sup 15/--10/sup 17/ cm/sup -3/)= and singly ionized helium (n/sub e/ = 10/sup 17/--10/sup 18/ cm/sup -3/)= at several plasma temperatures. Our calculations include dynamical contributions of perturbing ions, which dominated the widths of this important transition, particularly at lower electron densities. We compare our results for neutral hydrogen with experimental results over a span of two decades in electron density (n/sub e/), and excellent agreement is obtained.

• Research Organization: Center for Radiation Research, National Bureau of Standards, Gaithersburg, Maryland 20899
• OSTI ID: 5647097
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 37:2; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BALMER LINES
CHARGED PARTICLES
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELEMENTS
EMISSION SPECTRA
HELIUM IONS
HYDROGEN
IONS
LINE BROADENING
NONMETALS
PLASMA
SPECTRA
STARK EFFECT
TEMPERATURE DEPENDENCE