WING FORMULAE FOR STARK-BROADENED HYDROGEN AND HYDROGENIC LINES
Journal Article
·
· Astrophysical Journal (U.S.)
Asymptotic expressions are given for the behavior of Stark profiles at large distances from the line center. For the broadening by ions, the quasi- static approximation is used throughout. Depending on the distance from the line center, the electron contribution is calculated with the usual impact approximation, with a modified impact approximation due to Lewis, or on the far wings of the lines with the qussi-static approximation. The validity regions of the various approximations are delineated, and the errors introduced into previous calculations of complete line profiles by neglecting the Lewis modification are discussed. The requirement that the transitions between the various approximations be smooth leads to a new estimnte for the strong collision term in the impact broadening. (auth)
- Research Organization:
- Univ. of Maryland, College Park and Naval Research Lab., Washington, D.C.
- NSA Number:
- NSA-17-003584
- OSTI ID:
- 4759632
- Journal Information:
- Astrophysical Journal (U.S.), Journal Name: Astrophysical Journal (U.S.) Vol. Vol: 136; ISSN ASJOA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
STARK BROADENING OF HYDROGENIC ION LINES IN A PLASMA
STARK BROADENING OF HYDROGEN LINES IN A PLASMA
Stark broadening of the 1640- and 4686-A lines of ionized helium
Journal Article
·
Thu Jun 01 00:00:00 EDT 1961
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
·
OSTI ID:4092128
STARK BROADENING OF HYDROGEN LINES IN A PLASMA
Journal Article
·
Thu Oct 01 00:00:00 EDT 1959
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
·
OSTI ID:4192338
Stark broadening of the 1640- and 4686-A lines of ionized helium
Journal Article
·
Fri Oct 01 00:00:00 EDT 1976
· Phys. Rev., A; (United States)
·
OSTI ID:7175555