Collisional broadening and shift of neutral argon spectral lines
The collisional self-broadening and shift of neutral argon spectral lines have been determined as a function of atom density N for several lines terminating on either the lower resonance or lower metastable levels. The lines were emitted by a variable-pressure discharge tube equipped with intracapillary thermocouples, and were observed using a pressure-scanned Fabry-Perot interferometer. The line profiles were analyzed using a least-squares fit of Whiting's Voigt function to all profile intensity points. Particular attention was given to the determination of the gas temperature, from which N was calculated. The contribution of nonresonant interactions to the broadening and shift of lines connected to the ground state via resonant transitions was examined using the analysis of Lewis. (AIP)
- Research Organization:
- Sandia Laboratories, Albuquerque, New Mexico 87115
- OSTI ID:
- 7342774
- Journal Information:
- Phys. Rev., A; (United States), Vol. 14:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ARGON
LINE BROADENING
SPECTRAL SHIFT
ATOM-ATOM COLLISIONS
METASTABLE STATES
NEAR INFRARED RADIATION
VISIBLE RADIATION
ATOM COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
EXCITED STATES
INFRARED RADIATION
NONMETALS
RADIATIONS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena
640302 - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory