Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/
The first successful modeling of an impurity-type nuclear pumped laser (NPL) (i.e., one that employs trace densities of the lasing species in a noble gas buffer), atomic carbon at 1.45 ..mu..m, was achieved. Such NPLs are important due to their low flux threshold and quasi-steady-state oscillation. The atomic carbon NPL is unique in that time delays up to 5 ms are observed between the laser signal and the excitation pulse in helium + CO/sub 2/ mixtures while no delay is observed in helium + CO. Using a kinetic model in conjunction with an experimental program, we show that this difference in delay arises from slow dissociation of CO/sub 2/ to form CO. Significantly, the model also successfully simulates electrical pumping of He-CO or CO/sub 2/ mixtures.
- Research Organization:
- University of Illinois, Fusion Studies Lab., Nuclear Engineering Program, Urbana, Illinois
- OSTI ID:
- 5552737
- Journal Information:
- Nucl. Technol./Fusion; (United States), Journal Name: Nucl. Technol./Fusion; (United States) Vol. 1:3; ISSN NTFUD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
CARBON MONOXIDE LASERS
ELECTRICAL PUMPING
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GAS LASERS
GASES
HELIUM
LASERS
MATHEMATICAL MODELS
NONMETALS
NUCLEAR PUMPING
OSCILLATIONS
PUMPING
RADIATION FLUX
RARE GASES
SIMULATION
STEADY-STATE CONDITIONS