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Title: Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
University of Illinois, Fusion Studies Lab., Nuclear Engineering Program, Urbana, Illinois
OSTI Identifier:
5552737
Resource Type:
Journal Article
Journal Name:
Nucl. Technol./Fusion; (United States)
Additional Journal Information:
Journal Volume: 1:3
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CARBON DIOXIDE LASERS; ELECTRICAL PUMPING; NUCLEAR PUMPING; CARBON MONOXIDE LASERS; MATHEMATICAL MODELS; EXCITATION; HELIUM; OSCILLATIONS; RADIATION FLUX; SIMULATION; STEADY-STATE CONDITIONS; ELEMENTS; ENERGY-LEVEL TRANSITIONS; FLUIDS; GAS LASERS; GASES; LASERS; NONMETALS; PUMPING; RARE GASES; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Prelas, M A, and Miley, G H. Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/. United States: N. p., 1981. Web.
Prelas, M A, & Miley, G H. Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/. United States.
Prelas, M A, and Miley, G H. Wed . "Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/". United States.
@article{osti_5552737,
title = {Dynamics of the nuclear and electrically pumped 1. 45-. mu. m atomic carbon laser in mixtures of helium + CO and helium + CO/sub 2/},
author = {Prelas, M A and Miley, G H},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5552737}, journal = {Nucl. Technol./Fusion; (United States)},
number = ,
volume = 1:3,
place = {United States},
year = {1981},
month = {7}
}