Accession Number:

ADA000928

Title:

On a Gasdynamic Recombination Laser.

Descriptive Note:

Final rept. Oct 72-Sep 73,

Corporate Author:

ADERAM-ASSIPRA MARSEILLE (FRANCE)

Personal Author(s):

• Wilson,Jack

Report Date:

1973-11-01

Pagination or Media Count:

47.0

Abstract:

The possibility is discussed of a gasdynamic laser using dissociation as the frozen mode, rather than vibration, and which would lase following recombination. Such a laser has the potential of high power, high efficiency, and visible wavelengths. Several reactions are considered, and recombination to form molecular bromine, chlorine and nitrogen dioxide were considered most suitable. Calculations of expected gain are presented. Unfortunately rapid deactivation by atoms destroys the promise of the chlorine and bromine systems. Experiments performed in a shock tunnel generated no laser action in either chlorine or nitrogen dioxide. Recombination to molecular oxygen does not suffer from deactivation by atoms, but has too low a gain to achieve laser action in the apparatus available.

Descriptors:

• *CHEMICAL LASERS
• *GAS DYNAMIC LASERS
• GAIN
• FRANCE
• DISSOCIATION
• CHLORINE
• BROMINE
• SHOCK TUBES
• MOLECULAR ENERGY LEVELS

Subject Categories:

• Lasers and Masers
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE