Accession Number:

ADA071393

Title:

Advanced Laser Concepts. Addendum. Production of NF Excited States

Descriptive Note:

Final rept. 6 Apr 1976-6 Dec 1977

Corporate Author:

TRW DEFENSE SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s):

• Miller, D. J.

Report Date:

1979-05-01

Pagination or Media Count:

101.0

Abstract:

Experiments are described which use an exclusively chemical system to generate the necessary reagents and energy transfer partners required for production of the a 1 Delta and b 1 Sigma electronic excited states of the NF molecule. The purpose is to assess the potential for the development of an electronic transition chemical laser operating on the NF transitions at wavelengths of 874 nm or 529 nm. In the first of these experiments, staged combustion in a laser cavity is employed by adding a second mixer downstream from the cavity mixer in a conventional, supersonic, diffusion mixing HF chemical laser. This allows for the mixing of F-atoms, H2, and N2F4 the starting reagents required in the NF system. The second set of experiments utilized a tristream HF chemical laser nozzle which allows the three reagents F-atoms, H2, and N2F4 to be mixed in the throat of a supersonic slit nozzle. In both sets of experiments, thermal dissociation of N2F4 was the limitation for the final concentration of NF excited states. In both experiments the quenching of NF excited states is slow.

Descriptors:

• *CHEMICAL LASERS
• *MOLECULAR SPECTROSCOPY
• CAVITY RESONATORS
• COMBUSTORS
• ELECTRON TRANSITIONS
• ELECTRONIC STATES
• LASER PUMPING
• QUENCHING(INHIBITION)
• REACTION KINETICS
• SUPERSONIC NOZZLES

Subject Categories:

• Lasers and Masers
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE