Accession Number:

AD0632484

Title:

SOME EXPLORATORY EXPERIMENTS ON LASER EXPLOSIONS IN PSEUDO-AIR,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1966-03-01

Pagination or Media Count:

31.0

Abstract:

A Q-switched ruby laser, which cannot explode air directly, has been used to explode various pseudo-air targets. These targets have been, generally, air with increased electron densities, such as a drop of liquid nitrogen or an air-plasma caused by a spark gap. Water drops, to which were added various salts, were also targets in evaluating the feasibility of salting targets. The results consisting of open-shutter photographs, time-integrated spectra, and some photodiode records with micro-second resolution suggest that 1 twelve spectral lines are found common to nearly all the targets identification suggests that these lines originate in the air surrounding the targets 2 the structure of the spectrum resulting from laser interaction with a drop of liquid nitrogen has marked similarity to the structure of lightning spectra further, most of the twelve lines common to nearly all spectra appear in lightning spectra 3 the luminous phenomena occur over times like micro seconds from the laser pulses of duration like tens of nanoseconds 4 further experiments with nanosecond -to-shake time resolution are needed to clarify the explosion details. Author

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Lasers and Masers
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE