Accession Number:

AD0657589

Title:

RESEARCH AND DEVELOPMENT OF CATHODOLUMINESCENT PHOSPHOR WITH HIGH-INTENSITY ULTRAVIOLET EMISSION.

Descriptive Note:

Final rept. 1 Aug 64-31 Jan 66,

Corporate Author:

NATIONAL CASH REGISTER CO DAYTON OHIO RESEARCH DIV

Personal Author(s):

Report Date:

1967-06-01

Pagination or Media Count:

143.0

Abstract:

The objective of the program was to synthesize a cathodoluminescent phosphor with greatly increased ultraviolet emission efficiency in the spectral region between 350 and 400 nanometers for the purpose of writing on photochromic or Kalvar media. Twenty-nine phosphor compositions were studied in at least a preliminary manner and several of these more extensively. Relative to P-16 powder, sprayed films of calcium magnesium silicate cerium showed an average writing efficiency on Kalvar nearly ten times greater in a demountable system. Another sprayed film phosphor, BaZn1.9Mg0.1Si2O7Pb with spectral peak at about 300 nm was shown to be about ten times more efficient than P-16 powder in writing on a spiropyran photochromic film in a demountable system. Demonstration cathode ray tubes were fabricated with the sprayed phosphor films, BaSi2O5Pb, calcium magnesium silicate cerium, and Zn2SiO4Ti, and settled powder P-16 screens incorporated. Phosphors in cathode ray tubes generally were no better than presently available P-16 except for solution sprayed barium silicate lead activated. This phosphor exhibited a relative writing efficiency four times greater than P-16 phosphor on photochromic film.

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Electrooptical and Optoelectronic Devices
  • Miscellaneous Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE