Radiometric Screening of Red Phosphorus Smoke for its Obscuration Characteristics

  • G. K. Gautam High Energy Materials Research Laboratory, Pune
  • A. D. Joshi High Energy Materials Research Laboratory, Pune
  • S. A. Joshi High Energy Materials Research Laboratory, Pune
  • P. R. Arya High Energy Materials Research Laboratory, Pune
  • M. R. Somayajulu High Energy Materials Research Laboratory, Pune
DOI: https://doi.org/10.14429/dsj.56.1903
Keywords: Smoke screen, pyrotechnic compositions, red phosphorus, obscuration characteristics, radiometric screening

Abstract

Red phosphorus and potassium nitrate-based compositions exhibit favorable smoke screen
formation with high obscuration characteristics at low oxidiser content. The rapid vaporisation
of excess red phosphorus at higher flame temperature leads to quick aerodispersion. The
obscuration characteristics are due to formation of P2O5 and subsequent reaction with moisture/
humidity in the atmosphere. Obscuration increases with increasing humidity. Extinction coefficient,
the shadow cast per unit mass of the composition, is higher in visible and comparatively lower
in far infrared.
Published
2006-07-01
How to Cite
Gautam, G., Joshi, A., Joshi, S., Arya, P., & Somayajulu, M. (2006). Radiometric Screening of Red Phosphorus Smoke for its Obscuration Characteristics. Defence Science Journal, 56(3), 377-381. https://doi.org/10.14429/dsj.56.1903
Issue
Vol 56 No 3: High Energy Materials
Section
Special Issue Papers
Copyright (c) 2016 Defence Science Journal

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