Method of identifying enemy forces

Details Method of identifying enemy forces Method of identifying enemy forces

1974-08-19

1976-01-20

Willis, Davis L.

Radiant energy

Luminophor irradiation

Methods

250461, G01N 2138

Patent

active

039341496

ABSTRACT:
Infiltrators into protected zones are identified by depositing a tacky narrow band fluorescent material, on a perimeter portion of the zone, by illuminating infiltrators of the perimeter with a beam of ultra-violet light and by spectroscopically analyzing a telescopic-received image of the illumination. Most suitably, the fluorescent material is a europium chelate composition, such as europium trifluoracetonate dissolved in acetonitrile and added to an uncatalyzed resin.

REFERENCES:
patent: 3358602 (1967-12-01), Chope
catalog No. 127, Sirchie Finger Print Laboratories, July 11, 1951, p. 45, HV8073 S4 1951.
Marshall, "That New Black Magic", Colliers, Sept. 30, 1944, p. 66, p. 74.

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