Luminescent material and preparation and use thereof

Details Luminescent material and preparation and use thereof Luminescent material and preparation and use thereof

1978-08-28

1980-03-25

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250330, 250483, 2523014P, G01T 120, H01J 3150, C09K 1108, G01N 2138

Patent

active

041952260

ABSTRACT:
Pentaphosphates of the formula XP.sub.5 O.sub.14, wherein X is a rare earth metal, respond to incident ionizing radiation by emitting secondary electromagnetic radiation which may be visible or may be made visible by doping with other rare earth metal pentaphosphates or mixtures of Mn and Sb ions. The pentaphosphates of Ce and Pr respond quickly to cessation of incident radiation so that they are used to advantage in scintillators.

REFERENCES:
patent: 3813613 (1974-05-01), Danielmeyer et al.
patent: 3863177 (1975-01-01), Damen et al.
Hewes, "Efficient Infrared Excited Visible Luminescence in Rare Earth Syss," Conf. IEEE, Mar. 22-26, 1970, IEEE International Convention Digest, New York, pp. 70-71.

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