Accession Number:

AD0260388

Title:

RESEARCH ON SOLID STATE RADIATION-INDUCED PHENOMENA

Descriptive Note:

Corporate Author:

WASHINGTON SQUARE COLL NEW YORK UNIV N Y

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

GAMMA RAY-INDUCED FLUORESCENCE OF p-OLIGOPHENYLENES The gamma ray-induced fluorescence of methyl and methoxy substituted p-oligophenylenes is studied. The methyl substitution does not greatly change the fluorescence intensity, but the methoxy substitution greatly enhances the fluorescence in some cases. Introduction of CCl4 as a quencher gives results which differ somewhat from the usual behavior found with other solutes. SIMULTANEOUS LUMINESCENCE AND IMPEDANCE MEASUREMENTS OF ZnS PHOSPHORS UNDER ILLUMINATION WITH X-RAYS, Glow Curves Investigations of the glow curves of ZnS-Ag show that this phosphor has four maxima in conductivity and three maxima in luminescence in the temperature range of liquid nitrogen to room temperature. The luminescence maxima occur at lower temperatures than the conductivity maxima. One conductivity maximum seems to be due to a hole conductivity, thus emptying an activator level. Under excitation at various stable temperatures between liquid nitrogen and room temperature, we lose the shallowest maxima in the glow curves more and more. TEMPERATURE DEPENDENCE OF INTENSITY OF FLUORESCENCE The variation of intensity of fluorescence with temperature was measured for a number of organic solutions. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE