Accession Number : AD0264879

Title :   RESEARCH ON SOLID STATE RADIATION-INDUCED PHENOMENA

Corporate Author : WASHINGTON SQUARE COLL NEW YORK UNIV N Y

Personal Author(s) : KALLMANN,HARTMUT

Report Date : AUG 1961

Pagination or Media Count : 1

Abstract : Fluorescent Solutions with Short ecay Times: The fluorescence decay times in solution of four substituted p-oligo-phenylenes are reported. The times are found to be shorter than those of other efficient scintillator solutes. Preparation of Organic Mixed Crystals: Mixed crystals were prepared by the Bridgman method. Several clear or almost clear crystals with less than 0.5 weight percent initial dosage of guest substances were obtained for each combination. Distributions of concentrations in the mixed crystals are not homogeneous but increase gradually from the bottom to the top. The middle parts have almost homogeneous concentration but their values are much less than average concentrations. Emission spectra were measured on anthracene-in-naphthalene crystals of various concentrations. Simultaneous Luminescence and Impedance Measurements of ZnS Phosphors under Illumination with X-Rays: Conductivity and light experiments have been continued on two ZnS phosphors, one activated with copper, the other with silver. In addition, conductivity and light experiments have been carried out on a CaF2 phosphor. (Author)

Descriptors :   *SOLID STATE PHYSICS, CHEMICAL REACTIONS, CRYSTAL STRUCTURE, ELECTRICAL CONDUCTIVITY, FLUORESCENCE, INSTRUMENTATION, LUMINESCENCE, ORGANIC COMPOUNDS, POLARIZATION, SCINTILLATION COUNTERS, TABLES(DATA), THERMODYNAMICS, ULTRAVIOLET RADIATION, X RAYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE