[Development of scintillators for alpha- and beta-rays -comparison of relative luminescence of scintillation and photoluminescence of various phosphors (author's transl)].
Relative scintillation efficiencies of various phosphors such as ZnS, ZnCdS and Zn2SiO4 under excitation by alpha-rays from 210Po, beta-rays from 90Sr-90Y were compared with those excited by 365 nm (3650A) UV light. The influence on the structure, mixture rate, firing atmosphere and firing temperature of phosphors on the efficiency were noted. THe results were as follows: (1) ZnS type phosphors generally showed the highest efficiencies under all types of excitation examined. (2) Among ZnS: Cu type phosphors, the specimen fired at 1100 degree C was the most efficient under the three types of excitation. (3) A highly efficient phosphor in photoluminescence was not always efficient in scintillation. (4) The addition of a flux was generally effective for scintillation as for photoluminescence. (5) The phosphors fired in H2S showed a lower efficiency than those fired in air on N2 in both scintillation and photoluminescence.
D000512:Alpha Particles; D004583:Electrons; D006862:Hydrogen Sulfide; D008163:Luminescent Measurements; D009584:Nitrogen; D011059:Polonium; D011839:Radiation, Ionizing; D012588:Scintillation Counting / Q000295:instrumentation; D013326:Strontium Radioisotopes; D013431:Sulfates; D013696:Temperature; D014466:Ultraviolet Rays; D015021:Yttrium Radioisotopes; D015032:Zinc; D019287:Zinc Sulfate
D013326:Strontium Radioisotopes; D013431:Sulfates; D015021:Yttrium Radioisotopes; D019287:Zinc Sulfate; D011059:Polonium; D015032:Zinc; D009584:Nitrogen; D006862:Hydrogen Sulfide