Results 251 to 260 of about 1,632,227 (336)

Scintillation Counting of Gamma-Rays

Nature, 1950
WE have investigated the significance of absolute counting-rate in the scintillation measurement of gamma-rays from radium-226, iodine-131, cobalt-60 and sodium-24.
W V, MAYNEORD, E H, BELCHER
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Preparation of 14C-labeled algal samples for liquid scintillation counting

Hydrobiologia, 1983
M. Niemi, J. Kuparinen, A. Uusi-Rauva, K. Korhonen   +3 more
exaly   +2 more sources

Fundamentals of scintillation counting

Seminars in Nuclear Medicine, 1973
The operation of a scintillator detector depends upon the detection of fluorescent radiation emitted from the phosphor following absorption of ionizing radiation. In organic phosphors this fluorescence takes place at the molecular level. In in-organic phosphors the fluorescence is dependant upon the crystal structure and impurities have to be present ...
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Foggy scintillation counting technique

Applied Radiation and Isotopes, 2001
A new "foggy scintillator" was developed for the measurement of low-energy beta-emitters in air. By the use of an ultrasonic wave generator, a liquid scintillator can be converted into the "foggy scintillator". In order to obtain reasonable detection efficiency, it is necessary to prepare a liquid scintillator with a very high concentration of the ...
H, Fujii, M, Takiue
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A new scintillator for liquid scintillation counting

The International Journal of Applied Radiation and Isotopes, 1967
Abstract This report describes the results of investigations carried out with a new scintillator: 2-(4′-t-Butylphenyl)-5-(4″-biphenylyl)-1,3,4-oxdiazole (Butyl-PBD). Counting efficiencies and background counts of variously quenched toluene and dioxane systems containing Butyl-PBD have been compared with similar systems containing PPO and DM-POPOP as ...
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Liquid scintillation counting of blood

The International Journal of Applied Radiation and Isotopes, 1965
Abstract Several methods are compared for liquid scintillation counting of blood samples. The radioactive products are extracted from the blood either directly with the scintillation solvent system “Polyether 611” or with solvents such as dioxane or ethanol. The last-mentioned extracts are counted in a hyamine-Cl-touluene system. Blood contacted with
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Counting Statistics for Liquid Scintillation Counting

Analytical Chemistry, 1961
The way in which the errors associated with individual countings of a sample by liquid scintillation techniques are compounded in the calculation of a net disintegration rate was investigated. The standard deviation of rates calculated from duplicate samples is compared with the standard deviation calculated from a propagation of error equation. At the
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Scintillation counting equipments

Journal of the Institution of Electrical Engineers, 1951
Two types of scintillation counter, employing the VX 5045 multiplier photocell and a phosphor, are described. The alpha scintillation counting equipment is a complete instrument for counting samples of low activity over an area of 10 cm2, at background rates of less than 2 counts per hour.
R.B. Owen, E.A. Sayle
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An apparatus for decontamination of scintillation counting vials

Analytical Biochemistry, 1966
Abstract An apparatus for the rapid and effective decontamination of liquid scintillation vials is described in detail. In the technique presented, only vials which have contained less than 10,000 cpm of C 14 or H 3 are recovered.
M, Drosdowsky, N, Egoroff
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Liquid Scintillation Counting

1979
Carbon —14 and tritium are β− emitting radioisotopes with β− emissions of very low energy which are extremely difficult to detect with any form of window counter, due to self-absorption of the β− particles and their absorption within the counter window.
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