Results 241 to 250 of about 1,458,589 (326)
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Scintillation Counting of Gamma-Rays
Nature, 1950WE 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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Liquid scintillation counting at ambient temperature
Analytical Biochemistry, 1966Abstract Ambient-temperature liquid scintillation counting of aqueous samples of up to 2 ml volume realized effciencies of over 80% for 14 C and 20% for 3 H in a dioxane-naphthalene scintillator. The use of external standardization for rapid determination of counting efficiency is presented together with some characteristics of a newly available ...
T C, Hall, C J, Weiser
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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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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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Liquid scintillation counting of blood
The International Journal of Applied Radiation and Isotopes, 1965Abstract 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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Scintillation counting: Adsorption and solvation problems
Analytical Biochemistry, 1972Abstract Problems were encountered in accurately determining counting rates of basic tritiated compounds in several scintillation cocktails. These difficulties derived from adsorption losses. In addition, a significant difference in counting efficiency for hydrophilic and hydrophobic materials may be detected in some solutions: internal ...
P F, Davison, L P, Andersson
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High-precision 4π liquid scintillation counting
The International Journal of Applied Radiation and Isotopes, 1965Abstract A precise method for the determination of the absolute activity of radioactive solutions by means of liquid scintillation counting is described in detail. The method is based on the extrapolation of the integral spectrum to zero energy. The reproducibility for α- and for β-emitters with a maximum energy higher than 150 keV is generally ...
R, VANINBROUKX, A, SPERNOL
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Counting Statistics for Liquid Scintillation Counting
Analytical Chemistry, 1961The 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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Liquid scintillation counting in nuclear medicine
Seminars in Nuclear Medicine, 1973Many of the radionuclides used in nuclear medicine can be measured by liquid scintillation (LS) counting, and the technique is the only practical approach to counting low-energy β emissions. This review is intended to be a brief exposition of the capabilities of LS counting and of some precautions that should be observed.
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Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2018
M. Uesugi +3 more
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M. Uesugi +3 more
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