Results 211 to 220 of about 195,193 (266)

Preparation of Sources for Alpha Spectrometry

ract, 1966
Summary A simple method is presented for the preparation of alpha sources to be analyzed by an alpha spectrometer equipped with a semi-conductor detector. The procedure consists of evaporating to dryness an aqueous solution of the alpha-emitter, redissolving the residue in situ with 0.1 Ν HNO3, precipitating with 3Ν NH4OH and drying. The
H. W. Kirby, J. J. Dauby
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On the determination of radium by alpha-spectrometry

Journal of Radioanalytical and Nuclear Chemistry, 1997
In order to determine radium in environmental samples by α-spectrometry, the way in which some changes in the chromatographic conditions can affect the purification of the element on cation exchange columns from hydrochloric solutions have been studied.
M. T. Crespo, A. S. Jiménez
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Determination of plutonium by alpha spectrometry

Journal of Radioanalytical and Nuclear Chemistry Articles, 1992
Determination of actinides in the environmental and bioassay samples is important in view of the following factors: increasing energy production by nuclear reactors; environmental contamination due to fallout from nuclear weapons testing and burn up of nuclear-powered satellites; the growing emphasis on the desirability of a cleaner environment; and ...
S. K. Aggarwal, M. K. Saxena, H. C. Jain
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Determination of 226Ra in urine samples by alpha spectrometry

Radiation Protection Dosimetry, 2007
A radiation protection system to assess the internal contamination of workers during decontamination activities in an abounded fertilizer industry in the region of Attika, Greece, has been implemented. This system concerns, among other radionuclides, 226Ra.
K, Kehagia, C, Potiriadis, S, Bratakos, V, Koukouliou, G, Drikos   +4 more
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Characterisation of nasal swab samples by alpha spectrometry

Radiation Protection Dosimetry, 2009
A positive nasal swab taken at a radiation emergency, when properly collected and analysed, is a good indication of a potential inhalation intake. It may be expected to be a useful method for early dose assessment in cases of accidental inhalation of an alpha emitter.
Kumiko, Fukutsu, Yuji, Yamada, Makoto, Akashi   +2 more
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Some educational applications of alpha spectrometry

European Journal of Physics, 1992
The most difficult task in alpha spectrometry is perhaps making the source to be measured, but once sources are prepared, the gathering and analysis of results is an activity which can be developed in undergraduate laboratories. Energy calibration, determinations of counting yield and energy resolution, calculation of areas under the peaks in the ...
M Jurado Vargas, A M Sanchez, F V Tome
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Thorium Isotopic Analysis by Alpha Spectrometry

Radiation Protection Dosimetry, 2001
The technique of alpha spectrometry is used to detect alpha particles and to determine their energy. In this way the technique is able to provide simultaneously quantitative information (i.e. the activity) and qualitative information (the identity) on any radionuclide that emits an alpha particle.
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Determination of boron in glass by alpha-spectrometry

Journal of Radioanalytical and Nuclear Chemistry Letters, 1994
Alpha-spectrometric method has been used for the determination of boron in borosilicate glasses. For irradiation thermal neutrons with a flux of about 105 n·cm−2·s−1, produced in a paraffin moderator surrounding a deuteron target of a small neutron generator, were used.
S. Szegedi, T. Radványi
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Routine alpha-spectrometry of environmental samples

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1987
Abstract A laboratory for routine alpha-spectrometry based on gridded ionisation chambers (80, 500 and 20,000 cm 2 of source area, respectively) has been built for direct measurement of low specific activity samples. They allow direct spectrometry of samples having specific activities as low as 6.7, 2.5 and 0.18 mBq g −1 , respectively.
Štefan Šaro, Miroslav Pikna
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Alpha-spectrometry in nuclear fuel analysis

Journal of Radioanalytical Chemistry, 1974
A survey is given of the analysis of actinide nuclides by means ofa-spectrometry in high-level radioactivity process solutions resulting from reprocessing of spent U-Th fuel. Separation of fission products and isolation of the nuclides228Th,231Pa,232U,237Np and238Pu are performed by adsorption, ion-exchange, extraction chromatography and extraction ...
U. Wenzel, D. Herz
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