منابع مشابه
Radioactivity Measurements at Regulatory Release Levels
The OECD is a unique forum where the governments of 30 democracies work together to address the economic, social and environmental challenges of globalisation. The OECD is also at the forefront of efforts to understand and to help governments respond to new developments and concerns, such as corporate governance, the information economy and the challenges of an ageing population. The Organisati...
متن کاملQuality Assurance in Nuclear Medicine Radioactivity Measurements
The paper presents some recent results of the Radionuclide Metrology Laboratory (RML) from IFIN-HH, in the assurance of quality in radioactivity measurements for nuclear medicine. Three aspects are treated: (i) Participation of the RML in the frame of the IAEA Coordinated Research Program (CRP), E 2.10.05; (ii) Improvement of the secondary standard, based on a CENTRONIC IG12/20A ionization cham...
متن کاملRadioactivity Measurements on Glazed Ceramic Surfaces
A variety of commonly available household and industrial ceramic items and some specialty glass materials were assayed by alpha pulse counting and ion chamber voltage measurements for radioactivity concentrations. Identification of radionuclides in some of the items was performed by gamma spectroscopy. The samples included tableware, construction tiles and decorative tiles, figurines, and other...
متن کاملNeutron radioactivity—Lifetime measurements of neutron-unbound states
A new technique to measure the lifetime � of a neutron-radioactive nucleus that decays in-flight via neutron emission is presented and demonstrated utilizing MonteCarlo simulations. The method is based on the production of the neutron-unbound nucleus in a target, which at the same time slows down the produced nucleus and the residual nucleus after (multi-) neutron emission. The spectrum of the ...
متن کاملMeasurements of radioactivity in an industrial dial painting room.
The radiations from radioactive substances can cause severe and lasting damage to living tissue and their effects may, in extreme cases, be lethal. These radiations are divided into three classes, viz. alpha-, betaand gamma-rays, which are given out by radium and thorium and other radioactive elements during their disintegration. Industrial hazards arising from the use of radioactive materials ...
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ژورنال
عنوان ژورنال: American Journal of Physics
سال: 1950
ISSN: 0002-9505,1943-2909
DOI: 10.1119/1.1932685