natural radioactivity


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Related to natural radioactivity: nuclear fission, artificial radioactivity

natural radioactivity

[′nach·rəl ‚rād·ē·ō·ak′tiv·əd·ē]
(nucleonics)
Radioactivity exhibited by naturally occurring radionuclides.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Regan, "Study of natural radioactivity in riverbank soils along the Chao Phraya river basin in Thailand," Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol.
Abd El-Mageed, "Natural radioactivity and their radiological effects for different types of rocks from Egypt," Radiation Physics and Chemistry, vol.
Natural radioactivity of [sup.226]Ra, [spu.232]Th, and [sup.40]K in different types of fertilizers used in Egypt and in Japan was measured using a high purity germanium detector.
Hussein Natural radioactivity levels in environmental samples in north western desert of Egypt.
Azarvand [7], in determinant of natural radioactivity measurements in environmental samples of Sungun mining, Iran, showed that the amount radioactive elements, especially K40, in many parts of the region is higher than world average provided by UNICER (2000).
Preliminary reports on the determination of natural radioactivity levels in the State of Qatar and a report on the determination of the natural radioactivity levels in northwest of Dukhan (an area known for its oil fields) in the State of Qatar, have been earlier (Al-Sulaiti et al., 2012; 2011; 2010; Nasir et al., 2012).
The temporal trends of natural radioactivity during the months of August and December are compared in Figure 3.
The presence of radioactive nuclides in water is due to the deposition from atmosphere, leaching from soils and rock courses formed from dissolved [sup.226]Ra and [sup.222]Rn.The activity concentration of radioactive nuclides reported from these regions are within the limit.Natural radioactivity forms a significant part of the total activity in the environment whereas anthropogenic activities have introduced significant amounts and usually their influence is limited to the near locality of their introduction.Understanding natural radioactivity will enable us to check or limit the toxicity and hence risk to the individual and society of such exposed.
Bacteria may survive in this low-productivity zone by consuming oxygen very slowly or by relying on natural radioactivity for energy.
PNRA is continuously performing environmental monitoring throughout the country to assess any change in natural radioactivity level.

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