The safety and security risk posed by highly radioactive, long-lived sources at the end of their normal use has not been consistently well-managed in previous decades. The Brazilian Cs-137 accident in 1986 and the Thailand Co-60 accident in 2000 are prime examples of the consequences that ensue from the loss of control of highly dangerous sources after their normal use. With the new internation...

A quasi-exactly solvable model is one for which it is possible to solve the Schrödinger equation exactly for a finite portion of the energy spectrum [1]. In quantum chemistry, a famous example of this is the Hooke’s law atom [2–5], which consists of a pair of electrons, repelling Coulombically but trapped in a harmonic external potential. This model and others [6–12] have been used extensively ...

Concentration of radioactive isotopes in honey constitutes an important bioindicator of environmental radiation. One hundred six honey samples were collected from hives and from bottled honey provided by beekeepers from north-eastern Poland in 2010, before the Fukushima accident, and during the two-year period directly following this catastrophe (2011-2012). Cesium-137 (Cs-137) and potassium-40...

Measurements of fallout radioactivity in Greenland in 1977 are reported. Strontium-90 (and Cesium-137 in most cases) was determined in samples of precipitation, sea water, vegetation, animals, and drinking water. Estimates are given of the mean contents of 90Sr and 137Cs in the human diet in Greenland in 1977.

Data from published studies and World Wide Web sources were combined to develop a regression model to predict (137)Cs concentration ratios for saltwater fish. Predictions were developed from 1) numeric trophic levels computed primarily from random resampling of known food items and 2) K concentrations in the saltwater for 65 samplings from 41 different species from both the Atlantic and Pacific...

Hreinn Stefansson1,3, Agnar Helgason1,3, Gudmar Thorleifsson1, Valgerdur Steinthorsdottir1, Gisli Masson1, John Barnard2, Adam Baker1, Aslaug Jonasdottir1, Andres Ingason1, Vala G Gudnadottir1, Natasa Desnica1, Andrew Hicks1, Arnaldur Gylfason1, Daniel F Gudbjartsson1, Gudrun M Jonsdottir1, Jesus Sainz1, Kari Agnarsson1, Birgitta Birgisdottir1, Shyamali Ghosh1, Adalheidur Olafsdottir1, Jean-Bap...