By Alan Martin, Sam Harbison, Karen Beach, Peter Cole
A brand new variation of the UK's regular advent to the risks awarded by means of ionizing radiation and the tools of security and control.
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A brand new variation of the UK's common creation to the risks awarded through ionizing radiation and the equipment of safety and keep watch over.
Extra info for An Introduction to Radiation Protection 6E
Since radioactive isotopes are chemically identical to stable isotopes of the same element, they will follow the same path and be concentrated to the same degree as the non-active isotopes in the body. g. so-called ‘gamma cameras’), the behaviour of the active, and hence by analogy of the ordinary non-active, isotopes of the element may be determined. 4). 4 Radioactive waste The increasing use of radioisotopes and, more particularly, the development of the nuclear power industry results in an ever-growing quantity of radioactive waste.
As already mentioned, the ionization of a gas provides a means of detecting radiation and the ﬁrst widely used radiation unit, the roentgen, was based on the ionizing effect on air of X and g radiation. This unit had several limitations and so two further units, the rad and the rem, were introduced. Later, these two units were replaced in the SI system (Système International d’Unités) by the gray (Gy) and the sievert (Sv), respectively. The gray and the sievert have been approved by the International Commission on Radiation Units and Measurements (ICRU) and used by the International Commission on Radiological Protection (ICRP).
Using a nominal risk coefﬁcient of 5 ¥ 10−2/Sv, calculate the risk from a dose of (a) 5 mSv and (b) 20 mSv. 1 INTRODUCTION Throughout history, man has been exposed to radiation from the environment. This natural background radiation comes from two main sources: cosmic radiation and socalled ‘primordial’ radiation from terrestrial sources. Note that both of these sources can lead to radioactivity within the body. It is impossible to decide whether the natural background radiation has been harmful or beneﬁcial to the development of the human species.
An Introduction to Radiation Protection 6E by Alan Martin, Sam Harbison, Karen Beach, Peter Cole