HSCI 20200 Lecture Notes - Lecture 19: Food Preservation, Nuclear Power, Medical Diagnosis
9 Nov 2016
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Document Summary
Historical development and basic concepts of radiation protection. Topics: health physics, historical events, the atoms for pease era, types of radiation, radioactivity and radiation dose, natural background, radiation risk perception and reality. Devoted to protecting people and the environment from radiation hazards. Benefit from technology that uses radiation or radioactive materials. Ionizing radiation energy in form of particles or waves given off by unstable atoms or accelerated charged particles. Radioactive material any material which emits ionizing radiation. Radiation producing device any man-made device that produces ionizing radiation. Atoms for peace and the beneficial uses of radiation. Medical diagnosis and therapy: cat scans & pet scans, cancer treatment, x-rays. Nuclear power supplies ~20% of the country"s electric power. Nuclear power does not release greenhouse gasses. Radiation with enough energy to remove an electron from its atom. Taking into account radiation type: equivalent dose, absorbed dose * radiation weighting factor, radiation factor for x-rays, gamma-rays, beta particle is 1.
