Date: 10/20/14 Angineh A. Zohrabi GE150 Unit 5 Assignment 1: Radioactive Tracing Technology Radiation facts and health effects Radiation is a form of energy. It comes from man-made sources such as x-ray machines‚ from the sun and outer space‚ and from some radioactive materials such as uranium in soil. Radiation travels as rays‚ waves or energetic particles through air‚ water or solid materials. Radioactive materials are composed of atoms that are unstable. As unstable atoms become stable‚ they
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Power Note: nuclear power works by radioactivity “Radioisotopes are naturally occurring or synthetic radioactive form of an element. Most radioisotopes are made by bombarding a stable element with neutrons in the core of a nuclear reactor. The radiations given off by radioisotopes are easy to detect. Most natural isotopes of relative atomic mass less than 208 are not radioactive. Those from 210 and up are all radioactive.”(Radioisotope - Hutchinson Encyclopedia) (Radioisotopes image) An example
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work with radioisotopes due to the safety concerns. There is a risk of radiation when working in close contact with the nuclear reactions. This is because radioisotopes release radiation when they are being produced. Radiation has the power to detach an electron from an atom‚ which can lead to destruction and mutation of cells. Since radiation has this ability‚ and humans are composed of many cells‚ if there is enough radiation exposure‚ it can cause serious harm to health. One more drawback of radioisotopes
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we learned that there are 7 types of radiation of the electromagnetic spectrum – gamma rays‚ x-rays‚ ultraviolet‚ visible spectrum‚ infrared‚ microwaves and radio waves. With different wavelengths‚ they each have different properties and uses. Gamma rays are the radiation with the smallest wavelengths – 10-12m to 10-10m – and the most energy and the most danger of any wave in the electromagnetic spectrum. Radiotherapy‚ a treatment the use of high-energy radiation‚ is the most well-known way of how
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life of just over 8 days‚ emits beta particles and gamma rays as it decays. This half life is long enough for it to be transported form where it is produced to where it needs to be used but it is also short enough to minimise patients exposure to radiation It decays into non-radioactive gas‚ Xenon 131‚ which can easily escape without interfering bodily functions Beta particles can destroy abnormal tissue. Gamma rays allow external imaging to ensure target has been reached Question 19 (7 marks) Name
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Radiography is the most familiar type of radiation technique and it uses electromagnetic radiation instead of visible light and this type uses the smallest amount of radiation. Electromagnetic radiation is produced when charged particles of sufficient energy hit a material. Computerized Tomography commonly known as a CT scan‚ during this procedure the patient ties on the table and enters a ring-shaped scanner and this type uses the highest dose of radiation because so many images are taken at once
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Transuranic Elements and their Production Transuranic elements are elements that have an atomic number greater than 92. Transuranic elements have been synthesised in nuclear reactors or in high-energy particle accelerators. Neptunium and plutonium were the first transuranic elements to be synthesised in 1940 by Glenn Seaborg’s research team in the USA. Uranium 238 is bombarded with neutrons produced by the nuclear fission of U-235. Initially an isotope of uranium (U-239) forms which decays
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The PET scan‚ or Positron Emission Tomography‚ was born in 1973 at Washington University. It was created by Edward Hoffman‚ Michael M. Ter-Pogossian‚ and Michael E. Phelps; Phelps is most often credited with the invention (History of PET and MRI‚ 2009). In preparation for a PET scan‚ radioactive tracers are injected into the body‚ inhaled‚ or ingested by the patient through a solution that they drink. Then the scan will actually begin‚ as the patient lies on a table‚ which glides into the machine
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before the age of 35 increase their risk for basal or squamous skin cancer by 75 percent. Prevention from getting these types of skin cancer include applying sunscreen whenever under harsh sun conditions and not exposing skin to man-made ultraviolet radiation sources‚ for example‚ tanning beds. When in the developing years‚ the skin is more prone to being damaged‚ which is why it is important to prevent teens and young adults from excessive UV exposure. If youths are prohibited from the tanning bed industry
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Radioactive Isotopes Radioactive isotopes are any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha‚ beta‚ and gamma rays. Every chemical element has one or more radioactive isotopes. More than 1‚000 radioactive isotopes of the various elements are known.. Approximately 50 of the isotopes are found in nature; the rest are produced artificially as the direct products
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