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Gamma radiation is very high-energy ionizing radiation. Gamma photons have about 10,000 times as much energy as the photons in the visible range of the electromagnetic spectrum. ... Most people's primary source of gamma exposure is naturally occurring radionuclides, particularly potassium-40, which is found in soil and...
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www.stoller-eser.com/Quarterlies/gamma.htm
www.stoller-eser.com/Quarterlies/gamma.htm
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This page describes gamma rays, their properties and health effects. ... In manufacturing, gamma radiation from cobalt-60 or cesium-137 can improve the physical characteristics of materials. For example, exposure to gamma radiation improves the durability of some wood and plastic composites.
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www.epa.gov/rpdweb00/understand/gamma.html
www.epa.gov/rpdweb00/understand/gamma.html
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27, 2005) — Exposure to X-rays and gamma rays, even at low-dose levels, increases risk of cancer. ... It is the seventh report in a series since the 1945 atomic bombings to investigate the effects of low-level radiation exposure. The reports provide U.S. policymakers and health agencies with authoritative risk estimates.
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www.sciencedaily.com/releases/2005/10/051027090539.htm
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What happens to people who have been exposed to a lot of gamma-rays? ... There is some general information concerning radiation exposure, including gamma-rays, at ... Imagine Home | Ask an Astrophysicist | Gamma-ray Exposure...
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imagine.gsfc.nasa.gov/docs/ask_astro/answers/971013b.ht...
imagine.gsfc.nasa.gov/docs/ask_astro/answers/971013b.html
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Page 5; Gamma Radiation ... Like all forms of electromagnetic radiation, the gamma ray has no mass and no charge. Gamma rays interact with material by colliding with the electrons in the shells of atoms. They lose their energy slowly in material, being able to travel significant distances before stopping.
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www.physics.isu.edu/radinf/gamma.htm
www.physics.isu.edu/radinf/gamma.htm
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This provides additional evidence for a direct link between this genetic event and radiation exposure and offers a powerful experimental system for studying radiation-induced carcinogenesis in the thyroid gland.
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jcem.endojournals.org/cgi/content/abstract/90/4/2364
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Relatively limited information, however, is available on the specific genetic alterations underlying cell transformation after radiation exposure. In this respect, thyroid cancer in children after the Chernobyl accident represents the most thoroughly studied population.
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jcem.endojournals.org/cgi/content/full/90/4/2364
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An Army captain who accompanied all test and observer parties into the ground zero area between 1 September and 11 October 1945 received a total gamma exposure of 2.6 roentgens (1). The activities and times of exposure are not known for other personnel with exposures over 2 roentgens.
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www.globusz.com/ebooks/Trinity/00000031.htm
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Ionizing radiation is a well-known risk factor for thyroid cancer in human populations. ... In this study, we demonstrate a dose-dependent induction of RET/PTC rearrangements in human thyroid cells after exposure to 0.1-10 Gy gamma-radiation.
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www.medscape.com/medline/abstract/15671095
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