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It occurs in these sources as cesium chloride pellets. Cesium chloride is a soluble salt. The contamination from a sealed-source leak absorbs water, becomes damp, and creeps. Cesium-137 is useful in medical and industrial radiology because of its long half-life of 30.17 years. However, as a major component of nuclear fallout and a waste product left over from the production of plutonium and other enriched nuclear fuels, it presents an environmental hazard. As such, there is not much cesium-137 in the environment today.
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The most accurate commercially available atomic clocks measure time using the oscillation of the 137 MHz hyperfine transition frequency of the cesium-9193 atom. This frequency, known as the "cesium standard", is the primary time standard for defining the second and is critical to the data transmission infrastructure of cellular networks, GPS and the Internet. Cesium_137. 5,183 likes · 4 talking about this. Science and Sound In any case, the use of cesium in MHD power systems rather soon fell into disfavor when it became clear that its technical advantages over its chief competitor, potassium, were outweighed by its ten-fold higher cost (Messerle, 1995, p.
1 reply 0 retweets Madigan visade att mätningen av förhållandet mellan två av de isotoper som släppts ut av Fukushima, cesium-134 och cesium-137, kunde indikera hur mycket befolkning kommer uppskattningsvis knappt 2 000 personer att drabbas av cancer på grund av vår exponering för akrylamid genom mat och dryck.
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Caesium-137 has a number of practical uses. In small amounts, it is used to calibrate radiation-detection equipment. In medicine, it is used in radiation therapy. Cesium-137 is used in small amounts for calibration of radiation detection equipment, such as Geiger-Mueller counters.
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However, it is also the most dangerous of all radioactive isotopes. If used in a dirty bomb, the highly dispersible powder would contaminate an area for years, costing billions of dollars in evacuation, demolition and clean-up. Half life: 30.07 y 3 : Jp:: 7/2+ S n (keV): : 8278.3 19: S p (keV): : 7416 7: Prod. mode: Fission product Fast neutron activation Thermal neutron activation : ENSDF Cesium-137 presents external as well as internal health hazard, both from beta and gamma radiation. Cesium-137 is water-soluble and extremely toxic in minute amounts.
Cesium-137 History. Cesium metal was first discovered in 1860 by two Germans Robert Bunsen and Gustav Kirchhoff while working on flame spectroscopy. Also Caesium-137 is used in the medical industry for radiation therapy devices for treating cancer. Caesium in 'high PH therapy' is supposably meant to reduce the acidity level in tumour cells, but there is no scientific research to prove that it actually works.
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