| It was the first commercial manufacturer of plutonium and americium neutron sources for oil well, logging and other applications. |
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| Release of plutonium, americium and curium could occur from laboratory or industrial accidents. |
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| Kept secret until after the war, they were respectively called americium and curium. |
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| In a cyclotron particle accelerator, researchers fired an isotope of calcium at a target of americium. |
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| When americium was used as a target in this research, evidence for the formation of a new element was obtained. |
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| Many smoke detectors in North American homes and other buildings use americium as an ionization source to detect smoke from fires. |
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| Although americium is radioactive, it is present in such negligible amounts in smoke detectors that it is not considered to pose a hazard. |
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| Alpha particles emitted by the americium ionize the air, making the air conductive. |
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| Internal contamination with plutonium, americium, or curium can occur through a variety of routes including ingestion, inhalation, or direct contact through wounds. |
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| Some like americium, iodine 129 or cesium 135 can remain several hundred millenia. |
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| Metallic californium has been prepared and is structurally similar to metallic americium, curium, berkelium, and most lanthanoid metals. |
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| Beginning with americium, however, the electron energy levels seem to be sufficiently separated so that mixing does not occur. |
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| Those that do not, such as technetium and americium, have been substituted, respectively, by rhenium and neodymium, which have similar traits. |
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| Although plutonium isotopes and americium 241 will persist perhaps for thousands of years, their contribution to human exposure is low. |
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| A truck transporting 900 smoke detectors containing americium sources was entirely destroyed by a fire on the A31 motorway. |
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| Several, such as plutonium and americium, if ingested, migrate to the bone marrow, where their radiation interferes with the production of red blood cells. |
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| Under certain conditions, for example, actinium, americium, curium, berkelium, and californium metals have the same crystal structure, as do many of the lanthanoids. |
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| These results are critical in understanding the equation-of-state of americium, and in making comparisons to the latest theories that attempt to predict the cohesive energies and atomic volumes of the actinide elements. |
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| Plutonium, caesium and americium are three long-lasting radioactive chemicals released into the sea from Sellafield. |
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| Another option is that of partitioning and the transmutation of the long-lived actinides, americium, curium and neptunium. |
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| The waste also contains radioactive isotopes of the transuranic elements neptunium, americium, and curium. |
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| Assessment of the exposure pathways in the uptake and distribution of americium and cesium in cuttlefish at different stages of its life cycle. |
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| A release of radioactive material often results in the formation of small particles consisting of uranium oxide matrix containing trace amounts of plutonium and americium. |
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| Waste from nuclear weapons decommissioning is unlikely to contain much beta or gamma activity other than tritium and americium. |
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| While other material such as separated americium and neptunium could also be made subject to an FMCT, this would require additional consideration with respect to an approach to verification. |
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| By bombarding a thin film of americium with calcium ions, the research team was able to measure photons in connection with the new element's alpha decay. |
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| West Lake's thorium-230 and actinium-227 have been ranked along with plutonium, americium and neptunium as among the most radioactively dangerous materials known. |
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| They last only 10 years and contain radioactive Americium 241, so send dead ones back to the manufacturer. |
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| Other nuclear materials such as Americium 241, which is found in modern smoke detectors, emit a much higher gamma radiation and is much more abundant. |
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