The specific activities and half lives of americium-241 and americium-243

The unveiled states of americium.

Electrochemical Separation of Curium and Americium

The objective of this project is to develop a method for the separation of Am from Cm based on electrochemical techniques. Electrochemical systems that allow the thermodynamics of actinide and lanthanide complexes to be systematically evaluated and tuned will be examined. The influence of complex formation on the ability to selectively isolate a given species electrochemically will be evaluated...

The metabolism of americium in the rat.

The announcement of the discovery of element 95 was made in 1946 by Seaborg and his associates (1). Like neptunium (element 93), plutonium (element 94), and curium (element 96) this new element, americium, is radioactive and has not been observed in nature in appreciable amounts. During the war an extensive study was made of the metabolic properties of plutonium (2) and several other heavy elem...

Effects of Americium-241 and humic substances on Photobacterium phosphoreum: bioluminescence and diffuse reflectance FTIR spectroscopic studies.

The integral bioluminescence (BL) intensity of live Photobacterium phosphoreum cells (strain 1883 IBSO), sampled at the stationary growth stage (20 h), was monitored for further 300 h in the absence (control) and presence of (241)Am (an α-emitting radionuclide of a high specific activity) in the growth medium. The activity concentration of (241)Am was 2 kBq l(-1); [(241)Am]=6.5×10(-11) M. Paral...

Overview and dosimetry of the Hanford Americium accident case.

Postmortem examinations of selected tissues from an individual who received a massive internal exposure to 241Am and succumbed to pre-existing cardiovascular disease 11 y later are summarized. Significant findings include acellularity of the marrow, marked peritrabecular fibrosis, and a lack of bone surface remodeling, confirmed by bone-surface alpha-spectrometry; tissue concentrations of 241Am...