From then on, it is the actinides (specifically, isotopes of plutonium, americium
, and curium) that will contribute most to radioactive decay heat.
Biokinetics of neptunium, plutonium, americium
and californium in phytoplankton.
Seaborg was issued a patent on an element he discovered and named Americium
The Plutonium and Americium
(which decays into plutonium) in the discharges have been found not to disperse, but to concentrate in the fine cohesive sediments of the Irish Sea.
These long-lived radionuclides , called minor actinides (elements like americium
, curium, neptunium), have to be separated from the spent fuel to be placed in a specific reactor for transmutation.
During the initial tests done in this study, the radiation was provided by an Americium
241 source instead of an x-ray source.
In this study, a PERALS[R] spectrophotometer in combination with a new extractive scintillation cocktail was used in the detection of plutonium, americium
, thorium, and uranium isotopes in water and simulated wastewater samples.
It found that the levels of plutonium and radioactive americium
"detected at Lowry Landfill are 10 to 10,000 times greater than the average or maximum background levels reported for Rocky Flats," the notorious nuclear weapons plant near Boulder.
Products of the project included maps of the americium
, cesium, potassium, uranium and thorium concentrations in the area of the nuclear facility.
Thanks to Weber's tip, David extracted the americium
components and then welded them together with a blowtorch.
Nuclear Regulatory Commission sent inspectors to investigate because the gauge was crushed, exposing the gauge's radioactive elements - cesium and americium
Many people forget that every radioactive element decays and that a smoke detector has a finite lifetime (the "good until" date usually stamped in the plastic case) beyond which the remaining amount of radiation from the americium
is too low to activate the smoke detector.