protactinium
1
9.9
- noun
- /ˌproʊtækˈtɪniəm/
- Specialized
:
protactinio
- The scientist explained that protactinium is a short-lived radioactive element found in uranium ores.
Examples
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When extracted from uranium, protactinium decays into actinium over a relatively short period.
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Research conducted in connection with the MSRE showed that protactinium could be extracted from the fluoride carrier salts and then returned to the reactor in the form UF4.
Blog text (11) -
Protactinium, then uranium.
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My father researched the problem for a number of years, and a complete protactinium cycle every 27 days might not be possible for a single fluid reactor.
Blog text (32) -
Or are you suggesting that only for the initial fuel load, and relying on a breeding ratio roughly equal to 1 to keep their systems running without any extraction of fissionables or protactinium required?
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A neutron switches to being a proton, and the atom is transformed into Protactinium 233.
Blog text (32) -
On the other hand, the thorium cycle produces some protactinium-231 (half-life 33,000 years) via the (n, 2n) reaction on Th-232.
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Your views seem close to those of Jung Min Kang and Frank von Hippel, who appear to be unaware of the difficulty of extracting protactinium from liquid fluoride salts.
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Researchers are investigating the properties of protactinium because of its unique radioactive characteristics.
Synonyms
1
9.9
A rare radioactive metal that comes from uranium and slowly turns into lead
A short-lived radioactive metal that forms from uranium and turns into actinium and lead
Surface Forms
Morphology
Etymology
Protactinium comes from the part pro- meaning 'before' and the element name actinium. It was named because this radioactive metal appears 'before' actinium when one element turns into another, so the name helps you remember it is the parent of actinium.