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protactinium::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | atomic number 91, pa, protoactinium |
| Type of | metal, metallic element |
Examples of protactinium
protactinium
This is the largest protactinium-uranium disequilibrium found in any subduction-zone volcano.
From the sciencedaily.com
This results in a slower melting rate, which produces a higher ratio of protactinium to uranium 235.
From the sciencedaily.com
They also point out that protactinium separation already happens, as part of other chemical processes.
From the sciencedaily.com
The resulting protactinium-234 undergoes further beta decay with a half-life of less than 2 minutes.
From the newscientist.com
It is accompanied by a sister process, in which uranium-235 decays into protactinium-231, which has a half-life of 34,300 years.
From the en.wikipedia.org
In Kick'em Jenny lavas, the researchers found there was twice as much protactinium than should be present if the system was in secular equilibrium.
From the sciencedaily.com
If left in the fuel, protactinium would absorb too many neutrons to make breeding with a graphite moderator and thermal spectrum possible.
From the en.wikipedia.org
Other designs propose to use heavy water as a super efficient moderator to improve neutron economy allowing more loss to protactinium absorption.
From the en.wikipedia.org
While uranium is water-soluble, thorium and protactinium are not, and so they are selectively precipitated into ocean-floor sediments, from which their ratios are measured.
From the en.wikipedia.org
- A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
- Protactinium is a chemical element with the symbol Pa and atomic number 91. Its longest-lived and most abundant naturally occurring isotope by far, Pa-231, is a decay product of uranium-235 (U-235), and it has a half-life of 32,760 years. ...
- Symbol:"Pa" Atomic Number:"91" Atomic Mass: 231.04amu. Protactinium is one of the elements in the actinide series of inner transition elements. It may also be classified as a rare earth element. It is a radioactive and unstable element and you will not find it in use anywhere. ...
- P-A. For more information on this and other elements, see The elements. And for fun, see Elements by Tom Lehrer. To see this song with captions, go to The Elements song by Tom Lehrer.
