Search results
Results from the WOW.Com Content Network
Barium hydroxide is a chemical compound with the chemical formula Ba(OH) 2. The monohydrate (x = 1), known as baryta or baryta-water, is one of the principal ...
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
As the longest-lived radioactive isotope ruthenium-106 has a half-life of only 373.59 days, it has been suggested that the ruthenium and palladium in PUREX raffinate should be used as a source of the metals after allowing the radioactive isotopes to decay. [4] [5] After ten half life cycles have passed over 99.96% of any radioisotope is stable ...
Phase behavior Triple point? K (? °C), ? Pa Critical point? K (? °C), ? Pa Std enthalpy change of fusion, Δ fus H o? kJ/mol Std entropy change of fusion, Δ fus S oJ/(mol·K)
Barium hydroxide ("baryta") was known ... The most stable artificial radioisotope is barium-133 with a half-life of ... Little is known about the long term effects of ...
At first, the mixture was used as-is, both barium and lanthanum together, but this led to unpleasant radioactive contamination that took a long time to disappear as the half-life of barium-140 is 12.5 days. Shortly after, the process was improved; barium was removed chemically, by double precipitation from a solution as barium sulfate. [1]
The longest-lived isomer is 133m Ba, which has a half-life of 38.9 hours. The shorter-lived 137m Ba (half-life 2.55 minutes) arises as the decay product of the common fission product caesium-137. Barium-114 is predicted to undergo cluster decay, emitting a nucleus of stable 12 C to produce 102 Sn. However this decay is not yet observed; the ...
The high short-term radioactivity of spent nuclear fuel is primarily from fission products with short half-life.The radioactivity in the fission product mixture is mostly due to short-lived isotopes such as 131 I and 140 Ba, after about four months 141 Ce, 95 Zr/ 95 Nb and 89 Sr constitute the largest contributors, while after about two or three years the largest share is taken by 144 Ce/ 144 ...