But there is a catch: the ytterbium clock is still not as accurate
as the caesium one.
«Leakage is occurring and isotopes such
as caesium - 137 accumulate in the food chain.»
Molten salt from the electro - refining, which contains only fission products such
as caesium and strontium, is mixed with cement for storage.
This is fissile, and splits into lighter fragments, including isotopes such
as caesium - 137, with a half - life of 30 years, and strontium - 90, with a 25 - year half - life.
It was previously thought that only volatile, gaseous radionuclides such
as caesium and iodine were released from the damaged reactors.
Uranium and other radioactive materials, such
as caesium and technetium, have been found in tiny particles released from the damaged Fukushima Daiichi nuclear reactors.
Not exact matches
At Fukushima Daiichi, only the volatile elements, such
as iodine and
caesium, are bubbling off the damaged fuel.
Similarly, says Wotawa,
caesium - 137 emissions are on the same order of magnitude
as at Chernobyl.
A new generation of atomic tickers, known
as optical clocks, have just wrested the record for accuracy from the ensembles of oscillating
caesium atoms that held it for half a century.
Hills and uplands in Wales and northwestern England could soon turn from green to navy blue
as scientists try to «lock up» radioactive
caesium deposited by rain after the Chernobyl disaster.
Caesium concentrations in plants growing in areas treated with the potassium salt fell sharply, but the substance also acted
as a fertiliser.
Jessen's team searched for signs of chaos within a set of cooled
caesium atoms, using them
as the quantum equivalent of an everyday object that displays chaotic behaviour — a child's spinning top.
Ruff, who was in Paris last week
as part of a last - ditch attempt by members of International Physicians for the Prevention of Nuclear War to stop the tests, says that 60 underground tests have been carried out by the French since the 1983 scientific visit and that in 1987 scientists found
caesium - 137 on Mururoa.
After 45 days, this group was reported
as having improved immune function, and most notably «spirulina was particularly efficient at deactivating radioactive
caesium from their bodies.»
The
Caesium Blue paint is special to the F - Pace First Edition, although it will be available on other trims
as a special order.
Iodine - 131's half - life is 8 days, so it is so not worrying
as the releases of
Caesium 137, which has a 30 year half life.