The experiment was divided into three parts. First came the extraction of sufficient quantities of the isotope samarium-146, which does not occur naturally on Earth. For this purpose, tantalum ...

Samarium-146 in the early solar system was probably produced in a nearby supernova as our galaxy was forming about 4.5 billion years ago. Thanks to the isotope’s relatively long half-life, it would ...

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Reducing the oxide with lanthanum can produce samarium metal. Natural samarium is a mixture of several isotopes, three of which are unstable with long half-lives and 21 isotopes of samarium exist.

The approach employed in this study examined variations in the abundance of an isotope of the element neodymium, which is created by the radioactive decay of a different element, samarium.

The study used more sensitive instruments to find a different half-life for samarium, one of the isotopes used to chart the evolution of the solar system. "It shrinks the chronology of early ...

the ratio of the two samarium isotopes in samples collected from Oklo can be used to calculate alpha. A number of studies done since Oklo was discovered have found no change in alpha over time.

The other isotopes of neodymium are formed either by the s-process or in 'core-collapse' supernovae by rapid neutron capture (the r-process). Samarium isotopes also show composition variations ...

The groundbreaking ceremony was held on 20 January (Image: Rosatom) The plant will manufacture products based on iodine-131, samarium-153 and molybdenum-99 isotopes as well as active ...

It says more than 300 people took part. The isotopes to be produced are samarium-153, iodine-131, iodine-125, molybdenum-99 and lutetium-177. They are used for the production of radiopharmaceuticals ...

The prevailing explanation holds that the excess neodymium isotope was originally another element, samarium-146, which decays into neodymium-142, leaving more of it on the planet than there is in ...