Weinberg long promoted the ORNL-designed molten salt reactor experiment (MSRE) based on Glenn Seaborg’s 1942 discovery using a cyclotron that bombarding thorium with neutrons that eventually yields ...

Thorium-232 (Th-232) absorbs a neutron, transmuting it into Th-233. Th-233 beta decays to protactinium-233 (Pa-233), and finally undergoes a second beta minus decay to become uranium-233 (U-233).

It was not until the twentieth century before protactinium was first discovered. Of course it depends on what one really means by the discovery of an element. Does it mean somebody realizing that a ...

Protactinium has been, since 1949, shorthand for 'protoactinium'. The name describes its decay to actinium ('proto' is Greek for 'first'). The element was identified by Kasimir Fajans and Otto H ...

Uranium (chemical symbol U) is a naturally occurring radioactive element. In its pure form it is a silver-coloured heavy metal, similar to lead, cadmium and tungsten. Like tungsten it is very dense, ...

He worked in a spirit of close academic friendship with Dr. Lise Meitner from 1907 to 1938 (at the KWI from 1913), above all on beta rays; in 1918 they jointly discovered protactinium, and uranium Z ...

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