Radio-lead stew anyone?

This area is for discussions involving any fusion related radiation metrology issues. Neutrons are the key signature of fusion, but other radiations are of interest to the amateur fusioneer as well.
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Richard Hull
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Radio-lead stew anyone?

Post by Richard Hull » Sun Apr 19, 2020 7:14 am

An interesting and humorous little item with references. In PDF format.

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Hevesy Stew final.pdf
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Rich Feldman
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Re: Radio-lead stew anyone?

Post by Rich Feldman » Mon Apr 20, 2020 3:46 pm

Thanks, Richard. Good analysis of exactly which kind of radio-lead goes with the stew anecdote.

I hadn't previously heard of Hevesy, a great enough radiochemist to have been honored with a Nobel prize. The man with longest forehead in this picture.
hevesy.jpg
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He was working at Niels Bohr's institute in Copenhagen in 1940, when Denmark was occupied by Nazi German forces.
Max von Laue and James Franck had left their own gold Nobel medals with Bohr rather than risk smuggling them out.
Anticipating that the institute would be searched for valuables, Hevesy dissolved the medals in aqua regia. The resulting liquid sat out the war safely on a high shelf in the lab; later Hevesy recovered the metal and the Nobel Institute re-cast it into medal form.

Hevesy was also co-discoverer of hafnium (named for Hafnia, Latin name for Copenhagen). The last of a few stable elements missing when atomic number theory was figured out, Hf makes up about 10% of my wedding ring.
All models are wrong; some models are useful. -- George Box

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