I received an email today from the Isotope Discovery Project to say that the discovery of astatine-190 has been announced by a publication in Physical Review C. It was made at Jyväskylä in Finland at their accelerator lab via the bombardment of strontium-84 on a silver-109 target, along with the emission of three neutrons.
This is the lightest astatine isotope now known. It decays via alpha emission to bismuth-186, as the start of a decay process which the team followed as far as platinum-178. At-190 was measured to have a half-life of 1.0 ms. So - I would say "welcome, At-190", but you didn't stay around long enough to hear me say it.
 |
| Section of isotope chart where At-190 will be added. From the Colourful Nuclide Chart |
No comments:
Post a Comment