| title |
Mercury-197m |
| header |
| teaser |
/assets/images/spectra-th/Hg-197m.png |
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| last_modified_at |
2022-08-24 15:10:00 +0200 |
There are seven stable isotopes of mercury, with 202Hg being the most abundant (29.86%). The longest-lived radioisotopes are 194Hg with a half-life of 444 years, and 203Hg with a half-life of 46.612 days. Most of the remaining radioisotopes have half-lives that are less than a day.
For the synthesis of precious metals two stable mercury isotopes are of potential interest - the trace isotope 196Hg and the more abundant 198Hg. Both are "one neutron removed" from 197Hg, a radioisotope which decays to 197Au, the only known stable isotope of gold.
<iframe width="100%" height="500" src="/assets/spectra/Hg-197m.html" title="Hg-197m gamma spectrum" frameborder="0" allowfullscreen></iframe>
30 minute measurement with a High Purity Germanium (HPGe) radiation detector.
| Isotope: |
Mercury |
| Mass number: |
197 |
| Atomic number: |
80 |
| Neutron number: |
117 |
| ... |
... |