Timeline for If there are long-lived elements in the Island of stability, why are they not present in Nature?
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10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 20, 2016 at 21:10 | answer | added | ProfRob | timeline score: 2 | |
| Jul 20, 2016 at 18:33 | answer | added | Joshua | timeline score: 4 | |
| Feb 3, 2016 at 0:09 | history | tweeted | twitter.com/StackPhysics/status/694673942569734145 | ||
| Jan 31, 2016 at 2:09 | comment | added | Lewis Miller | Some of these probably do exist in nature, but in unusual places like the crusts of neutron stars. See physics.stackexchange.com/questions/231981/… | |
| Jan 30, 2016 at 6:02 | comment | added | CuriousOne | @igael: For heavy elements? I doubt it. I don't think optical detection would work, to begin with. It's not sensitive enough if there is background. I would do mass spectroscopy and use a simple, high throughput mass filter to get rid of everything below let's say uranium, then maybe another filter for the heavier nuclei and then a trap for the target nuclei. If we capture something unexpected, we want to keep it for further analysis. And while all of this sounds cheap, I don't think it would be. We are talking about something like a small isotope separation facility. | |
| Jan 30, 2016 at 4:31 | comment | added | user46925 | @CuriousOne : is all the spectrum of a new element predictable from the equations ? | |
| Jan 30, 2016 at 2:25 | comment | added | Gert | If they really are that stable, that won't help their detection either. An Israeli scientist claimed a few years back to have detected one in uranium. Turned out to be a dud, though. | |
| Jan 30, 2016 at 1:49 | comment | added | CuriousOne | We couldn't rule it out completely, but we can set limits in their abundance in Earth's crust or matter from the solar system by accelerator mass spectroscopy techniques. I can't tell you where the current limits of such ultra-trace analysis techniques are. There is, as far as I can tell, no irreducible background that can't be overcome, so it's probably just a matter of money for the right experiment. | |
| Jan 30, 2016 at 1:13 | review | First posts | |||
| Jan 30, 2016 at 2:51 | |||||
| Jan 30, 2016 at 1:09 | history | asked | nordmarj | CC BY-SA 3.0 |