Liste des Groupes | Revenir à e design |
On Tue, 07 May 2024 12:17:24 -0400, Joe Gwinn <joegwinn@comcast.net> wrote:Probably not. The technique to used to generate very precise laser wavelengths does seem to be difficult and demanding to work with.On Tue, 7 May 2024 16:26:27 +0200, Jeroen Belleman <jeroen@nospam.please> wrote:On 5/7/24 15:35, Martin Brown wrote:>On 07/05/2024 06:06, Jan Panteltje wrote:>Atomic nucleus excited with laser: a breakthrough after decades>
<https://www.sciencedaily.com/releases/2024/04/240429103045.htm>
The 'thorium transition', which has been sought after for decades,
has now been excited for the first time with lasers.
This paves the way for revolutionary high precision technologies,
including nuclear clocks
I wonder what the Q value for stimulated nuclear emission is?
>
They state a centre frequency of roughly 2 PHz and a decay time
of 630s, which would put the Q in the 1e19 ballpark. Prodigious.
No wonder it was hard to find.
The Time guys have been looking for this forever, so to speak.
>
It's the only atomic kernel transition with any degree of coupling to
electromagnetic radiation. This will be orders of magnitude better
than such as lattice clocks.
>
There will be a flood of papers.
They aren't tuning to a resonance, but to the difference between twoNuclear energy levels aren't "resonances" but quantum states, and the transition between them isn't a "resonance" either, though one can talk about the kind of resonance that would behave in a similar way.
close resonances.
Les messages affichés proviennent d'usenet.