One promising candidate for a nuclear “clock” transition is the one between the ground state of the thorium-229 nucleus and its lowest nuclear excited state, thorium-229m. This state is sometimes ...

Doubly-excited electrons reach new energy states. ScienceDaily. Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2018 / 11 / 181113110327.htm. Springer.

Sep. 13, 2024 — The low-energy excited state of thorium-229 (229Th) isotope nucleus has recently gained much attention owing to it being an ideal candidate for ultra-precise nuclear clocks.

When absorbing energy, an electron in a molecule jumps up to higher energy levels, called excited states. But roaming had only been observed in the first such excited states, not in any subsequent ...