thorium

Physics

New state of thorium opens possibilities for nuclear clocks

Increase in nuclear excitation probability with a single laser pulse. The symbol η (η) represents the relative strength between the interaction energy and the transition energy. The dashed purple line near the top represents a 10% probability. Credit: Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.133.152503 Why do we have atomic clocks but not nuclear clocks? After all, the nucleus is usually…