Thorium-229: The Atomic Quantum Battery ⚡ экспресс
In a thorium-229 ion, the electron shell and nucleus can exchange energy, like two coupled pendulums. Energy given to the shell rhythmically flows into the nucleus, turning the system into something like a battery. This opens the way to nuclear batteries that can hold a charge for a long time. Imagine a battery that doesn’t run out for years!
Two pendulums on a shared string trade motion: push one, and the second starts swinging, and a moment later the first gets a push back. In a thorium-229 atom, energy flows nearly loss-free between the electron shell and the nucleus.
This rhythm can be seen in an atom trap: analyzing the light (spectroscopy) and measuring brightness (photometry) reveal the shell's oscillations. A laser charges it, and the energy dives into the nucleus—creating a wireless nuclear battery recharged by light. It all rests on the laws of the Standard Model, which describes matter. Niels Bohr deciphered the layered structure of the atom, and Ernest Rutherford discovered its massive nucleus.
Nuclei usually demand harsh gamma radiation. But thorium-229 is unique: its nucleus is excited by soft ultraviolet light with an energy of just 8.4 electronvolts—that’s electron-level energy, not nuclear. The energy is a million times smaller than typical nuclear energy, so this battery can be built right now.
🎯 The thorium-229 nucleus can be 'charged' not with gamma rays but with ordinary ultraviolet light—its excitation energy is only 8.4 electronvolts, like an electron jump in an atom, not a nuclear reaction.