Germany Achieves First Capture of Argon Nuclei at 30% Speed of Light with Electron Cooling
On August 3, researchers at the GSI Helmholtz Centre for Heavy Ion Research in Germany successfully decelerated and captured fully ionized argon ions (^36Ar^18+) for the first time using the HITRAP highly charged ion trap facility. These ions, having lost all their electron shells, can be regarded as bare nuclei, with an initial velocity of approximately 30% of the speed of light. The research findings have been published in the journal Physical Review X. The interior of the radiofrequency resonator that slows down the ions is where highly charged ions are typically produced via particle accelerators and formed under strong electric fields and high-energy conditions. Since these ions are generated at extremely high velocities, they must first be stopped, captured, and cooled before precision physics measurements can be conducted. The research team stated that this experiment achieved, for the first time, the entire process from producing highly charged ions to storing them in a special trap for at least 11 seconds.
2026-08-04
