2025/08/28 by E. D. Hunter, Hunter, E. D., M. Bumbar +61 · 2 citations
Physics and Astronomy · #Atomic and Molecular Physics #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Nuclear physics research studies #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2509.02583
openalex publication_date 2025/08/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We report a factor of 100 increase in the antihydrogen beam intensity downstream of ASACUSA's Cusp trap: 320 atoms detected per 15-minute run. The beam contains many Rydberg atoms, which we selectively ionize to determine their velocity and binding energy. The time of flight signal is modeled using a 1D Maxwellian velocity distribution with a temperature of 1500 K, which is close to the measured antiproton plasma temperature. A numerical simulation reproduces the observed distribution of binding energies and suggests that about 16% of the atoms may be in the ground state.