arXiv:2509.02583v1 Announce Type: new
Abstract: 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 $1mathrm{D}$ Maxwellian velocity distribution with a temperature of $1500,mathrm{K}$, 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.
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