Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum
2006
We present evidence showing how antiprotonic hydrogen, the quasistable antiproton ( � p)-proton bound system, has been synthesized following the interaction of antiprotons with the molecular ion Hin a nested Penning trap environment. From a careful analysis of the spatial distributions of antiproton annihilation events, evidence is presented for antiprotonic hydrogen production with sub-eV kinetic energies in states around n � 70, and with low angular momenta. The slow antiprotonic hydrogen may be studied using laser spectroscopic techniques.
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