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(Anti)hydrogen recombination studies in a nested Penning trap

  • Section 4: Routes To Antihydrogen
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Abstract

Extremely cold antiprotons, stored in a Penning trap at 4 K, open the way toward the production and study of cold antihydrogen. We have begun experimentally investigating the possibility to recombine cold positrons and antiprotons within nested Penning traps. Trap potentials are adjusted to allow cold trapped protons (and positive helium ions) to pass through cold trapped electrons. Electrons, protons and ions are counted by ejecting them to a cold channel plate and by nondestructive radiofrequency techniques. The effect of the space charge of one trapped species upon another trapped species passing through is clearly observed.

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Quint, W., Kaiser, R., Hall, D. et al. (Anti)hydrogen recombination studies in a nested Penning trap. Hyperfine Interact 76, 181–188 (1993). https://doi.org/10.1007/BF02316717

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