Electron cooling of protons in a nested penning trap

D. S. Hall, G. Gabrielse

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


Trapped protons cool via collisions with trapped electrons at 4 K. This first demonstration of sympathetic cooling by trapped species of opposite sign of charge utilizes a nested Penning trap. The demonstrated interaction of electrons and protons at very low relative velocities, where recombination is predicted to be most rapid, indicates that this may be a route towards the study of low temperature recombination. The production of cold antihydrogen is of particular interest, and electron cooling of highly stripped ions may also be possible.

Original languageEnglish (US)
Pages (from-to)1962-1965
Number of pages4
JournalPhysical review letters
Issue number10
StatePublished - 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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