Sympathetic cooling of $^4$He$^+$ ions in a radiofrequency trap

B. Roth; U. Fröhlich; S. Schiller

doi:10.1103/PhysRevLett.94.053001

Sympathetic cooling of $^4$He$^+$ ions in a radiofrequency trap

Atomic Physics 2016-08-16 v1 Plasma Physics

Authors: B. Roth , U. Fröhlich , S. Schiller

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Abstract

We have generated Coulomb crystals of ultracold $^4$ He $^+$ ions in a linear radiofrequency trap, by sympathetic cooling via laser--cooled $^9$ Be $^+$ . Stable crystals containing up to 150 localized He $^+$ ions at $\sim$ 20 mK were obtained. Ensembles or single ultracold He $^+$ ions open up interesting perspectives for performing precision tests of QED and measurements of nuclear radii. The present work also indicates the feasibility of cooling and crystallizing highly charged atomic ions using $^9$ Be $^+$ as coolant.

Keywords

sympathetic cooling Coulomb crystal radiofrequency trap helium ions laser cooling QED test

Cite

@article{arxiv.physics/0412053,
  title  = {Sympathetic cooling of $^4$He$^+$ ions in a radiofrequency trap},
  author = {B. Roth and U. Fröhlich and S. Schiller},
  journal= {arXiv preprint arXiv:physics/0412053},
  year   = {2016}
}

Comments

4 pages, 2 figures

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