Temperature measurement of a single ion in a Penning trapS. Djekic, J. Alonso, H.-J. Kluge, W. Quint, S. Stahl, T. Valenzuela, J. Verdú, M. Vogel and G. WerthEur. Phys. J. D, 31 3 (2004) 451-457DOI: https://doi.org/10.1140/epjd/e2004-00168-1