Characterization of a magnetic trap by polarization dependent Zeeman spectroscopy C. V. Nielsen, J. K. Lyngsø, A. Thorseth, M. Galouzis, K. T. Therkildsen, E. D. van Ooijen and J. W. Thomsen Eur. Phys. J. D, 48 1 (2008) 111-119 Published online: 18 April 2008 DOI: 10.1140/epjd/e2008-00068-4