Single-nucleus quantum beats excited by synchrotron radiation A. Q. R. Baron, A. I. Chumakov, R. Rüffer, H. Grünsteudel, H. F. Grünsteudel and O. Leupold Europhys. Lett., 34 5 (1996) 331-336 Published online: 01 September 2002 DOI: 10.1209/epl/i1996-00460-0