Progress on a measurement of the spectral distribution of the two-photon decay of the 21S0 level in helium-like gold is reported. A measurement of the exact shape of the continuous spectrum of the two-photon decay in heavy helium-like ions provides a sensitive test on the details of the complete structure of a helium-like system. In our experiment at GSI, a beam of 106.6 MeV/u Au77+ ions is excited by a thin Aluminum foil and the subsequent decays are observed in an array of Ge(i) detectors.
KeywordsArgonne National Laboratory True Coincidence Thin Aluminum Foil Photon Coincidence Photon Energy Distribution
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- H.W. Schäffer, R.W. Dunford, E.P. Kanter, S. Cheng, L.J. Curtis, A.E. Livingston and P.H. Mokler, Phys. Rev. A (1998) submitted.Google Scholar