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Comments
Beam quality: A beam resolution was 60keV (and up to 120 keV at larger angles). Target: The targets consisted of either SrF2 or metallic (in which case the targets were handled under vacuum) deposits on 12C backings of 10 mcg/cm2. The Sr-deposits had a thickness of 50-100 mcg/cm2. Data obtained: author's graph digitizedThe experiments were performed using the Q3D spectrometer at the heavy ion accelerator VICKSI at HMI Berlin. Experimental errors was not reported. Symbol size has been used instead under digitizing.