Measurement of nuclear density distributions by the scattering of unstable Ni nuclear beam at intermediate energy with solid hydrogen

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We have been developing a new method to deduce nuclear densities by using the intermediate proton scattering at RCNP, Osaka University and HIMAC in Chiba, Japan. By applying our method to medium weight nuclei like Ni-66, 70, we have successfully performed measurements of elastic proton scattering at GSI, Germany, using the unstable nuclear beam of 300 MeV/ A from the heavy ion synchrotron. For the experiment we used the detector system and solid hydrogen generator, total weight of 1 ton, from RIKEN and DAQ system of GSI. After the measurement the equipments have been returned to RIKEN and the data reduction and the analysis are in progress. Last March this year preliminary results are reported at the meeting of Japanese Physical Society in Kobe.