The Biological Effect of Very High Energy Hadrons

J. Baarli CERN, Geneva, Switzerland

M. Bianchi State Institute of Radiation Hygiene, 1345, Osteras, Oslo, Norway

I. Diehl-Marshall Kernforschungszentrum Karlsruhe, Institut für Kernphysik, 7500 Karlsruhe, Postfach, 3640, Federal Republic of Germany

R.C. Raffnsøe School of Medicine, University of Athens, Goudi, Athens, 609, Greece

M. Riedel CERN, Geneva, Switzerland

D. Sotirious State Institute of Radiation Hygiene, 1345, Osteras, Oslo, Norway

A.H. Sullivan Kernforschungszentrum Karlsruhe, Institut für Kernphysik, 7500 Karlsruhe, Postfach, 3640, Federal Republic of Germany

J.W.N. Tuyn School of Medicine, University of Athens, Goudi, Athens, 609, Greece

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Summary

The meristems of Vicia faba bean roots were irradiated at different depths in water in a 250 GeV/c positive hadron beam from the CERN Super Proton Synchrotron (SPS). The growth during the 10 days following irradiation was determined and compared with results obtained from ⁶⁰Co gamma-ray exposures. The data indicate a Relative Biological Efficiency (r.b.e.) near to one, independent of the contribution of secondaries to the dose. However, some anomalies in the radiation response of the irradiated beans were noted.

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The Biological Effect of Very High Energy Hadrons

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The Biological Effect of Very High Energy Hadrons

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