Measurement of the yield of nuclides produced in the interaction of 1-GeV protons with a cylindrical lead target

In the last few years, the yield of nuclides produced in spallation and fission reactions by high-energy protons bombarding heavy-element targets with dimensions close to the path length has been determined. The development of computational techniques describing the nuclear cascade in such targets calls for a comparison with experimental results obtained in a relatively simple geometry. The goal of the present work was to obtain experimental data for selecting and correcting the parameters to be used in the calculations. The distributions were used to determine the yield of 22 nuclides for a cylindrical lead target with a diameter of 200 mm and a length of 600 mm; the distributions were expressed by the activity in saturation, induced by a primary proton beam with a current of 1 nA. The results of this determination are listed