Die (γ,p)-Reaktion an einigen leichten und mittelschweren Kernen

Photoproton spectra have been obtained from gaseous¹⁸O,²⁰Ne,²²Ne,³⁶Ar,⁴⁰Ar,⁸⁴Kr, Kr and Xe and from foils of²³Na and K irradiated with bremsstrahlung from 24 to 32.5 MeV endpoint energy. The charged particles have been detected at 90° to theγ-beam by a Cs I(Tl)-spectrometer with pulse shape discrimination. Yields and lower limits for the integrated cross sections are given. For argon and the heavier nuclei, the results are compared with statistical-model calculations.