Production of Kr and Xe isotopes by interaction of197Au with 0.15–24 GeV protons

Abstract

Cross sections and thick-target recoil properties of several Kr and Xe isotopes formed in the interaction of 197Au with 0.15-24 GeV protons have been determined in order to study their variations with mass product and incident energy. Noble gas isotopic composition and concentration have been obtained by using high sensitivity mass-spectrometry. The measurement of the experimental range, 2W(F+B), and of the forward-tobackward ratio, F/B, permits (with the help of a mathematical formalism based on the two-step model) the determination of some characteristics of nuclear reactions. The results are discussed in terms of fission and spallation mechanisms.