Nuclear reactions of silver with 300-GeV protons

Abstract

The interaction of silver with 300-GeV protons was studied and compared with that of 11.5-GeV protons. Cross section ratios, $\frac{{\ensuremath{\sigma}}_{300}}{{\ensuremath{\sigma}}_{11.5}}$, were determined for 74 nuclides ranging from $^{7}\mathrm{Be}$ to $^{106}\mathrm{Ag}^{m}$. The weighted average value of $\frac{{\ensuremath{\sigma}}_{300}}{{\ensuremath{\sigma}}_{11.5}}$ is 1.01\ifmmode\pm\else\textpm\fi{}0.10. A detailed examination of the dependence of the ratios on product $A$ and $\frac{N}{Z}$ reveals that the only difference occurs in the $A\ensuremath{\sim}20\ensuremath{-}30$ mass region, where a 17\ifmmode\pm\else\textpm\fi{}5% increase in cross sections is observed at 300 GeV.NUCLEAR REACTIONS Ag + 300-GeV protons; measured $\ensuremath{\sigma}$ for formation of 74 nuclides ranging from $^{7}\mathrm{Be}$ to $^{108}\mathrm{Ag}^{m}$; compared with corresponding $\ensuremath{\sigma}$ at 11.5 GeV.