Virtual photon spectra, corrected for finite nuclear size and charge are used to evaluate integrated cross sections for the scattering of 60 MeV muons from ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$, ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}$, and ${}_{}{}^{197}{}_{}{}^{}\mathrm{Au}$ nuclei. The ratios of the cross sections $\sigma ({\mu }^{-}, {\mu }^{-} n)$ to $\sigma ({\mu }^{+}, {\mu }^{+}, n)$ agree with the ${\mathrm{experiment}}^1$; the integrated cross sections individually are consistently a little less than experimental values.

NUCLEAR REACTIONS Muon scattering, virtual photon method, $\sigma ({\mu }^{+}, {\mu }^{+} n)$ for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$, ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}$, ${}_{}{}^{197}{}_{}{}^{}\mathrm{Au}$, and $\sigma ({\mu }^{-}, {\mu }^{-} n)$ for ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{63}{}_{}{}^{}\mathrm{Cu}$, ${}_{}{}^{197}{}_{}{}^{}\mathrm{Au}$ at $E_{\mu }=60\mathrm{}$ MeV evaluated using second order Born approximation.

• Received 23 February 1982

DOI:https://doi.org/10.1103/PhysRevC.26.281