The excitation functions for the α particles and protons from the reactions ${}_{}{}^{55}{}_{}{}^{}\mathrm{Mn}$(p,p${)}^{55}$Mn and ${}_{}{}^{55}{}_{}{}^{}\mathrm{Mn}$(p,α${)}^{52}$Cr were measured from $E_{\mathrm{p}=5.8\mathrm{}}$ to 7.0 MeV at ${\theta }_{\mathrm{lab}}$=90°, 125°, and 160°. The cross sections were analyzed by the channel cross correlation function, the autocorrelation function, and the statistical compound nuclear theory of Feshbach to determine the number of correlating channels $n_d$, the average total level width 〈${\Gamma }_{\mu }$〉, and the ratio 〈${\Gamma }_{\mu }$〉/D. With these values, the theoretical intermediate width 〈${\Gamma }_d$↑〉 was calculated to be 27±11.7 keV, which was consistent with the experimental result 36±8 keV within the errors. The ratio $n_d$($n_d$-1)/$n^2$ was determined to be 0.63±0.16, which was also in agreement with the theoretical prediction (2D/π〈${\Gamma }_{\mu }$${〉}^{1/2}$=0.40±0.0 9, within the error.

• Received 13 August 1984

DOI:https://doi.org/10.1103/PhysRevC.31.49