On the Resonance Levels of Rhodium and Indium

Self-absorption curves as well as mutual absorption curves of the In and the Rh neutron capture levels have been measured. From the experiments, the following values were obtained for the absorption coefficients for self-indication $K_s$, the resonance cross sections ${\sigma }_0$, the natural widths $\Gamma$, the neutron width ${\Gamma }_N$ and the spacing $|E_{0\mathrm{In}}-E_{0\mathrm{Rh}}|$ of the two levels: $K_s=11.5\mathrm{}$ ${\mathrm{cm}}^2$/g, ${\sigma }_0=4100\mathrm{}\times {10}^{-24\mathrm{}}$ ${\mathrm{cm}}^2$, $\Gamma =0.13\mathrm{}$ ev, ${\Gamma }_N=3.5\mathrm{}\times {10}^{-4\mathrm{}}$ ev for Rh; $K_s=52\mathrm{}$ ${\mathrm{cm}}^2$/g, ${\sigma }_0=23,000\mathrm{}\times {10}^{-24\mathrm{}}$ ${\mathrm{cm}}^2$, $\Gamma =0.07\mathrm{}$ ev, ${\Gamma }_N=1\mathrm{}\times {10}^{-3\mathrm{}}$ ev for In; $|E_{0\mathrm{In}}-E_{0\mathrm{Rh}}|=0.15\mathrm{}$ ev.