Lx-ray transition probabilities in elements of medium atomic numbers

The $\frac{L{\gamma }_1}{L{\beta }_1}$, $\frac{L\eta }{L{\beta }_1}$, $\frac{L_1}{L\alpha }$, and $\frac{L{\beta }_{2,15}}{L\alpha }$ radiative transition probabilities have been measured for 16 elements ranging in atomic numbers from ${}_{42}{}^{}{}_{}{}^{}\mathrm{Mo}$ to ${}_{62}{}^{}{}_{}{}^{}\mathrm{Sm}$. This was performed using an evacuated single-crystal spectrometer in conjunction with a flow proportional counter. The samples studied were pure metals in an amorphous state except for ${}_{56}{}^{}{}_{}{}^{}\mathrm{Ba}$, ${}_{59}{}^{}{}_{}{}^{}\mathrm{Pr}$, and ${}_{60}{}^{}{}_{}{}^{}\mathrm{Nd}$, where the oxides of these elements were used. CsCl and NaI samples were used to study the spectrum of ${}_{55}{}^{}{}_{}{}^{}\mathrm{Cs}$ and ${}_{53}{}^{}{}_{}{}^{}\mathrm{I}$, respectively. Ionization of the samples was produced by radiation from commercial ${}_{74}{}^{}{}_{}{}^{}\mathrm{W}$ and ${}_{24}{}^{}{}_{}{}^{}\mathrm{Cr}$ x-ray tubes. The corrected measured ratios are compared with the results of the theoretical calculations based on relativistic Hartree-Fock-Slater potential.