TcKX-Ray Spectrum

Fluorescent x-ray radiation from 100 mg of K${\mathrm{Tc}}^{99}$ ${\mathrm{O}}_4$ was analyzed with a Cauchois-type curved-crystal spectrometer and four $K$-series x-ray lines of Tc were recorded. The wavelengths accurate to within 0.1 xu are: $K{\alpha }_2$, 677.90; $K{\alpha }_1$, 673.57; $K{\beta }_{1,3}$, 600.20; $K{\beta }_{2,4}$, 588.99; all wavelengths in xu.