X-Ray Spectrum of Element 43

The x-ray spectrum of a sample containing Element 43 supplied by the Clinton Laboratories has been studied. Lines ascribable to $K{\alpha }_1$, $K{\alpha }_2$, $K{\beta }_1$, $K{\beta }_2$ of Element 43 were identified. Their wave-lengths followed closely the values calculated by interpolation betwen elements 41, 42, 44, and 45.