KALPHA1 AND KALPHA2 X-RAY ENERGIES OF NEPTUNIUM, PLUTONIUM, AND AMERICIUM

The Kα1 and Kα2 x-ray energies of Np, Pu, and Am have been measured with a Cauchois-type bent-crystal transmission spectrometer. The energies of these transitions have been determined to an accuracy of 5 eV. The Kα1-Kα2 differences agree within the experimental error with differences obtained from the previously reported L x-ray energies. © 1969 The American Physical Society.