Electromagnetic Spectrum ofAm241

Abstract

The electromagnetic spectrum of ${\mathrm{Am}}^{241}$ has been studied with a ten-inch bent-crystal spectrometer and a sodium iodide scintillation counter. Twelve gamma rays, sixteen Np $L$ x-rays, and eight Am $L$ x-rays have been measured. The gamma rays in Np have energies of 26.363, 33.199, 43.463, 59.568, 103, 113, 130, 159, 210, 270, 328, and 370 kev. The x-ray energies establish the validity of the Mosley extrapolations in this region of the periodic table. Details of the spectrometer operation and calibration are given.