The effect of an external magnetic field on the L3 subshell fluorescence yields and level widths for Gd, Dy, Hg and Pb at 59.5 keV

Abstract

The effect of external magnetic field on the L3 subshells fluorescence yields (ω3) and level widths (ΓL3) for ferromagnetic Gd and Dy and diamagnetic Hg and Pb have been investigated using the 59.5keV incident photon energy in the external magnetic field of intensities ±0.75T. L3 X-ray production cross sections (σL3X) have been measured for the same elements. The measured ω3, ΓL3 and σL3X values for B=0 are in good agreement with the theoretical values. It was observed that the values of ω3 and σL3X with the applied magnitude of the magnetic field in both directions increase for ferromagnetic Gd and Dy but decrease for diamagnetic Hg and Pb. Furthermore, in the presence of an external magnetic field, the values for ΓL3decrease for Gd and Dy, and increase for Hg and Pb. The results show that the atomic parameters such as spectral linewidth, radiation rates, photoionization cross section and fluorescence yield can change when the irradiation is conducted in a magnetic field.