Effect of applied external magnetic field on the L X-ray emission line structures of the lanthanide elements

highlights
• Changes in external magnetic field affects some parameters.
• Lanthanides electronic structure can change with this effect.
• There is correlation between the intensity ratio changes with atomic number.

In this work, X-ray emission lines of the Lα, Lβ, Lγ and Ll groups in elements La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Er were studied to examine the influence of 0.6 T and 1.2 T external magnetic field. The measurements were done using an energy dispersive Si(Li) detector with photon excitation by radioisotopes. A significant dependence of the L X-ray emission lines was observed for Sm but no discernible effect on the Pr Lα/Lγ intensity ratio was observed. Likewise no significant effect of external magnetic field on the various Lα/Ll intensity ratios was observed. For B=0, the results are compared with the theoretical data and experimental results in literature. The results demonstrate that the relative intensities are more susceptible to the external magnetic field than the energy shifts.