Measurement of L X-Ray Intensity Ratios for ⁹²U and ⁹⁰Th Elements Using Photoionization in an External Magnetic Field

L x-ray intensity ratios Ll/Lγ, Lα/Lγ and Lβ/Lγ for ⁹²U and ⁹⁰Th are measured by using 59.5keV incident photon energy at 110° and 125° scattering angles. The samples are located in the external magnetic field of intensities ± 0.15 T, ±0.30 T, ± 0.45 T, ± 0.60 T and ± 0.75 T. The experimental results obtained for B=0 are compared with the theoretical values calculated using Scofield's tables based on the Hartree--Slater theory. The contribution to the alignment of the external magnetic field is discussed. It is observed that the L x-ray intensity ratios decrease with the increasing magnetic field intensity.