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 59.5 keV incident photon energy at 110° and 125° scattering angles. The samples are located in the external magnetic field of intensities ±0.15T, ±0.30T, ±0.45T, ±0.60T and ±0.75T. 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.