J. Mir, a., G. Murillo, B. Méndez, J. López-Monro, J. Aspiazu, P. Villaseñor, and ., Measurement of L X-ray production cross sections by impact of protons with energies between 2.5 MeV and 5.0 MeV in selected lanthanoids, Rev. Mex. Fís. 58, (2012).