Measurement of L3 subshell absorption edge parameters in the elements of lanthanide series (Z=57–70)

• Measurement of absorption edge parameters for lanthanide series (Z=57–70) has been carried out.
• Variation of Jump ratio and jump factor has been measured with respect to atomic number for the lanthanide series (Z=57–70).
• Experimentally obtained results are tabulated along with theoretical values of Chantler et al. (2005).
• A good agreement is found between experimental and theoretical values.
• The technique EDXRF used in such measurement is convenient, precise and reliable for the measurement of atomic parameters.

An experimental measurement has been carried out for measuring the absorption edge parameters i.e. jump ratio and jump factor for elements of lanthanide series “La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb” (Z=57–70) by using an EDXRF technique. Measured values of such parameters have been compared with theoretical values to check the experimental uncertainties and it was found that experimental results are in good agreement with theoretical values of Chantler et al. (2005, 〈http://physics.nist.gov/ffast〉, NIST, Gaithersburg).