L X-ray fluorescence cross-sections for elements 40 <= Z <= 92 at energies2-116 keV (a computer program 'LCSGEN')

L-l,L-alpha,L-beta and L-gamma X-ray fluorescence cross-sections for the el ements 40 less than or equal to Z less than or equal to 92 at energies 2-11 6 keV have been generated from an empirical relation fitted to two sets of available semi-empirical and theoretical cross-sectional values. The excita tion energy E for an element is constrained by the condition that only L an d higher shell vacancies are produced in the element. The closeness of gene rated and existing values of L X-ray fluorescence cross-sections recommends the use of generated values in the fields of Atomic & Molecular Physics an d trace elemental analysis. For this purpose a computer software 'LCSGEN' h as been developed. On personal computer 'LCSGEN' generates the cross-sectio nal values in b/atom just by entering the atomic number of element and exci tation photo energy in keV. (C) 2001 Elsevier Science Ltd. All rights reser ved.