Sanjiv Puri

X-ray production cross sections at incident photon energies across the Mi (i=1-5) edges of 90Th

The X-ray production cross sections for the Mk (k= ξ, δ, α, β, ζ, γ, m1, m2) groups of X-rays have been evaluated at incident photon energies across the Mi (i =1-5) edges of 90Th using the relativistic Hartree-Fock-Slater model based photoionisation cross sections and recently reported values of the M-shell X-ray emission rates, fluorescence and Coster Kronig yields. Further, the energies of the prominent (Mi-Sj) (Sj=Nj, Oj and i =1-3, j =1-7) resonant Raman scattered (RRS) peaks at different incident photon energies have also been evaluated using the neutral-atom electron binding energies (Esj) based on the relaxed orbital relativistic Hartree-Fock-Slater model.

Effect of wave function on the proton induced L XRP cross sections for 62Sm and 74W

The Lk(k= 1, α, β, γ) X-ray production cross sections have been calculated for 74W and 62Sm at different incident proton energies ranging 1-5 MeV using theoretical data sets of different physical parameters, namely, the Li(i=1-3) sub-shell X-ray emission rates based on the Dirac-Fork (DF) model, the fluorescence and Coster Kronig yields based on the Dirac- Hartree-Slater (DHS) model and two sets the proton ionization cross sections based on the DHS model and the ECPSSR in order to assess the influence of the wave function on the XRP cross sections. The calculated cross sections have been compared with the measured cross sections reported in the recent compilation to check the reliability of the calculated values.

Chemical effects on the Li(i = l-3) sub-shell x-ray relative intensities for some compounds of Hg at 22.6 keV

The intensity ratios, ILk/ILα (exp) (k = 1, η, β4 6, β1,2,3,15, β5 7 9 10, γ1,5, γ2,3, γ4, β, γ) have been measured for some compounds of Hg80 namely, HgI2, HgBr2, Hg(C2H3O2)2 and a pure Hg80 target (liquid form) at 22.6 keV incident photon energy in order to investigate the influence of chemical effects on these ratios. The measured ratios, ILβ5,7/ILα(Exp.) and ILγ2,3,6/ILα(Exp.), were found to be influenced by chemical effects.