Abstract
Detailed theoretical calculations are performed for the 4f and 5p inner-shell excitations of W-W3+ ions using the multiconfiguration Hartree—Fock method in order to better understand the origin of the XUV photoabsorption spectra of W atoms from the dual laser-produced plasma experiment (Costello et al. J. Phys. B 24 (1991) 5063) and the spectra of photon-induced single ionization of Wq+ ions (q = 1, 2, 3) (Müller et al. Phys. Scr. T144 (2011) 014052) from photon-ions merged beam experiments, respectively. Two broad and strong resonances in the experimental spectra have also been theoretically identified mainly from 5p–5d resonance. The 4f–5d, 6d and 5p–6d transitions also make a small contribution to each spectrum, which are superimposed on the 5p–5d transition arrays. Based on the assumption of a normalized Boltzmann distribution among the excited states, we succeed in reproducing spectra which are in good agreement with experiments.
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