Identification of 3d–4p transitions in Co-like W xlvii and Tm xliii and in Cu-like W xlvi and Tm xli from laser-produced plasmas

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We observed and identified 3d–4p transitions in Co-like (3d9–3d84p) and Cu-like (3d104s–3d94s4p, 3d104p–3d94p2, 3d104d–3d94p4d, 3d104f–3d94p4f) x-ray spectra of W xlviii and W xlvi (~6–7.5A) and of Tm xliii and Tm xli (8–9 A). The spectra were obtained by irradiating planar targets with high-intensity laser light. Identification was based on isoelectronic sequence analysis and on comparison with ab initio relativistic calculations. The importance of configuration interactions in Cu-like spectra is pointed out. Agreement between computations and measurements was good.