J. Sugar et al., OBSERVATION OF PD-LIKE RESONANCE LINES THROUGH PT32-LIKE RESONANCE LINES OF ER38+ AND HF42+( AND ZN), Journal of the Optical Society of America. B, Optical physics, 10(5), 1993, pp. 799-801
Spectra of highly ionized Er, Yb, Hf, W, and Pt were observed by injec
ting these elements into the plasma of the TEXT tokamak. Resonance lin
es of the 4d10-4d(9)f transition array in the Pd I isoelectronic seque
nce were identified by comparison with plots of observed-minus-calcula
ted transition energies. These plots were based on data previously kno
wn through Ho21+. They were fitted to low-order polynomials that permi
tted accurate predictions of wavelengths to Bi37+. In addition, resona
nce lines of Zn-like Er38+ and Hf42+ were observed.