@article{oai:nifs-repository.repo.nii.ac.jp:00010532,
 author = {SUZUKI, Chihiro and Higashiguchi, Takeshi and Sasanuma, Atsushi and Arai, G. and Fujii, Y. and Kondo, Y. and MURAKAMI,  Izumi and O'Sullivan, G.},
 journal = {Nuclear Instruments and Methods in Physics Research B: Beam Instractions with Materials and Atoms},
 month = {Oct},
 note = {We have observed soft X-ray spectra from highly charged ions of seven different lanthanide elements with atomic numbers ranging from 60 to 70 in laser-produced plasmas (LPPs) using CO2 and Nd:YAG laser systems, the wavelengths of which are 10.6 μm and 1.064 μm, respectively. The spectral feature drastically changes between the two types of LPPs due primarily to the difference in opacity. Narrow band quasicontinuum features arising from n= 4–4 transitions, the centre wavelength of which systematically moves to shorter wavelength as the atomic number (Z) increases, are observed in theCO2LPPs, accompanied by sharp peaks coinciding with the strongest resonance lines of Pd-like ions for lower Z elements. In contrast, the quasicontinuum bands are broader and smoother in the Nd:YAG LPPs, appearing with bands of n= 4–5 transitions on the shorter wavelength side. The results are also discussed based on comparisons with atomic structure calculations for ions with outermost 4d and 4f subshells.},
 pages = {253--256},
 title = {Opacity effects on soft X-ray spectra from highly charged lanthanide ions in laser-produced plasmas},
 volume = {408},
 year = {2017}
}