Experimental wavelengths for intrashell transitions in tungsten ions with partially filled 3p and 3d subshells
Experimental wavelengths for intrashell transitions in tungsten ions with partially filled 3p and 3d subshells
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DOI：
10.1103/physreva.87.062505
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发表时间：
2013-06
影响因子：
2.9
通讯作者：
T. Lennartsson;J. Clementson;P. Beiersdorfer
中科院分区：
文献类型：
--
作者：
T. Lennartsson;J. Clementson;P. Beiersdorfer
Spectra and measured wavelengths of intrashell n = 3 transitions in highly charged tungsten ions with partially filled 3p and 3d valence shells, Al-like W61+ through Fe-like W48+, are presented. The ions were created and excited at the electron-beam ion-trap facility at the Lawrence Livermore National Laboratory and measured with a high-resolution grazing-incidence spectrometer. The spectral lines were studied in the 27-41 angstrom range and were analyzed by a comparison with synthetic spectra based on a collisional-radiative model. We determined that the emission includes not only electric-dipole-allowed transitions, but also several electric-quadrupole and magnetic-dipole transitions. Line-position uncertainties as low as 25 ppm were achieved. Thus, our measurements provide much-needed benchmarks for calculations of the atomic structure of highly charged ions with a partially filled subshell, since these ions are difficult to calculate due to electron-correlation effects. (Less)
