• DOI:10.1103/PhysRevA.101.032503
• Corpus ID: 212415072

Dielectronic resonances ofLMnandLNn(n≥4) series in highly chargedM-shelltungsten ions

@article{Dipti2020DielectronicRO,
  title={Dielectronic resonances ofLMnandLNn(n≥4) series in highly chargedM-shelltungsten ions},
  author={Dipti and Alexander Borovik and Roshan Silwal and J. M. Dreiling and A C Gall and Endre Takacs and Yuri Ralchenko},
  journal={Physical Review A},
  year={2020},
  volume={101},
  pages={032503}
}

• Dipti, A. Borovik, +4 authors Y. Ralchenko
• Published 4 March 2020
• Physics
• Physical Review A

We present spectroscopic measurements and detailed theoretical analysis of inner-shell $LMn$ and $LNn$ ($n\ensuremath{\ge}$ 4) dielectronic resonances in highly charged $M$-shell ions of tungsten. The x-ray emission from ${\mathrm{W}}^{49+}$ through ${\mathrm{W}}^{64+}$ was recorded at the electron-beam ion trap (EBIT) facility at the National Institute of Standards and Technology with a high-purity Ge detector for electron-beam energies between 6.8 and 10.8 keV. The measured spectra clearly show the presence of strong resonance features as well as direct excitation spectral lines. The analysis of the recorded spectra with large-scale collisional-radiative modeling of the EBIT plasma allowed us to unambiguously identify numerous dielectronic resonances associated with excitations of the inner-shell $2{s}_{1/2}, 2{p}_{1/2}$, and $2{p}_{3/2}$ electrons.