Spectra of W$^{39+}$-W$^{47+}$ in the 12 nm to 20 nm region observed with an EBIT light source

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dc.creatorRalchenko, Yu.
dc.creatorReader, J.
dc.creatorPomeroy, J. M.
dc.creatorTan, J. N.
dc.creatorGillaspy, J. D.
dc.date2008-01-18
dc.date.accessioned2026-07-07T08:55:16Z
dc.date.available2026-07-07T08:55:16Z
dc.descriptionWe observed spectra of highly ionized tungsten in the extreme ultraviolet with an electron beam ion trap (EBIT) and a grazing incidence spectrometer at the National Institute of Standards and Technology. Stages of ionization were distinguished by varying the energy of the electron beam between 2.1 keV and 4.3 keV and correlating the energies with spectral line emergence. The spectra were calibrated by reference lines of highly ionized iron produced in the EBIT. Identification of the observed lines was aided by collisional-radiative modeling of the EBIT plasma. Good quantitative agreement was obtained between the modeling results and the experimental observations. Our line identifications complement recent results for W$^{40+}$-W$^{45+}$ observed in a tokamak plasma by Pütterich {\it et al} (\jpb {\bf 38}, 3071, 2005). For most lines we agree with their assignment of ionization stage. Additionally, we present new identifications for some allowed and forbidden lines of W$^{39+}$, W$^{44+}$, W$^{46+}$, and W$^{47+}$. The uncertainties of our wavelengths range from 0.002 nm to 0.010 nm.
dc.description19 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0801.2817
dc.identifierhttp://arxiv.org/abs/0801.2817
dc.identifierJ Phys B 40, 3861 (2007)
dc.identifierdoi:10.1088/0953-4075/40/19/007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/146219
dc.subjectAtomic Physics
dc.subjectPlasma Physics
dc.titleSpectra of W$^{39+}$-W$^{47+}$ in the 12 nm to 20 nm region observed with an EBIT light source
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