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arXiv · 1512.00709

Cascade emission in electron beam ion trap plasma of W$^{25+}$ ion

V. Jonauskas·T. Pütterich·S. Kučas·Š. Masys·A. Kynienė·G. Gaigalas·R. Kisielius·L. Radžiūtė·P. Rynkun·G. Merkelis
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Abstract

Spectra of the W$^{25+}$ ion are studied using the collisional-radiative model (CRM) with an ensuing cascade emission. It is determined that the cascade emission boosts intensities only of a few lines in the $10 - 3$ nm range. The cascade emission is responsible for the disappearance of structure of lines at about 6 nm in the electron beam ion trap plasma. Emission band at 4.5 to 5.3 nm is also affected by the cascade emission. The strongest lines in the CRM spectrum correspond to $4d^{9} 4f^{4} \rightarrow 4f^{3}$ transitions, while $4f^{2} 5d \rightarrow 4f^{3}$ transitions arise after the cascade emission is taken into account.

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V. Jonauskas, T. Pütterich, S. Kučas, Š. Masys, A. Kynienė, G. Gaigalas, R. Kisielius, L. Radžiūtė, P. Rynkun, G. Merkelis. 2015-12-02. Cascade emission in electron beam ion trap plasma of W$^{25+}$ ion. https://doi.org/10.1016/j.jqsrt.2015.03.013

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