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On the Stark broadening in the Au I and Au II spectra from a helium plasma by S. Djeniže is a Chemistry article available to read on EtoBox.

What is On the Stark broadening in the Au I and Au II spectra from a helium plasma about?

The Stark FWHM (Full-Width at Half of the Maximal line intensity, W) of 5 neutral and 26 singly ionized gold (Au I and Au II, respectively) spectral lines have been measured in laboratory helium plasma at approximately 16,600 K electron temperature and 7.4 × 10 22 m -3 electron density. Five Au I and ten Au II W values are reported for the first time. The Au II W values are compared with recent theoretical data, calculated based on a modified semi-empirical approach, and also with existing experimental W values. Our normalized Stark widths are six times higher than those measured in a laser-produced plasma. Possible explanation of this is recommended here. An agreement (within the accuracy of the experiment and uncertainties of the theoretical approach used) with the recently calculated W data was found in the 6p-7s Au II transition. The calculated hyperfine splitting for the five Au II lines in the 6s-6p transition is also presented. At the stated helium plasma conditions, Stark broadening has been found to be the dominant mechanism in the Au I and Au II line shape formation. A modified version of the linear low-pressure pulsed arc was used as a plasma source operated in helium, w

Who reads On the Stark broadening in the Au I and Au II spectra from a helium plasma?

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Author
S. Djeniže
Publisher
Elsevier Science; Elsevier ; Elsevier BV (ISSN 0584-8547)
Published
2009
Language
EN
Field
Chemistry (Physical Sciences)

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