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- W2963981837 abstract "A proper treatment of heat propagation by radiation in plasmas requires the knowledge of theoptical transition Stark parameters of the atoms and ions involved. Despite the relevance ofCu-dominated plasmas for switching applications, the available Stark parameter data for thismetal is scarce. Here, we investigate the temperature-dependence of the light emission spectra of Cudominatedelectric arcs at atmospheric pressures and for currents below 2 kA. While thewavelength of the detected lines remains nearly constant above 1 kA, pronounced Starkredshifts are observed for transitions from Cu 3d94s5s with increasing current from 0 to 1 kA.A lineshape analysis of the light emission spectra reveals that between 5000 and 10000 K, thewavelength of these transitions increases linearly with increasing temperature. Based on thisobservation, we propose a simple method for the temperature diagnostic of plasmas thatrequires neither an absolute calibration of the intensity of the detected signal, nor complexsimulation tools. Finally, we show that compared to other assumptions made when simulatingheat propagation by radiation in switching devices, neglecting Stark shifts when computing theabsorption of Cu-dominated plasmas is a reasonable approximation." @default.
- W2963981837 created "2019-07-30" @default.
- W2963981837 creator A5079528894 @default.
- W2963981837 date "2019-07-01" @default.
- W2963981837 modified "2023-09-27" @default.
- W2963981837 title "Temperature monitoring of Cu plasmas by Stark shift measurements" @default.
- W2963981837 hasPublicationYear "2019" @default.
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