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References 1. Pereira, N. R., Weber, B. V., Apruzese, J. P., Mosher, D., Schumer, J. W., Seely, J. F., Szabo, C. I., Boyer, C. N., Stephanakis, S. J., & Hudson, L. T. (2010). K-line spectra from tungsten heated by an intense pulsed electron beam. Rev. Sci. Instrum., 81, 10E302. DOI: 10.1063/1.3464268. 2. Słabkowska, K., Szymańska, E., Polasik, M., Pereira, N. R., Rzadkiewicz, J., Seely, J. F., Weber, B. V., & Schumer, J. W. (2014). Ionization energy shift of characteristic K x-ray lines from high-Z materials for plasma diagnostics. Phys. Plasmas, 21, 031216. DOI

Abstract

In the future International Thermonuclear Experimental Reactor (ITER), the interaction between the plasma and the tungsten chosen as the plasma-facing wall material imposes that the hot central plasma loses energy by X-ray emission from tungsten ions. On the other hand, the registered X-ray spectra provide alternative diagnostics of the plasma itself. Highly ionized tungsten emits extremely complex X-ray spectra that can be understood only after exhaustive theoretical studies. The detailed analyses will be useful for proper interpretation of soft X-ray plasma radiation expected to be registered on ITER-like machines, that is, Tungsten (W) Environment in Steady-state Tokamak (WEST). The simulations of the soft X-ray spectra structures for tungsten ions have been performed using the flexible atomic code (FAC) package within the framework of collisional-radiative (CR) model approach for electron temperatures and densities relevant to WEST tokamak.

Abstract

The trace element analysis system is presented using Proton Induced X-ray Emission (PIXE) analysis at a new Ion Beam Centre in Trnava. Standard PIXE system dedicated to the measurement of thick solid samples was extended by a new application for trace element analysis in aerosol samples. The sample holder was modified with respect to the dimensions of the aerosol filters, and a new sample holder and a Faraday cup (FC) were made. The first results of the PIXE aerosol analysis are presented in this paper. Furthermore, the geometric efficiency of the detection system was verified using 55Fe radioactive source emitting monoenergetic Mn X-ray lines. The measured data were compared with the Monte Carlo simulations regarding/disregarding the X-ray attenuation.