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Updated: Oct 11, 2025

3D Depth Profile Reconstruction of Segregated Impurities Using Secondary Ion Mass Spectrometry
Published on: April 29, 2020
Swift evaluation of electron density profiles obtained by the alkali beam emission spectroscopy technique using
M Vécsei1, G Anda1, O Asztalos1
1Centre for Energy Research, Konkoly-Thege Miklós út 29-33, 1121 Budapest, Hungary.
Abstract:
A method is presented for the swift reconstruction of electron density profiles measured by the alkali beam emission spectroscopy. It is based on the linearization of the governing rate equations and leads to a direct calculation for obtaining the profiles. The uncertainties of the measurement are incorporated into the problem through the utilization of Tikhonov regularization and the generalized least squares method. An approximation for the uncertainty of the reconstructed density data is calculated as well. The applicability of the method is tested against both simulated and real experimental results of the W7-X stellarator.
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