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. 2023 Jul 21;13:11799. doi: 10.1038/s41598-023-38508-9

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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⁵⁵Fe spectrum (a) obtained at $1.125 MHz$ showing the spectroscopic capabilities of the sensor at $18^{\circ} C$ and 300-ns integration time and increased flat-top time of $500 ns$ . (b) Zoom in the Mg peak region and a reference spectrum of a macro pixel from an early development stage sample of the CMOS-DEPFET fabrication measured at $- 50^{\circ} C$ and $3$ -μs shaping time (red curve).