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. 2023 Sep 26;13:16087. doi: 10.1038/s41598-023-42746-2

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© The Author(s) 2023, corrected publication 2023

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(a) VUV spectrum in the wavelength range of 17–24 nm recorded without (red curve) and with (black curve) argon puff for shot no. 34528 and experimental brightness of Ar¹³⁺ (b) and Ar¹⁴⁺ (c) line emissions at 18.79 and 22.11 nm respectrively for shot no. 34528 showing Gaussian fittings together with residues.