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Proceedings Paper

Quantitative determination of hydrogen isotope in titanium using LIBS
Author(s): Yang Du; Qianqian Wang; Ruizhu Yang; Xutai Cui
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Paper Abstract

In this paper, we investigated how to use calibration-free (CF) LIBS to quantitatively analyze hydrogen and deuterium in titanium samples in ambient helium gas. First, the LIBS spectra of two metal titanium samples with hydrogen (H)/deuterium (D) concentration ratios of 1.5 (0.6 : 0.4) and 0.67 (0.4 : 0.6) were obtained by a LIBS experiment set-up. Then, based on the Boltzmann plot of the Ti elements, the plasma electron temperatures of the two samples were determined to be 5746K and 5736K, respectively. The corresponding electron density measured by the Stark broadening profile of Ti II (375.9nm) is 7 × 1015 cm-3 and 7.73 × 1015 cm-3. According to the experimental data, the McWhirter criterion was verified and LIBS plasma was in LTE, so CF-LIBS method can be used to analyze the concentration of hydrogen isotopes. The H/D concentration ratios of the two samples were calculated using free calibration method to be 1.48 and 0.81, and the relative errors were 1.33% and 20.9%, respectively. The experimental results demostrated that laser-induced breakdown spectroscopy combined with the free calibration method can be applied in the quantitative analysis of hydrogen isotope.

Paper Details

Date Published: 18 December 2019
PDF: 8 pages
Proc. SPIE 11337, AOPC 2019: Optical Spectroscopy and Imaging, 1133712 (18 December 2019); doi: 10.1117/12.2547656
Show Author Affiliations
Yang Du, Beijing Institute of Technology (China)
Qianqian Wang, Beijing Institute of Technology (China)
Ruizhu Yang, Institute of Chemical Materials (China)
Xutai Cui, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 11337:
AOPC 2019: Optical Spectroscopy and Imaging
Jin Yu; Zhe Wang; Vincenzo Palleschi; Mengxia Xie; Yuegang Fu, Editor(s)

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