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ORIGINAL RESEARCH article
Front. Phys.
Sec. Optics and Photonics
Volume 13 - 2025 | doi: 10.3389/fphy.2025.1569734
This article is part of the Research Topic Acquisition and Application of Multimodal Sensing Information - Volume II View all 9 articles
Quartz-Enhanced Photoacoustic Spectroscopy for SF₆ Gas Matrix Based on a T-shaped Quartz Tuning Fork
Provisionally accepted- Taiyuan University of Technology, Taiyuan, China
This paper presents the design and fabrication of a T-shaped quartz tuning fork (QTF) for quartzenhanced photoacoustic spectroscopy (QEPAS) gas sensing systems, specifically targeting the detection of decomposition products in sulfur hexafluoride (SF₆). Through theoretical analysis and simulations, the geometrical parameters of the T-shaped QTF were optimized to achieve a low resonant frequency of 12.46 kHz and a quality factor of 4587 in SF₆ gas matrix. The optimized system demonstrated a minimum detection limit (MDL) of 1 ppm for C₂H₂ in SF₆ matrix, with a normalized noise equivalent absorption (NNEA) coefficient of 2.037 × 10⁻⁸ cm⁻¹ W/√Hz. This study successfully validates the effectiveness of the T-shaped QTF for sensitive gas detection in SF₆ matrix, providing a promising technical solution for online monitoring of decomposition products and fault diagnosis in SF₆-insulated equipment.
Keywords: QEPAS1, SF6 decompositions2, quartz tuning fork3, trace gas detection4, micro-resonator5
Received: 01 Feb 2025; Accepted: 20 Feb 2025.
Copyright: © 2025 Sun, Li, Gao and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Bo Sun, Taiyuan University of Technology, Taiyuan, China
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