Calibration of a CO₂ laser-based ethylene photoacoustic detector

Authors

Raymund Sarmiento ⋅ PH Department of Physics, University of San Carlos
Dioscoro Villagonzalo ⋅ PH Department of Physics, University of San Carlos
Adonis Flores ⋅ PH Department of Physics, University of San Carlos
Erwin Orosco ⋅ PH Department of Physics, University of San Carlos
Roland Otadoy ⋅ PH Department of Physics, University of San Carlos
Ben Zuidberg ⋅ PH Department of Physics, University of San Carlos
Cor Sikkens ⋅ NL Department of Molecular and Laser Physics, Radboud University, The Netherlands

Abstract

We have calibrated an extracavity CO₂ laser-based photoacoustic detector for ethylene. The 10P₁₄ line at 943.43 cm⁻¹ was selected as it is highly absorbed by ethylene molecules. The measured absorption coefficient is (34 ± 1.8) cm⁻¹atm⁻¹. The detector yields a photoacoustic signal of (3.6 ± 0.16) mV/W per 1 ppm of ethylene. A measurement of ethylene emitted by an overripe banana was done to demonstrate its sensitivity.

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Issue

2005: Proceedings of the 23rd Samahang Pisika ng Pilipinas Physics Congress

Physics connects
26-28 October 2005, Central Philippine University, Iloilo City

Article ID

SPP-2005-PB-37

Section

Poster Session PB

Published

2005-10-26

How to Cite

[1]

R Sarmiento, D Villagonzalo, A Flores, E Orosco, R Otadoy, B Zuidberg, and C Sikkens, Calibration of a CO2 laser-based ethylene photoacoustic detector, Proceedings of the Samahang Pisika ng Pilipinas 23, SPP-2005-PB-37 (2005). URL: https://proceedings.spp-online.org/article/view/SPP-2005-PB-37.