Quartz-enhanced photoacoustic spectroscopy (QEPAS) with a single-tube acoustic microresonator (AmR) inserted between the prongs of a custom quartz tuning fork (QTF) was developed, investigated, and optimized experimentally. Due to the high acoustic coupling efficiency between the AmR and the QTF, the single-tube on-beam QEPAS spectro-phone configuration improves the detection sensitivity by 2 orders of magnitude compared to a bare QTF. This approach significantly reduces the spectrophone size with respect to the traditional on-beam spectrophone configuration, thereby facilitating the laser beam alignment. A 1(7 normalized noise equivalent absorption coefficient of 1.21 × 10-8 cm-1. W/√Hz was obtained for dry CO2 detection at normal atmospheric pressure.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
|Titolo:||Single-tube on-beam quartz-enhanced photoacoustic spectroscopy|
|Data di pubblicazione:||2016|
|Appare nelle tipologie:||1.1 Articolo in rivista|