Abstract.
The results of theoretical and experimental studies of sensitivity of a resonant photoacoustic Helmholtz resonator detector for gas flowing through a photoacoustic cell under reduced pressure are presented. The measurements of the sensitivity and ultimate sensitivity of the differential photoacoustic cell were performed with a near-IR room-temperature diode laser using the well-known H2O absorption line (12496.1056 cm-1) as a reference. The measured value of the sensitivity (6–17 Pa W m-1) is in satisfactory agreement with the calculated one, which equals 6–35 Pa W m-1. The obtained value of the ultimate sensitivity ((3–5)×10-7 W m-1 Hz-1/2) provides measurements of the concentration of molecules at the ppb–ppm level.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received: 19 April 2001 / Revised version: 18 September 2001 / Published online: 7 November 2001
Rights and permissions
About this article
Cite this article
Kapitanov, V., Ponomarev, Y., Song, K. et al. Resonance photoacoustic spectroscopy and gas analysis of gaseous flow at reduced pressure. Appl Phys B 73, 745–750 (2001). https://doi.org/10.1007/s003400100727
Issue Date:
DOI: https://doi.org/10.1007/s003400100727