Influence of the Duct Shape on the Q-Factor of a Photoacoustic Helmholtz Resonator

Mariusz Jarosław Suchenek

Abstract

The use of a Helmholtz resonator as a photoacoustic cell has many advantages. Its main drawback in high-sensitivity photoacoustic measurements is the relatively low values of Q-factors of such cells. One of the important loss sources which limit the quality factor of photoacoustic Helmholtz resonators is the rapid change of the cross section at the cavity–duct boundaries. This paper presents a design of a cell in which the shape of the duct was modified in such a way that the cross-section change is more gradual. A presented comparison of measurements of the Q-factors shows clearly that the Q-factor of the cell can be improved by almost a factor of two by such a modification of the duct shape.
Author Mariusz Jarosław Suchenek (FEIT / PE)
Mariusz Jarosław Suchenek,,
- The Institute of Electronic Systems
Journal seriesInternational Journal of Thermophysics, (A 20 pkt)
Issue year2011
Vol32
No4
Pages886-892
Keywords in EnglishAcoustic resonator, Condensed Matter Physics, Helmholtz resonator, Industrial Chemistry/Chemical Engineering, Mechanics, Photoacoustic cell design, Physical Chemistry
ASJC Classification3104 Condensed Matter Physics
DOIDOI:10.1007/s10765-010-0761-5
URL http://link.springer.com/article/10.1007/s10765-010-0761-5
Languageen angielski
Score (nominal)20
Publication indicators Scopus Citations = 3; WoS Citations = 3; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 1.108; WoS Impact Factor: 2011 = 0.953 (2) - 2011=1.08 (5)
Citation count*4 (2020-01-03)
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