Influence of the Duct Shape on the Q-Factor of a Photoacoustic Helmholtz Resonator
Mariusz Jarosław Suchenek
AbstractThe 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.
|Journal series||International Journal of Thermophysics, (A 20 pkt)|
|Keywords in English||Acoustic resonator, Condensed Matter Physics, Helmholtz resonator, Industrial Chemistry/Chemical Engineering, Mechanics, Photoacoustic cell design, Physical Chemistry|
|Publication indicators||= 3; = 3; : 2011 = 1.108; : 2011 = 0.953 (2) - 2011=1.08 (5)|
|Citation count*||4 (2020-01-03)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.