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光声池作为光声光谱仪的重要部件有许多不同的设计。亥姆霍兹共振光声池则是应用于低频范围的声共振光声池。为寻求这种光声池的优化设计,本文从理论分析着手,讨论共振频率和光声池结构参数的关系以及光声信号的共振增强,并在实验上作了验证。本文导出的修正公式使实验结果理论计算很好符合,对具体设计具有实际意义。文中最后提出了优化设计的实施方案
Photoacoustic cell as a photoacoustic spectrometer, an important component of many different designs. Helmholtz resonant photoacoustic cell is applied to the low frequency range of acoustic resonance photoacoustic cell. In order to seek the optimal design of this photoacoustic cell, this paper starts with the theoretical analysis, and discusses the relationship between the resonance frequency and the structure parameters of the photoacoustic cell and the resonance enhancement of the photoacoustic signal. The experiment is validated. The correction formulas derived in this paper are in good agreement with the theoretical calculation of experimental results, which is of practical significance to the specific design. The article finally put forward the optimization design of the implementation plan