H. Heinzelmann, D. Pohl
Applied Physics A Solids and Surfaces
A spectrophone with low resonant frequency compatible with the repetition frequency of a pulsed discharge CO laser is described. The spectrophone is used for humidity detection in hydrogen and air. The simple and inexpensive system provides a detection capacity of 10-100ppb/ {Mathematical expression}. The responsivity of the resonant spectrophone is interpreted taking the dependence of the acoustical quality factor on the geometry into account. © 1978 Springer-Verlag.
H. Heinzelmann, D. Pohl
Applied Physics A Solids and Surfaces
I.P. Batra, R.H. Enns, et al.
physica status solidi (b)
D. Pohl
Review of Scientific Instruments
D. Pohl, R. Badertscher, et al.
Applied Optics