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Full-Text Articles in Physical Sciences and Mathematics
Listening To Lasers: Photoacoustic Gas Sensing, Michael Hopkins
Listening To Lasers: Photoacoustic Gas Sensing, Michael Hopkins
Student Research Symposium
Herein lies the makings of a sensor for gaseous materials due to the technique known as photo-acoustic spectroscopy. Whereby a gas filled metallic tube of known resonance has an impingement to its open aspect a beam of photons of known colour and at a specified rate such that the rate of incoming light corpuscles matches the natural standing wave frequency for the column of gas within said tube, to wit resonance. Through foresight of the molecular orbital theory and historic datums on the subject of infrared spectroscopy one naturally comes to the employment of absorbance transfiguring energy to kinetic motions …
Determination Of Mercury By Photoacoustic Spectroscopy, Robert Allen Cary
Determination Of Mercury By Photoacoustic Spectroscopy, Robert Allen Cary
Dissertations and Theses
A new detector for atomic spectroscopy was developed based on the photoacoustic principle. A simple system was constructed based on this detector and applied to the trace analysis of mercury. The detection limit was found to be about 0.2 μg/1 of mercury with a one milliliter sample.