Presentation Type
Poster
Location
Portland State University
Start Date
5-4-2016 12:00 PM
End Date
5-4-2016 2:00 PM
Subjects
Photoabsorption, Chemical analysis, Laser spectroscopy
Abstract
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 within a known gas species as a mechanism for spectroscopic analysis. Many fortnights gone by a device of these humours was constructed and found not wanting in capability, this device shall henceforth be described in placard shewing and by the telling of its constructor.
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Persistent Identifier
http://archives.pdx.edu/ds/psu/17159
Included in
Listening to Lasers: Photoacoustic Gas Sensing
Portland State University
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 within a known gas species as a mechanism for spectroscopic analysis. Many fortnights gone by a device of these humours was constructed and found not wanting in capability, this device shall henceforth be described in placard shewing and by the telling of its constructor.