Photoacoustic method for measuring concentration of chemical species
Abstract
The present invention is a transducer for photoacoustic detection having at least two piezoelectric elements wherein at least a first piezoelectric element has a first frequency and at least a second piezoelectric element has a second frequency. The improvement according to the present invention is that at least two piezoelectric elements are longitudinal elements for longitudinal waves; and the first frequency is different from said second frequency. In other words, the invention is a multi-frequency longitudinal transducer for photoacoustic detection.
- Inventors:
-
- West Richland, WA
- Richland, WA
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 873774
- Patent Number(s):
- US 6244101
- Application Number:
- 09/322,910
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- photoacoustic; method; measuring; concentration; chemical; species; transducer; detection; piezoelectric; elements; element; frequency; improvement; according; longitudinal; waves; words; multi-frequency; piezoelectric element; longitudinal waves; chemical species; chemical specie; electric element; piezoelectric elements; longitudinal wave; measuring concentration; electric elements; /73/356/
Citation Formats
Autrey, S Thomas, Posakony, Gerald J, Amonette, James E, and Foster-Mills, Nancy S. Photoacoustic method for measuring concentration of chemical species. United States: N. p., 2001.
Web.
Autrey, S Thomas, Posakony, Gerald J, Amonette, James E, & Foster-Mills, Nancy S. Photoacoustic method for measuring concentration of chemical species. United States.
Autrey, S Thomas, Posakony, Gerald J, Amonette, James E, and Foster-Mills, Nancy S. 2001.
"Photoacoustic method for measuring concentration of chemical species". United States. https://www.osti.gov/servlets/purl/873774.
@article{osti_873774,
title = {Photoacoustic method for measuring concentration of chemical species},
author = {Autrey, S Thomas and Posakony, Gerald J and Amonette, James E and Foster-Mills, Nancy S},
abstractNote = {The present invention is a transducer for photoacoustic detection having at least two piezoelectric elements wherein at least a first piezoelectric element has a first frequency and at least a second piezoelectric element has a second frequency. The improvement according to the present invention is that at least two piezoelectric elements are longitudinal elements for longitudinal waves; and the first frequency is different from said second frequency. In other words, the invention is a multi-frequency longitudinal transducer for photoacoustic detection.},
doi = {},
url = {https://www.osti.gov/biblio/873774},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}
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Works referenced in this record:
A Pulsed Photoacoustic Microcalorimeter for the Detection of Upper Excited-State Processes and Intersystem Crossing Yields
journal, July 1989
- Lynch, Daniel; Endicott, John F.
- Applied Spectroscopy, Vol. 43, Issue 5