Source:http://linkedlifedata.com/resource/pubmed/id/21369069
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
2011-3-3
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pubmed:abstractText |
We report on the development of a Faraday rotation spectroscopy (FRS) instrument using a DFB diode laser operating at 2.8 µm for the hydroxyl (OH) free radical detection. The highest absorption line intensity and the largest gJ value make the Q (1.5) double lines of the 2?3/2 state (? = 1 ? 0) at 2.8 µm clearly the best choice for sensitive detection in the infrared region by FRS. The prototype instrument shows shot-noise dominated performance and, with an active optical pathlength of only 25 cm and a lock-in time constant of 100 ms, achieves a 1? detection limit of 8.2 × 10(8) OH radicals/cm3.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
1094-4087
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:day |
31
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pubmed:volume |
19
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2493-501
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pubmed:meshHeading | |
pubmed:year |
2011
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pubmed:articleTitle |
Sensitive and selective detection of OH radicals using Faraday rotation spectroscopy at 2.8 µm.
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pubmed:affiliation |
Laboratoire de Physicochimie de l’Atmosphère, Université du Littoral Côte d’Opale, 189A Av Maurice Schumann, 59140 Dunkerque, France.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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