CAVITY RINGDOWN LASER-ABSORPTION SPECTROSCOPY DETECTION OF FORMYL (HCO) RADICAL IN A LOW-PRESSURE NAME

Authors
SCHERER JJ RAKESTRAW DJ
Citation
Jj. Scherer et Dj. Rakestraw, CAVITY RINGDOWN LASER-ABSORPTION SPECTROSCOPY DETECTION OF FORMYL (HCO) RADICAL IN A LOW-PRESSURE NAME, Chemical physics letters, 265(1-2), 1997, pp. 169-176
Citations number
35
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
265
Issue
1-2
Year of publication
1997
Pages
169 - 176
Database
ISI
SICI code
0009-2614(1997)265:1-2<169:CRLSDO>2.0.ZU;2-D
Abstract
The formyl radical has been detected via the (A) over tilde - (X) over tilde system in a low pressure CH4/N-2/O-2 flame using cavity ringdow n laser absorption spectroscopy. The direct absorption data obtained i n these initial studies allows determination of the absolute HCO conce ntration in the flame of ca. 2.1(+/- 0.9) x 10(13) mol cm(-3), which i s in excellent agreement with flame chemistry simulations. The extrapo lated detection limit at 300 K of approximate to 1.4(+/-0.6) x 10(11) mol cm(-3) is comparable to that of other methods, including intracavi ty laser absorption spectroscopy.