HR: 1340h
AN: A53C-0913    [Abstracts]
TI: Development of a Single Photon Laser Induced Fluorescence Technique for the Detection of Atmospheric NO
AU: * Hecobian, A
EM: ahecobian@eas.gatech.edu
AF: Georgia Institute of Technology, Department of Earth and Atmospheric Sciences 311 Ferst Dr., Atlanta, GA 30332 United States
AU: Case, A T
EM: acase@eas.gatech.edu
AF: Georgia Institute of Technology, Department of Earth and Atmospheric Sciences 311 Ferst Dr., Atlanta, GA 30332 United States
AU: Mastromarino, J
EM: opodude@yahoo.com
AF: Georgia Institute of Technology, Department of Earth and Atmospheric Sciences 311 Ferst Dr., Atlanta, GA 30332 United States
AU: Tan, D
EM: dtan@eas.gatech.edu
AF: Georgia Institute of Technology, Department of Earth and Atmospheric Sciences 311 Ferst Dr., Atlanta, GA 30332 United States
AB: The NO$_{x}$ family (NO$_{2}$ and NO) plays a pivotal role in the photochemistry of the atmosphere. NO$_{x}$ affects the concentration of the OH radical in the troposphere. It is also an important component of production of ozone in the troposphere. Having a clear idea of the spatial and temporal distribution of NO$_{x}$ is therefore important in obtaining a clear picture of the processes that contribute to the overall photochemistry of the atmosphere. Laser-induced fluorescence (LIF) is one of the methods of direct measurement of NO and NO$_{2}$ concentrations. A new method using a kHz pulse repetition frequency YAG pumped Ti:Sapphire laser using single photon excitation of NO at 226 nm wavelength is described and demonstrated. The NO fluorescence is observed at 247 nm wavelength. This is part of a multispecies detection system designed to measure a suite of species important to atmospheric composition and photochemistry in a compact package suitable for airborne and other field measurements.
DE: 0317 Chemical kinetic and photochemical properties
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting