Differential Scattering Dynamics of F + CH4 -> HF(v,J) + CH3 Via High-Resolution IR Laser Dopplerimetry

Published

March 1, 2001

Author(s)

W W. Harper, S A. Nizkorodov, David Nesbitt

Abstract

Produce recoil data from F+ CH₄ -> HF(v,J)+ CH₃ reactive scattering are obtained using crossed supersonic jets and narrow band (δv = 0.0001cm^-1) IR laser direct absorption techniques. The high resolution IR profiles of HF(V,J) product exhibit extensive Doppler broadening that directly reflects quantum state-resolved translational distributions in the laboratory frame under single collision conditions. Analysis of Doppler profiles via singular value decomposition (SVD) methods yield information on state-resolved differential cross sections into the HF (v= I ) and HF (v=2) vibrational manifolds, which identify a propensity for forward/backward scattering (Icos(O)l nearly equal to} 1) vs. side scattering (Icos(O)l nearly equal to} 0) inthe center-of-mass frame.

Citation

Chemical Physics Letters

Volume

335

Issue

No. 5

Pub Type

Journals

Keywords

dynamics, hydrogen abstraction, reactive scattering

Citation

Harper, W. , Nizkorodov, S. and Nesbitt, D. (2001), Differential Scattering Dynamics of F + CH₄ -> HF(v,J) + CH₃ Via High-Resolution IR Laser Dopplerimetry, Chemical Physics Letters (Accessed November 3, 2025)