Award Address (Irving Langmuir Award in Chemical Physics, sponsored by General Electric Global Research). Probing chemical dynamics with negative ions

PHYS 224

Daniel M Neumark, dneumark@berkeley.edu, Department of Chemistry and Chemical Sciences Division, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA 94720
This talk will focus on two examples of how fundamental issues in chemical dynamics can be addressed through negative ion photodetachment experiments. First, the investigation of pre-reactive complexes and bimolecular transition states will be discussed, using the recently developed anion slow electron velocity-map imaging (SEVI) technique, which yields photoelectron energy resolution as high as 2-3 cm-1. SEVI of the appropriate anions yields highly structured spectra of the Cl.H2 and Cl.CH4 prereactive complexes and the transition state complex for the F + CH4 reaction. Secondly, time-resolved photoelectron imaging results on cluster anions will be discussed with the goal of understanding the relaxation dynamics of excess electrons in clusters. Results will be presented for negatively charged water, methanol, acetonitrile, and mercury clusters.
 

Physical Chemistry Awards Symposium
1:00 PM-5:00 PM, Tuesday, April 8, 2008 Morial Convention Center -- Rm. 338, Oral

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008