### Session J4: Atomic, Molecular, and Optical Physics II

10:15 AM–12:51 PM, Saturday, March 20, 2010
Robert Lee Moore Hall Room: 5.104

Abstract ID: BAPS.2010.TSS.J4.5

### Abstract: J4.00005 : Chaotic scattering in a molecular system

11:03 AM–11:15 AM

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#### Authors:

Alex Barr
(University of Texas at Austin)

Kyungsun Na
(University of Texas at Austin)

Linda Reichl
(University of Texas at Austin)

Christof Jung
We examine the classical scattering dynamics of a chlorine atom interacting with an HO molecule using a two-dimensional model in which the HO bond length is held fixed. The classical phase space for this system is dominated by an unusually complicated homoclinic tangle. I will show how the fractal structure of the homoclinic tangle is encoded in all scattering functions and how this fractal structure can be easily investigated by defining a step number'' for each scattering trajectory.