Collision of Polymers in a Vacuum

Details Collision of Polymers in a Vacuum Collision of Polymers in a Vacuum

2010-06-10

arxiv.org/abs/1006.2157v2

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 6 figures

Scientific paper

In a number of experimental situations, single polymer molecules can be suspended in a vacuum. Here collisions between such molecules are considered. The limit of high collision velocity is investigated numerically for a variety of conditions. The distribution of contact times, scattering angles, and final velocities are analyzed. In this limit, self avoiding chains are found to become highly stretched as they collide with each other, and have a distribution of scattering times that depends on the scattering angle. The velocity of the molecules after the collisions is similar to predictions of a model assuming thermal equilibration of molecules during the collision. The most important difference is a significant subset of molecules that inelastically scatter but do not substantially change direction.

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