On the signature of tensile blobs in the scattering function of a stretched polymer

Details On the signature of tensile blobs in the scattering function of a stretched polymer On the signature of tensile blobs in the scattering function of a stretched polymer

1997-08-29

arxiv.org/abs/cond-mat/9708233v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures, to appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.79.2990

We present Monte Carlo data for a linear chain with excluded volume subjected to a uniform stretching. Simulation of long chains (up to 6000 beads) at high stretching allows us to observe the signature of tensile blobs as a crossover in the scaling behavior of the chain scattering function for wave vectors perpendicular to stretching. These results and corresponding ones in the stretching direction allow us to verify for the first time Pincus prediction on scaling inside blobs. Outside blobs, the scattering function is well described by the Debye function for a stretched ideal chain.

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