Effect of Hindering Potential on the Stretched Chain Configuration

抄録

Averages of the second and the fourth powers of chain end separation for a chain composed of N bonds in hindered rotation under no stretching force are calculated to those terms of the order of unity and of N, respectively. These averages are made use of to discuss the non-Gaussian behavior under a stretching force, and this stretching effect is examined especially for free rotation, hindered rotation in a n-fold periodic potential, and trans-gauche configurations. Average fractions of trans and gauche configurations in a stretched state are obtained from calculating internal energy of the chain.