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研究了SAW尾形链,采用精确计数和Monte Carlo模拟方法求得d维(d=2,3)SAW尾形链的构象数C_1~d和均方末端距[h_1~d(N)]~2及其分量随链长N的变化关系.发现它们与自由SAW链一样都服从标度律,从模拟数据拟合求出了这些SAW尾形链的临界指数.还表明短链SAW在壁的法向与NRW尾形链一样有所伸展,均方末端距的法向分量几乎是平行分量的2倍;但随N→∞,链自回避效应对壁的作用有所屏蔽,这与NRW尾形链有明显不同.
The SAW tail-shaped chain was studied and the conformation number C_1 ~ d and the mean square end distance [h_1 ~ d (N)] ~ 2 of dW (d = 2,3) SAW tail chain were calculated by exact counting and Monte Carlo simulation. And their components change with the chain length N. It is found that they all obey the scaling law as the free SAW chains, and the critical indices of these SAW tail-shaped chains are obtained from the simulated data fitting. It is also shown that the short- The NRW coccyx chain extends the same way and the normal component of the mean square end distance is almost double the parallel component. However, with N → ∞, the effect of the chain self-avoiding effect on the wall is shielded, which is obviously different from the NRW cochlear chain .