Reaction rates for fluctuating barriers with asymmetric noise

被引：2

作者：

Ankerhold, J

Pechukas, P

机构：

[1] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[2] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 111卷 / 11期

关键词：

D O I：

10.1063/1.479748

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermally activated escape over a high barrier fluctuating randomly in time is investigated for asymmetric flipping rates. By means of the Fokker-Planck approach approximate methods developed for symmetric noise are applied to calculate the relaxation eigenvector and ultimate relaxation rate for piecewise linear potentials in the Smoluchowski limit. The ranges of validity of these approaches are discussed. Furthermore, the exact result for weak thermal noise but arbitrary barrier flipping rates is derived and its dependence on the asymmetry studied in detail. (C) 1999 American Institute of Physics. [S0021-9606(99)51235-X].

引用

页码：4886 / 4892

页数：7

共 20 条

[1] TRANSIENT KINETICS OF CHEMICAL-REACTIONS WITH BOUNDED DIFFUSION PERPENDICULAR TO THE REACTION COORDINATE - INTRAMOLECULAR PROCESSES WITH SLOW CONFORMATIONAL-CHANGES [J].