中国物理B ›› 2003, Vol. 12 ›› Issue (2): 189-197.doi: 10.1088/1009-1963/12/2/313
徐国盛, 万宝年, 宋梅
Xu Guo-Sheng (徐国盛), Wan Bao-Nian (万宝年), Song Mei (宋梅)
摘要: A one-dimensional cellular automaton is defined without the critical gradient rule (Δh>Δh_c) which is essential to the existence of avalanches in self-organized criticality (SOC) models. Instead, only the local diffusion rule is used, however, the characteristics of SOC, such as the bursty behaviour, power-law decay in fluctuation spectra, self-similarity over a broad range of scales and long-time correlations, are still observed in these numerical experiments. This numerical model is established to suggest that the bursty events and the incremental diffusion observed universally in fusion experiments do not necessarily imply the submarginal dynamics.
中图分类号: (Transport properties)