Cluster growth through evaporation processes

Y. Hayakawa, M. Matsushita

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A new cluster-growth model in which all surface sites (tip particles) of immobile clusters can evaporate with equal probability and diffuse until they stick to other clusters has been proposed and studied by using Monto Carlo simulations. This model is a multicluster version of the Botet-Jullien (BJ) model [Botet and Jullien, Phys. Rev. Lett. 55, 1943 (1985)]; particles, initially dispersed at random and later evaporated from clusters, random-walk and stick upon collision to other particles or clusters to form larger clusters. The cluster-size distribution ns(t), which is the number of clusters of size s at time t, can be well represented by the dynamic scaling form ns(t)s-2f(s/tz), where z(1/2 in the two-dimensional case and in one dimension z(1/3. Moreover, the size and form of each cluster are found to fluctuate drastically throughout the growth, giving rise to the 1/f-like spectra of fluctuations of total number of the tip particles.

    Original languageEnglish
    Pages (from-to)2871-2874
    Number of pages4
    JournalPhysical Review A
    Volume40
    Issue number5
    DOIs
    Publication statusPublished - 1989 Jan 1

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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