Заглавие | On the two-point correlation functions in random arrays of nonoverlapping spheres |
Вид публикация | Journal Article |
Година на публикуване | 1999 |
Автори | Markov K |
Списание | Annuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique |
Том | 91 |
Issue | Livre 2 - Mathématiques Appliquée et Informatique |
Pagination | 151-175 |
ISSN | 0205-0808 |
ключови думи | absorption problem, correlation variational bounds, dispersions of spheres, random media |
Резюме | For a random dispersion of identical spheres, the known two-point correlation functions like "particle-center", "center-surface", "particle-surface", etc., are studied. Geometrically, they give the probability density that two points, thrown at random, hit in various combinations a sphere's center, a sphere, or a sphere's surface. The basic result of the paper is a set of simple and integral representations of one and the same type for these correlations by means of the radial distribution function for the set of sphere's centers. The derivations are based on the geometrical reasoning, recently employed by Markov and Willis when studying the "particle-particle" correlation. An application, concerning the effective absorption strength of a random array of spherical sinks, is finally given. |
1991/95 MSC | 60G60, 60H15, 49K45 |
Прикачен файл | Размер |
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91-151-175.pdf | 1.98 MB |