Ballistic Deposition was proposed by Vold and Sutherland as a model
for colloidal aggregation. These early works were later extended to simulate the process
of vapor deposition. In general, Ballistic Deposition models involve (d + 1)-dimensional
particles which rain down sequentially at random onto a d-dimensional substrate; when a
particle arrives on the existing agglomeration of deposited particles, it sticks to the rst
particle it contacts, which may result in lateral growth. In this paper we present a rst
P system model for Ballistic Deposition with d = 1.Ministerio de Educación y Ciencia TIN2006-13425Junta de Andalucía TIC-58
