ABSTRACT
In solids the stopping power for a charged particle is much higher than in gases due to the larger density. Hence, already thin layers of detector give sufficiently large signals to detect the impact of a charged particle. As a consequence, neither the spacing of primary ionisation clusters, nor diffusion of the charge carriers poses a practical limitation for the determination of the position in a solid detector, and δ-electrons are not a concern, because of their shorter range. Another advantage is that the sensor material is itself mechanically stable and does not need a container.
