Experimental Approach on the Electrical Capacity of a Plan-Parallel Ionization Chamber

摘要

This paper presents an experimental approach on the electrical capacity of an ionization chamber, of a special shape: the electrodes of the chamber are two plan-parallel plates. The distance between the two electrodes can be varied mechanically; in this way, one can obtain also a variation of the sensitive volume of detector. Such a transducer of a special shape and size is very important in the ionizing radiation metrology, because it allows the use of an absolute method for the measurement of the absorbed dose in beta rays beams or fields.