Irradiation Field Geometric

The geometric irradiation field is the irradiation field, which is determined by the conventional geometric boundary of the radiation beam.

The geometric irradiation field is used to describe the distribution of radiation in space and is determined based on the geometric characteristics of the radiation source. It depends on the size and shape of the beam, the distance from the source and the divergence angles of the radiation.

The boundary of the geometric irradiation field is usually drawn at the level where the radiation flux density drops to a certain value (for example, to 50% of the maximum). Within this boundary, the radiation is considered to be uniformly distributed.

Thus, the geometric irradiation field gives an approximate, simplified picture of the radiation distribution and is used for primary estimates and calculations in radiation physics. A more accurate analysis requires consideration of the real physical radiation field, taking into account all the nuances of the spatial distribution.

Irradiation field is a region of space in which the interaction of ionizing radiation with matter occurs or may occur. It determines the spatial density of the particle flux, the conditions for the occurrence of the primary reaction and its chemical environment, as well as the conditions for the subsequent passage of particles. The area of ​​radiation interaction is important for the design of nuclear technology installations, for the evaluation and analysis of the results of experimental studies.

The concept of irradiation field is associated with light or X-ray microscopes, cameras for transmitting and recording signals, spectrometers and filters. Often