Basic Study of Electron Irradiation Technique in Disinfestation Process of Maize

摘要

Electron irradiation technique for disinfestation process of maize is studied on a simple model of continuous-gravity-feed irradiator. Dose and dose rate are evaluated by the calculation of electron current density in the radiation field of a 2.5 MeV electron accelerater assuming the flowing absorber is uniformly distributed. Various factors contributing to dose dispersion among separate grains are studied in relation to dose uniformity ratio and beam utilization efficiency, and the critical velocity of grains necessary for the dose uniformity after passing through scanned electron beam is obtained. Dosimetric techniques are also discussed for measurement of absorbed dose and monitoring of irradiation parameters. (Atomindex citation 17:032156)