Radiation hardness of silicon semiconductor detectors under irradiation with fission products of 252Cf nuclide

Nuclear physics
Authors:
Mikulich Maxim Muratova Valentina Semenov Dmitriy Trushin Maxim V. Unzhakov Evgeniy Bazlov Nikolay Derbin Alexander Drachnev Ilia Kotina Irina Kon’kov Oleg I. Lomskaya Irina
Abstract:

The influence of the prolonged irradiation by fission products of 252Cf radionuclide on the operational parameters of silicon-lithium Si(Li) p-i-n detectors, Si surface barrier detectors and Si planar p+n detector was investigated. The obtained results revealed a linear shift of the fission fragment peaks positions towards the lower energies with increase of the irradiation dose for all investigated detectors. The rate of the peaks shift was found to depend strongly on the detector type and the strength of the electric field in the detector’s active region, but not on the temperature of irradiation (room or liquid nitrogen temperature). Based on the obtained results, the possibility of integration of the investigated types of Si semiconductor detectors in a radionuclide neutron calibration source is considered.