Modification of plastic scintillator for neutron registration

Abstract

The paper presents the main results of neutron sensors development on the base on the plastic scintillators (PS). The role of the excitation energy in the neutrons detection. It has been established that the ability of the neutron gamma separation significantly improves with an increase in the concentration of the activator molecules, but at the same time leads to a considerable degradation of its mechanical properties. It is shown that the use of sterically modified molecules as an activator of the polymer base not only does not impair the properties of gamma separation neutron but also leads to a significant improvement of mechanical properties of PS.