The influence of controlled electron‐seeking addition agents of the melt on stilbene single crystal structure and radioluminescence properties

Abstract

The study of certain radioluminescence characteristics of stilbene single crystals is performed. Doping the stilbene melt with electron-seeking (ES) addition agents of benzol and benzophenone halogen derivatives allowed to control the structure perfection of the crystal grown. The root-mean-square random orientation of single crystal mosaic structure, and concentration of the deep traps of charge carriers and excitons were minimum for the single crystals grown from the melt containing 0.1 molyo ES addition agent. Doping the melt with ES addition agents did not cause the appearance of additional luminescence impurity centres or quench luminescence centres in the single crystals grown.

Development of large-area composite stilbene scintillator for fast neutron detection

“…However, it is difficult to make a single-crystal stilbene scintillator larger than a few centimeters, and it is also prone to damage from thermal and mechanical shock [4,11]. The stilbene single crystals used in this study were grown using the Bridgeman-Stockbarger method [12], whose typical properties are presented in Table 1 [13]. The commercial stilbene single crystals, with dimensions of 25 mm (D) × 20 mm (H) and 50 mm (D) × 40 mm (H), were used in this study.…”

Performance improvement of neutron flux monitor at KSTAR

“…To overcome the limitation, special electronics are required to reduce data processing time to real-time measurement of neutrons in Table 1. General properties of stilbene crystal [15].…”