title: ÐÑÐ¾ÑÐµÑÑÑ Ð¼Ð¸Ð³ÑÐ°ÑÐ¸Ð¸ Ð½Ð¾ÑÐ¸ÑÐµÐ»ÐµÐ¹ Ð·Ð°ÑÑÐ´Ð° Ð² ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÐ°Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð², Ð°ÐºÑÐ¸Ð²Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ce Ð¸ Pr
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Charge carrier migration processes in scintillators based on garnets activated by Ce and Pr
Creators: name: Ð¢ÑÑÐ²Ð°ÑÑÐ»Ð¸Ð½Ð°, Ð¢Ð°Ð½ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÑ
Ð³ÑÐ°Ð½Ð°ÑÑ
ÐºÐµÑÐ°Ð¼Ð¸ÐºÐ°
YAG
Ð¿ÑÐ¸Ð¼ÐµÑÐ¸
Ð¾ÑÐ¶Ð¸Ð³
Ð¿Ð¾ÑÐ»ÐµÑÐ²ÐµÑÐµÐ½Ð¸Ðµ
Ð¢Ð¡Ð
scintillators
garnets
ceramics
dopants
annealing
afterglow
TSL

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¾ÑÐ¶Ð¸Ð³Ð¾Ð² Ð¸ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð¿ÑÐ¸Ð¼ÐµÑÐµÐ¹ Ð½Ð° Ð¿Ð¾ÑÐ»ÐµÑÐ²ÐµÑÐµÐ½Ð¸Ðµ Ð¸ ÑÐµÑÐ¼Ð¾ÑÑÐ¸Ð¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ñ ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÐ¾Ð² Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð², Ð°ÐºÑÐ¸Ð²Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ CeÐ¸ Pr. ÐÐ°Ð´Ð°ÑÐ¸, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÐµÑÐ°Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1.ÐÐ·ÑÑÐµÐ½Ð¸Ðµ Ð»Ð¸ÑÐµÑÐ°ÑÑÑÑ Ð¾ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ°Ñ Ð² ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÐ°Ñ Ð¸ ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¸Ð¾Ð½Ð½ÑÑ ÐºÐµÑÐ°Ð¼Ð¸ÐºÐ°Ñ Ð¼ÑÐ»ÑÑÐ¸ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ½ÑÑ Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð². 2.ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ¾Ð² Ð¿Ð¾ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸Ðº Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð², Ð°ÐºÑÐ¸Ð²Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ce3+Ð¸ Pr3+. 3.ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¾ÑÐ¶Ð¸Ð³Ð° Ð² ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð°ÑÐ¼Ð¾ÑÑÐµÑÐ°Ñ Ð¸ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ð¸ ÑÐµÑÐ¸Ñ Ð½Ð° Ð¿Ð¾ÑÐ»ÐµÑÐ²ÐµÑÐµÐ½Ð¸Ðµ ÐºÐµÑÐ°Ð¼Ð¸Ðº. 4.ÐÑÑÑÐ½ÐµÐ½Ð¸Ðµ ÑÐ¾Ð»Ð¸ Ð¸Ð¾Ð½Ð° CrÐ² ÑÐµÑÐ¼Ð¾ÑÑÐ¸Ð¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ¸Ð¸ YAG:Pr. 5.Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð²ÑÐ±Ð¾ÑÑ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¸ Ð´Ð»Ñ Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð², Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ¾Ð² Ð² ÐÐ¢ Ð¸ ÐÐ­Ð¢. Ð Ð°Ð±Ð¾ÑÐ° Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð½Ð° ÐºÐ°ÑÐµÐ´ÑÐµ Ð­ÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð°Ñ ÑÐ¸Ð·Ð¸ÐºÐ° Ð² Ð¡ÐÐ±ÐÐ£ Ð¸Ð¼. ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾, Ð² Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ¸Ð¸ ÑÐ¸Ð·Ð¸ÐºÐ¸ ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÐ¾Ð².ÐÑÐ»Ð¸ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ, Ð¿Ð¾ÐºÐ°Ð·ÑÐ²Ð°ÑÑÐ¸Ðµ Ð½Ð°Ð³Ð»ÑÐ´Ð½Ð¾, ÐºÐ°ÐºÐ¸Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð¼ Ð¾ÑÐ¶Ð¸Ð³ Ð² ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð°ÑÐ¼Ð¾ÑÑÐµÑÐ°Ñ Ð²Ð»Ð¸ÑÐµÑ Ð½Ð° ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½ÑÑ ÑÐµÐ½ÑÑÐ¾Ð² Ce4+. Ð¢Ð°ÐºÐ¶Ðµ Ð±ÑÐ»Ð¾ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¾ ÐºÐ°Ðº ÑÐ°Ð·Ð»Ð¸ÑÐ½Ð°Ñ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ñ Ð¿ÑÐ¸Ð¼ÐµÑÐµÐ¹ CrÐ² Ð¿Ð¾ÑÐ¾ÑÐºÐ°Ñ YAG:PrÐ²Ð»Ð¸ÑÐµÑ Ð½Ð° ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÐ¼ÑÑ Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð².Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ»Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ Ð²ÑÐ±Ð¾ÑÑ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¸ Ð´Ð»Ñ Ð³ÑÐ°Ð½Ð°ÑÐ¾Ð², Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð´ÐµÑÐµÐºÑÐ¾ÑÐ¾Ð² Ð² ÐÐ¢ Ð¸ ÐÐ­Ð¢. ÐÐ»Ñ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÑÐ¸Ð½ÑÐ¸Ð»Ð»ÑÑÐ¾ÑÐ° ÐºÐµÑÐ°Ð¼Ð¸ÐºÐ¸ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼Ð¾ Ð¾ÑÐ¶Ð¸Ð³Ð°ÑÑ Ð² Ð¾ÐºÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ Ð°ÑÐ¼Ð¾ÑÑÐµÑÐµ Ð¸ ÑÐ¼ÐµÐ½ÑÑÐ°ÑÑ ÑÐ»ÐµÐ´Ð¾Ð²ÑÑ Ð¿ÑÐ¸Ð¼ÐµÑÑ Cr.
description: The given work is devoted to studying the effect of annealing and various impurities on the afterglow and thermostimulated luminescence of scintillators based on garnets activated by Ce and Pr. The research set the following goals: 1. A study of the literature on physical processes in scintillators and scintillation ceramics of multicomponent garnets. 2. Conducting experiments to study the scintillation characteristics of garnets activated by Ce3+ and Pr3+. 3. Determination of the effect of annealing in various atmospheres and the concentration of cerium on the afterglow of ceramics.4. Clarificationof the role of the Cr ion in the thermostimulated luminescence of YAG: Pr.5. Development of recommendations for choosing the optimal composition for grenades used as detectors in CT and PET.The work was carried out at the Department of Experimental Physics at Peter the Great St. Petersburg Polytechnic University, in the laboratory of scintillator physics. Measurements were made that clearly demonstrate how annealing in various atmospheres affects the concentration of effective Ce4+luminescent centers. It was also shown how different concentrations of Cr impurities in YAG: Pr powders affect the scintillation characteristics of the studied samples.As a result, recommendations were developed for choosing the optimal composition for garnets used as detectors in CT and PET.To increase the efficiency of the ceramic scintillator, it is necessary to anneal in an oxidizing atmosphere and reduce the trace admixture of Cr.