Source:Journal of Crystal Growth, Volume 445
Author(s): Sasmit S. Gokhale, Luis Stand, Adam Lindsey, Merry Koschan, Mariya Zhuravleva, Charles L. Melcher
The crystal growth of CsSrBr3: Eu with improved energy resolution for use in gamma-ray detection applications is reported. CsSrBr3 boules doped with 5% Eu were grown by the vertical Bridgman method in quartz ampoules of 17mm and 22mm diameter. It was observed that the addition of an excess of CsBr in the melt improved the optical transparency and energy resolution of the scintillator crystals. The energy resolution of the gamma-ray spectra recorded with crystals measuring ø 22mm×15mm was 7.4% at 662keV (for a crystal with non-optimized stoichiometry) and 6.2% at 662keV (for a crystal with optimized stoichiometry i.e. excess CsBr in the melt), which is a significant improvement over previous reports. Temperature dependent powder XRD measurements were also carried out to study the solid–solid phase transition which occurs as the crystals are cooled after growth.
from #Ἀθηνᾶ via ola Kala on Inoreader http://ift.tt/1VriRTz
via IFTTT
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου