Hydrothermal synthesis and characterization of nano Gd2O3(Eu) scintillator for high resolution X-ray imaging application

Author(s):  
P. Muralidhran ◽  
Seung Jun Lee ◽  
Bo Kyung Cha ◽  
Jong Yul Kim ◽  
Chan Kyu Kim ◽  
...  
2012 ◽  
Vol 7 (03) ◽  
pp. C03048-C03048 ◽  
Author(s):  
B K Cha ◽  
S -M Yong ◽  
S J Lee ◽  
D K Kim ◽  
J H Bae ◽  
...  

2005 ◽  
Vol 20 (9) ◽  
pp. 2510-2515 ◽  
Author(s):  
Z.T. Kang ◽  
H. Menkara ◽  
B.K. Wagner ◽  
C.J. Summers ◽  
V. Valdna

The synthesis of efficient ZnTe powder phosphors is very difficult due to its high moisture sensitivity and chemical instability during processing. In this study, an efficient ZnTe:O powder phosphor for x-ray imaging application was successfully synthesized by vacuum firing ZnTe powder prepared from ZnTe bulk crystals ball-milled in an O2 atmosphere. The phosphors were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, photoluminescence, and cathodoluminescence (CL) measurements and found to exhibit a luminescent efficiency three times that of ZnTe:O prepared by ZnO doping. The ZnTe:O samples exhibited a deep red emission centered at 680 nm and a CL decay time of 1.1μs.


2016 ◽  
Vol 27 (20) ◽  
pp. 205203 ◽  
Author(s):  
Gyuhyon Lee ◽  
Christian Struebing ◽  
Brent Wagner ◽  
Christopher Summers ◽  
Yong Ding ◽  
...  

2013 ◽  
Vol 1576 ◽  
Author(s):  
Jacob Castilow ◽  
Timothy W Zens ◽  
J. Matthew Mann ◽  
Joseph W. Kolis ◽  
Colin D. McMillen ◽  
...  

ABSTRACTHydrothermal synthesis of ThO2, UxTh1-xO2, and UOx at temperatures between 670°C and 700°C has been demonstrated. Synthesis at these temperatures is 50-80°C below prior growth studies and represents a new lower bound of successful growth. ThO2 single crystals of dimensions 6.49mm x 4.89mm x 3.89 mm and weighing 0.633g have been synthesized at average growth rates near 0.125mm/week. Single crystal UxTh1-xO2 crystals with mole fractions up to x≈0.30 have also been grown. The largest alloyed crystal with mole fraction x≈0.23 has dimensions of 2.97mm x 3.23mm x ∼3mm and recorded average growth rates near 0.2mm/week. Four structures were solved from X-ray diffraction data and their crystallographic data reported here. Rocking curve analysis determined a dislocation density of 1.2×109 cm-2.


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