مرکز منطقه ای اطلاع رساني علوم و فناوري - Effect of <formula formulatype="inline"> <img src="/images/tex/20694.gif" alt="{\\rm Ca}^{2+}{\\rm Co}"> </formula>-Doping on the Temperature Dependence of <formula formulatype="inline"> <img src="/images/tex/20695.gif" alt="{\\rm Gd}_{2}{\\rm SiO}

Title :

Effect of ${\\rm Ca}^{2+}{\\rm Co}$ -Doping on the Temperature Dependence of ${\\rm Gd}_{2}{\\rm SiO}_{5}:{\</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Tyagi, Mohit ; Koschan, Merry ; Rothfuss, H.E. ; Hayward, Jason ; Melcher, Charles L.</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Author_Institution : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Dept. of Mater. Sci. & Eng., Univ. of Tennessee, Knoxville, TN, USA</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Volume : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>60</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Issue : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>2</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fYear : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>2013</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>fDate : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>Apr-13</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Firstpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>973</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Lastpage : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>978</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Abstract : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>The temperature dependence of the photoluminescence properties of Gd<sub>2</sub>SiO<sub>5</sub>:Ce,Ca crystals was found to be significantly affected by Ca codoping and shows that presence of additional energy levels in these crystals provides nonradiative energy transfer. The excitation and emission bands also broaden with codoping due to presence of these additional energy levels. Therefore Ca codoping in Gd<sub>2</sub>SiO<sub>5</sub> crystals decreases the scintillation decay very strongly and has a strong adverse affect on scintillation light yield, different from the effect in other members of the oxyorthosilicate family such as Lu<sub>2</sub>SiO<sub>5</sub> and Y<sub>2</sub>SiO<sub>5</sub>.</div> </div> <div class='row'> <div class='leftDiv labelDiv col-xs-4 col-sm-2 fullRecLabelEnglish'>Keywords : </div><div class='valueDiv leftDirection leftAlign col-xs-8 col-sm-10 fullRecValueEnglish'>X-ray detection; calcium; doping; gadolinium compounds; gamma-ray detection; photoluminescence; solid scintillation detectors; Ca codoping; Gd<sub>2</sub>SiO<sub>5</sub>:Ce,Ca; X-ray detector; additional energy levels; emission bands; excitation bands; gamma radiation detector; nonradiative energy transfer; oxyorthosilicate family; photoluminescence properties; scintillation decay; scintillation light yield; temperature dependence; Absorption; Calcium; Crystals; Energy exchange; Energy states; Ions; Temperature dependence; <formula formulatype=$ ${rm Gd}_{2}{rm SiO}_{5}$ (GSO); Calcium; cerium; co-doping; photoluminescence;