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Abstract

In this work, the Ce3+ doped gadolinium-calcium-silicaborate glass scintillators of the composition ratio 25Gd2O3:10CaO:10SiO2:(55−x)B2O3:xCeF3, have been fabricated by using the melt-quenching technique. The doping concentration of the Ce3+ was varied from 0.05 mol% to 2.5 mol%. The 4f-5d transition of the Ce3+ allowed scintillation with a fast decay time. The absorption spectrum, X-ray induced emission spectrum, photo luminescence spectrum, laser luminescence spectrum and decay time of the scintillators were measured for studying the luminescence properties. From the X-ray induced emission spectrum result, we checked the trend between doping concentration and light yield. The laser induced luminescence spectrum was measured while changing the temperature from 300 K to 10 K. We also measured the decay time by using the laser excitation of the 0.15 mol% Ce3+ doped glass scintillator.

Highlights

•Ce3+ doped gadolinium-calcium-silicaborate glass scintillators were developed.

•Glass is easily fabricated with large sizes and various doping materials.

•The luminescence properties are studied by using various radiation sources.

•The light yield and decay time were measured at low temperature.

•One decay time component is found.

Author information​​

J.M. Parka, D.H. Haa, S. Kaewjeangb, U. Maghanemib, S. Kothanb, J. Kaewkhaoc, H.J. Kima, , 

a Department of Physics, Kyungpook National University, Daegu, 702-701, Republic of Korea

b Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand

c Center of Excellence in Glass Technology and Material Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand