Searched for: department%3A%22Radiation%252C%255C%252BRadionuclides%255C%252Band%255C%252BReactors%22
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Ding, X. (author), Liang, H. (author), Hou, D. (author), Su, Q. (author), Dorenbos, P. (author), Sun, S. (author), Tao, Y. (author)
Ce3+-doped Ba3MgSi2O8 phosphors were prepared by a solid-state reaction route. The photoluminescence properties in the vacuum ultraviolet-vis spectral range and the x ray excited radioluminescence were investigated. Ce3+ ions were found to enter three different sites in the host lattice. Five excitation bands and two emission bands of Ce(1)3+...
journal article 2011
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Hou, D. (author), Han, B. (author), Chen, W. (author), Liang, H. (author), Su, Q. (author), Dorenbos, P. (author), Huang, Y. (author), Gao, Z. (author), Tao, Y. (author)
A series of Ce3+ doped ?-Sr2?2xCexNaxP2O7 phosphor compounds has been prepared using a high-temperature solid-state reaction technique. The luminescence properties under vacuum ultraviolet-UV and x-ray excitation were studied. Luminescence spectra reveal three UV-emitting peaks at about 310, 330, and 350 nm from which we conclude that Ce3+...
journal article 2010
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Krumpel, A.H. (author), Van der Kolk, E. (author), Zeelenberg, D. (author), Bos, A.J.J. (author), Krämer, K.W. (author), Dorenbos, P. (author)
Photo- and thermoluminescence (TL) spectra of NaLaF4:Ln3+ (Ln = Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm) and NaLaF4:Ce3+, Ln3+ (Ln = Nd,Sm,Ho,Er,Tm) are presented and used together with the empirical Dorenbos model in order to establish the 4f energy level positions of all tri- and divalent lanthanide ions doped in NaLaF4. The information will be...
journal article 2008
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Birowosuto, M.D. (author), Dorenbos, P. (author), Krämer, K.W. (author), Güdel, H.U. (author)
Here, we report the scintillation properties of LaBr3?xIx:5%Ce3+ with four different compositions of x, i.e., x = 0.75, 1.5, 2, and 2.25. Radioluminescence spectra reveal a shift of the emission wavelength with the LaBr3 to LaI3 ratio. LaBr1.5I1.5:5%Ce3+ shows the highest scintillation light yield of 58?000?photons/MeV, whereas LaBr0.75I2.25:5...
journal article 2008
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Selling, J. (author), Schweizer, S. (author), Birowosuto, M.D. (author), Dorenbos, P. (author)
Single crystals of Ce-activated BaCl2, BaBr2, and BaI2 were investigated under x-ray and ?-ray excitation. The Ce3+-related x-ray excited luminescence in BaBr2 shifts significantly to longer wavelengths upon increasing the doping level from 0.1% to 1%. In Ce-activated BaCl2 only a slight shift can be observed. BaI2 does not show any Ce3+-related...
journal article 2007
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Han, B. (author), Liang, H. (author), Lin, H. (author), Zhong, J. (author), Su, Q. (author), Dorenbos, P. (author), Birowosuto, M.D. (author), Zhang, G. (author), Fu, Y. (author)
The phosphors Ba3Gd(BO3)3:Ce3+ were prepared by a solid-state reaction technique at high temperature. The vacuum ultraviolet-ultraviolet and visible spectroscopic properties of the phosphors together with decay time curves are investigated and discussed. The spectroscopic properties are explained by occupancy of Ce3+ at two different Gd sites in...
journal article 2007
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Van der Kolk, E. (author), De Haas, J.T.M. (author), Bos, A.J.J. (author), Van Eijk, C.W.E. (author), Dorenbos, P. (author)
A combined photoconductivity, absorption, and thermoluminescence study was performed to understand the absence of luminescence from Ce3+ in LaAlO3:Ce3+. It is demonstrated that the absence of luminescence is the result of Ce3+ ionization from the 5d excited states, which are all located in the conduction band. Ce3+ ionization is accompanied by...
journal article 2007
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Birowosuto, M.D. (author), Dorenbos, P. (author), De Haas, J.T.M. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)
Scintillation and luminescence characteristics of Rb2LiYBr6 doped with 0.1%, 0.5%, 1%, and 5%?Ce3+ are presented. Under optical and x-ray excitation, Ce3+ doublet emission is observed at 385 and 420 nm. Rb2LiYBr6:0.5%?Ce3+ shows very high thermal neutron scintillation light output of 83?000 photons/neutron. An excellent neutron peak resolution...
journal article 2007
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Birowosuto, M.D. (author), Dorenbos, P. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)
In this paper, we investigated the scintillation properties of LuI3:Ce3+. Radioluminescence, light output, energy resolution, and ?-scintillation decay are reported. We find an extremely high light output of 98?000±10?000?photons/MeV. LuI3:Ce3+ also gives a very high electron-hole (e-h) pair response when it is coupled with an avalanche...
journal article 2006
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Van der Kolk, E. (author), Basun, S.A. (author), Imbusch, G.F. (author), Yen, W.M. (author)
Electron delocalization processes of optically excited states of Ce3+ impurities in Lu2SiO5 were investigated by means of a temperature and spectrally resolved photoconductivity study. By monitoring separately the strength of the photocurrent resulting from excitation into each of the Ce3+?5d absorption bands, over a broad temperature region,...
journal article 2003
Searched for: department%3A%22Radiation%252C%255C%252BRadionuclides%255C%252Band%255C%252BReactors%22
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