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Ikram, M.A. (author), Van der Lugt, A. (author), Niessen, W.J. (author), Koudstaal, P.J. (author), Krestin, G.P. (author), Hofman, A. (author), Bos, D. (author), Vernooij, M.W. (author)
Imaging plays an essential role in research on neurological diseases in the elderly. The Rotterdam Scan Study was initiated as part of the ongoing Rotterdam Study with the aim to elucidate the causes of neurological disease by performing imaging of the brain in a prospective population-based setting. Initially, in 1995 and 1999, random...
journal article 2015
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Van den Eeckhout, K. (author), Bos, A.J.J. (author), Poelman, D. (author), Smet, P.F. (author)
Persistent luminescence or afterglow is caused by a gradual release of charge carriers from trapping centers. The energy needed to release these charge carriers is determined by the trap depths. Knowledge of these trap depths is therefore crucial in the understanding of the persistent luminescence mechanism. Unfortunately, the trap depths in...
journal article 2013
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You, F. (author), Bos, A.J.J. (author), Shi, Q. (author), Huang, S. (author), Dorenbos, P. (author)
The thermoluminescence properties of Y3Al5O12 (YAG) doped with an electron donor lanthanide (Ce3+, Pr3+, or Tb3+) together with an electron acceptor lanthanide (Yb3+ or Eu3+) were studied with the aim to locate the energy levels of each divalent and each trivalent lanthanide within the band gap. The activation energies needed to liberate...
journal article 2012
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Botterman, J. (author), Van den Eeckhout, K. (author), Bos, A.J.J. (author), Dorenbos, P. (author), Smet, P.F. (author)
In this work we study the persistent luminescence properties of europium-doped alkaline earth silicon oxynitrides (CaSi2O2N2, SrSi2O2N2 and BaSi2O2N2). All compounds show afterglow emission, with an emission spectrum which is similar to the steady state photoluminescence. The afterglow decay time for BaSi2O2N2:Eu and SrSi2O2N2:Eu is about 50 and...
journal article 2012
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Van Geel, B. (author), Bos, J.A.A. (author), Van Huissteden, J. (author), Pals, J.P. (author), Schatz, H. (author), Van Mourik, J.M. (author), Van Reenen, G.B.A. (author), Wallinga, J. (author), Van der Plicht, J. (author)
Botanical microfossils, macroremains and oribatid mites of a Weichselian interstadial deposit in the central Netherlands point to a temporary, sub-arctic wetland in a treeless landscape. Radiocarbon dates and OSL dates show an age between ca. 54.6 and 46.6 ka cal BP. The vegetation succession, starting as a peat-forming wetland that developed...
journal article 2010
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Dorenbos, P. (author), Bos, A.J.J. (author), Poolton, N.R.J. (author)
We studied charge carrier trapping, detrapping, and recombination phenomena in Ce3+ doped YPO4, codoped with Sm3+, Dy3+, or Tm3+. Ce ions trap the holes and Sm, Dy, and Tm trap electrons created during x-ray irradiation. By means of red to infrared stimulation, the trapped electrons can be back transferred to Ce leading to shorter wavelength Ce3...
journal article 2010
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Poolton, N.R.J. (author), Kars, R.H. (author), Wallinga, J. (author), Bos, A.J.J. (author)
The significance and extent of band-tail states in the luminescence and dosimetry properties of natural aluminosilicates (feldspars) is investigated by means of studies using low temperature (10 K) irradiation and optically stimulated luminescence (OSL) stimulation spectroscopy, and thermoluminescence (TL) in the range 10–200 K, made in...
journal article 2009
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Krumpel, A.H. (author), Bos, A.J.J. (author), Bessière, A. (author), Van der Kolk, E. (author), Dorenbos, P. (author)
A detailed and systematic electron trapping study was conducted in the scientifically important wide band-gap materials LuPO4 and YPO4 doubly doped with Ce3+ and Ln3+ (Ln=Sm, Dy, Ho, Er, Tm). By using vacuum-ultraviolet luminescence spectroscopy and detailed thermoluminescence spectroscopy it was possible to establish by two independent methods...
journal article 2009
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Bos, A.J.J. (author), Wallinga, J. (author)
We present mathematical descriptions of optically stimulated luminescence (OSL) signals under linearly, hyperbolically, exponentially, and reciprocally increasing stimulation intensity for a one-trap one-recombination-center model assuming charge transfer governed by first-order kinetics. Depending on the stimulation mode, the OSL signal can be...
journal article 2009
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Drozdowski, W. (author), Dorenbos, P. (author), Drozdowska, R. (author), Bos, A.J.J. (author), Poolton, N.R.J. (author), Tonelli, M. (author), Alshourbagy, M. (author)
In this paper we present the studies performed on a set of Lu3Al5O12:Pr (LuAG:Pr) crystals with praseodymium concentration between 1.5 and 10%, grown by the micro-pulling-down (muPD) technique. The research comprises the measurements of X-ray excited emission spectra and 137Cs gamma-ray pulse height spectra in a range from 78 to 600 K, and...
journal article 2009
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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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Drozdowski, W. (author), Dorenbos, P. (author), Bos, A.J.J. (author), Bizarri, G. (author), Owens, A. (author), Quaranti, F.G.A. (author)
CeBr3 crystals have been studied to assess their utility as potential gamma ray spectrometers for future ESA planetary missions. Pulse height spectra, scintillation time profiles, X-ray excited emission spectra, and photoluminescence spectra have been recorded as a function of temperature between 78 and 600 K. In addition, the influence of...
journal article 2008
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Bos, W.M. (author)
Corrosion of metals has an enormous economic impact. Fortunately, the rate at which corrosion processes take place can be reduced, often to a point where, at least temporarily, corrosion is virtually non-existent. One of these, corrosion-control methods is barrier protection. The concept of barrier rotection is to separate the metal substrate...
doctoral thesis 2008
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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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Bos, J.W.G. (author), Zandbergen, H.W. (author), Lee, M.H. (author), Ong, N.P. (author), Cava, R.J. (author)
journal article 2007
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Bos, R. (author)
doctoral thesis 2006
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Bos, J.W.G. (author), Lee, M. (author), Morosan, E. (author), Zandbergen, H.W. (author), Lee, W.L. (author), Ong, N.P. (author), Cava, R.J. (author)
Ferromagnetism is observed below 10 K in [Bi0.75Te0.125Mn0.125]Te. This material has the BiTe structure, which is made from the stacking of two Te-Bi-Te-Bi-Te blocks and one Bi-Bi block per unit cell. Crystal structure analysis shows that Mn is localized in the Bi2 blocks, and is accompanied by an equal amount of TeBi antisite occupancy in the...
journal article 2006
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Appleby, G.A. (author), Edgar, A. (author), Williams, G.V.M. (author), Bos, A.J.J. (author)
A glass-ceramic thermal neutron imaging plate material is reported. The material consists of a neutron sensitive 2B2O3–Li2O glass matrix containing nanocrystallites of the storage phosphor BaCl2:Eu2+. When doped with 0.5?mol?% Eu2+, the neutron induced photostimulated luminescence (PSL) conversion efficiency of the 10B enriched glass-ceramic is...
journal article 2006
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Broersen, P.M.T. (author), Bos, R. (author)
journal article 2006
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Viciu, L. (author), Bos, J.W.G. (author), Zandbergen, H.W. (author), Huang, Q. (author), Foo, M.L. (author), Ishiwata, S. (author), Ramirez, A.P. (author), Lee, M. (author), Ong, N.P. (author), Cava, R.J. (author)
journal article 2006
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