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Scintillation properties and anomalous Ce3+ emission of Cs2NaREBr6:Ce3+ (RE = La,Y,Lu)

Birowosuto, M.D. (author), Dorenbos, P. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)

journal article 2006

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High-light-output scintillator for photodiode readout: LuI3:Ce3+

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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Anomalous 10-ns emission in Ce3+-doped Cs3LuCl6

Dorenbos, P. (author), Van Loef, E.V.D. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)

journal article 2003

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Lanthanide 4f-level location in lanthanide doped and cerium-lanthanide codoped NaLaF4 by photo- and thermoluminescence

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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Ce3+ activated LaBr3?xIx: High-light-yield and fast-response mixed halide scintillators

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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Improvement of LaBr3:5%Ce scintillation properties by Li1, Na1, Mg21, Ca21, Sr21, and Ba21 co-doping

Alekhin, M.S. (author), Biner, D.A. (author), Krämer, K.W. (author), Dorenbos, P. (author)

This paper reports on the effects of Liþ, Naþ, Mg2þ, Ca2þ, Sr2þ, and Ba2þ co-doping on the scintillation properties of LaBr3:5%Ce3þ. Pulse-height spectra of various gamma and X-ray sources with energies from 8 keV to 1.33 MeV were measured from which the values of light yield and energy resolution were derived. Sr2þ and Ca2þ co-doped crystals...

journal article 2013

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Li-Based Thermal Neutron Scintillator Research: Rb2LiYBr6 : Ce3+ and Other Elpasolites

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)

journal article 2008

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Influence of the anion on the spectroscopy and scintillation mechanism in pure and Ce3+-doped K2LaX5 and LaX3 (X=Cl, Br, I)

van Loef, E.V.D. (author), Dorenbos, P. (author), van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)

journal article 2003

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Improvement of ?-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping

Alekhin, M.S. (author), De Haas, J.T.M. (author), Khodyuk, I.V. (author), Krämer, K.W. (author), Menge, P.R. (author), Ouspenski, V. (author), Dorenbos, P. (author)

Commercially available LaBr3:5% Ce3+ scintillators show with photomultiplier tube readout about 2.7% energy resolution for the detection of 662?keV ?-rays. Here we will show that by co-doping LaBr3:Ce3+ with Sr2+ or Ca2+ the resolution is improved to 2.0%. Such an improvement is attributed to a strong reduction of the scintillation light losses...

journal article 2013

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High-resolution luminescence spectroscopy study of down-conversion routes in NaGdF4:Nd3+ and NaGdF4:Tm3+ using synchrotron radiation

Van der Kolk, E. (author), Dorenbos, P. (author), Krämer, K. (author), Biner, D. (author), Güdel, H.U. (author)

journal article 2008

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Thermal quenching of Ce3+ emission in PrX3 (X = Cl, Br) by intervalence charge transfer

Birowosuto, M.D. (author), Dorenbos, P. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)

journal article 2007

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Thermal-neutron scintillator: Ce3+ activated Rb2LiYBr6

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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Temperature Dependent Scintillation and Luminescence Characteristics of GdI3: Ce³+

Birowosuto, M.D. (author), Dorenbos, P. (author), Bizarri, G. (author), Van Eijk, C.W.E. (author), Krämer, K.W. (author), Güdel, H.U. (author)

journal article 2008

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Photoluminescence and excited states dynamics of Tm²⁺-doped CsCa(Cl/Br)₃ and CsCa(Br/I)₃ perovskites

Plokker, M.P. (author), Biner, D. A. (author), Dusoswa, N. (author), Dorenbos, P. (author), Krämer, K. W. (author), van der Kolk, E. (author)

In this study, we systematically vary the Cl/Br and Br/I ratios in CsCaX₃:Tm²⁺ (X = Cl, Br, I) and hereby gradually shift the positions of the Tm²⁺ 4f¹²5d¹-levels as relative to the two 4f¹³ levels. At low temperatures up to five distinct Tm²⁺ 4f¹²5d<sup>1...

journal article 2021

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Scintillation and Optical Characterization of CsCu₂I₃ Single Crystals from 10 to 400 K

van Blaaderen, J.J. (author), van den Brekel, Liselotte A. (author), Krämer, Karl W. (author), Dorenbos, P. (author)

Currently only Eu²⁺-based scintillators have approached the light yield needed to improve the 2% energy resolution at 662 keV of LaBr₃:Ce³⁺,Sr²⁺. Their major limitation, however, is the significant self-absorption due to Eu²⁺. CsCu₂I₃ is an interesting new small band...

journal article 2023

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Engineering near-infrared emitting scintillators with efficient Eu²⁺ → Sm²⁺ energy transfer

Wolszczak, W.W. (author), Krämer, K. W. (author), Dorenbos, P. (author)

Recently, we proposed a concept for a new class of near infrared (NIR) scintillators by employing efficient Eu²⁺ → Sm²⁺ energy transfer. In this article we investigate the optical spectroscopy of Sm²⁺ in BaBrI, CsSrI₃, and CsBa₂I₅ halide hosts. A criterion was derived for fast...

journal article 2020

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Converting SrI ₂ :Eu ²⁺ into a near infrared scintillator by Sm ²⁺ co-doping

Awater, R.H.P. (author), Alekhin, M. (author), Biner, D. A. (author), Krämer, K.M.B. (author), Dorenbos, P. (author)

The luminescence and scintillation properties of SrI ₂ single crystals doped with 5% Eu ²⁺ and 0.05%, 0.2% and 0.5% Sm ²⁺ are evaluated. X-ray excited and photoluminescence measurements show energy transfer from excited Eu ²⁺ ions to Sm ²⁺ ions. At a concentration of 0.5% Sm <sup>2+</sup...

journal article 2019

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Light yield and thermal quenching of Ce³⁺ and Pr³⁺ co-doped LaBr₃:Sm²⁺ near-infrared scintillators

van Aarle, C. (author), Roturier, Nils (author), Biner, Daniel A. (author), Krämer, Karl W. (author), Dorenbos, P. (author)

LaBr₃:Ce³⁺ is a compound with excellent scintillation properties, but its ultraviolet emission does not match well with the detection efficiency curves of silicon based photodetectors. In this work, Sm²⁺ is studied as an activator for LaBr₃ as its near-infrared emission can be detected with close to...

journal article 2023

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The role of Yb²⁺ as a scintillation sensitiser in the near-infrared scintillator CsBa₂I₅:Sm²⁺

van Aarle, C. (author), Krämer, Karl W. (author), Dorenbos, P. (author)

The feasiblity of using Yb²⁺ as a scintillation sensitiser for CsBa₂I₅:Sm²⁺ near-infrared scintillators has been assessed. CsBa₂I₅ samples with concentrations ranging from 0.3% to 2% Yb²⁺ and 0–1% Sm²⁺ have been studied. The scintillation properties have...

journal article 2021

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Characterisation of Sm²⁺-doped CsYbBr₃, CsYbI₃ and YbCl₂ for near-infrared scintillator application

van Aarle, C. (author), Krämer, Karl W. (author), Dorenbos, P. (author)

Fast energy transfer from Yb²⁺ to Sm²⁺ is a requirement when using Yb²⁺ as a sensitiser for Sm²⁺ emission for near-infrared scintillator applications. This cannot be achieved through dipole-dipole interactions due to the spin-forbidden nature of the involved Yb²⁺ transition, making the...

journal article 2022