Scintillation Properties of and Self Absorption in ${\rm SrI}_{2}\!:\!{\rm Eu}^{2+}$

Alekhin, Mikhail S.; Haas, J.T.M. de; Krämer, Karl; Dorenbos, P.

doi:10.1109/tns.2011.2163642

Cited by 79 publications

(48 citation statements)

References 16 publications

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“…Although at both temperatures the contribution of dominates, the difference between and at 600 K is significantly larger than that at 295 K. This observation agrees with poorer nPR at 600 K in Fig. 3, and it is probably related to higher self-absorption at 600 K [13].…”

Section: Discussionsupporting

confidence: 81%

“…First, we review some results from previous work [13] that are relevant for understanding of the nPR data on SrI :Eu . X-ray excited emission spectra of pure SrI and SrI :5%Eu are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Eu absorbs and re-emits its own emission with very high probability-a probability that increases with increase of sample size, Eu concentration, and temperature [13]. Sturm et al [17] demonstrated a fluctuation of the light yield depending on the position of the interaction of the -ray photon with the SrI :Eu crystal.…”

Section: Discussionmentioning

confidence: 99%

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Nonproportional Response and Energy Resolution of Pure SrI$_{2}$ and SrI$_{2}$:5%Eu Scintillators

Alekhin

Khodyuk

Haas

et al. 2012

IEEE Trans. Nucl. Sci.

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Abstract-Nonproportional response of the scintillation yield of un-doped SrI and SrI :5%Eu was studied using highly monochromatic synchrotron irradiation ranging from 10.5 to 100 keV. Measurements were performed at 80 K and 295 K for SrI , and at 80 K, 295 K, 450 K, and 600 K for SrI :5%Eu. By making a dense data sampling around the iodine K-edge and using the recently developed K-dip spectroscopy method, the K-shell photoelectron response curves were reconstructed down to 500 eV. Proportionalities of X-ray response and K-shell photoelectron response of both crystals reveal temperature dependence. Energy resolution of the X-ray photopeak was analyzed as a function of temperature and deposited energy. Energy resolution improves with better proportionality.

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Section: Discussionsupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

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Nonproportional Response and Energy Resolution of Pure SrI$_{2}$ and SrI$_{2}$:5%Eu Scintillators

Alekhin

Khodyuk

Haas

et al. 2012

IEEE Trans. Nucl. Sci.

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“…Disadvantages of these scintillators are high hygroscopic and price. In addition, SrI 2 -Eu has temperature instability of light output observed by Alekhin et al, 2011. For the most applications a cheaper NaI-Tl scintillator has quite properties (light output about 45000 photons/MeV cited in Derenzo, 2012). Therefore, one of the way in development of new scintillators is to find new materials with similar to NaITl properties but no hygroscopic.…”

Section: Introductionmentioning

confidence: 99%

Scintillation properties of pure and Ce3+-doped SrF2 crystals

Shendrik

Раджабов

Nepomnyashchikh

2013

Radiation Measurements

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In this paper results of scintillation properties measurements of pure and Ce 3+ -doped strontium fluoride crystals are presented. We measure light output, scintillation decay time profile and temperature stability of light output. X-ray excited luminescence outputs corrected for spectral response of monochromator and photomultiplier for pure SrF 2 and SrF 2 -0.3 mol.% Ce 3+ are approximately 95% and 115% of NaI-Tl emission output, respectively. A photopeak with a 10% full width at half maximum is observed at approximately 84% the light output of a NaI-Tl crystal after correction for spectral response of photomultiplier, when sample 10x10 mm of pure SrF 2 crystal is excited with 662 KeV photons. Corrected light output of SrF 2 -0.3 mol.% Ce 3+ under 662 KeV photon excitation is found at approximately 64% the light output of the NaI-Tl crystal.

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“…Alkaline earth metal iodides represent another outstanding family of fluorescent crystals. In this series, SrI 2 :Eu 2+ emits light in the Eu 2+ photoluminescence (PL) band (λ ¼ 435 nm, τ ¼ 1:2 μs [4,5]), shows the highest light output (over 120 photons/keV [6]), excellent energy resolution (2.6% at 662 keV [7]), and a high proportionality of light yield [8]. Many research works were devoted to optimize a composition and improve the energy transfer processes in strontium iodide crystals.…”

Section: Introductionmentioning

confidence: 99%