Search for new scintillators for x- and γ-ray detectors

Mishin, Alexander N.; Родный, П. А.; Sidorenko, A. V.; Voloshinovskii, А.; Dorenbos, P.

doi:10.1117/12.417622

Cited by 5 publications

(7 citation statements)

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“…The summation over the matrix element connecting an initial state |i with a final state |f via the dipole operator µ gives the oscillator strength [28]. The ratio of τ/λ 3 between the anomalous Ce 3+ emission and the ordinary Ce 3+ emission is close to unity; see column 5 in table 7. This means that the anomalous Ce 3+ emission is an electric dipole allowed transition.…”

Section: Anomalous Emissionmentioning

confidence: 87%

“…The slightly lower values than unity can be related with the difference between the oscillator strength of the anomalous and that of the ordinary Ce 3+ emissions. From equation (7), the faster decay time of anomalous emission in bromoelpasolites than in chloride compounds can be related to the larger refractive index in bromide than in chloride compounds.…”

Section: Scintillation Mechanismmentioning

confidence: 99%

“…So far, elpasolites have shown less attractive scintillation properties than the lanthanum trihalides. The light yield in LaBr 3 :Ce 3+ is 70 000 photons MeV −1 , whereas that in Cs 2 LiYBr 6 :Ce 3+ is 25 000 photons MeV −1 [6,7]. The question why elpasolites show a lower light yield has remained open, due to lack of in-depth knowledge about the scintillation mechanism.…”

Section: Introductionmentioning

confidence: 99%

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

Birowosuto

Dorenbos

Eijk

et al. 2006

J. Phys.: Condens. Matter

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We report the optical and scintillation properties of the Ce 3+ -doped bromoelpasolites Cs 2 NaREBr 6 (RE = La, Y, Lu). The γ -ray scintillation light yield of these materials varies from 6000 to 17 000 photons per MeV absorbed γ -ray energy. At room temperature (RT), the γ -ray scintillation decay curves for all compounds show a fast component of 61 ns, whereas the intrinsic Ce 3+ decay time is 30 ns. The scintillation mechanism in elpasolites is addressed. In Cs 2 NaLuBr 6 :Ce 3+ and Cs 2 NaYBr 6 :Ce 3+ , we observe for the first time the so-called Ce 3+ anomalous emission in bromide compounds. This emission previously observed for chloride compounds is an ultrafast Ce 3+ emission with a selective excitation mechanism. The decay time of the anomalous emission at 10 K in bromide compounds (∼7.80 ns) is faster than that in chloride compounds (∼9.90 ns). Two bands of the anomalous emission are resolved for the first time. The mechanism behind this emission is discussed.

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Section: Anomalous Emissionmentioning

confidence: 87%

Section: Scintillation Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Birowosuto

Dorenbos

Eijk

et al. 2006

J. Phys.: Condens. Matter

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“…The recombination of the pair leads to STE luminescence. With respect to the bromo-elpasolites, a brief report on the scintillation properties of Ce 3+ -doped Cs 2 LiYBr 6 was published by Mishin et al [28].…”

Section: Scintillation Mechanisms In the Elpasolitesmentioning

confidence: 99%

Scintillation and spectroscopy of the pure and Ce³-doped elpasolites: Cs₂LiYX₆(X Cl, Br)

Loef

Dorenbos

Eijk

et al. 2002

J. Phys.: Condens. Matter

105

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The optical and scintillation properties of pure and Ce3+-doped Cs2LiYX6 (X = Cl, Br) are presented. X-ray-excited optical luminescence spectra, optical excitation and emission spectra, time-resolved excitation and emission spectra, scintillation pulse height spectra and scintillation decay time spectra of Ce3+-doped Cs2LiYX6 (X = Cl, Br) crystals measured from 10 to 300 K are presented. Factors influencing the scintillation mechanism and the presence of core–valence luminescence are discussed.

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“…Ce Con: Ce concentration; E. R.: energy resolution. For comparison, the NaI:Tl crystal is also included [8,29,[57][58][59][60][61][62][63][64][65][66][67][68].…”

Section: Other Elpasolitesmentioning

confidence: 99%

Recent Trends in Elpasolite Single Crystal Scintillators for Radiation Detection

et al. 2022

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Scintillation detection has attracted great interest in nuclear medicine, nuclear radiation detection, high-energy physics, and non-destructive inspection. The elpasolite crystals with Ce3+ dopants are promising for these endeavors due to their modest light yield and extremely good proportionality when excited by the gamma ray. Moreover, the 6Li and 35Cl isotopes in elpasolite crystals endow them with excellent neutron detection capability. These features allow not only a high energy resolution but also a high detection sensitivity. The elpasolite scintillators also enable the precisely dual detection of gamma/neutron signals through pulse height discrimination (PHD) or pulse shape discrimination (PSD). In this work, we review recent investigations on using the typical elpasolite scintillators, including Ce3+-doped Cs2LiYCl6 (CLYC), Cs2LiLaCl6 (CLLC), and Cs2LiLaBr6 (CLLB), for the monitoring of gamma rays and neutrons. The scintillation properties, detection mechanism, and elpasolite crystal structure are also discussed with the aim of improving high-energy ray detection ability.

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Search for new scintillators for x- and γ-ray detectors

Cited by 5 publications

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

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

Scintillation and spectroscopy of the pure and Ce³-doped elpasolites: Cs₂LiYX₆(X Cl, Br)

Recent Trends in Elpasolite Single Crystal Scintillators for Radiation Detection

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Search for new scintillators for x- and γ-ray detectors

Cited by 5 publications

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

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

Scintillation and spectroscopy of the pure and Ce3 -doped elpasolites: Cs2LiYX6(X Cl, Br)

Recent Trends in Elpasolite Single Crystal Scintillators for Radiation Detection

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

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

Scintillation and spectroscopy of the pure and Ce³-doped elpasolites: Cs₂LiYX₆(X Cl, Br)