Analysis and comparison of the Core-to-Valence Luminescence mechanism in a large CLYC crystal under neutron and γ-ray irradiation through optical filtering selection of the scintillation light

Ferrulli, Francesca; Caresana, M.; Cova, Francesca; Gundacker, S.; Kratochwil, N.; Pots, Rosalinde; Silari, M.; Vedda, A.; Veronese, I.; Zorloni, Gabriele

doi:10.1016/j.sna.2021.113151

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…When gamma rays hit the CLYC crystal, their interaction produces scintillation pulses. Due to an effect called Core-to-Valence Luminescence (CVL), the pulse waveforms rise and decay rapidly [9,18]. However, if neutrons impinge the CLYC crystal, the CVL effect does not occur.…”

Section: Algorithms Of Pulse Shape Discriminationmentioning

confidence: 99%

“…With a density of 3.3 g/cm 3 , CLYC crystals emit light at a main emission wavelength of 390 nm that is well-matched to many commercial photomultiplier tubes (PMTs) [8]. The excellent neutron-gamma dual detection capability of CLYC crystals is due to the Core-to-Valence Luminescence(CVL), also known as Cross-Luminescence or Auger-Free Luminescence [9,10]. The CVL causes a difference in the decay times of neutrons and gamma rays when interacting with the CLYC crystal.…”

Section: Introductionmentioning

confidence: 99%

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A low-power neutron and gamma-ray detector for environmental radiation monitoring using CLYC scintillator

Zhao,

Huang,

Shan

et al. 2023

J. Inst.

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This paper describes a low-power neutron and gamma-ray detector based on a CLYC scintillator enriched with 96% 6Li for environmental radiation monitoring. The detector is designed in compliance with the IP66 standard having water and dust release capability. The power consumption of the detector is 3.5 W, and the operating temperature is from -15° to +40°. The energy response range for gamma rays is 40 keV to 3 MeV, while the energy resolution of the detector is 4.8% (662 keV). A standard figure of merit (FOM) is used to evaluate neutron-gamma discrimination, achieving a value of 3.42. The mixed neutron-gamma environment was simulated at the Back-n neutron beam of the China Spallation Neutron Source (CSNS). The test results show that the detector can detect the changes in the gamma dose and neutron count rates when the beam is turned on and off in real-time. The proposed detector is suitable for the application of long-term environmental radiation monitoring for nuclear facilities or buildings housing radioactive sources.

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Section: Algorithms Of Pulse Shape Discriminationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A low-power neutron and gamma-ray detector for environmental radiation monitoring using CLYC scintillator

Zhao,

Huang,

Shan

et al. 2023

J. Inst.

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show abstract

“…Cross-luminescence can also be exploited for α(n 0 ) and γ discrimination. [250] An ideal cross-luminescence scintillator should exhibit the emission redshifted compared with BaF 2 while keeping the fast scintillation kinetics and relatively high LY (%1400 ph MeV À1 for BaF 2 [251] ) without major slow components. The redshift of CL emission can be achieved by exploring cesium-based fluorides and chlorides.…”

Section: Cross-luminescence Scintillatorsmentioning

confidence: 99%

Advanced Halide Scintillators: From the Bulk to Nano

Vaněček

Děcká

Mihóková

et al. 2022

Advanced Photonics Research

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Halide scintillators have been playing a crucial role in the detection of ionizing radiation since the discovery of scintillation in NaI:Tl in 1948. The discovery of NaI:Tl motivated the research and development (R&D) of halide scintillators, resulting in the development of CsI:Tl, CsI:Na, CaF2:Eu, etc. Later, the R&D shifted toward oxide materials due to their high mechanical and chemical stability, good scintillation properties, and relative ease of bulk single‐crystal growth. However, the development in crystal growth technology allows for the growth of high‐quality single crystals of hygroscopic and mechanically fragile materials including SrI2 and LaBr3. Scintillators based on these materials exhibit excellent performance and push the limits of inorganic scintillators. These results motivate intense research of a large variety of halide‐based scintillators. Moreover, materials based on lead halide perovskites find applications in the fields of photovoltaics, solid‐state lighting, and lasers. The first studies show also the significant potential of lead halide perovskites as ultrafast scintillators in the form of nanocrystals. The purpose of this review is to summarize the R&D in the field of halide scintillators during the last decade and highlight perspectives for future development.

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Effects of Ce3+ substitution on the local structure of cerium and scintillation properties of CLLBC:Ce crystals

Tong

Wei

et al. 2022

Journal of Crystal Growth

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Analysis and comparison of the Core-to-Valence Luminescence mechanism in a large CLYC crystal under neutron and γ-ray irradiation through optical filtering selection of the scintillation light

Cited by 6 publications

References 28 publications

A low-power neutron and gamma-ray detector for environmental radiation monitoring using CLYC scintillator

A low-power neutron and gamma-ray detector for environmental radiation monitoring using CLYC scintillator

Advanced Halide Scintillators: From the Bulk to Nano

Effects of Ce3+ substitution on the local structure of cerium and scintillation properties of CLLBC:Ce crystals

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