Intrinsic scintillators: TlMgCl3 and TlCaI3

Hawrami, R.; Ariesanti, E.; Wei, Hua; Finkelstein, J.; Głodo, J.; Shah, K.S.

doi:10.1016/j.jcrysgro.2017.06.012

Cited by 27 publications

(12 citation statements)

References 12 publications

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“…In comparison to externally activated scintillators, intrinsic (self-activated) scintillators have the advantage of luminescent homogeneity, preventing them from performance degradation when scaling up the crystal size. In the past few years, several high-performance scintillators self-activated by Ce 3+ , Eu 2+ , and Tl + ions have been discovered, such as CeBr 3 , Cs 4 EuBr 6 , and TlMgCl 3 , which have light yields ranging from 30 000 to 78 000 photons/MeV and energy resolutions from 3.7% to 4.3% at 662 keV. Nonetheless, frequently, such self-activated scintillators may suffer from self-absorption due to the possible weak electron–phonon coupling associated with electronic transition.…”

Section: Introductionmentioning

confidence: 99%

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

Cheng

Beitlerová

Kučerková

et al. 2021

ACS Appl. Mater. Interfaces

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A novel all-inorganic CsCu2I3 single-crystalline perovskite as a nonhygroscopic and efficient X-ray and γ-ray scintillator is described herein. It is featured by a one-dimensional (1D) perovskite structure with an orthorhombic system and a space group of Cmcm. The CsCu2I3 crystal emits yellow light peaking at 570 nm originated from strongly localized 1D exciton emission. It appears self-absorption free because of the large Stokes shift of 1.54 eV. The photophysics process of the self-trapped exciton was studied using temperature dependent photoluminescene spectra and decay kinetics measurements. The CsCu2I3 crystal exhibits an extremely low afterglow level of 0.008% at 10 ms under X-ray excitation. Under 137Cs γ-ray irradiation, its light yield is 16 000 photons/MeV with an energy resolution of 7.8% at 662 keV.

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Section: Introductionmentioning

confidence: 99%

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

Cheng

Beitlerová

Kučerková

et al. 2021

ACS Appl. Mater. Interfaces

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“…Compositions with Tl on the A site exhibit the density up to 5.98 g cm À3 and Z eff up to 79. [199] Therefore, Tl 2 LaCl 5 , [9,70,[199][200][201][202] Tl 2 LaBr 5 , [199,202,203] Tl 2 GdCl 5 , [204,205] and Tl 2 GdBr 5 [70] were most extensively investigated. Best samples reported in the literature exhibit LY up to 82 000 ph MeV À1 [201] and ER down to 2.8% (at 662 keV 137 Cs).…”

Section: A 2 Lnxmentioning

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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“…As a result of the presence of thallium, TlMgCl 3 has a high effective atomic number, Z eff = 67 [calculation methodology (Derenzo & Choong, 2009) in the supporting information], and a moderate density, = 4.47 g cm À3 (determined in this work). A pair of initial crystal growths of TlMgCl 3 have been conducted to assess the scintillation properties: Fujimoto et al (2016) measured 46,000 ph MeV À1 light yield with 5% energy resolution at 662 keV, and Hawrami et al (2017) measured 30,600 ph MeV À1 light yield with 3.7% energy resolution at 662 keV.…”

Section: Chemical Contextmentioning

confidence: 99%

The crystal structure of TlMgCl₃ from 290 K to 725 K

et al. 2020

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The title compound, thallium magnesium trichloride, has been identified as a scintillator with both moderate gamma-stopping power and moderate light yield. Knowledge of its crystal structure is needed for further development. This work determines the crystal structure of TlMgCl3 to be hexagonal P63/mmc (No. 194) and isostructural with RbMgCl3, contrary to previously reported data. This structure was obtained by single-crystal X-ray diffraction and was further confirmed by neutron diffraction measurements. Extending neutron diffraction measurements to high temperature, the data show that TlMgCl3 maintains this crystal structure from 290 K up through 725 K, approaching the melting point of 770 K. Anisotropic thermal expansion coefficients increase over this temperature range, from 31 to 38 × 10−6 K−1 along the a axis and from 19 to 34 × 10−6 K−1 along the c axis.

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Intrinsic scintillators: TlMgCl3 and TlCaI3

Cited by 27 publications

References 12 publications

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

Advanced Halide Scintillators: From the Bulk to Nano

The crystal structure of TlMgCl₃ from 290 K to 725 K

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Intrinsic scintillators: TlMgCl3 and TlCaI3

Cited by 27 publications

References 12 publications

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu2I3 Perovskite Single Crystal for Radiation Detection

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu2I3 Perovskite Single Crystal for Radiation Detection

Advanced Halide Scintillators: From the Bulk to Nano

The crystal structure of TlMgCl3 from 290 K to 725 K

Contact Info

Product

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About

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

Non-Hygroscopic, Self-Absorption Free, and Efficient 1D CsCu₂I₃ Perovskite Single Crystal for Radiation Detection

The crystal structure of TlMgCl₃ from 290 K to 725 K