Luminescence characteristics of Cs₂BaCl₄

Abstract

Fast scintillation material based on the ternary halide crystal of Cs 2 BaCl 4 was synthesized. Under X-ray excitation, bands ascribed to STEs and AFL were observed. Cs 2 BaCl 4 had a low scintillation decay time constant of 1.2 ns, whose proportion was approximately 70% of the total scintillation amount. The light yield of Cs 2 BaCl 4 was estimated through measuring the gamma-ray-excited pulse height spectra. Cs 2 BaCl 4 had a total light yield of 2400 photons/MeV. Considering the proportion of the fast component was 70% of the total scintillation amount, the fast component light yield was approximately 1700 photons/MeV, which is larger than that of BaF 2 .

Advanced Halide Scintillators: From the Bulk to Nano

“…The redshift of CL emission can be achieved by exploring cesium-based fluorides and chlorides. In the last decade, the research was focused on chloride materials, such as CsBCl 3 (B ═ Mg, Ca, Sr), [252][253][254][255] Cs 2 BaCl 4 , [255,256] Cs 2 ZnCl 4 , [257] and Cs 3 ZnCl 5 . [257] Preliminary measurements of time resolution of CsCaCl 3 reported CTR of 148 ps [255] with the potential to surpass BaF 2 .…”

Photoluminescence and scintillation characteristics of Bi-loaded PVK-based plastic scintillators for the high counting-rate measurement of high-energy X-rays

“…On the other hand, the light yield of scintillators employing materials that exhibit Auger-free luminescence of 500-1400 photons per MeV (ref. [11][12][13] is lower than those of other inorganic scintillators, and results in the low energy resolution of high-energy photons. In addition, a long scintillation decay time of 630 ns observed for inorganic scintillators based on BaF 2 is due to the large proportion of excitons that become self-trapped in BaF 2 .…”

“…Examples of reported inorganic scintillators that achieve rapid detection and demonstrate high detection efficiency are based on Ce-or Pr-doped single crystals [7][8][9][10] or materials that exhibit Auger-free luminescence. [11][12][13] Although these scintillators demonstrate fast scintillation decay, their performance in terms of the fast detection of high-energy photons is limited. The Ce or Pr luminescence centers employed in Ce-and Prdoped single crystal scintillators, respectively, produce scintillation decay times of several tens of nanoseconds.…”

Efficient emission in copper-doped Cs3ZnX5 (X = Cl, I) for white LEDs and X-ray scintillators

“…12–15 Among the lead-free halides, Zn halides are little studied, which may be due to their relative limit on efficiency compared with other lead-free halides. 16–18…”