Growth and characterization of Ce-doped Ca3(BO3)2 crystals for neutron scintillator

Fujimoto, Yutaka; Yanagida, Takayuki; Tanaka, Hidehiko; Yokota, Yuui; Kawaguti, Noriaki; Fukuda, Kentaro; Totsuka, Daisuke; Watanabe, K.; Yamazaki, Atsushi; Yoshikawa, Akira

doi:10.1016/j.jcrysgro.2010.10.189

Cited by 24 publications

(15 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6,7 In the previous study, we have developed crystalline scintillators based on calcium orthoborate Ca 3 (BO 3 ) 2 and strontium metaborate SrB 2 O 4 activated with Ce 3+ . 8,9 The crystals exhibited satisfactory characteristics which are high enough light yields to detect neutrons, fast response and low sensitivity for gamma-ray backgrounds and so on. Therefore, in this study, we focused attention on another material, the calcium metaborate CaB 2 O 4 It is composed of both alkaline-earth and boron similarly as the Ca 3 (BO 3 ) 2 and SrB 2 O 4 crystals.…”

Section: Introductionmentioning

confidence: 99%

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator

Fujimoto

Yanagida

Kawaguchi

et al. 2011

Crystal Growth & Design

Self Cite

View full text Add to dashboard Cite

Single crystals of undoped and 0.5% Ce 3+ -doped calcium metaborate CaB 2 O 4 have been grown successfully by micropulling down (μ-PD) technique. The material can find its application in the neutron detection. After the single-phase of CaB 2 O 4 was confirmed using X-ray diffraction analysis, optical and scintillation characteristics were investigated. In the transmittance spectra, Ce 3+ -doped crystals showed absorption bands around 270 and 320 nm which are ascribed to the transition from 4f ground state to 5d excited state of Ce 3+ . Under the 241 Am 5.5 MeV α-ray excitation, strong emission peak at 370 nm because of the Ce 3+ 5d−4f transition was observed for Ce 3+ -doped crystal, while the undoped crystal showed broad intrinsic emission band around 300− 400 nm which is caused by the lattice defects in the host crystal. The absolute light yield was calculated to be about 2200 photons per neutron under 252 Cf neutron irradiation.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator

Fujimoto

Yanagida

Kawaguchi

et al. 2011

Crystal Growth & Design

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although the total energy of charged particle resulted from the reaction between neutron and 10 B is less than that from the neutron- 6 Li reaction, neutron capture cross-section of 10 B is much higher than that of 6 Li, and abundance ratio of 10 B is larger than 6 Li. Thus B-bearing materials have also been developed as neutron scintillators [5][6][7]; however, the light yield of such materials were relatively small. LiCaBO 3 :Ce was reported as a blue phosphor [8] based on the 5d→4f transition of Ce 3+ substituted in the Ca 2+ site; however, it has not been studied as a scintillation material.…”

Section: Introductionmentioning

confidence: 99%

Preparation and scintillation properties of translucent LiCaBO 3 :Ce polycrystalline plates

et al. 2017

View full text Add to dashboard Cite

Translucent LiCaBO 3 :Ce thin plates were prepared by liquid phase sintering using LiBO 2 as a sintering aid, and their fluorescent and scintillation properties were investigated to examine the possibility to use as neutron scintillator. Since the initial part of the directionally solidified specimen contained a second phase of Ca 3 B 2 O 6 , LiCaBO 3 may melt incongruently, and simple melt growth of LiCaBO 3 :Ce is consequently difficult. Translucent thin plates 300 µm in thickness were successfully fabricated from LiCaBO 3 :Ce sintered compacts. Although strong fluorescence with the peak wavelength of 390 nm was observed in photoluminescence measurement, scintillation light yield and detection efficiency by α-particle irradiation were rather poor. The diffuse reflectance spectrum of LiCaBO 3 :Ce revealed existence of an absorption band other than Ce 3+ bands in the ultraviolet region. The band may corresponds to defect levels, which interrupt the energy transfer from the conduction band of the host to the 5d level of Ce 3+ resulting in the degradation of the scintillation performance.

show abstract

“…The best known boron containing compounds are borate crystals to be promising materials as non-linear optics, piezoelectric, scintillators, and phosphors [1,2]. On the other hand, the rare earth elements (REE) and their compounds are the common subject of the world like borates.…”

Section: Introductionmentioning

confidence: 99%

The Promising Synthetic Route Hydrothermal Synthesis of Non-Stoichiometric Cerium and Boron Containing Compounds and Characterization

Çelik

Kurtuluş

2014

Acta Phys. Pol. A

View full text Add to dashboard Cite

Cerium, the most abundant rare earth element, and boron containing mineral (lithium tetraborate pentahydrate) were used for synthesizing rare earth borates. Alternatively, for preparing rare earth borates, hydrothermal technique can be used. The non-stoichiometric cerium and boron containing compounds were synthesized by hydrothermal method using cerium sulphate and lithium tetraborate pentahydrate in appropriate molar ratio. Characterizations were done by X-ray diraction, Fourier transform infrared spectroscopy, scanning electron microscopy/energy dispersive X-ray analysis, and thermogravimetric/dierential thermal analysis.

show abstract

Growth and characterization of Ce-doped Ca3(BO3)2 crystals for neutron scintillator

Cited by 24 publications

References 18 publications

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator

Preparation and scintillation properties of translucent LiCaBO 3 :Ce polycrystalline plates

The Promising Synthetic Route Hydrothermal Synthesis of Non-Stoichiometric Cerium and Boron Containing Compounds and Characterization

Contact Info

Product

Resources

About

Growth and characterization of Ce-doped Ca3(BO3)2 crystals for neutron scintillator

Cited by 24 publications

References 18 publications

Characterizations of Ce3+-Doped CaB2O4 Crystalline Scintillator

Characterizations of Ce3+-Doped CaB2O4 Crystalline Scintillator

Preparation and scintillation properties of translucent LiCaBO 3 :Ce polycrystalline plates

The Promising Synthetic Route Hydrothermal Synthesis of Non-Stoichiometric Cerium and Boron Containing Compounds and Characterization

Contact Info

Product

Resources

About

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator

Characterizations of Ce³⁺-Doped CaB₂O₄ Crystalline Scintillator