Comparative Studies of CsI(Tl), LYSO and BGO Scintillators

Inorganic scintillators of CsI(Tl), LYSO and BGO crystals were characterized using photomultiplier tube R1306 PMT readout for gamma ray detection. The photoelectron yield, light yield and photofraction were measured at gamma energies in range 59.5 keV to 1332 keV. It is found that the photoelectron yield of LYSO is much better than that of CsI(Tl) and BGO crystals. CsI(Tl) crystal showed the high light yield of 63855.25 ph/MeV in this energy range, which is better than that of LYSO and BGO crystals. The photofraction for all crystals was determined and compared with the cross-section ratio for the photoelectric effect to the total one which calculated by WinXCom program.

Download Full-text

Light Yield Non-Proportionality and Energy Resolution of BGO and CsI(Tl) Scintillation Crystals

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.979.285 ◽

2014 ◽

Vol 979 ◽

pp. 285-288 ◽

Cited By ~ 1

Author(s):

Wuttichai Chaiphaksa ◽

Narongchai Boonyopakorn ◽

Jakrapong Kaewkhao ◽

Pruittipol Limkitjaroenporn

Keyword(s):

Cross Section ◽

Energy Resolution ◽

Gamma Ray ◽

Light Yield ◽

Photomultiplier Tube ◽

Cross Section Ratio ◽

Analysis Program ◽

Section Ratio ◽

Scintillation Crystals ◽

Inorganic Scintillators

This work was investigated on gamma ray scintillation response of inorganic scintillators. BGO and CsI(Tl) was carried out in the energies ranging from 59 keV to 1332 keV. The scintillation responses of the crystals were measured using photomultiplier tube (R1306 PMT) readout. The light yield non-proportionality and energy resolution were analyzed with Gamma Acquisition & Analysis program. The photofraction for both crystals was determined and compared with the cross-section ratio which calculated by WinXCom program.

Download Full-text

Comparative Studies of the Light Yield Non-Proportionality and Energy Resolution of CsI(Tl), LYSO and BGO Scintillation Crystals

Materials Science Forum ◽

10.4028/www.scientific.net/msf.872.266 ◽

2016 ◽

Vol 872 ◽

pp. 266-270

Author(s):

Pruittipol Limkitjaroenporn ◽

Narong Sangwaranatee ◽

Wuttichai Chaiphaksa ◽

Jakrapong Kaewkhao

Keyword(s):

Energy Resolution ◽

Comparative Studies ◽

Gamma Ray ◽

Light Yield ◽

Good Energy Resolution ◽

Intrinsic Resolution ◽

Scintillation Crystals ◽

Good Energy ◽

Better Than

This article, for comparison, the non-proportionality of light yield and energy resolution of BGO, LYSO and CsI(Tl) scintillators couple to the R1306 PMT readouts were investigated. At 662 keV from 137Cs source, the good energy resolution of 7.13% for CsI(Tl) superior than LYSO and BGO scintillators. The energy resolution on gamma-ray energy was also evaluated to expose the scintillator intrinsic resolution parameters. For non-proportionality of light yield, the study showed a light yield non-proportionality 0.35% of LYSO, the value is better than 4.82 % for CsI(Tl) and 1.53 % of BGO scintillators.

Download Full-text

Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Japanese Journal of Applied Physics ◽

10.7567/jjap.55.090301 ◽

2016 ◽

Vol 55 (9) ◽

pp. 090301 ◽

Cited By ~ 28

Author(s):

Yutaka Fujimoto ◽

Masanori Koshimizu ◽

Takayuki Yanagida ◽

Go Okada ◽

Keiichiro Saeki ◽

...

Keyword(s):

Atomic Number ◽

Magnesium Chloride ◽

Gamma Ray ◽

Effective Atomic Number ◽

Light Yield ◽

High Light ◽

X Ray ◽

High Light Yield

Download Full-text

High light yield Ce3+-doped dense scintillating glasses

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2013.07.181 ◽

2013 ◽

Vol 581 ◽

pp. 801-804 ◽

Cited By ~ 39

Author(s):

Qian Wang ◽

Bin Yang ◽

Yuepin Zhang ◽

Haiping Xia ◽

Tianchi Zhao ◽

...

Keyword(s):

Light Yield ◽

High Light ◽

High Light Yield

Download Full-text

Development of ultra-pure NaI(Tl) detectors for the COSINE-200 experiment

The European Physical Journal C ◽

10.1140/epjc/s10052-020-8386-8 ◽

2020 ◽

Vol 80 (9) ◽

Author(s):

B. J. Park ◽

J. J. Choi ◽

J. S. Choe ◽

O. Gileva ◽

C. Ha ◽

...

Keyword(s):

Crystal Growth ◽

Direct Detection ◽

Light Yield ◽

High Light ◽

Independent Verification ◽

High Light Yield ◽

Assembly Technique ◽

Modulation Signal ◽

Standing Question ◽

Detector Assembly

AbstractThe annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verification of its existence using the same detection technique. The COSINE-100 experiment has been operating with 106 kg of low-background NaI(Tl) detectors providing interesting checks on the DAMA signal. However, due to higher backgrounds in the NaI(Tl) crystals used in COSINE-100 relative to those used for DAMA, it was difficult to reach final conclusions. Since the start of COSINE-100 data taking in 2016, we also have initiated a program to develop ultra-pure NaI(Tl) crystals for COSINE-200, the next phase of the experiment. The program includes efforts of raw powder purification, ultra-pure NaI(Tl) crystal growth, and detector assembly techniques. After extensive research and development of NaI(Tl) crystal growth, we have successfully grown a few small-size (0.61–0.78 kg) thallium-doped crystals with high radio-purity. A high light yield has been achieved by improvements of our detector assembly technique. Here we report the ultra-pure NaI(Tl) detector developments at the Institute for Basic Science, Korea. The technique developed here will be applied to the production of NaI(Tl) detectors for the COSINE-200 experiment.

Download Full-text

Inorganic, Organic, and Perovskite Halides with Nanotechnology for High–Light Yield X- and γ-ray Scintillators

Crystals ◽

10.3390/cryst9020088 ◽

2019 ◽

Vol 9 (2) ◽

pp. 88 ◽

Cited By ~ 31

Author(s):

Francesco Maddalena ◽

Liliana Tjahjana ◽

Aozhen Xie ◽

Arramel ◽

Shuwen Zeng ◽

...

Keyword(s):

High Energy Physics ◽

Low Cost ◽

Light Yield ◽

Fast Response ◽

High Energy ◽

High Light ◽

Scintillation Light ◽

High Light Yield ◽

Halide Perovskites ◽

Lead Halide

Trends in scintillators that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspections are reviewed. First, we address traditional inorganic and organic scintillators with respect of limitation in the scintillation light yields and lifetimes. The combination of high–light yield and fast response can be found in Ce 3 + , Pr 3 + and Nd 3 + lanthanide-doped scintillators while the maximum light yield conversion of 100,000 photons/MeV can be found in Eu 3 + doped SrI 2 . However, the fabrication of those lanthanide-doped scintillators is inefficient and expensive as it requires high-temperature furnaces. A self-grown single crystal using solution processes is already introduced in perovskite photovoltaic technology and it can be the key for low-cost scintillators. A novel class of materials in scintillation includes lead halide perovskites. These materials were explored decades ago due to the large X-ray absorption cross section. However, lately lead halide perovskites have become a focus of interest due to recently reported very high photoluminescence quantum yield and light yield conversion at low temperatures. In principle, 150,000–300,000 photons/MeV light yields can be proportional to the small energy bandgap of these materials, which is below 2 eV. Finally, we discuss the extraction efficiency improvements through the fabrication of the nanostructure in scintillators, which can be implemented in perovskite materials. The recent technology involving quantum dots and nanocrystals may also improve light conversion in perovskite scintillators.

Download Full-text

CsI:Tl+,Yb2+: ultra-high light yield scintillator with reduced afterglow

CrystEngComm ◽

10.1039/c3ce42645a ◽

2014 ◽

Vol 16 (16) ◽

pp. 3312-3317 ◽

Cited By ~ 25

Author(s):

Yuntao Wu ◽

Guohao Ren ◽

Martin Nikl ◽

Xiaofeng Chen ◽

Dongzhou Ding ◽

...

Keyword(s):

Energy Resolution ◽

Computer Tomography ◽

High Speed ◽

Light Yield ◽

High Light ◽

High Speed Imaging ◽

High Light Yield ◽

The Way

Simultaneous improvement in afterglow, light yield and energy resolution in CsI:Tl-based scintillators paves the way to its application in computer tomography and high-speed imaging.

Download Full-text