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Csi Scintillation Crystal Cesium Iodide
Posted at: Offers to Sell and Export | Posted on: Thursday 22 January 2026 1:51 am | Poster last visit: Thursday 22 January 2026 |
Product Category: Main
» Laboratory and Measuring and Observing and Testing Equipment
» Laboratory and scientific equipment
» Crystallography equipment
» Scintillation crystal assemblies
» Csi Scintillation Crystal Cesium Iodide
Product Description:
Cesium iodide (CsI (Tl)), activated by thallium, is one of the most efficient scintillators discovered
so far. CSI Crystal exhibits thallium-activated luminescence with an emission peak at 550 nm and a light output of 45% relative to NaI (Tl). In contrast, cesium iodide activated by sodium (CsI (Na)) features a sodium-activated emission peak at 420 nm and a higher light output (85% of NaI (Tl)). Both materials share properties such as deliquescence, soft and plastic mechanical behavior, radiation resistance, high-temperature tolerance, and fast timing characteristics (for pure CsI). They are widely used in particle detection for high-energy physics experiments, medical SPECT imaging, baggage/container security inspection, industrial level sensing and non-destructive testing, and cosmic ray research in space physics.
Specification Parameter
Properties Value Unit
Density 4.51 g/ cm³
Melting point 894 K
Hardness 2 Mohs
Refractive index 1.79
Light yield 56000 Photon/Mev
Decay Constant 1020 ns
Wavelength of emission max. 550 nm
Afterglow (after 30ms) 0.5-0.8 %
Hygroscopic slight
CsI (Tl) scintillator (Cesium Iodide) delivers high light output, excellent detection sensitivity, and good energy resolution, making it a preferred choice for radiation detection and medical imaging applications, including CT scans, SPECT imaging, and other diagnostic modalities. Its strong gamma-ray stopping power also makes it ideal for security screening in airports, customs, and critical infrastructure facilities.
With an emission peak around 550 nm, CsI (Tl) is well matched to photodiode readout systems, ensuring efficient light collection and optimal system performance.
CSI Crystal offers good mechanical strength and excellent machinability, allowing it to be fabricated into a wide range of shapes and sizes. EBO provides customized solutions, including linear and two- dimensional scintillator arrays, tailored to specific detector configurations.
It should be noted that CsI (Tl) is slightly hygroscopic, therefore, proper encapsulation is essential to minimize moisture exposure and maintain long-term stability and performance
Advantage of CSI Crystal:
High density
Compatible with photodiode readout
Have a light emission at 550 nm
Relatively bright - emits 54, 000 photons/ MeV (45% of NaI(Tl))
Absorber with good stopping power - density 4.51 g/ cm³, effective Z of 54
Broad emission, peak at 550nm, ideal for use with photodiodes
Rugged, with good mechanical properties
Application of CSI Crystal：
Radiation detection
Security and Industrial Inspection
Medical CT
Company Contact:
Contact Name: Furu Zhang
Company Name: Ningbo Ebo Optoelectronics Technology Co., Ltd
Email:
Tel: 0574-56217576
Fax:
Street Address: 4th Floor, Complex
Building, 36 Moganshan Road, Beilun
Ningbo, Zhejiang 315800
China
Website: https://www.ebocrystal.com/
Member name: ebocrystal
Country: China
Member Since: 22 January 2026
Total Leads: 5 ebocrystal Import Export Business Leads
Business focus: Scintillation Crystals, Csi Crystal, Bgo Crystal
Verify: Safe Import Export Tips
so far. CSI Crystal exhibits thallium-activated luminescence with an emission peak at 550 nm and a light output of 45% relative to NaI (Tl). In contrast, cesium iodide activated by sodium (CsI (Na)) features a sodium-activated emission peak at 420 nm and a higher light output (85% of NaI (Tl)). Both materials share properties such as deliquescence, soft and plastic mechanical behavior, radiation resistance, high-temperature tolerance, and fast timing characteristics (for pure CsI). They are widely used in particle detection for high-energy physics experiments, medical SPECT imaging, baggage/container security inspection, industrial level sensing and non-destructive testing, and cosmic ray research in space physics.
Specification Parameter
Properties Value Unit
Density 4.51 g/ cm³
Melting point 894 K
Hardness 2 Mohs
Refractive index 1.79
Light yield 56000 Photon/Mev
Decay Constant 1020 ns
Wavelength of emission max. 550 nm
Afterglow (after 30ms) 0.5-0.8 %
Hygroscopic slight
CsI (Tl) scintillator (Cesium Iodide) delivers high light output, excellent detection sensitivity, and good energy resolution, making it a preferred choice for radiation detection and medical imaging applications, including CT scans, SPECT imaging, and other diagnostic modalities. Its strong gamma-ray stopping power also makes it ideal for security screening in airports, customs, and critical infrastructure facilities.
With an emission peak around 550 nm, CsI (Tl) is well matched to photodiode readout systems, ensuring efficient light collection and optimal system performance.
CSI Crystal offers good mechanical strength and excellent machinability, allowing it to be fabricated into a wide range of shapes and sizes. EBO provides customized solutions, including linear and two- dimensional scintillator arrays, tailored to specific detector configurations.
It should be noted that CsI (Tl) is slightly hygroscopic, therefore, proper encapsulation is essential to minimize moisture exposure and maintain long-term stability and performance
Advantage of CSI Crystal:
High density
Compatible with photodiode readout
Have a light emission at 550 nm
Relatively bright - emits 54, 000 photons/ MeV (45% of NaI(Tl))
Absorber with good stopping power - density 4.51 g/ cm³, effective Z of 54
Broad emission, peak at 550nm, ideal for use with photodiodes
Rugged, with good mechanical properties
Application of CSI Crystal：
Radiation detection
Security and Industrial Inspection
Medical CT
Company Contact:
Contact Name: Furu Zhang
Company Name: Ningbo Ebo Optoelectronics Technology Co., Ltd
Email:
Tel: 0574-56217576
Fax:
Street Address: 4th Floor, Complex
Building, 36 Moganshan Road, Beilun
Ningbo, Zhejiang 315800
China
Website: https://www.ebocrystal.com/
Member name: ebocrystal
Country:
ChinaMember Since: 22 January 2026
Total Leads: 5 ebocrystal Import Export Business Leads
Business focus: Scintillation Crystals, Csi Crystal, Bgo Crystal
Verify: Safe Import Export Tips
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