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  • CsI(Na) Scintillator Crystals
  • CsI(Na) Scintillator Crystals

CsI(Na) Scintillator Crystals

  • High Light Output
  • High Density and Atomic Number
  • Emission at 420nm and Matching Well to PMT
  • Applications: Well Logging, Space Research, Other Harsh Environmental Applications
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Basic Properties:

Melting Point (°C) 894 Density (g/cm3) 4.51
Cleavage Plane None Hardness(Mohs) 2
Hygroscopic Yes Refractive Index at Emission Peak 1.84
Emission Peak Wavelength 420 Lower Wavelength Cutoff(nm) 300
Decay Time(ns) 630 Light Yield(Photons/KeV) 41
Photoelectron Yield(% of NaI(Tl)) 85


Sodium doped Cesium Iodide or CsI(Na) has a wavelength of emission peak at 420nm, which makes it well matched to the photo-cathode sensitivity of bialkali photo multiplier (PMT), CsI(Na) scintilaltion crystals also has a high light output yielding up to 85% of NaI(Tl). Compared to NaI(Tl), it is a relatively soft and plastic material without cleavage plane,  which makes the CsI(Na) scintillator materials suitable for harsh environmental applications, like  well-logging, space research ect.. 

Hangzhou Shalom EO offers the CsI(Na) custom sctintillator, the polished  and encapsulated CsI(Na) crystals is available, and the Photo Multiplier (PMT) could be installed if it is requested. 

Scintillation Detectors (Scintillators+PMT+Electronics)

Scintillation Detectors (Scintillators+PMT+Electronics)

  • Aluminum or stainless steel housing
  • PMT made by Beijing Hamamatsu, ET, or others
  • Package with Voltage Divider, Preamplifier, High Voltage Module (HV), and Connectors available upon requests
  • Various scintillators options: NaI(Tl), CsI(Tl), CsI(Na), LYSO(Ce), BGO, LaBr3(Ce), LaCl3(Ce), CeBr3 and plastic scintillators
  • Main Applications: X-radiation and gamma detections