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SDA38 – Sodium Iodide Scintillation Detector

The SDA, Sodium Iodide Scintillation Detector will detect gamma radiation. It is not suitable for alpha or beta radiation.

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The SDA38 Sodium Iodide Scintillation Detector features a 1.5 x 1.5 inch NaI(Tl) crystal in an aluminum housing, including a photomultiplier tube, an internal magnetic shield, and high voltage and signal BNC connectors.

Cables not included.

Relative Light Yield 100%
Photon Yield/MeV (PMT Sensor) 45,200
Scintillation Quantum Efficiency with PD 12.85%
Radiation Length 2.59 cm
Radiation Hardness to gamma-rays >1000 rad
Linear Attenuation Coefficient 0.3505 cm-1
Thickness to Attenuate 90% of gamma-rays  6.5 cm
Full Width at Half Maximum (FWHM) 8.5 % @ 662 keV for Cs-137
α/β Ratio Cleaved Surface 0.6-0.7
α/β Ratio (241Am-Tl) Doping
 0.82
NaI(Tl) Size (length x diameter) 1.5 x 15. inches (38.1 x 38.1 mm)
Housing Material Aluminum
Type of Connectors – High Voltage: BNC
– Signal: BNC
Approximate Weight 0.43 kg (0.96 lbs)

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