CsI(Tl) scintillation crystal. Crystal size 10*10*20 mm = 2 cm3, Fantastic resolution of 5.9%@662 keV measured using Atom Nano Pro electronics and 1 uCi Cs137 point source from the side opposite to SiPM. Best specimen from my collection! For best results use with 42.5 Volts bias. Excellent gain - at least 2 nC of charge per MeV of dissipated energy with 42.5 V bias voltage.
General scintillator properties:
| Parameter | Unit | Value |
| Max. Emission Wavelength | nm | 550 |
| Average Light Decay Time | ns | 900 |
| Average Light Yield | photons/MeV | 60000 |
| Density | g/cm3 | 4.51 |
| Effective atomic number | Z | 54 |
| Crystal size | mm / cm3 | 10*10*30 / 3 |
| Energy range | keV | 10-3000 min. |
Want to build a portable and very sensitive gamma spectrometer - it's your chance!
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Any questions? Feel free to contact me.