SIGMA scintillator detectors

When you need a fast and light detector.

SIGMA a family of scintillator-based detectors

CsI(Tl) thallium activated caesium iodide scintillator radiation detector

Our SIGMA range of CsI(Tl) thallium activated caesium iodide scintillator radiation detector products replaces conventional photomultiplier technology with state of the art SiPMs. These gamma-ray detectors offer up to 32.8 cm3 of detection volume, delivered in a package providing significant benefits in cost, size, weight, power consumption and temperature stability.

CsI(Tl) has a light output of 54 photons/keV and is one of the brightest scintillators known, as well as good gamma-ray photon stopping power which makes CsI(Tl) well suited for gamma radiation detection. The crystal itself is robust and can survive in handheld portable detectors and operate at room temperature.

The SIGMA range interfaces directly with Kromek’s KSpect or MultiSpect gamma spectroscopy software.

Watch the video for a full overview of the detector

Applications and features

  • Radiation Safety
  • Health Physics
  • Industrial and Medical
  • Homeland Security
  • Research Laboratories
Model Case
size (mm)
size (mm)
SIGMA-50 35x35x130 25.4×25.4×51 32.8 <7.2 300
SIGMA-25 35x35x105 25.4×25.4×25.4 16.4 <7.2 200

Robust, small and light SIGMA caesium iodide scintillator radiation detectors are perfect for radiation detection in the field and in the lab. Clients have flown them on drones, built them into large detector arrays and other devices. If you need fast detection in an easy to use package this is what you need.

Read the SIGMA gamma detector datasheet

A one-page PDF will all the technical specifications for both SIGMA 50 and 25 radiation detectors.

Find out SIGMA prices and talk to an expert

Tell us a little about your requirements and our team will be in touch.

Stay up to date with Kromek news

Subscribe to our newsletter

Unsure what product you need?

Use our Product Finder tool