Radiation detection and identification

RATEC technologies against nuclear terrorism

Today a radiological and/or nuclear attack has become a serious threat in a world and this threat only continues to grow. It is obvious that number of countries and non-state actors seeking access to nuclear and radiological materials is increasing so demand that can detect the basic materials needed for a radiological and/or nuclear attack gained crucial importance.

The conventional Portal Monitors for radioactivity detection cannot distinguish between harmless radiological materials and dangerous nuclear materials such as highly enriched uranium (HEU). However, they tend to be triggered by materials that are naturally radioactive, such as plantains, kitty litter and fertilizer. Therefore to confirm and identify radiation source a secondary physical inspection is required which is always time consuming and high cost.

RATEC Spectroscopic Radiation Detection systems are designed to detect the movement of dangerous radionuclide and nuclear weapons via high sensitive gamma/neutron detectors and high speed electronics combined with advanced gamma spectroscopy algorithms.

Ratec has developed and offers an advanced spectrometry systems for gamma and neutron radiation detection with analytical algorithms providing a comprehensive solution for threats identification tasks. Signals collection system is equipped with electronics of special design that eliminate pile-up and dead time effects allow the algorithms processing information for multipurpose tasks. Ratec detectors systems are successfully applied in spectroscopic measurements via passive monitoring or active interrogation analysis.

Ratec pile-up rejector

Pile-up occurs when two pulses of gamma radiation arrived at the detector within its resolving time. In that case they are processed together leading to pile-up and summing effect. Acquired spectroscopic data is distorted by pile-up as it can cause count to be lost as two random pulses combine into single pulse. Ratec team is developed pile-up rejector that significantly reduces count rate losses.
Xe - spectra acquired when Ratec rejector switch-on,
Xr - pile –up effect,
XΣ - spectra acquired when Ratec rejector switch-off.

Dead time free electronics

Conventional spectroscopic systems usually have microsecond dead time after the detected event. Ratec design electronics eliminate dead time losses.

Identification algorithms