NMD-3 Gamma Radiation Monitor
NMD-3 is a low-resolution spectrometer of gamma radiation made from the cheap and reliable plastic scintillator. The purpose of the device is to detect radioactive material passing by inside a vehicle, conveyor, air duct, or piping.
- Low cost and robust plastic scintillator
- Spectroscopic signal analysis for radiation source discrimination and improved sensitivity
- Customizable: Detector shape and dimensions, software interface, and hardware peripherals are chosen according to customers requirements
Prototype model parameters
Fast acquisition and high sensitivity: will detect 12 micrograms of Cs-137 isotope inside a vehicle passing by at 70 km/h at a distance of 5 m in a typical 20 uR/h background.
- Scintillator material: plastic
- Scintillator volume: 20 liters
- Spectral sensitivity improves detection range and allows radiation source discrimination
- Multichannel analyzer: 2048 channels, 16 bit per channel
- Gamma energy range: 3000 keV
- Background auto-correction
- Integration time frame: 300 ms
- Detection threshold: 1000 kBq of Cs-137 (detection probability 0.5 at 95% confidence probability) at background rate 20 µR/h
- False alarm rate < 1/1000
- Operating temperature range: -50°С to +50 °С
- PC Interface: USB
- Dimensions: 800х960×210 mm
- Weight: 41 kg
Target applications
Portal monitor
- Road Traffic “in situ” monitoring
- Railroad cargo monitoring
- Container monitoring in ports
- Safety control in subway embedded in a turnstile
Conveyor monitor
- Raw products input inspection
- Parcel inspection
- Waste recycling
- Mining
Pipeline monitor
- Drinking water pipelines
- Air ducts
