Nuclear radiation
Semiconductor detectors
and Associated electronics
Nuclear radiation
Semiconductor detectors
and Associated electronics
Spectrometric Detection Probes
Spectrometric Detection Probes SDP500, SDP1500 and SDP4000 are room temperature operating portable devices with high efficiency large volume CdZnTe quasi-hemispherical detectors. The detection probes are designed for application in an equipment for measurements and analysis of gamma-radiation spectra. The detection probes consists of the CdZnTe detector and charge sensitive preamplifier mounted inside of a sealed cylindrical case with permanent attached cable. Due to its small dimensions and weight the detection probes are convenient for placement in hard for measurements places. The detection probes is powered and connected to the recording equipment by a radiation-resistant connecting cable with maximal length up to 30 m.
Spectra of 137Cs and 241Am registered by the SDP4000. Detector volume 4000 mm3.
Spectrum of 226Ra (old wristwatch) registered by the SDP1500. Detector volume 1600 mm3.
| Detector | Probe head dimensions, mm | Detector Volume, cm3 | Bias Voltage, V | Energy Resolution (FWHM) at 662 keV, %* | Peak-to-Compton Ratio at 662 keV* |
| SDP 500S | ∅ 24 x 58 | 0.5 | ≤ 1500 | ≤ 2.3 | ≥ 5.0 |
| SDP 1500 | ∅ 32 x 58 | 1.6 | ≤ 2000 | ≤ 3.0 | ≥ 5.0 |
| SDP 4000 | ∅ 40 x 58 | 4.0 | ≤ 3000 | ≤ 3.5 | ≥ 5.0 |
* measured at room temperature
** other connectors types are available
*** other connecting cable lengths up to 50 m are available