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The SIGMA family is based on a CsI scintillator crystal coupled to a 'state-of-the-art' SiPM (Silicon Photomultiplier) detector, high voltage, electronics and integrated MCA.
The SIGMA family is based on a CsI scintillator crystal coupled to a “state-of-the-art” SiPM (Silicon Photomultiplier) detector, high voltage, electronics and integrated MCA. All communication and power are provided over the mini-USB connector.
The SIGMA family comes in two scintillator sizes. The SIGMA25 has a 1 in³ CsI detector and the SIGMA50 has a 2 in³ CsI detector. All other aspects of the two devices are identical. Both units have a FWHM resolution specification of 7.2% at 662 keV, which is comparable to many NaI based solutions.
The profile of the SIGMA detectors makes them ideal for many portable spectroscopy applications where size, weight and power constraints are very important. The embedded MCA has a fixed number of channels, fixed high voltage and gain that provides a simple interface that is easy to setup and operate with essentially no configuration.
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