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Model NAIS-3x3 Sodium Iodide Scintillation Detector is a high-efficiency scintillation detector featuring a 3 x 3 in. NaI(Tl) crystal in an aluminum housing, including a photomultiplier tube, an internal magnetic/light shield, a high-voltage power supply (HVPS), stabilization electronics, preamplifier, and an 8-pin Mirion proprietary connector. NaI(Tl) detectors have a proven record of long term reliability and stability.
The NAIS-3x3 NaI(Tl) detector is LED temperature-stabilized*, eliminating the peak-shift problems inherent in scintillation detectors. This makes the NAIS-3x3 detector suitable for use in non-air-conditioned rooms as well as in field applications. The LED temperature-stabilized probe continuously monitors and adjusts the gain of the detector to ensure consistent performance throughout the entire temperature range. The consistent performance allows users to perform nuclear identification under all typical indoor and outdoor conditions while maintaining the highest confidence in the results obtained by the instrument.
The detector comes with a generic mathematical efficiency characterization known from the Mirion line of high-resolution HPGe detectors. Quantitative measurements can be performed without the use of calibration sources using the Mirion ISOCS™/LabSOCS™ mathematical efficiency calibration software.
The housing is of an all-metal construction and features a robust locking mechanism for increased reliability. The cam lock provides a positive mechanical connection to the tube base instead of relying on the electrical pin friction only.
In combination with the Osprey unit – the Mirion all-in-one HVPS, preamplifier, and digital MCA – the NAIS-3x3 detector becomes part of a high-performance scintillation spectrometry system suited for a wide range of applications – laboratory, radiation monitoring networks, field use, etc.