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A complete detector assembly utilizing a 25mm diameter end windowed GM tube for Alpha Beta Gamma detection. The plastic stand includes a sample tray and features 10-slots with 1cm spacing for performing inverse square law experiments and holding radiation absorbers.
The GM probe is readily removed from the stand for safe storage, hand-held applications or replacement.
Component Parts.

Replacement GM tube. 25mm end window, 2mg/cm2, 150v plateau, 150 microsec. deadtime, BNC connector. 25mm OD, x90mm L.

Similar to the GP 25 but with a 35mm Geiger tube for added sensitivity and improved counting efficiency.
Component Parts.

Replacement GM tube. 35mm end window, 2mg/cm2, 150v plateau, 200 microsec. deadtime, BNC connector. 35mm OD, x223mm L.

The SPA 38 provides a complete detector assembly for gamma spectroscopy applications. The 38x38mm NaI(Tl) crystal includes PMT and voltage divider as an integral assembly. The probe is supplied complete with a 10-position sample stand, lead shield and cables for connecting directly to the spectrometer. Resolution is typically 7% @ 662 keV.
Component Parts.

Replacement scintillation detector, 38x38mm crystal, with integral voltage divider, 7% resolution.

This well detector assembly includes a NaI(Tl) 1.75x2" crystal with 0.7x1.5" well, voltage divider, stand, lead shield and cable(s). It ideally suited for measuring tube samples and wipes using a multichannel analyzer or scintillation counter.
SP78W-1 Single wire connection for scintillation counters.
SP78W-2 Separate HV and signal cables for use with MCA's.

Replacement scintillation detector for SP78W.
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