Rad Man Minerals
Ludlum Model 44-21 Beta/Gamma Scintillator Probe
Ludlum Model 44-21 Beta/Gamma Scintillator Probe
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$200.00 USD
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$200.00 USD
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A used, but functional Ludlum 44-21 Beta/Gamma Scintillator Probe. This probe is fully functional, though there does appear to be some minor damage to the mylar on the end of the probe, so that probably has to be replaced. I've been using it mostly with a plastic cap on the end, but due to getting other probes now this one is just sitting in my equipment box mostly.
Info from Ludlum:
| Indicated Use | Beta; Low-energy gamma detection |
|---|---|
| Detector Type | NaI(Tl) scintillator, 2.54 cm (1 in) dia. x 0.1 cm (0.04 in) thick, adhered to plastic scintillator, 0.03 cm (0.01 in) thick |
| Window | 3.4 mg/cm2 |
| Window Area |
Active: 5.1 cm2 (0.8 in2) Open: 5.1 cm2 (0.8 in2) |
| Efficiency (4π) |
14C: 4% 32P: 28% 125I: 38% 129I: 19% |
| Typical Background (10 µR/hr field) |
450 cpm |
| Non-Uniformity | < 10% |
| Photomultiplier Tube | 3.8 cm (1.5 in) diameter |
| Operating Voltage | 500 to 1200 V (typical) |
| Connector | Series "C" (others available) |
| Construction | Aluminum housing with beige powder coat |
| Size (D x L) | 5.1 x 18.5 cm (2 x 7.3 in) with connector cap |
| Weight | 0.5 kg (1 lb) |
