The CsI (Tl) crystal used in Radiation Alert® Probes has a higher atomic number, is more rugged, and less hygroscopic than a typical Nal detector.
The improved gamma ray absorption allows a thinner crystal to be used, effectively reducing the
Specifications
| Detector |
| Type-CsI (Tl) crystal (Cesium Iodide Thallium) RAP47 - 1.0" dia. x .04" thick (25.4 x 1.0mm) RAP640 - 1.0" dia x 1.0" thick (25.4 x 25.4mm) |
| Radiation Detected |
| RAP47 - gamma 8 keV to 1 MeV. Typical Absorption 100% at 47keV, 80% at 100 keV RAP640 - gamma 8 keV to 3 MeV. Typical Absorption 70% at 600 keV, 50% at 840 keV |
| Probe Construction |
| Anodized aluminum housing. Approximate size: length 7-7.5 inches, diameter 1.5 inches. Connectors-Standard MHV. Cable (Optional)-Straight RG59/u, length 3.5 feet. |
| Temperature Range |
| -25°C to 40°C (-4°F to 104°F) |
| Humidity Range |
| 0 to 90% Relative Humidity. |
| Weight |
| RAP47-Approx. 178 g (6.3 oz.) without cable RAP640-Approx. 290 g (10.25 oz.) without cable |
| Warranty |
| One year limited. |
| RAP47 | RAP640 |
| Thin-crystal (1 mm) optimizes sensitivity to low energy gamma radiation while minimizing sensitivity to higher energies. An excellent detector for Iodine-125 and suitable for thyroid uptake measurements | Superior to a 1 x 1-inch NaI detector, this is a great choice for an all-around gamma and x-ray detector. Optimal energy range of about 20 keV to 2 MeV. Highest efficiency for a broad spectrum of gamma-emitting isotopes. |
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| Cat. NO. | Description |
| SERAP47-00 | Probe for Low Energy Gamma |
| SERAP640-0. | Probe for Higher Energy Gamma |








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