GENEQ > Environment > Radiation Monitors

Scintillation Probes

The Csl(Tl) crystal used in the Radiation Alert Probes has a higher atomic number, is physically more rugged, and less hygroscopic than a typical Nal detector. The improved gamma ray absorption of Csl(Tl) allows a thinner crystal to be used, which effectively reduces the background count rate.

RAP 47
The RAP47 is optimized for high sensitivity to low energy gamma radiation. It is ideal for the detection of 47 keV the typical energy of lead 210 and 35 keV the typical energy of lodine-125.

RAP200
The handheld RAP200 scintillation probe has a high sensitivity to gamma radiation. The RAP200 is optimized for the detection of 185 keV typical energy of U-235 and for the detection of Ra-226.

SPECIFICATIONS
Detector (Type) Csl(Tl) crystal (Cesium lodide Thallium)
Detector (Dimensions)
  • RAP47 - Round 25.4 mm (1") x 1.0 mm (.04") thick
  • RAP200 - Round 25.4 mm (1") x 6.35mm(.25") thick
Radiation Detected Gamma radiation from
  • RAP47 - Typically efficiency to l-125 (35keV) is 41%
  • RAP200 - Approx. 1400 CPS per mR/hr(referenced to Cs-137)
Temperature Range -25°C to +40°C
Humidity Range 0 - 90% Relative Humidity
Operating Voltage 600 - 1100 volts. 900 volts optimum
Probe Construction Anodized aluminum housing
Probe Size Max. length 7 in. diameter 1.5 in.
Probe Connectors Standard MHV
Probe Cable (optional) Straight RG59/u, length 3.5 feet
Weight
  • RAP47 - Max approx 6.3 oz. without cable
  • RAP200 - Max. approx 8.5 oz. without cable
Warranty One year limited

CAT. NO.
 DESCRIPTION
SERAP47-00 Probe for Low Energy Gamma
SERAP200-0 Probe for Higher Energy Gamma