Scintillation Detectors

Gamma Scintillation Detectors

Model 44-2

Ludlum Part Number: 47-1532

Low Level Gamma Radiation Survey
1 x 1 in. NaI(Tl) Scintillation Radiation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 175 cpm/µR/hr
Sensitivity (Cs-137): 175 cpm/µR/hr

Energy Range: 50 KeV to 1.5 MeV
Background: 1900 cpm
Efficiency: 7% I-125

Data Sheet Product Manual Detector Clips

Model 44-3

Ludlum Part Number: 47-1533

I-125 Low Energy Gamma Radiation Survey
1 in. x 1 mm thick NaI(Tl) Scintillation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (I-125): 675 cpm/µR/hr
Energy Range: 10 to 60 KeV

Background: 350 cpm or less
Efficiency: 33.5% I-125 (based on I-129 efficiency of 18%)

Data Sheet Product Manual Detector Clips

Model 44-10

Ludlum Part Number: 47-1540

Low Level Gamma Radiation Survey
2 x 2 in. NaI(Tl) Scintillation Radiation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 900 cpm/µR/hr
Energy Range: 50 KeV to 3.0 MeV

Background: 9750 cpm
Efficiency: 4.0% for I-125

Data Sheet Product Manual Detector Clips

Model 44-11

Ludlum Part Number: 47-1541

High Sensitivity Gamma Radiation Survey
2 x 2 in. NaI(Tl) Scintillation Radiation Detector
MCA Quality, Use with SCA, MCA
Sensitivity (Cs-137): 900 cpm/µR/hr

Energy Range: 50 KeV to 3.0 MeV
Background: 9750 cpm

Data Sheet Product Manual

Model 44-17

Ludlum Part Number: 47-1547

I-125 and Low Energy Gamma Radiation Survey
2 in. x 2 mm NaI(Tl) Scintillation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (I-125): 2500 cpm/µR/hr
Energy Range: 10 to 200 KeV

Background: less than 1500 cpm
Efficiency: 41.0% I-125 (based on I-129 efficiency of 22%)

Data Sheet Product Manual Detector Clips

Model 44-20

Ludlum Part Number: 47-1104

High Sensitivity Gamma Radiation Survey
3 x 3 in. NaI(Tl) Scintillation Radiation Detector
MCA Quality for Use with SCA, MCA
Sensitivity (Cs-137): 2300 cpm/µR/hr

Background: 23,000 cpm
Efficiency: 29.0% I-125

Data Sheet Product Manual

Model 44-213

Ludlum Part Number: 47-4134

Low Energy Gamma Radiation Survey
5 x 0.050 in. FIDLER CsI Scintillation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Efficiency (4π): 13% Am-241; 8% natural U

Energy Range: 10 to 200 KeV
Background: less than 9000 cpm
Window Active Area: 127 cm²
Window Open Area: 127 cm²

Data Sheet

Model 44-62

Ludlum Part Number: 47-1238

Low Level Wide-Energy Gamma Survey
0.5 x 1 in. NaI(Tl) Scintillation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 49 cpm/µR/hr

Energy Range: 50 KeV to 1.5 MeV
Background: 600 cpm

Data Sheet Product Manual

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