Alpha/Beta/Gamma

Alpha/Beta/Gamma Detectors

Model 44-7

Ludlum Part Number: 47-1536

Alpha, Beta, Gamma Survey; Sample Counting
End Window GM Radiation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 2100 cpm/µR/hr
Energy Response: Energy Dependent
Background: 40 cpm

Efficiency: 2% C-14; 10% Sr-90/Y-90; 7% Tc-99; 7% Pu-239; 0.1% I-125
Window Active Area: 6 cm²
Window Open Area: 7 cm²

Data Sheet Product Manual Detector Clips

Model 44-9

Ludlum Part Number: 47-1539

Alpha, Beta, Gamma Survey; Sample Counting
Pancake GM Radiation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 3300 cpm/µR/hr
Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239; 0.2% I-125; less than 1% Tc-99m

Energy Response: Energy Dependent
Background: 60 cpm
Window Active Area: 15.51 cm²
Window Open Area: 12.26 cm²

Data Sheet Product Manual Detector Clips Dose Filter

Model 44-9-18

Ludlum Part Number: 47-2940

Alpha, Beta, Gamma Survey; Sample Counting
Pancake GM Radiation Detector with Telescoping Handle and Flexible Tube
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 3300 cpm/µR/hr
Energy Response: Energy Dependent
Background: 60 cpm

Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239; 0.2% I-125; less than 1% Tc-99m
Window Active Area: 15.51 cm²
Window Open Area: 12.26 cm²

Data Sheet Product Manual

Model 44-40 & 44-40-2

Ludlum Part Number: 47-1538

Alpha, Beta, Gamma Survey; Sample Counting
Pancake GM Detector with Lead Shielding
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 3300 cpm/µR/hr
Energy Response: Energy Dependent
Background: 25 cpm

Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239; 0.2% I-125
Window Active Area: 15.51 cm²
Window Open Area: 12.26 cm²

44-40 Data Sheet 44-40-2 Data Sheet Product Manual

Model 44-88

Ludlum Part Number: 47-2356

Alpha, Beta, Gamma Survey; Sample Counting
Pancake GM Radiation Detector
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 3300 cpm/µR/hr
Energy Response: Energy Dependent

Background: 60 cpm
Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239
Window Active Area: 15.51 cm²
Window Open Area: 12.26 cm²

Data Sheet Product Manual Detector Clips

Model 44-89

Ludlum Part Number: 47-2357

Alpha, Beta, Gamma Survey; Sample Counting
4 Pancake GM Radiation Detectors in Square Configuration
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 13,200 cpm/µR/hr
Energy Response: Energy Dependent

Background: 240 cpm
Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239
Window Active Area: 62 cm²
Window Open Area: 50 cm²

Data Sheet Product Manual

Model 44-94

Ludlum Part Number: 47-2390

Alpha, Beta, Gamma Survey; Sample Counting
4 Pancake GM Radiation Detectors in Diamond Configuration
Used with Ludlum General Purpose Radiation Survey Meters, Ratemeters, Scalers
Sensitivity (Cs-137): 13,200 cpm/µR/hr
Energy Response: Energy Dependent

Background: 240 cpm
Efficiency: 5% C-14; 22% Sr-90/Y-90; 19% Tc-99; 32% P-32; 15% Pu-239
Window Active Area: 62 cm²
Window Open Area: 50 cm²

Data Sheet Product Manual

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