4031
Beryllium end window proportional counter
General Specifications
| MAXIMUM LENGTH (INCH/MM) | 
2.5/63.5 | 
| MAXIMUM DIAMETER (INCH/MM) | 
1.31/33.27 | 
| GAS FILLING | 
Argon | 
| EFFECTIVE LENGTH (INCH/MM) | 
0.50/12.7 | 
| CATHODE MATERIAL (INTERNAL/EXTERNAL) | 
Stainless Steel | 
| EFFECTIVE DIAMETER (INCH/MM) | 
1.0/25.4 | 
| CONNECTOR | 
Pin | 
| OPERATING TEMPERATURE RANGE °C | 
-40 to +75 | 
| GAS PRESSURE (TORR) at 21°C | 
800 | 
| PATH LENGTH (INCH/MM) | 
0.50/12.7 | 
Window Specifications
| MATERIAL | 
Beryllium | 
| THICKNESS (INCH/MM) | 
0.002/0.05 | 
| AREAL DENSITY (MG/CM²) | 
9.2 | 
| DIAMETER (INCH/MM) | 
1.0/25.4 | 
Electrical Specifications
| RECOMMENDED OPERATING VOLTAGE (VOLTS) | 
1600 | 
| OPERATING VOLTAGE RANGE (VOLTS) | 
1500 - 1750 | 
| CAPACITANCE (PF) | 
2 | 
| TYPICAL RESOLUTION (FWHM FE55) | 
20 | 
