Boron Lined Proportional Counters
Boron
Lined Proportional Counters are sensitive to neutrons in the same way
as BF3 neutron proportional counters but incorporate
the boron as a solid coating rather than in gaseous form. Boron Lined
Proportional Counters are typically used where circumstances, e.g. high
operating temperatures, prevent the use of BF3
as the neutron detecting medium.
Selection from product range – summary of parameters
| Type | Approximate Neutron Sensitivity cps/nv | Typical Operating Voltage for 1.275 I.P/Pulse | EHT Plateau Slope %/100V | Insulation Ohms at 800V | Majority Pulse Risetime nS |
| PN9EB20/25 | 1.8 | 630V | <12 | >1012 | <500 |
| PN10EB20/25 | 2 | 630V | <12 | >1012 | <500 |
| PN12.5EB20/25 | 2.5 | 630V | <12 | >1012 | <500 |
| PN31EB20/25 | 6.2 | 630V | <12 | >1012 | <500 |
| PN50EB20/25 | 10 | 630V | <12 | >1012 | <500 |
| PN84EB20/25 | 16.2 | 630V | <12 | >1012 | <500 |
| PN100EB20/25 | 20 | 630V | <12 | >1012 | <500 |
Detectors available in stainless steel construction. HN connectors are
fitted as standard. Other connectors are available.