CHM14 Neutron Detector
Posted: Wed Jun 26, 2019 4:29 pm
Running some preliminary tests using a Ludlum 2221 scaler and a boron CHM14 neutron detector.
My neutron source is a 10 month old Po210 Nuclispot paired up with Be. It’s far from its original potency but it still gives me some output I can use for testing.
The moderator is a 10x8” cylinder of paraffin wax.
With no moderator or source nearby, the CHM14 will average around 1cpm. With the source and tube in the moderator cavity I average approx 15cpm. As a side note, my neutron count numbers were almost double 10 months ago when the Nuclespot was new.
The tube is blind to all the Ra226 gamma sources I have on hand. I’ll conduct the same test with xrays from the fusor later this evening.
Mark Rowley
My neutron source is a 10 month old Po210 Nuclispot paired up with Be. It’s far from its original potency but it still gives me some output I can use for testing.
The moderator is a 10x8” cylinder of paraffin wax.
With no moderator or source nearby, the CHM14 will average around 1cpm. With the source and tube in the moderator cavity I average approx 15cpm. As a side note, my neutron count numbers were almost double 10 months ago when the Nuclespot was new.
The tube is blind to all the Ra226 gamma sources I have on hand. I’ll conduct the same test with xrays from the fusor later this evening.
Mark Rowley