7N Fast-Slow Neutron Monitor
The PUG-7N is a complete fast-slow neutron monitor. The Neutron PUG detects fast or slow neutrons by means of a thermal neutron scintillation detector and a moderator. The detector (Model # PNS-20) is external to the moderator. Thermal neutrons are detected and measured in counts produced within the scintillation detector which is displayed on the meter face of the instrument. The polyethylene moderator is surrounded by a cadmium shield. The cadmium shield absorbs thermal neutrons and allows other neutrons to enter the moderator. The moderator thermalizes the entering neutrons thus allowing them to affect the scintillation detector. When the thermal neutron detector is within the moderator, thermal neutrons are excluded by the cadmium layers and the detector measures only fast neutrons which have entered the moderator.
FEATURES:
o Detects fast or slow neutrons
o Gamma rejection to 100r/hr
o Easy to carry - less than 9 pounds
o Operates on standard d cells
o Four ranges
Direct Scientific www.drct.com
