User Manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
BF3 COUNTER TUBES
Neutron Flux Instrumentation
BF3 COUNTER TUBES
Proportional Counter Tubes BF3 Filled
The neutron sensitivity of these proportional counters
is achieved by  lling the tube with the gas boron-tri-
uorid, made of highly enriched Boron-10. Thermal
neutrons react with the isotope Boron-10 emitting
alpha particles, which produce ionization in the gas
lling of the detector (electrons and gas ions). In the
electrical  eld between the electrodes these charged
particles will be accelerated and secondary ionization
happens. This so called “gas ampli cation” multiplies
proportionally the amount of charge generated in the
tube.
APPLICATIONS
Operational process monitoring
Detection and measurement of the thermal
neutrons outside the reactor core for neutron dose
rate monitoring and neutron  ux monitoring in the
pulse range
RELATED PRODUCTS
KNK/KNU 50: neutron ionization chambers
Self-powered neutron detectors
TK 250: digital signal processing channels for
start-up and power range
FEATURES
Detection of thermal neutrons
High sensitivity due to  lling with enriched BF
3
gas
Proven construction
1” (25.4 mm) diameter
Large measuring range
Output signal: charge pulses
Very low gamma sensitivity

Summary of content (2 pages)