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Thermal Column

The thermal column irradiation facility, which is situated behind the thermal column extension in the west wall of the reactor pool, consists of a large volume of graphite to thermalize neutrons and offers a very thermalized neutron field in a four-inch by four-inch area for experimentation. At the core end of the thermal column, there is a maximum thermal flux of ~2x1011 n/cm2/s. At other locations in the thermal column, the thermal neutron flux is on the order of 109-1010 n/cm2/s.

An aluminum sample holder box is available for irradiation of samples in the thermal column, and an acrylic “sled” is available for irradiation of neutron-sensitive detectors.

 

Aluminum irradiation box used for experiments in OSURR thermal column
TC Sample Holder Box
NRL staff member measuring radiation dose rate in front of thermal column facility
Thermal column facility