Fast Neutron Flux Irradiation Device for a 1-MW TRIGA Research Reactor
M. S. Brightwell, W. D. Reece
A fast flux irradiation device (FFID) was developed for the Texas A&M Nuclear Science Center's 1-MW TRIGA reactor, primarily for use in the fields of geochronology and thermochronology with unprecedented irradiation characteristics for the Ar-40/Ar-39 dating technique. The FFID consists of a dry, vertical tube that extends upward from the reactor core to the reactor support bridge. A boron-shielded rotisserie inserted into the vertical tube port, houses the samples in the core region, stabilized radially below the rotisserie, by bayonet inserted into a core grid plug and above the rotisserie by polyethylene plugs. The polyethylene plugs also serve as radiation shields to minimize the gamma and neutron dose rates at the reactor bridge level.
This abstract was presented at the 32nd Annual Midyear Meeting, "Creation and Future Legacy of Stockpile Stewardship Isotope Production, Applications, and Consumption", Instrumentation, Monitors, and Devices Session, 1/24/1999 - 1/27/1999, held in Albuquerque, NM.