A 1-Megawatt research reactor produces thermal neutrons for radioactivation purposes and for digital neutron radiography. Fast neutrons for atomic displacement research are produced by both the reactor and the 5.5 MV Pulsed van-de-Graaff accelerator.
For studies of atomic displacement effects:
Detailed information on this facility is available by downloading the following pdf file: FNI.pdf
For research and evaluations requiring fast neutrons fluences with minimal slow neutrons and gamma ray components, a range-thick, metallic lithium target is bombarded with protons from the 5.5 MV Pulsed van-de-Graaff accelerator. These neutron fluences may be used to study the effects of atomic displacement damage on semiconductors and other materials. This method can achieve a total fluence of 1015 neutrons/cm2 in a 24-hour period.
UMass Lowell Research Reactor offers Digital Neutron Radiography as a quality assurance and R&D tool for non-destructive inspection of mechanical parts, electronics, and assemblies, including voids; missing/misplaced parts; corrosion or hydrogenous substances in sealed units; adhesive bonding flaws; channel blockages channels; water behavior; distribution of neutron absorbers in materials for nuclear applications.
Digital images are produced using a CCD camera system in conjunction with a fast response LiF neutron converter screen. Specimens to be radiographed are placed on a large, precision positioning table, which can be rotated through 360 degrees, translated across the face of the imaging detector, and raised or lowered almost 12 inches, as needed. Remote web based access to imaging and sample positioning is available.
The Digital Radiography system is equipped with a viewing room having a high-speed, high-storage capacity computer displaying imaging results on a dual monitor setup. The computer provides for keyboard and mouse control of the specimen position and for processing of the radiographic images. A large format printer is available for image archive and reproduction.
Detailed information on this facility is available by downloading the following pdf file: NRAY.pdf
One of the most sensitive methods for measuring the concentration of trace amounts of many elements simultaneously: