Detector Response to D-D Neutrons and Stability Measurements with 4H Silicon Carbide Detectors.

The use of wide-band-gap solid-state neutron detectors is expanding in environments where a compact size and high radiation hardness are needed, such as spallation neutron sources and next-generation fusion machines. Silicon carbide is a very promising material for use as a neutron detector in these fields because of its high resistance to radiation, fast response time, stability and good energy resolution. In this paper, measurements were performed with neutrons from the ISIS spallation source with two different silicon carbide detectors together with stability measurements performed in a laboratory under alpha-particle irradiation for one week.

14 MeV Neutrons for Mo/Tc Production: Experiments, Simulations and Perspectives.

Background: the gamma-emitting radionuclide Technetium-99m (Tc) is still the workhorse of Single Photon Emission Computed Tomography (SPECT) as it is used worldwide for the diagnosis of a variety of phatological conditions. Tc is obtained from Mo/Tc generators as pertechnetate ion, which is the ubiquitous starting material for the preparation of Tc radiopharmaceuticals. Mo in such generators is currently produced in nuclear fission reactors as a by-product of U fission.