2014/08/14 by J.J. Blostein, Blostein, Juan Jerónimo, Juan Estrada +9 · 1 citation
Medicine · Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Nuclear Physics and Applications #Radiation Detection and Scintillator Technologies #Radiation Therapy and Dosimetry
paper · pdf · doi:10.48550/arxiv.1408.3263
openalex publication_date 2014/08/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This article describes the design features and the first test measurements\nobtained during the installation of a novel high resolution 2D neutron\ndetection technique. The technique proposed in this work consists of a boron\nlayer (enriched in 10B) placed on a scientific Charge Coupled Device\n(CCD). After the nuclear reaction 10B(n,\α)7Li, the CCD\ndetects the emitted charge particles thus obtaining information on the neutron\nabsorption position. The above mentioned ionizing particles, with energies in\nthe range 0.5-5.5 MeV, produce a plasma effect in the CCD which is recorded as\na circular spot. This characteristic circular shape, as well as the\nrelationship observed between the spot diameter and the charge collected, is\nused for the event recognition, allowing the discrimination of undesirable\ngamma events. We present the first results recently obtained with this\ntechnique, which has the potential to perform neutron tomography investigations\nwith a spatial resolution better than that previously achieved. Numerical\nsimulations indicate that the spatial resolution of this technique will be\nabout 15 \μm, and the intrinsic detection efficiency for thermal neutrons\nwill be about 3 %. We compare the proposed technique with other neutron\ndetection techniques and analyze its advantages and disadvantages.\n