Physics – Instrumentation and Detectors
Scientific paper
2009-08-09
Nucl.Instrum.Meth.A609:32-37,2009
Physics
Instrumentation and Detectors
Accepted for publication in Nuclear Instruments and Methods in Physics Research Section A
Scientific paper
10.1016/j.nima.2009.07.061
Organic scintillators are widely used for fast neutron detection and spectroscopy. Several effects complicate the interpretation of results from detectors based upon these materials. First, fast neutrons will often leave a detector before depositing all of their energy within it. Second, fast neutrons will typically scatter several times within a detector, and there is a non-proportional relationship between the energy of, and the scintillation light produced by, each individual scatter; therefore, there is not a deterministic relationship between the scintillation light observed and the neutron energy deposited. Here we demonstrate a hardware technique for reducing both of these effects. Use of a segmented detector allows for the event-by-event correction of the light yield non-proportionality and for the preferential selection of events with near-complete energy deposition, since these will typically have high segment multiplicities.
Aigeldinger G.
Bowden Nathaniel S.
Marleau Peter
Mengesha W.
Mrowka Stan
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