1. Novel methods for measuring afterglow in developmental scintillators for X-ray and neutron detection
- Author
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Bartle, C.M., Edgar, A., Dixie, L., Varoy, C., Piltz, R., Buchanan, S., and Rutherford, K.
- Subjects
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AFTERGLOW (Physics) , *SCINTILLATORS , *X-rays , *NUCLEAR counters , *PHOSPHORS , *LUMINESCENCE , *IMAGING systems , *CONVEYOR belts - Abstract
Abstract: In this paper we discuss two novel methods of measuring afterglow in scintillators. One method is designed for X-ray detection and the other for neutron detection applications. In the first method a commercial fan-beam scanner of basic design similar to those seen at airports is used to deliver a typically 12ms long X-ray pulse to a scintillator by passing the test equipment through the scanner on the conveyor belt. In the second method the thermal neutron beam from a research reactor is incident on the scintillator. The beam is cut-off in about 1ms using a 10B impregnated aluminum pneumatic shutter, and the afterglow is recorded on a dual range storage oscilloscope to capture both the steady state intensity and the weak decay. We describe these measurement methods and the results obtained for a range of developmental ceramic and glass scintillators, as well as some standard scintillators such as NaI(Tl), LiI(Eu) and the plastic scintillator NE102A. Preliminary modeling of the afterglow is presented. [Copyright &y& Elsevier]
- Published
- 2011
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