Alkali Halide Microstructured Optical Fiber for X-Ray DetectionMicrostructured optical fibers containing alkali halide scintillation materials of CsI(Na), CsI(Tl), and NaI(Tl) are presented. The scintillation materials are grown inside the microstructured fibers using a modified Bridgman-Stockbarger technique. The x-ray photon counts of these fibers, with and without an aluminum film coating are compared to the output of a collimated CdTe solid state detector over an energy range from 10 to 40 keV. The photon count results show significant variations in the fiber output based on the materials. The alkali halide fiber output can exceed that of the CdTe detector, dependent upon photon counter efficiency and fiber configuration. The results and associated materials difference are discussed.
Document ID
20160005925
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
DeHaven, S. L. (NASA Langley Research Center Hampton, VA, United States)
Wincheski, R. A. (NASA Langley Research Center Hampton, VA, United States)