Progress in instrumenting the nitrogen/carbon cameras

摘要

We have imaged in the laboratory elemental nitrogen/carbon concentrations by inducing ~(14)N ( #gamma#, 2p)~(12)B, ~(14)N( #gamma# , 2n) ~(12)N, and ~(13)C( #gamma# ,p)~(12)B reactions and detecting resulting #gamma# -rays with energies above approx 1 MeV during a approx 5 to 40 ms interval after irradiation. We are now developing instrumentation with which to capture these images in field deployable Nitrogen and Carbon Cameras. Here we describe our progress in developing suitable light sources (compact, mobile 70 MeV electron accelerators), detector materials (brigth, dense, rugged scintillators and large, room temperature semiconductors), and arrays of detectors (densely packed, durable, and automated.)