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High pressure xenon electronically collimated camera for low energy gamma ray imaging

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7 Author(s)
Bolozdynya, A.I. ; Dept. of Med. Phys., Rush-Presbyterian-St. Luke''s Med. Center, Chicago, IL, USA ; Egorov, V.V. ; Koutchenkov, A.V. ; Safronov, G.A.
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A high pressure xenon scintillation drift chamber with 30 cm diameter field of view has been built and tested as a two-dimensional imaging camera for low energy γ-rays. Experiments demonstrate that the camera can be also operated in an electronically collimated mode as a three-dimensional imaging Compton camera. A spatial resolution of 25 mm is measured for a 140 keV point-like source placed 10.5 cm in front of the camera without any collimator. The resolution is limited by the intrinsic resolution of the 19 channel readout system which is based on 80 mm diameter phototubes. A way to improve the imaging performance is discussed

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Nuclear Science, IEEE Transactions on  (Volume:44 ,  Issue: 6 )