A Portable High Resolution Compton Backscatter Scanning Instrument
Abstract
Model LBD101 Compton Backscatter Scanning Instrument is developed and manufactured by LAMBEAU for industrial field NDT and NDE and security inspection from one side of the object being inspected. The novel instrument uses a very simple and compact one source and one detector system geometry. The superior specifications of the LBD101 includes: the best spatial resolution of better than 0.8 mm, the best density resolution of about 1%, the minimum detectable defect volume of less than 0.6 mm 3, the minimum defect size of less than Φ 0.8 mm, the minimum crack width of less than 0.15 mm. It has the high safety of radiation protection and very low radiation dose rate. Several main technical problems to design a portable high resolution Compton backscatter scanning instrument are given in the paper. It gives also some results in practical testing.
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