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Understanding Neutron Radiography Post Exam Reading VIII-Part 2a of 2A

Understanding Neutron Radiography Post Exam Reading VIII-Part 2a of 2A

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System Electronics<br />

Once the output pulse from a photomultiplier tube is generated, it is amplified<br />

and analyzed. The pulse height, or amplitude, is proportional to the amount <strong>of</strong><br />

energy deposited within the scintillator and can be correlated to a count rate<br />

or scale <strong>of</strong> microsievert per second (μSv·s –1 ) or milliroentgen per hour<br />

(mR·h –1 ) when calibrated against a known energy source. (See Fig. 18.)<br />

Charlie Chong/ Fion Zhang

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