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Calibrating a portable neutron flux monitor

Illustration of the four-stage process developed by NIST for measuring neutron flux.

Illustration of the four-stage process developed by NIST for measuring neutron flux. From left to right, starting in the top corner: Step 1 – An extremely well characterized radiation source is placed in the alpha-gamma device. Step 2 – A controlled beam of neutrons passes through the device, striking a thin target. Step 3 – The thin target is replaced by a thick target that absorbs all incident neutrons. Step 4 – The flux-rate measurements are used to calibrate a portable monitor.

May 2018 • NIST • https://www.nist.gov/news-events/news/2018/05/neutrons-numbers • Tagged: Illustration, Diagrams