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. Author manuscript; available in PMC: 2022 May 6.
Published in final edited form as: J Appl Phys. 2012;112(10):10.1063/1.4767118. doi: 10.1063/1.4767118

FIG. 3.

FIG. 3.

(a) Aluminum cuvette used to measure the attenuation of neutrons by water. A lid is secured to provide a leak tight fit. The step depths are measured optically with an accuracy of ±1 μm. (b) The measured optical density as a function of step thickness. The fit parameters are Σw = (0.38483 ± 0.00025) mm−1 and βw = (−0.00947 ± 0.00015) mm−2 with a reduced χ2 = 1.3.