Comparison between experimental and simulated results of ToF spectra from the polyethylene sample (IMAGE)
Caption
This figure compares the time-of-flight (ToF) spectra from a polyethylene benchmark sample measured using the CIAE integral experiment system, with corresponding Monte Carlo simulations based on ENDF/B-VIII.0 nuclear data. Polyethylene, with its well-understood n-p scattering cross-sections, serves as a calibration standard to verify the accuracy of neutron yield normalization and detector efficiency. The strong agreement in both spectral shape and count ratios (C/E ≈ 1) in the n-p peak region validates the reliability of the experimental setup, including its pulse-shape discrimination and timing resolution. This foundational verification ensures the credibility of subsequent measurements on natPb samples.
Credit
Yang-Bo Nie
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License
CC BY-NC