Quantification in wavelength-resolved neutron imaging: exemplified using polyethylene to mimic hydrogen in stainless steel

Xu, S.; Chulapakorn, T.; Dahlberg, C.F.O.; Damian, J.I.M.; Liu, M.; DiJulio, D.D.; Kittelmann, T.; Losko, A.; Athanasopoulos, S.; Pan, J.; Larsson, A.; Muhrer, G.; Kockelmann, W.; Ramadhan, R.S.; Wolfertz, A.; Woracek, R.

doi:10.1107/S2052252526008882

Figure 3
Comparison of simulated and theoretical transmission spectra (solid black lines) for 8 mm thick SDSS and PE across Cases 1, 2 and 3. Results indicate that sample-to-detector distances of 50 cm, 5 cm and 2 cm are required to mitigate forward-scattering artefacts for Cases 1, 2 and 3, respectively. In contrast, PE – a material with a high hydrogen content – requires significantly larger distances (150 cm, 15 cm and 5 cm) to eliminate these impacts. Additional spectra for other materials are provided in Figs. 13 and 14 in Appendix A

IUCrJ

Volume 13| Part 6| November 2026|

ISSN: 2052-2525

https://doi.org/10.1107/S2052252526008882

NEUTRON | SYNCHROTRON

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