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 5
SDSS sample used in the transmission measurements conducted on the IMAT beamline at ISIS, (a) viewed perpendicular to the beam direction and (b) viewed along the beam direction. The dimensions of the SDSS sample (length of gauge, thickness, width = 25 × 8 × 3 mm) and the sample-to-detector distance (20 mm), as determined from Monte Carlo simulations, are indicated. Two PE sheets were attached to one surface of the SDSS sample using aluminium tape, to mimic known hydrogen concentrations, as shown in the enlarged image inset in panel (a). Neutron-absorbing cadmium markers were placed on the sides of the sample to aid subsequent image analysis. Not shown is that the entire sample was rotated by 180° for an additional measurement, placing the PE layers on the side facing the detector.

IUCrJ

Volume 13| Part 6| November 2026|

ISSN: 2052-2525

https://doi.org/10.1107/S2052252526008882

NEUTRON | SYNCHROTRON

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