Figure 3: Neutron transmission spectra measured for four gold samples.

Symbols are measured data points, solid lines represent theoretical transmission curves calculated from tabulated attenuation cross sections. (a) Full spectra showing strong absorption of gold samples in the thermal range of neutron energies (<50 meV). The inserts are full-spectrum transmission images of the gold samples and yellow lines indicate the areas over which transmission spectra were integrated. (b) Neutron transmission spectra measured in the epithermal range of energies, indicating the presence of Pd resonances for samples N2 and N3. The legends indicate the atomic percentage concentration of Pd and Au in the samples, obtained by the fit of the calculated spectra to the measured transmission.