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. 2014 Jun 16;4:5308. doi: 10.1038/srep05308

Figure 4. Detection of bilayer solid powders Ammonium nitrate (AN) and t-Stilbene (TS) packed in commercial HDPE container using UMARS at various incident beam locations.

Figure 4

(a) At the interface of the layers, (b) Beam incident on AN, and (c) Beam incident on TS. Note that the signal from the container wall is insignificant. Spectral acquisition time 200 s.