Demonstrated Wavelength Portability of Raman Reference Data for Explosives and Chemical Detection

Figure 6

Spectral search example of one of the few false hits showing hair gel at 785 nm with petroleum jelly (1064) as its top hit and hair gel (1064) as its second hit. The distance between the top two hits is more than 60 (with a distance of 77) and the top hit is above 775 so it is declared a match. These spectra are all scaled 0–2 on the 𝑦-axis and have been vertically offset for clarity.