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Fig. 3 | Heritage Science

Fig. 3

From: Disclosing Jackson Pollock’s palette in Alchemy (1947) by non-invasive spectroscopies

Fig. 3

Details of the visible image and spectral features of paints denoted as red1 and red2. a UV–Vis-NIR emission spectra (λex = 445 nm); b FTIR spectra compared with the reference spectrum of PR3 (the rectangle evidences the small signals possibly related to an organic dye on red2); c Raman spectra (λexc = 785 nm) compared with the reference spectrum of PR3 (the Raman spectrum recorded from the PR3 standard was acquired with a portable device having a lower spectral resolution with respect to the system here employed, the laser excitation line is 785 nm); d UV–Vis-NIR reflectance spectra and e XRF spectrum representative of red2

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