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Table 2 Varying measurement parameters of MA-XRF analysis chosen for different scans

From: Visualising iron gall ink underdrawings in sixteenth century paintings in-situ by micro-XRF scanning (MA-XRF) and LED-excited IRR (LEDE-IRR)

Inv. No.

Scan

Localisation

Step size

Dwell time

HM 6

Overall 1–2

Lower part of the panel

375 µm

25 ms/pixel

 

Detail 1

Head of Jesse

305 µm

3.04a ms/pixel

 

Detail 1

Head of Jesse

305 µm

10 ms/pixel

 

Detail 1

Head of Jesse

305 µm

50 ms/pixel

 

Detail 1

Head of Jesse

305 µm

100 ms/pixel

 

Detail 2

King David

305 µm

250 ms/pixel

HM 15

Overall 1

Lower left part of the panel

375 µm

25 ms/pixel

852

Overall 1

Overall

375 µm

25 ms/pixel

 

Detail 1

Dress of the Virgin

305 µm

100 ms/pixel

  1. aFastest scan time possible