There's some pretty major uncertainty in the MAC for Si Ka in Eu according to the tables in CalcZAF:

`MAC value for Si ka in Eu = 3524.53 (LINEMU Henke (LBL, 1985) < 10KeV / CITZMU > 10KeV)`

MAC value for Si ka in Eu = 4627.80 (CITZMU Heinrich (1966) and Henke and Ebisu (1974))

MAC value for Si ka in Eu = 5714.24 (MCMASTER McMaster (LLL, 1969) (modified by Rivers))

MAC value for Si ka in Eu = 4280.05 (MAC30 Heinrich (Fit to Goldstein tables, 1987))

MAC value for Si ka in Eu = 4628.93 (MACJTA Armstrong (FRAME equations, 1992))

MAC value for Si ka in Eu = 4110.83 (FFAST Chantler (NIST v 2.1, 2005))

Edit to add, the Pd La in Eu MAC is pretty uncertain, too!

`MAC value for Pd La in Eu = 1190.30 (LINEMU Henke (LBL, 1985) < 10KeV / CITZMU > 10KeV)`

MAC value for Pd La in Eu = 1503.30 (CITZMU Heinrich (1966) and Henke and Ebisu (1974))

MAC value for Pd La in Eu = 1687.39 (MCMASTER McMaster (LLL, 1969) (modified by Rivers))

MAC value for Pd La in Eu = 1569.85 (MAC30 Heinrich (Fit to Goldstein tables, 1987))

MAC value for Pd La in Eu = 1503.67 (MACJTA Armstrong (FRAME equations, 1992))

MAC value for Pd La in Eu = 1395.47 (FFAST Chantler (NIST v 2.1, 2005))