Comparison of Background Types

 

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Comparison of Background Types

Linear Background versus Shirley Background (no iteration) versus Iterated Shirley Background versus

Sherwood Background versus Tougaard Background  versus Vegh-Castle-Salvi Background

 

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2 parameter Tougaard versus Iterated Shirley – Raw Spectra of natural crystal of Fe2O3 (Hematite)

Fe (3p) – Fe (3s) spectrum

 

 

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Raw Ti (2p) Spectrum without a Background – Vertically Zoomed – Peaks above BE=467 eV are probably Intrinsic satellites

 

 

Shirley Background:  Not Iterated versus Two (2) Iterations

 

 

 

Linear Background – Includes two (2) satellites above BE=467 eV that are either shake-up or multiplet-splitting structures

 

Linear Background – Vertically Zoomed – includes satellite structures

 

 

Single (1) Iteration of Shirley Background – includes satellites

 

 

Linear Background versus Iterated Shirley Background – Same Endpoints – Which background is more useful or correct?

 

 

Linear Background versus Iterated Shirley Background – VERTICALLY ZOOMED to reveal usefulness of endpoints selected

 

 

 

Iterated Shirley Background – Limited to Two (2) Main Peaks – Ignoring satellite structures at higher BE – Useful ?

 

 

Linear Background – Limited to Two (2) Main Peaks – Ignoring satellite structures at higher BE – Useful?