XPS Binding Energy Difference Calculator

Compute chemical shifts and peak to peak separations with robust uncertainty math calibration offsets and reference alignment. Enter energies and errors choose signed or absolute difference and get clean results with formulas notes and export. Designed for researchers engineers and students working in surface science and materials characterization with reliable reporting and quick checks.

Inputs
Example 84.0000
Example 87.7000
Apply a differential offset only to Peak A
Apply a differential offset only to Peak B
-1 to 1. Use 0 if independent.
If on, |ΔE| is reported.
e.g., observed C 1s
e.g., 284.8 eV
Computed common shift: 0.0000 eV This shift is added to both peaks and therefore cancels out in ΔE.
Results
  • Peak A corrected (eV) 84.0000
  • Peak B corrected (eV) 87.7000
  • Difference ΔE (B - A) (eV) 3.7000
  • Standard uncertainty u(ΔE) (eV) ± 0.0700
  • Approx. 95% CI (eV) ± 0.1372
Formulae
ΔE = EB - EA
Ei,corr = Ei + δi + Sref
u(ΔE) = √(uA2 + uB2 - 2ρ uAuB)
Note The common reference shift Sref cancels in the difference.
What is LXPS Binding Energy

LXPS binding energy describes the energy needed to remove a core level electron measured by laboratory X ray photoelectron spectroscopy. It reflects element identity chemical state and local bonding. Peaks appear at characteristic energies referenced to a standard such as the Fermi level or adventitious carbon. Accurate values require calibration charge correction and careful background subtraction instrument drift control procedures.

FAQs

The calculator subtracts one corrected peak energy from the other according to your selection. You can also report the absolute magnitude if sign is not important.

No. A shift added equally to both peaks cancels out in the difference. It still updates the displayed corrected peak values.

The standard uncertainty of the difference uses u(ΔE) = √(uA² + uB² − 2ρuAuB). Set ρ to zero if the peak fits are independent.

Use absolute difference when only the magnitude of the separation matters for example when comparing to tabulated spin orbit splittings.

If both peaks were fitted in the same spectrum with shared constraints ρ may be positive. If they were fitted independently ρ is often near zero.

Yes. Use the extra correction fields δA and δB to apply differential offsets such as model constraints or sample tilt effects.

A negative result simply reflects the order you chose. Switch the direction selector or enable absolute difference if sign is not meaningful for your analysis.
Tips
  • Use enough significant digits to avoid rounding bias.
  • Include background and lineshape uncertainty in u for each peak.
  • Report both ΔE and u(ΔE) when publishing.
  • Reference alignment is still useful to display corrected peaks.
Share

Related Calculators

Mole-Mass Converter Calculator
Percent Composition Calculator
Molality from Mass Calculator
Equilibrium Constant Calculator
Graham's Law Diffusion Calculator

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.