Ca2p 峰具有明显的自旋轨道分裂峰 (Δ 碳酸盐 =3.5 eV)。 在 Ca2p 区域有时可见卫星能量损失特征峰。 例如，对于 CaCO 3，可以观察到较强的卫星峰，但是对于磷酸钙，卫星峰就比较弱。 作为一种反应活性较高的金属，钙基本上以化合物的形式存在。 长时间暴露于 X 射线下，CaCO 3 可能会降解，生成 CaO+CO 2。 氧化钙或氢氧化钙等钙化合物可能与大气中的 CO 2 发生反应，形成碳酸盐。 H. Davy 于1808年首次分离出钙。 钙是地壳中含量第五丰富的元素，是活生物体细胞 …

Calcium X-ray photoelectron spectra, calcium electron configuration, and other elemental information. Charge referenced to adventitious C1s peak at 284.8eV. In the presence of a significant magnesium concentration, collect Ca2s as well as Ca2p region. In the presence of magnesium, check for Ca2s to prevent misinterpreting Mg KLL as Ca2p.

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For the ZnO-doped CaO samples, XPS core levels of Ca 2p can be deconvoluted into four parts, corresponding to Ca 2p3/2 and Ca 2p1/2 in CaO (Ca 2p ½ BE ≈ 346.0 eV and Ca 2p 3/2 BE ≈ 350.2 eV...

X-ray photoelectron spectroscopy (XPS or ESCA) curve fitting procedures, reference materials and useful notes are listed here to provide a starting point for the consistent interpretation of XPS spectra. These reference pages contain tips and techniques that are designed to help both the novice and advanced XPS user.

1995年12月1日 · X-Ray Photoelectron Spectroscopy (XPS) photoemission lines of some calcium compounds have been measured. The fine structure and position of the Ca 2 p 3 2 line is discussed. The Wagner diagram of the oxygen KLL transitions is presented. The surface composition of some compounds is calculated.

Ca2p peak has clearly spaced spin-orbit components (Δ carbonate =3.5eV). Satellite loss features are sometimes observed in the Ca2p region. Reasonably strong satellites are observed for CaCO 3 , for example, but only weak satellites for tribasic calcium phosphate.

2008年10月1日 · Two surface analysis techniques, X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectroscopy (TOF-SIMS), were used to differentiate the surfaces of these three...

XPS Spectra Calcium (Ca) Compounds The XPS Spectra section provides raw and processed survey spectra, chemical state spectra, BE values, FWHM values, and overlays of key spectra. Atom% values from surveys are based on sample, as received, and Scofield cross-sections. Atom% values are corrected for IMFP and PE.

Interpretation of XPS spectra In presence of magnesium, check for Ca2s to prevent misinterpreting Mg KLL as Ca2p. There is only a small range of Ca 2p chemical shifts (<1eV) for typical compounds.