Doublet Separations #

Nb 3d = 2.78 eV

Nb 3p = 15.5 eV

Nb 4p = 1.8 eV

Common Overlaps for Nb 3d #

Cl 2p – Ce 4p – La 4p – As 3s – Lu 4d – Xe 4s – At 4f – Kr 3p – Rn 5s – Hf 4d – Ac 5p

Auger Energies #

Note – these are listed in KINETIC ENERGY

Nb MNV ≈ 168 eV

Nb LMM ≈ 1940 eV (Needs HAXPES)

Common Binding Energies – Nb 3d #

Theory and Background #

Niobium (Nb) is a transition metal known for its exceptional properties, making it important in various industrial and scientific applications. It is widely used in alloy production, especially in superalloys, where it enhances strength, corrosion resistance, and heat resistance. Niobium is commonly found in the production of stainless steel, titanium alloys, and aerospace components. Its ability to form stable niobium oxide (Nb₂O₅) also makes it valuable in electronic capacitors, particularly in high-performance capacitors used in telecommunications, computing, and automotive systems. Niobium is also utilized in superconducting magnets for medical imaging (MRI) and particle accelerators, owing to its superconducting properties when cooled to low temperatures. Additionally, niobium plays a key role in pharmaceuticals and nuclear applications, where it is used as a corrosion-resistant material.

Experimental Advice #

Cl 2p can be a significant overlap with Nb 3d, though this is primarily problematic for Nb metal, the shift in Nb oxides should enable facile deconvolution of any overlap, though care should be taken to record a large enough region to apply suitable backgrounds during analysis.

Data Analysis Guidance #

Niobium metal exhibits asymmetric peaks, and slightly broadened Nb 3d 3/2 peaks due to Coster-Kronig broadening.

Reference Datasets #

Coming soon

References #