Author: Ford, D.C.
Paper Title Page
MOIOC03
 Density-Functional Theory Calculations Relevant to Hydride Formation and Prevention  
 
  • D.C. Ford
    Fermilab, Batavia, USA
  
  Chemical impurities such as hydrogen, oxygen, nitrogen, and carbon atoms can be absorbed into niobium during processing treatments applied to SRF cavities and affect the performance of the cavities. These impurities may reside in niobium lattice interstices and lower the superconducting transition temperature of the niobium or form precipitates with properties that differ from niobium. Of particular concern is the formation of hydride precipitates which may be relevant to Q-disease and Q-slope. A first principles approach is taken to study the properties of chemical impurities in niobium, with particular focus given to the prevention of detrimental niobium hydride precipitation.  
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