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Defect model for the dependence of breakdown rate on external electric fields

Author:
Nordlund, K.   Djurabekova, F.  


Journal:
Physical Review Special Topics - Accelerators and Beams


Issue Date:
2012


Abstract(summary):

We develop an analytical model for the vacuum electric breakdown rate dependence on an external electric field, observed in test components for the compact linear collider concept. The model is based on a thermodynamic consideration of the effect of an external electric field on the formation enthalpy of defects. Although strictly speaking only valid for electric fields, the model also reproduces very well the breakdown rate of a wide range of radio-frequency breakdown experimental data. We further show that the fitting parameter in the model can be interpreted to be the relaxation volume of dislocation loops in materials. The values obtained for the volume are consistent with dislocation loops with radii of a few tens of nanometers.


Page:
071002


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