Modification on surface oxide layer structure and surface morphology of niobium by gas cluster ion beam treatments

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dc.contributor.authorWu, A. T.
dc.contributor.authorSwenson, D. R.
dc.contributor.authorInsepov, Z.
dc.date.accessioned2017-09-27T05:45:13Z
dc.date.available2017-09-27T05:45:13Z
dc.date.issued2010
dc.description.abstractRecently, it was demonstrated that significant reductions in field emission on Nb surfaces could be achieved by means of a new surface treatment technique called gas cluster ion beam (GCIB). Further study as shown in this paper revealed that GCIB treatments could modify surface irregularities and remove surface asperities leading to a smoother surface finish as demonstrated through measurements using a 3D profilometer, an atomic force microscope, and a scanning electron microscope. These experimental observations were supported by computer simulation via atomistic molecular dynamics and a phenomenological surface dynamics. Measurements employing a secondary ion mass spectrometry found that GCIB could also alter Nb surface oxide layer structure. Possible implications of the experimental results on the performance of Nb superconducting radiofrequency cavities treated by GCIB will be discussed. First experimental results on Nb single-cell superconducting radiofrequency cavities treated by GCIB will be reported.ru_RU
dc.identifier.citationWu, A. T., Swenson, D. R., & Insepov, Z. (2010). Modification on surface oxide layer structure and surface morphology of niobium by gas cluster ion beam treatments. Physical Review Special Topics-Accelerators and Beams, 13(9), 093504.ru_RU
dc.identifier.urihttp://nur.nu.edu.kz/handle/123456789/2719
dc.language.isoenru_RU
dc.publisherPhysical Review Special Topics-Accelerators and Beamsru_RU
dc.rightsOpen Access - the content is available to the general publicru_RU
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectsurface oxide layerru_RU
dc.subjectniobiumru_RU
dc.subjection beam treatmentru_RU
dc.titleModification on surface oxide layer structure and surface morphology of niobium by gas cluster ion beam treatmentsru_RU
dc.typeArticleru_RU

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