Abstract
Recently, 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 radio frequency cavities treated by GCIB will be discussed. First experimental results on Nb single cell superconducting radio frequency cavities treated by GCIB will be reported.
| Original language | English |
|---|---|
| Article number | 093504 |
| Journal | Physical Review Special Topics - Accelerators and Beams |
| Volume | 13 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2010 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Surfaces and Interfaces
- Nuclear and High Energy Physics
Cite this
Modification on surface oxide layer structure and surface morphology of niobium by gas cluster ion beam treatments. / Wu, A. T.; Swenson, D. R.; Insepov, Z.
In: Physical Review Special Topics - Accelerators and Beams, Vol. 13, No. 9, 093504, 2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modification on surface oxide layer structure and surface morphology of niobium by gas cluster ion beam treatments
AU - Wu, A. T.
AU - Swenson, D. R.
AU - Insepov, Z.
PY - 2010
Y1 - 2010
N2 - Recently, 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 radio frequency cavities treated by GCIB will be discussed. First experimental results on Nb single cell superconducting radio frequency cavities treated by GCIB will be reported.
AB - Recently, 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 radio frequency cavities treated by GCIB will be discussed. First experimental results on Nb single cell superconducting radio frequency cavities treated by GCIB will be reported.
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UR - http://www.scopus.com/inward/citedby.url?scp=77957365313&partnerID=8YFLogxK
U2 - 10.1103/PhysRevSTAB.13.093504
DO - 10.1103/PhysRevSTAB.13.093504
M3 - Article
VL - 13
JO - Physical Review Special Topics - Accelerators and Beams
JF - Physical Review Special Topics - Accelerators and Beams
SN - 1098-4402
IS - 9
M1 - 093504
ER -