Zobrazeno 1 - 10
of 37
pro vyhledávání: '"David Richard Swenson"'
Autor:
Steve Korbly, David Richard Swenson, Robert J. Ledoux, William Bertozzi, Alexei V. Klimenko, W. Franklin, Rustam Niyazov
Publikováno v:
International Journal of Modern Physics A. 26:1713-1735
Publikováno v:
Vacuum. 82:872-879
Surface erosion and modification by energetic highly charged and cluster ions are important in the development of semiconductor devices, TeV accelerators, fission and fusion reactors, and in the development of extreme ultra-violet lithography devices
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 261:664-668
The gas cluster ion beam (GCIB) treatment can be an important treatment for mitigation of the Q-slope in superconducting cavities. The existing surface smoothening methods were analyzed and a new surface polishing method was proposed based on employi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 258:172-177
Surface erosion problems common in the development of TeV accelerators and of the extreme ultra-violet lithography (EUVL) devices have been reviewed. The gas cluster ion beam (GCIB) surface smoothing technique can mitigate them. It has recently been
Publikováno v:
Physica C: Superconductivity. 441:75-78
Surface processing with high-energy gas cluster ion beams (GCIB) is investigated for increasing the high voltage breakdown strength of RF cavities and electrodes in general. Various GCIB treatments were studied for Nb, Cu, Stainless Steel and Ti elec
Publikováno v:
Physica C: Superconductivity. 441:114-117
Niobium surface modification dynamics treated by cluster ion irradiation was studied based on atomistic and mesoscopic simulation methods and the results were compared to experiments. A surface smoothening method was proposed consisting of a treatmen
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:641-644
Many studies have demonstrated that improving the surface smoothness and cleanliness of high voltage electrodes increases the voltage standoff capability, but none have specifically investigated the role of nano-scale and atomic level surface roughne
Autor:
David Richard Swenson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:599-603
In a previous study averages of +3.2charges, 64 keV energy and 10,400 atoms were measured for a high intensity Ar gas cluster ion beam [D.R. Swenson, Nucl. Instr. and Meth. B 222 (2004) 61]. At this energy multiple collisions with Ar gas atoms are ob
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:496-500
Interactions of energetic ions with various solid targets including silicon and a few metal surfaces were studied by computer simulation and verified by experiment. Surface sputtering and modification for collisions of Arn (n ∼ 100) cluster ions, w
Autor:
David Richard Swenson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 222:61-67
A new technique is described that has allowed the first measurements of the averages of charge, energy and mass of large, multiply charged, gas clusters. The technique is used to investigate cluster–gas collisions. For this study, a beam with avera