The sputter-generation of negative ion beams: Analytical modeling
نویسندگان
چکیده
منابع مشابه
A pulsed sputter negative ion source
2014 A pulsed source for Cs-ions has been constructed as part of a sputter ion source in Hortig geometry. A beam of Cs-ions is extracted from a tungsten surface ionizer and bunched into pulses a few ns wide by a combination of velocity and path-of-flight modulation. It is expected that such a beam will produce intense pulses of negative ions having pulse widths in the ns range. REVUE DE PHYSIQU...
متن کاملNew Cs sputter ion source with polyatomic ion beams for secondary ion mass spectrometry applications.
A simple design for a cesium sputter ion source compatible with vacuum and ion-optical systems as well as with electronics of the commercially available Cameca IMS-4f instrument is reported. This ion source has been tested with the cluster primary ions of Si(n)(-) and Cu(n)(-). Our experiments with surface characterization and depth profiling conducted to date demonstrate improvements of the an...
متن کاملCollisional Cooling of Negative Ion Beams
Managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. Abstract Investigations have been conducted to determine the feasibility of using collisional cooling for reducing the energy spreads and, consequently, the emittances of negative-ion beams. We have designed a gas-filled RFquadrupole ion cooler equipped with provisions for retarding energetic nega...
متن کاملIon-Source Modeling and Improved Performance of the CAMS High-Intensity Cs-Sputter Ion Source
The interior of the high-intensity Cs-sputter source used in routine operations at the Center for Accelerator Mass Spectrometry (CAMS) has been computer modeled using the program NEDLab, with the aim of improving negative ion output. Space charge effects on ion trajectories within the source were modeled through a successive iteration process involving the calculation of ion trajectories throug...
متن کاملSputter-ion Pumps
The following paper outlines the working principles of sputter-ion pumps. The pumping mechanisms for reactive and inert gas species, as well as argon instability are explained. The operating pressure range, special designs for integrated linear pumps in accelerators and operational aspects are discussed.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 1989
ISSN: 0168-583X
DOI: 10.1016/0168-583x(89)90985-3