View in EDS

A Penning sputter ion source with very low energy spread

Saved in:
Bibliographic Details
Title: A Penning sputter ion source with very low energy spread
Authors: Nouri, Z.1 znouri@uwo.ca, Li, R.2 ruohong@triumf.ca, Holt, R.A.1 rholt@uwo.ca, Rosner, S.D.1 rosner@uwo.ca
Source: Nuclear Instruments & Methods in Physics Research Section A. Mar2010, Vol. 614 Issue 2, p174-178. 5p.
Subjects: Sputtering (Physics), Ion sources, Nuclear energy, Ion bombardment, High pressure (Science), Magnetic fields, Fluorescence spectroscopy, Particle accelerators
Abstract: Abstract: We have developed a version of the Frankfurt Penning ion source that produces ion beams with very low energy spreads of ∼3eV, while operating in a new discharge mode characterized by very high pressure, low voltage, and high current. The extracted ions also comprise substantial metastable and doubly charged species. Detailed studies of the operating parameters of the source showed that careful adjustment of the magnetic field and gas pressure is critical to achieving optimum performance. We used a laser-fluorescence method of energy analysis to characterize the properties of the extracted ion beam with a resolving power of 1×104, and to measure the absolute ion beam energy to an accuracy of 4eV in order to provide some insight into the distribution of plasma potential within the ion source. This characterization method is widely applicable to accelerator beams, though not universal. The low energy spread, coupled with the ability to produce intense ion beams from almost any gas or conducting solid, make this source very useful for high-resolution spectroscopic measurements on fast-ion beams. [Copyright &y& Elsevier]
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Abstract: We have developed a version of the Frankfurt Penning ion source that produces ion beams with very low energy spreads of ∼3eV, while operating in a new discharge mode characterized by very high pressure, low voltage, and high current. The extracted ions also comprise substantial metastable and doubly charged species. Detailed studies of the operating parameters of the source showed that careful adjustment of the magnetic field and gas pressure is critical to achieving optimum performance. We used a laser-fluorescence method of energy analysis to characterize the properties of the extracted ion beam with a resolving power of 1×104, and to measure the absolute ion beam energy to an accuracy of 4eV in order to provide some insight into the distribution of plasma potential within the ion source. This characterization method is widely applicable to accelerator beams, though not universal. The low energy spread, coupled with the ability to produce intense ion beams from almost any gas or conducting solid, make this source very useful for high-resolution spectroscopic measurements on fast-ion beams. [Copyright &y& Elsevier]
ISSN:01689002
DOI:10.1016/j.nima.2009.12.060