Ion-Optical System of an Ion Source with Energy Focusing in the Formed Beam
- Authors: Samsonova N.S.1, Gall’ N.R.1, Gall’ L.N.2, Averin I.A.2, Berdnikov A.S.2, Masyukevich S.V.2
- 
							Affiliations: 
							- Ioffe Institute
- Institute of Analytical Instrumentation, Russian Academy of Sciences
 
- Issue: Vol 64, No 4 (2019)
- Pages: 564-568
- Section: Electrophysics, Electron and Ion Beams, Physics of Accelerators
- URL: https://journals.rcsi.science/1063-7842/article/view/203321
- DOI: https://doi.org/10.1134/S1063784219040042
- ID: 203321
Cite item
Abstract
Ways to reduce ion beam intensity losses in a mass spectrometric ion source, which are caused by chromatic aberration of its immersion ion-optical system, are considered. These losses are rather significant in forming a beam from ions with a large energy spread. The reduction of aberration losses is especially important when ion sources are used jointly with mass analyzers with energy focusing. It is shown that these losses can be reduced significantly by using a new type of ion-optical system of the ion source, which includes achromatic elements. A special method for calculating such elements is given. Computer simulations have shown high efficiency of such elements in the ion-optical path of ion sources of mass spectrometers.
About the authors
N. S. Samsonova
Ioffe Institute
														Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 194021						
N. R. Gall’
Ioffe Institute
														Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 194021						
L. N. Gall’
Institute of Analytical Instrumentation, Russian Academy of Sciences
														Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 190103						
I. A. Averin
Institute of Analytical Instrumentation, Russian Academy of Sciences
							Author for correspondence.
							Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 190103						
A. S. Berdnikov
Institute of Analytical Instrumentation, Russian Academy of Sciences
														Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 190103						
S. V. Masyukevich
Institute of Analytical Instrumentation, Russian Academy of Sciences
														Email: agreer@bk.ru
				                					                																			                												                	Russian Federation, 							St. Petersburg, 190103						
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