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The Lund Nuclear Microprobe sub-micron set-up. Part I: Ion optics calculation

Shariff, Asad LU ; Auzelyte, Vaida LU ; Elfman, Mikael LU ; Kristiansson, Per LU ; Malmqvist, Klas LU ; Nilsson, Christer LU ; Pallon, Jan LU and Wegdén, Marie LU (2005) In Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms 231(1-4). p.1-6
Abstract
A new beam line for generating a sub-micron beam spot for high-resolution nuclear microprobe applications has been constructed at the Lund nuclear microprobe facility. In this paper, the first in a series of three, a detailed theoretical investigation of different focusing systems is presented based on calculations performed with the computer programs PRAM and OXTRACE. Comparison is made between a doublet, a triplet, a quadruplet and a split quadruplet (two-stage focusing). For the split quadruplet all four quadrupole magnets were uncoupled. The conclusion from the calculations was that to obtain the smallest possible beam, the two-stage focusing system should be used. Such a focusing system (a doublet at each stage) has been chosen for... (More)
A new beam line for generating a sub-micron beam spot for high-resolution nuclear microprobe applications has been constructed at the Lund nuclear microprobe facility. In this paper, the first in a series of three, a detailed theoretical investigation of different focusing systems is presented based on calculations performed with the computer programs PRAM and OXTRACE. Comparison is made between a doublet, a triplet, a quadruplet and a split quadruplet (two-stage focusing). For the split quadruplet all four quadrupole magnets were uncoupled. The conclusion from the calculations was that to obtain the smallest possible beam, the two-stage focusing system should be used. Such a focusing system (a doublet at each stage) has been chosen for the new sub-micron set-up at the Lund NMP laboratory. The first stage focuses the beam in an intermediate chamber, which has a high-resolution optical viewing system facilitating more control over the beam spot. This real image of the first stage is then used as a virtual object for the second stage. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
PRAM, ion optics, OXTRACE, nuclear microprobe, sub-micron beam
in
Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
volume
231
issue
1-4
pages
1 - 6
publisher
Elsevier
external identifiers
  • wos:000229752400002
  • scopus:33644550655
ISSN
0168-583X
DOI
10.1016/j.nimb.2005.01.026
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007)
id
43789ea3-af5f-471b-b252-a580298ebd57 (old id 236012)
date added to LUP
2016-04-01 16:04:14
date last changed
2022-01-28 17:06:16
@article{43789ea3-af5f-471b-b252-a580298ebd57,
  abstract     = {{A new beam line for generating a sub-micron beam spot for high-resolution nuclear microprobe applications has been constructed at the Lund nuclear microprobe facility. In this paper, the first in a series of three, a detailed theoretical investigation of different focusing systems is presented based on calculations performed with the computer programs PRAM and OXTRACE. Comparison is made between a doublet, a triplet, a quadruplet and a split quadruplet (two-stage focusing). For the split quadruplet all four quadrupole magnets were uncoupled. The conclusion from the calculations was that to obtain the smallest possible beam, the two-stage focusing system should be used. Such a focusing system (a doublet at each stage) has been chosen for the new sub-micron set-up at the Lund NMP laboratory. The first stage focuses the beam in an intermediate chamber, which has a high-resolution optical viewing system facilitating more control over the beam spot. This real image of the first stage is then used as a virtual object for the second stage.}},
  author       = {{Shariff, Asad and Auzelyte, Vaida and Elfman, Mikael and Kristiansson, Per and Malmqvist, Klas and Nilsson, Christer and Pallon, Jan and Wegdén, Marie}},
  issn         = {{0168-583X}},
  keywords     = {{PRAM; ion optics; OXTRACE; nuclear microprobe; sub-micron beam}},
  language     = {{eng}},
  number       = {{1-4}},
  pages        = {{1--6}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms}},
  title        = {{The Lund Nuclear Microprobe sub-micron set-up. Part I: Ion optics calculation}},
  url          = {{http://dx.doi.org/10.1016/j.nimb.2005.01.026}},
  doi          = {{10.1016/j.nimb.2005.01.026}},
  volume       = {{231}},
  year         = {{2005}},
}