The Lund Nuclear Microprobe sub-micron set-up. Part I: Ion optics calculation
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/236012
- author
- 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
- organization
- publishing date
- 2005
- 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}}, }