Refractive and diffractive neutron optics with reduced chromatic aberration
(2014) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 767. p.415-420- Abstract
- Thermal neutron beams are an indispensable tool in physics research. The spatial and the temporal resolution attainable in experiments are dependent on the flux and collimation of the neutron beam which remain relatively poor, even for modern neutron sources. These difficulties may be mitigated by the use of optics for focusing and imaging. Refractive and diffractive optical elements, e.g. compound refractive lenses and Fresnel zone plates, are attractive due to their low cost, and simple alignment. These optical elements, however, suffer from chromatic aberration, which limit their effectiveness to highly monochromatic beams. This paper presents two novel concepts for focusing and imaging non-monochromatic thermal neutron beams with... (More)
- Thermal neutron beams are an indispensable tool in physics research. The spatial and the temporal resolution attainable in experiments are dependent on the flux and collimation of the neutron beam which remain relatively poor, even for modern neutron sources. These difficulties may be mitigated by the use of optics for focusing and imaging. Refractive and diffractive optical elements, e.g. compound refractive lenses and Fresnel zone plates, are attractive due to their low cost, and simple alignment. These optical elements, however, suffer from chromatic aberration, which limit their effectiveness to highly monochromatic beams. This paper presents two novel concepts for focusing and imaging non-monochromatic thermal neutron beams with well-known optical elements: (1) a fast mechanical transfocator based on a compound refractive lens, which actively varies the number of individual lenses in the beam path to focus and image a time-of-flight beam, and (2) a passive optical element consisting of a compound refractive lens, and a Fresnel zone plate, which may focus and image both continuous and pulsed neutron beams. (C) 2014 Elsevier B.V. All rights reserve (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4982758
- author
- Poulsen, S. O. ; Poulsen, H. F. and Bentley, Phillip LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Neutron optics, Neutron imaging, Compound refractive lenses, Zone, plates, Aberration, Microscopy
- in
- Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
- volume
- 767
- pages
- 415 - 420
- publisher
- Elsevier
- external identifiers
-
- wos:000344994600054
- scopus:84908042443
- ISSN
- 0167-5087
- DOI
- 10.1016/j.nima.2014.09.031
- language
- English
- LU publication?
- yes
- id
- 6e1bd334-c34e-4a84-b1aa-3dd80030fcb0 (old id 4982758)
- date added to LUP
- 2016-04-01 14:49:11
- date last changed
- 2022-03-29 22:58:14
@article{6e1bd334-c34e-4a84-b1aa-3dd80030fcb0,
abstract = {{Thermal neutron beams are an indispensable tool in physics research. The spatial and the temporal resolution attainable in experiments are dependent on the flux and collimation of the neutron beam which remain relatively poor, even for modern neutron sources. These difficulties may be mitigated by the use of optics for focusing and imaging. Refractive and diffractive optical elements, e.g. compound refractive lenses and Fresnel zone plates, are attractive due to their low cost, and simple alignment. These optical elements, however, suffer from chromatic aberration, which limit their effectiveness to highly monochromatic beams. This paper presents two novel concepts for focusing and imaging non-monochromatic thermal neutron beams with well-known optical elements: (1) a fast mechanical transfocator based on a compound refractive lens, which actively varies the number of individual lenses in the beam path to focus and image a time-of-flight beam, and (2) a passive optical element consisting of a compound refractive lens, and a Fresnel zone plate, which may focus and image both continuous and pulsed neutron beams. (C) 2014 Elsevier B.V. All rights reserve}},
author = {{Poulsen, S. O. and Poulsen, H. F. and Bentley, Phillip}},
issn = {{0167-5087}},
keywords = {{Neutron optics; Neutron imaging; Compound refractive lenses; Zone; plates; Aberration; Microscopy}},
language = {{eng}},
pages = {{415--420}},
publisher = {{Elsevier}},
series = {{Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment}},
title = {{Refractive and diffractive neutron optics with reduced chromatic aberration}},
url = {{http://dx.doi.org/10.1016/j.nima.2014.09.031}},
doi = {{10.1016/j.nima.2014.09.031}},
volume = {{767}},
year = {{2014}},
}