Neutron reflectometry on highly absorbing films and its application to (B4C)-B-10-based neutron detectors
(2016) In Royal Society of London. Proceedings A. Mathematical, Physical and Engineering Sciences 472(2185).- Abstract
- Neutron reflectometry is a powerful tool used for studies of surfaces and interfaces. The absorption in the typical studied materials is neglected and this technique is limited only to the reflectivity measurement. For strongly absorbing nuclei, the absorption can be directly measured by using the neutron-induced fluorescence technique which exploits the prompt particle emission of absorbing isotopes. This technique is emerging from soft matter and biology where highly absorbing nuclei, in very small quantities, are used as a label for buried layers. Nowadays, the importance of absorbing layers is rapidly increasing, partially because of their application in neutron detection; a field that has become more active also due to the... (More)
- Neutron reflectometry is a powerful tool used for studies of surfaces and interfaces. The absorption in the typical studied materials is neglected and this technique is limited only to the reflectivity measurement. For strongly absorbing nuclei, the absorption can be directly measured by using the neutron-induced fluorescence technique which exploits the prompt particle emission of absorbing isotopes. This technique is emerging from soft matter and biology where highly absorbing nuclei, in very small quantities, are used as a label for buried layers. Nowadays, the importance of absorbing layers is rapidly increasing, partially because of their application in neutron detection; a field that has become more active also due to the He-3-shortage. We extend the neutron-induced fluorescence technique to the study of layers of highly absorbing materials, in particular (B4C)-B-10. The theory of neutron reflectometry is a commonly studied topic; however, when a strong absorption is present the subtle relationship between the reflection and the absorption of neutrons is not widely known. The theory for a general stack of absorbing layers has been developed and compared to measurements. We also report on the requirements that a (B4C)-B-10 layer must fulfil in order to be employed as a converter in neutron detection. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8738856
- author
- Piscitelli, Francesco LU ; Khaplanov, Anton LU ; Devishvili, A. ; Schmidt, S. ; Höglund, Carina LU ; Birch, J. ; Dennison, A. J. C. ; Gutfreund, P. ; Hall-Wilton, Richard LU and Van Esch, P.
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- neutron-induced fluorescence, neutron reflectometry, boron-10, neutron, detection
- in
- Royal Society of London. Proceedings A. Mathematical, Physical and Engineering Sciences
- volume
- 472
- issue
- 2185
- article number
- 20150711
- publisher
- Royal Society Publishing
- external identifiers
-
- wos:000368479000021
- scopus:84956858436
- pmid:26997902
- ISSN
- 1364-5021
- DOI
- 10.1098/rspa.2015.0711
- language
- English
- LU publication?
- yes
- id
- 6f0730e9-4bc7-44d7-a8bc-4d36e2e69da9 (old id 8738856)
- date added to LUP
- 2016-04-01 12:52:28
- date last changed
- 2022-02-11 17:55:23
@article{6f0730e9-4bc7-44d7-a8bc-4d36e2e69da9,
abstract = {{Neutron reflectometry is a powerful tool used for studies of surfaces and interfaces. The absorption in the typical studied materials is neglected and this technique is limited only to the reflectivity measurement. For strongly absorbing nuclei, the absorption can be directly measured by using the neutron-induced fluorescence technique which exploits the prompt particle emission of absorbing isotopes. This technique is emerging from soft matter and biology where highly absorbing nuclei, in very small quantities, are used as a label for buried layers. Nowadays, the importance of absorbing layers is rapidly increasing, partially because of their application in neutron detection; a field that has become more active also due to the He-3-shortage. We extend the neutron-induced fluorescence technique to the study of layers of highly absorbing materials, in particular (B4C)-B-10. The theory of neutron reflectometry is a commonly studied topic; however, when a strong absorption is present the subtle relationship between the reflection and the absorption of neutrons is not widely known. The theory for a general stack of absorbing layers has been developed and compared to measurements. We also report on the requirements that a (B4C)-B-10 layer must fulfil in order to be employed as a converter in neutron detection.}},
author = {{Piscitelli, Francesco and Khaplanov, Anton and Devishvili, A. and Schmidt, S. and Höglund, Carina and Birch, J. and Dennison, A. J. C. and Gutfreund, P. and Hall-Wilton, Richard and Van Esch, P.}},
issn = {{1364-5021}},
keywords = {{neutron-induced fluorescence; neutron reflectometry; boron-10; neutron; detection}},
language = {{eng}},
number = {{2185}},
publisher = {{Royal Society Publishing}},
series = {{Royal Society of London. Proceedings A. Mathematical, Physical and Engineering Sciences}},
title = {{Neutron reflectometry on highly absorbing films and its application to (B4C)-B-10-based neutron detectors}},
url = {{http://dx.doi.org/10.1098/rspa.2015.0711}},
doi = {{10.1098/rspa.2015.0711}},
volume = {{472}},
year = {{2016}},
}