Influence of the liquid helium meniscus on neutron reflectometry data
Neutron reflectometry offers a unique opportunity for the direct observation of nanostratification in ³He–⁴He
 mixtures in the ultra-low temperature limit. Unfortunately the results of recent experiments could not be wellmodelled
 on account of a seemingly anomalous variation of refl...
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| Опубліковано в: : | Физика низких температур |
|---|---|
| Дата: | 2016 |
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2016
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128468 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Influence of the liquid helium meniscus on neutron reflectometry data / C.J. Kinane, O. Kirichek, T.R. Charlton,P.V.E. McClintock // Физика низких температур. — 2016. — Т. 42, № 2. — С. 202–206. — Бібліогр.: 24 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862752061488103424 |
|---|---|
| author | Kinane, C.J. Kirichek, O. Charlton, T.R. McClintock, P.V.E. |
| author_facet | Kinane, C.J. Kirichek, O. Charlton, T.R. McClintock, P.V.E. |
| citation_txt | Influence of the liquid helium meniscus on neutron reflectometry data / C.J. Kinane, O. Kirichek, T.R. Charlton,P.V.E. McClintock // Физика низких температур. — 2016. — Т. 42, № 2. — С. 202–206. — Бібліогр.: 24 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Neutron reflectometry offers a unique opportunity for the direct observation of nanostratification in ³He–⁴He
mixtures in the ultra-low temperature limit. Unfortunately the results of recent experiments could not be wellmodelled
on account of a seemingly anomalous variation of reflectivity with momentum transfer. We now hypothesize
that this effect is attributable to an optical distortion caused by the liquid’s meniscus near the container
wall. The validity of this idea is tested and confirmed through a subsidiary experiment on a D₂O sample, showing
that the meniscus can significantly distort results if the beam size in the horizontal plane is comparable with,
or bigger than, the diameter of the container. The meniscus problem can be eliminated if the beam size is substantially
smaller than the diameter of the container, such that reflection takes place only from the flat region of
the liquid surface thus excluding the meniscus tails. Practical measures for minimizing the meniscus distortion
effect are discussed.
|
| first_indexed | 2025-12-07T21:14:38Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128468 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T21:14:38Z |
| publishDate | 2016 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Kinane, C.J. Kirichek, O. Charlton, T.R. McClintock, P.V.E. 2018-01-09T16:31:53Z 2018-01-09T16:31:53Z 2016 Influence of the liquid helium meniscus on neutron reflectometry data / C.J. Kinane, O. Kirichek, T.R. Charlton,P.V.E. McClintock // Физика низких температур. — 2016. — Т. 42, № 2. — С. 202–206. — Бібліогр.: 24 назв. — англ. 0132-6414 PACS: 61.05.F– https://nasplib.isofts.kiev.ua/handle/123456789/128468 Neutron reflectometry offers a unique opportunity for the direct observation of nanostratification in ³He–⁴He
 mixtures in the ultra-low temperature limit. Unfortunately the results of recent experiments could not be wellmodelled
 on account of a seemingly anomalous variation of reflectivity with momentum transfer. We now hypothesize
 that this effect is attributable to an optical distortion caused by the liquid’s meniscus near the container
 wall. The validity of this idea is tested and confirmed through a subsidiary experiment on a D₂O sample, showing
 that the meniscus can significantly distort results if the beam size in the horizontal plane is comparable with,
 or bigger than, the diameter of the container. The meniscus problem can be eliminated if the beam size is substantially
 smaller than the diameter of the container, such that reflection takes place only from the flat region of
 the liquid surface thus excluding the meniscus tails. Practical measures for minimizing the meniscus distortion
 effect are discussed. We thank the ISIS sample environment group for valuable
 technical assistance. This work was supported by the
 EPSRC grant EP/F021429/1 “Critical and surface phenomena
 of quantum fluids”. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Морфология и свойства наноструктур Influence of the liquid helium meniscus on neutron reflectometry data Article published earlier |
| spellingShingle | Influence of the liquid helium meniscus on neutron reflectometry data Kinane, C.J. Kirichek, O. Charlton, T.R. McClintock, P.V.E. Морфология и свойства наноструктур |
| title | Influence of the liquid helium meniscus on neutron reflectometry data |
| title_full | Influence of the liquid helium meniscus on neutron reflectometry data |
| title_fullStr | Influence of the liquid helium meniscus on neutron reflectometry data |
| title_full_unstemmed | Influence of the liquid helium meniscus on neutron reflectometry data |
| title_short | Influence of the liquid helium meniscus on neutron reflectometry data |
| title_sort | influence of the liquid helium meniscus on neutron reflectometry data |
| topic | Морфология и свойства наноструктур |
| topic_facet | Морфология и свойства наноструктур |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128468 |
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