Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging
- Autores
- Siegwart, Muriel Dorothea; Woracek, Robin; Marquez Damian, Jose Ignacio; Tremsin, Anton; Manzi Orezzoli, Victoria; Strobl, Markus; Schmidt, Treicy Johanna; Boillat, Pierre
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We report on measured neutron cross section data for super-cooled water and ice by time-of-flight neutron transmission imaging. In particular we demonstrate the use of high duty cycle time-of-flight (HDC-TOF) measurements to determine the local aggregate state of water with spatial resolution, by exploiting the neutron cross section dependence on the mobility of hydrogen atoms for long neutron wavelengths (> 4 Å). While one can envision many different applications for this method, one example is to provide insights into the freezing mechanism during the start-up of polymer electrolyte fuel cells from below zero degrees. Unlike for other wavelength selective measurements (e.g. Bragg edge imaging), only a limited wavelength resolution is required for this method. With a chopper setup with high duty cycle (30 %), we reached a high contrast-to-noise ratio (CNR) with a contrast between ice and super-cooled water of 8 %. To maximize the CNR, we optimized the duty cycle, pulse period and image processing parameters. Moreover, we present a theoretical framework for performing such optimization calculations, which can be used to maximize CNR for any beam line and any substances. For the optimization procedure presented in this publication, we used cross section values for ice and super-cooled water measured with high wavelength resolution using wavelength frame multiplication choppers. Our results show that the aggregate state of water of a sufficiently thick layer of water (> 0.5 mm) can be reliably determined for a small area (1 mm2 ) and with a reasonable short acquisition time of 5 minutes.
Fil: Siegwart, Muriel Dorothea. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; Suiza
Fil: Woracek, Robin. European Spallation Source ESS; Suecia
Fil: Marquez Damian, Jose Ignacio. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Tremsin, Anton. University of California at Berkeley; Estados Unidos
Fil: Manzi Orezzoli, Victoria. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza
Fil: Strobl, Markus. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; Suiza
Fil: Schmidt, Treicy Johanna. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Eidgenössische Technische Hochschule Zürich; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Boillat, Pierre. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza - Materia
-
time of flight
neutron
cross section
ice - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/123692
Ver los metadatos del registro completo
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Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imagingSiegwart, Muriel DorotheaWoracek, RobinMarquez Damian, Jose IgnacioTremsin, AntonManzi Orezzoli, VictoriaStrobl, MarkusSchmidt, Treicy JohannaBoillat, Pierretime of flightneutroncross sectionicehttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2We report on measured neutron cross section data for super-cooled water and ice by time-of-flight neutron transmission imaging. In particular we demonstrate the use of high duty cycle time-of-flight (HDC-TOF) measurements to determine the local aggregate state of water with spatial resolution, by exploiting the neutron cross section dependence on the mobility of hydrogen atoms for long neutron wavelengths (> 4 Å). While one can envision many different applications for this method, one example is to provide insights into the freezing mechanism during the start-up of polymer electrolyte fuel cells from below zero degrees. Unlike for other wavelength selective measurements (e.g. Bragg edge imaging), only a limited wavelength resolution is required for this method. With a chopper setup with high duty cycle (30 %), we reached a high contrast-to-noise ratio (CNR) with a contrast between ice and super-cooled water of 8 %. To maximize the CNR, we optimized the duty cycle, pulse period and image processing parameters. Moreover, we present a theoretical framework for performing such optimization calculations, which can be used to maximize CNR for any beam line and any substances. For the optimization procedure presented in this publication, we used cross section values for ice and super-cooled water measured with high wavelength resolution using wavelength frame multiplication choppers. Our results show that the aggregate state of water of a sufficiently thick layer of water (> 0.5 mm) can be reliably determined for a small area (1 mm2 ) and with a reasonable short acquisition time of 5 minutes.Fil: Siegwart, Muriel Dorothea. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; SuizaFil: Woracek, Robin. European Spallation Source ESS; SueciaFil: Marquez Damian, Jose Ignacio. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Tremsin, Anton. University of California at Berkeley; Estados UnidosFil: Manzi Orezzoli, Victoria. Paul Scherrer Institut. Electrochemistry Laboratory; SuizaFil: Strobl, Markus. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; SuizaFil: Schmidt, Treicy Johanna. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Eidgenössische Technische Hochschule Zürich; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Boillat, Pierre. Paul Scherrer Institut. Electrochemistry Laboratory; SuizaAmerican Institute of Physics2019-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/123692Siegwart, Muriel Dorothea; Woracek, Robin; Marquez Damian, Jose Ignacio; Tremsin, Anton; Manzi Orezzoli, Victoria; et al.; Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging; American Institute of Physics; Review of Scientific Instruments; 90; 10; 10-2019; 1-410034-6748CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.5110288info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5110288info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:08:38Zoai:ri.conicet.gov.ar:11336/123692instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:08:38.793CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| title |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| spellingShingle |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging Siegwart, Muriel Dorothea time of flight neutron cross section ice |
| title_short |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| title_full |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| title_fullStr |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| title_full_unstemmed |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| title_sort |
Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging |
| dc.creator.none.fl_str_mv |
Siegwart, Muriel Dorothea Woracek, Robin Marquez Damian, Jose Ignacio Tremsin, Anton Manzi Orezzoli, Victoria Strobl, Markus Schmidt, Treicy Johanna Boillat, Pierre |
| author |
Siegwart, Muriel Dorothea |
| author_facet |
Siegwart, Muriel Dorothea Woracek, Robin Marquez Damian, Jose Ignacio Tremsin, Anton Manzi Orezzoli, Victoria Strobl, Markus Schmidt, Treicy Johanna Boillat, Pierre |
| author_role |
author |
| author2 |
Woracek, Robin Marquez Damian, Jose Ignacio Tremsin, Anton Manzi Orezzoli, Victoria Strobl, Markus Schmidt, Treicy Johanna Boillat, Pierre |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
time of flight neutron cross section ice |
| topic |
time of flight neutron cross section ice |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.3 https://purl.org/becyt/ford/2 |
| dc.description.none.fl_txt_mv |
We report on measured neutron cross section data for super-cooled water and ice by time-of-flight neutron transmission imaging. In particular we demonstrate the use of high duty cycle time-of-flight (HDC-TOF) measurements to determine the local aggregate state of water with spatial resolution, by exploiting the neutron cross section dependence on the mobility of hydrogen atoms for long neutron wavelengths (> 4 Å). While one can envision many different applications for this method, one example is to provide insights into the freezing mechanism during the start-up of polymer electrolyte fuel cells from below zero degrees. Unlike for other wavelength selective measurements (e.g. Bragg edge imaging), only a limited wavelength resolution is required for this method. With a chopper setup with high duty cycle (30 %), we reached a high contrast-to-noise ratio (CNR) with a contrast between ice and super-cooled water of 8 %. To maximize the CNR, we optimized the duty cycle, pulse period and image processing parameters. Moreover, we present a theoretical framework for performing such optimization calculations, which can be used to maximize CNR for any beam line and any substances. For the optimization procedure presented in this publication, we used cross section values for ice and super-cooled water measured with high wavelength resolution using wavelength frame multiplication choppers. Our results show that the aggregate state of water of a sufficiently thick layer of water (> 0.5 mm) can be reliably determined for a small area (1 mm2 ) and with a reasonable short acquisition time of 5 minutes. Fil: Siegwart, Muriel Dorothea. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; Suiza Fil: Woracek, Robin. European Spallation Source ESS; Suecia Fil: Marquez Damian, Jose Ignacio. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Tremsin, Anton. University of California at Berkeley; Estados Unidos Fil: Manzi Orezzoli, Victoria. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza Fil: Strobl, Markus. Paul Scherrer Institut. Laboratory for Neutron Scattering and Imaging; Suiza Fil: Schmidt, Treicy Johanna. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza. Eidgenössische Technische Hochschule Zürich; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Boillat, Pierre. Paul Scherrer Institut. Electrochemistry Laboratory; Suiza |
| description |
We report on measured neutron cross section data for super-cooled water and ice by time-of-flight neutron transmission imaging. In particular we demonstrate the use of high duty cycle time-of-flight (HDC-TOF) measurements to determine the local aggregate state of water with spatial resolution, by exploiting the neutron cross section dependence on the mobility of hydrogen atoms for long neutron wavelengths (> 4 Å). While one can envision many different applications for this method, one example is to provide insights into the freezing mechanism during the start-up of polymer electrolyte fuel cells from below zero degrees. Unlike for other wavelength selective measurements (e.g. Bragg edge imaging), only a limited wavelength resolution is required for this method. With a chopper setup with high duty cycle (30 %), we reached a high contrast-to-noise ratio (CNR) with a contrast between ice and super-cooled water of 8 %. To maximize the CNR, we optimized the duty cycle, pulse period and image processing parameters. Moreover, we present a theoretical framework for performing such optimization calculations, which can be used to maximize CNR for any beam line and any substances. For the optimization procedure presented in this publication, we used cross section values for ice and super-cooled water measured with high wavelength resolution using wavelength frame multiplication choppers. Our results show that the aggregate state of water of a sufficiently thick layer of water (> 0.5 mm) can be reliably determined for a small area (1 mm2 ) and with a reasonable short acquisition time of 5 minutes. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-10 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/123692 Siegwart, Muriel Dorothea; Woracek, Robin; Marquez Damian, Jose Ignacio; Tremsin, Anton; Manzi Orezzoli, Victoria; et al.; Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging; American Institute of Physics; Review of Scientific Instruments; 90; 10; 10-2019; 1-41 0034-6748 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/123692 |
| identifier_str_mv |
Siegwart, Muriel Dorothea; Woracek, Robin; Marquez Damian, Jose Ignacio; Tremsin, Anton; Manzi Orezzoli, Victoria; et al.; Distinction between super-cooled water and ice with high duty cycle time-of-flight neutron imaging; American Institute of Physics; Review of Scientific Instruments; 90; 10; 10-2019; 1-41 0034-6748 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/url/https://aip.scitation.org/doi/10.1063/1.5110288 info:eu-repo/semantics/altIdentifier/doi/10.1063/1.5110288 |
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openAccess |
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application/pdf application/pdf |
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American Institute of Physics |
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American Institute of Physics |
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