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dc.contributor.author
Enzmann, Frieder
dc.contributor.author
Miedaner, M.M.
dc.contributor.author
Kersten, Michael
dc.contributor.author
von Blohn, Nadine
dc.contributor.author
Mitra, S.K.
dc.contributor.author
Borrmann, Stephan
dc.contributor.author
Stampanoni, Marco
dc.contributor.author
Ammann, Markus
dc.contributor.author
Huthwelker, Thomas
dc.date.accessioned
2019-09-06T15:20:17Z
dc.date.available
2017-06-09T08:57:20Z
dc.date.available
2019-09-06T15:20:17Z
dc.date.issued
2010
dc.identifier.issn
1867-8610
dc.identifier.other
10.5194/amtd-3-4761-2010
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/28914
dc.identifier.doi
10.3929/ethz-b-000028914
dc.description.abstract
Three dimensional air bubble structure including size distribution, concentration andspatial distribution are important clues in identifying the growth regime of graupel andhailstone. For imaging of the bubble structure, a cryo-stage was developed to adapt tothe standard setup of the SLS X04SA tomography beamline (actually replaced by the TOMCAT beamline) at the Swiss Light Source synchrotron facility to the requirementsof ice particle micro-tomography. The cryo-stage setup provides for the first time 3-D-data on the individual inner pore shape delineation down to μm spatial (voxel) resolutionof sub-mm small naturally as well as wind tunnel rimed graupel particles. Special caremust be taken for maintaining a cooling chain between sampling and measurement. It must be kept at liquid nitrogen temperature (77 K) until measurement of the originalstructure at the μm spatial scale. However, even at that temperature there is no chanceto preserve any ice bubble structure at sub-μm spatial resolution due to the Kelvineffect. In natural graupel grains, Y-shaped morphology of air-filled pores was found.This morphology transformed into smaller and rounded voids well-known from literature when the ice particle was annealed for as short as half an hour at 265K and must,therefore, be regarded as artificial rather than representing the in situ pore structure.With the new synchrotron tomography approach, quantitative information on the in situpore structure statistics within individual samples representative for a known or, thus,deduced growth mode or history can be derived, in particular if combined with airplane sampling in the troposphere at in situ growth conditions.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Pore structure 3-D imaging by synchrotron micro-tomography of graupel grains
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2011-10-19
ethz.journal.title
Atmospheric Measurement Techniques Discussions
ethz.journal.volume
3
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
Atmos. meas. tech., Pap. open discuss.
ethz.pages.start
4761
en_US
ethz.pages.end
4789
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::03817 - Stampanoni, Marco F.M. / Stampanoni, Marco F.M.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::03817 - Stampanoni, Marco F.M. / Stampanoni, Marco F.M.
ethz.relation.isPreviousVersionOf
10.5194/amt-4-2225-2011
ethz.date.deposited
2017-06-09T08:57:25Z
ethz.source
ECIT
ethz.identifier.importid
imp59364d914f64879767
ethz.ecitpid
pub:48259
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T19:08:33Z
ethz.rosetta.lastUpdated
2019-09-06T15:20:35Z
ethz.rosetta.versionExported
true
ethz.COinS
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