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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1107/S0909049510028335
|2 doi
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|a pubmed25n0675.xml
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|a (NLM)20975219
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Riekel, C
|e verfasserin
|4 aut
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|a Raster microdiffraction with synchrotron radiation of hydrated biopolymers with nanometre step-resolution
|b case study of starch granules
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|c 2010
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 07.02.2011
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|a Date Revised 09.04.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a X-ray radiation damage propagation is explored for hydrated starch granules in order to reduce the step resolution in raster-microdiffraction experiments to the nanometre range. Radiation damage was induced by synchrotron radiation microbeams of 5, 1 and 0.3 µm size with ∼0.1 nm wavelength in B-type potato, Canna edulis and Phajus grandifolius starch granules. A total loss of crystallinity of granules immersed in water was found at a dose of ∼1.3 photons nm(-3). The temperature dependence of radiation damage suggests that primary radiation damage prevails up to about 120 K while secondary radiation damage becomes effective at higher temperatures. Primary radiation damage remains confined to the beam track at 100 K. Propagation of radiation damage beyond the beam track at room temperature is assumed to be due to reactive species generated principally by water radiolysis induced by photoelectrons. By careful dose selection during data collection, raster scans with 500 nm step-resolution could be performed for granules immersed in water
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Starch
|2 NLM
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|a 9005-25-8
|2 NLM
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|a Burghammer, M
|e verfasserin
|4 aut
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|a Davies, R J
|e verfasserin
|4 aut
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|a Di Cola, E
|e verfasserin
|4 aut
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|a König, C
|e verfasserin
|4 aut
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|a Lemke, H T
|e verfasserin
|4 aut
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|a Putaux, J L
|e verfasserin
|4 aut
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| 700 |
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|a Schöder, S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 17(2010), 6 vom: 19. Nov., Seite 743-50
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
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|g volume:17
|g year:2010
|g number:6
|g day:19
|g month:11
|g pages:743-50
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|u http://dx.doi.org/10.1107/S0909049510028335
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