Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/337691
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampRinkel, Jeanpt_BR
dc.typeArtigopt_BR
dc.titleX-ray coherent diffraction imaging: sequential inverse problems simulationpt_BR
dc.contributor.authorRinkel, Jeanpt_BR
dc.contributor.authorPolli, Jean Mariept_BR
dc.contributor.authorMiqueles, Eduardo X.pt_BR
dc.subjectDifraçãopt_BR
dc.subjectMicroscopiapt_BR
dc.subjectEquação de ondapt_BR
dc.subject.otherlanguageDiffractionpt_BR
dc.subject.otherlanguageMicroscopypt_BR
dc.subject.otherlanguageWave equationpt_BR
dc.description.abstractImprovement of spatial coherence in third generation synchrotron beamlines made possible the development of X-ray plane-wave coherent diffraction imaging technique (plane-wave CDI), which enables 3D imaging at nanometric resolution. In this work, we first simulated the influence of detector geometry by comparing reconstruction quality of planar samples made of gold nanoparticles. We compared a commercially available detector geometry with the next Medipix3-based large area detector designed for the next fourth generation Brazilian synchrotron, sirius. The spatial resolution was highly improved, from 7.2 nm for the commercial geometry to 4.8 nm for the Medipix3 detector by keeping the same global image quality. Finally, global image qualities were compared by adjusting the sample-to-detectors distances at a given spatial resolution. For thick samples reconstruction at such high nanometric resolutions, the main limitation of current reconstruction approaches are due to the complex wave propagation within the sample, given by the inhomogeneous Helmholtz equation. We proposed an iterative method to reconstruct the complex refraction index. This method enables to keep the image quality almost constant beyond the resolution limit for thick samples made of gold nanoparticles in water.pt_BR
dc.relation.ispartofNuclear instruments & methods in physics research. Section A, Accelerators spectrometers detectors and associated equipmentpt_BR
dc.relation.ispartofabbreviationNucl. instrum. methods phys. res. Apt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryHolandapt_BR
dc.publisherElsevierpt_BR
dc.date.issued2018pt_BR
dc.date.monthofcirculationDec.pt_BR
dc.language.isoengpt_BR
dc.description.volume912pt_BR
dc.description.issuespecialSIpt_BR
dc.description.firstpage43pt_BR
dc.description.lastpage47pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0168-9002pt_BR
dc.identifier.eissn1872-9576pt_BR
dc.identifier.doi10.1016/j.nima.2017.10.032pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0168900217310926pt_BR
dc.date.available2020-03-27T20:35:25Z-
dc.date.accessioned2020-03-27T20:35:25Z-
dc.description.provenanceMade available in DSpace on 2020-03-27T20:35:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2018en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/337691-
dc.description.conferencenomeInternational Conference on New Developments in Photodetectionpt_BR
dc.contributor.departmentDepartamento de Física Aplicadapt_BR
dc.contributor.unidadeInstituto de Física "Gleb Wataghin"pt_BR
dc.subject.keywordPlane wave coherent diffraction imagingpt_BR
dc.subject.keywordInhomogeneous Helmholtz equationpt_BR
dc.subject.keywordMedipix detectorpt_BR
dc.identifier.source000453717200012pt_BR
dc.creator.orcid0000-0001-9980-0304pt_BR
dc.type.formArtigo de eventopt_BR
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