Salditt, Tim

[["dc.bibliographiccitation.firstpage","230"],["dc.bibliographiccitation.issue","5579"],["dc.bibliographiccitation.journal","Science"],["dc.bibliographiccitation.lastpage","234"],["dc.bibliographiccitation.volume","297"],["dc.contributor.author","Pfeiffer, Felix"],["dc.contributor.author","David, Christian"],["dc.contributor.author","Burghammer, Manfred"],["dc.contributor.author","Riekel, C."],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-09-07T11:45:19Z"],["dc.date.available","2017-09-07T11:45:19Z"],["dc.date.issued","2002"],["dc.description.abstract","We show that resonant coupling of synchrotron beams into suitable nanostructures can be used for the generation of coherent x-ray point sources. A two-dimensionally con ning x-ray waveguide structure has been fabricated by e-beam lithography. By shining a parallel undulator beam onto the structure, a discrete set of resonant modes can be excited in the dielectric cavity, depending on the two orthogonal coupling angles between the beam and the waveguide interfaces. The resonant excitation of the modes is evidenced from the characteristic set of coupling angles as well as the observed far-field pattern. The x-ray nanostructure may be used as coherent x-ray point sources with a beam cross section in the nanometer range."],["dc.identifier.doi","10.1126/science.1071994"],["dc.identifier.gro","3144189"],["dc.identifier.isi","000176738100035"],["dc.identifier.pmid","12114620"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/1785"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0036-8075"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.title","Two-dimensional x-ray waveguides and point sources"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","13973"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Optics Express"],["dc.bibliographiccitation.lastpage","13989"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Hagemann, Johannes"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-10-24T13:00:40Z"],["dc.date.accessioned","2021-10-11T11:35:06Z"],["dc.date.available","2017-10-24T13:00:40Z"],["dc.date.available","2021-10-11T11:35:06Z"],["dc.date.issued","2017"],["dc.description.abstract","We propose a reconstruction scheme for hard x-ray inline holography, a variant of propagation imaging, which is compatible with imaging conditions of partial (spatial) coherence. This is a relevant extension of current full-field phase contrast imaging, which requires full coherence. By the ability to reconstruct the coherent modes of the illumination (probe), as demonstrated here, the requirements of coherence filtering could be relaxed in many experimentally relevant settings. The proposed scheme is built on the mixed-state approach introduced in [Nature494, 68 (2013)], combined with multi-plane detection of extended wavefields [Opt. Commun.199, 65 (2001), Opt. Express22, 16571 (2014)]. Notably, the diversity necessary for the reconstruction is generated by acquiring measurements at different defocus positions of the detector. We show that we can recover the coherent mode structure and occupancy numbers of the partial coherent probe. Practically relevant quantities as the transversal coherence length can be computed from the reconstruction in a straightforward way."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2017"],["dc.identifier.doi","10.1364/OE.25.013973"],["dc.identifier.gro","3142470"],["dc.identifier.pmid","28788984"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14797"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/90727"],["dc.language","eng"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","final"],["dc.relation.issn","1094-4087"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.subject","X-ray imaging; Coherence; Phase retrieval"],["dc.subject.ddc","530"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","Reconstructing mode mixtures in the optical near-field"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","17480"],["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Optics Express"],["dc.bibliographiccitation.lastpage","17495"],["dc.bibliographiccitation.volume","20"],["dc.contributor.author","Singer, A."],["dc.contributor.author","Sorgenfrei, F."],["dc.contributor.author","Mancuso, A. P."],["dc.contributor.author","Gerasimova, N."],["dc.contributor.author","Yefanov, O. M."],["dc.contributor.author","Gulden, J."],["dc.contributor.author","Gorniak, Thomas"],["dc.contributor.author","Senkbeil, Tobias"],["dc.contributor.author","Sakdinawat, A."],["dc.contributor.author","Liu, Y."],["dc.contributor.author","Attwood, D."],["dc.contributor.author","Dziarzhytski, S."],["dc.contributor.author","Mai, Dong-Du"],["dc.contributor.author","Treusch, R."],["dc.contributor.author","Weckert, E."],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Rosenhahn, Axel"],["dc.contributor.author","Wurth, W."],["dc.contributor.author","Vartanyants, I. A."],["dc.date.accessioned","2017-09-07T11:48:50Z"],["dc.date.available","2017-09-07T11:48:50Z"],["dc.date.issued","2012"],["dc.description.abstract","The experimental characterization of the spatial and temporal coherence properties of the free-electron laser in Hamburg (FLASH) at a wavelength of 8.0 nm is presented. Double pinhole diffraction patterns of single femtosecond pulses focused to a size of about 10x10 mu m(2) were measured. A transverse coherence length of 6.2 +/- 0.9 mu m in the horizontal and 8.7 +/- 1.0 mu m in the vertical direction was determined from the most coherent pulses. Using a split and delay unit the coherence time of the pulses produced in the same operation conditions of FLASH was measured to be 1.75 +/- 0.01 fs. From our experiment we estimated the degeneracy parameter of the FLASH beam to be on the order of 10(10) to 10(11), which exceeds the values of this parameter at any other source in the same energy range by many orders of magnitude. (C) 2012 Optical Society of America"],["dc.identifier.doi","10.1364/OE.20.017480"],["dc.identifier.fs","589607"],["dc.identifier.gro","3142494"],["dc.identifier.isi","000307356300021"],["dc.identifier.pmid","23038301"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9567"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8852"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.intern","Merged from goescholar"],["dc.notes.oa","gold"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1094-4087"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.title","Spatial and temporal coherence properties of single free-electron laser pulses"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","22"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","128"],["dc.contributor.author","Soltau, Jakob"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2022-06-07T06:45:02Z"],["dc.date.available","2022-06-07T06:45:02Z"],["dc.date.issued","2022"],["dc.description.abstract","We present a novel approach to x-ray microscopy based on a multilayer zone plate which is positioned\r\nbehind a sample similar to an objective lens. However, unlike transmission x-ray microscopy, we do not\r\ncontent ourselves with a sharp intensity image; instead, we incorporate the multilayer zone plate transfer\r\nfunction directly in an iterative phase retrieval scheme to exploit the large diffraction angles of the small\r\nlayers. The presence of multiple diffraction orders, which is conventionally a nuisance, now comes as an\r\nadvantage for the reconstruction and photon efficiency. In a first experiment, we achieve sub-10-nm\r\nresolution and a quantitative phase contrast."],["dc.identifier.doi","10.1103/PhysRevLett.128.223901"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108716"],["dc.language.iso","en"],["dc.relation","SFB 1456 | Cluster C | C03: Intensity correlations in diffraction experiments: convolution, reconstruction and information"],["dc.relation","SFB 1456: Mathematik des Experiments: Die Herausforderung indirekter Messungen in den Naturwissenschaften"],["dc.relation.issn","0031-9007"],["dc.relation.issn","1079-7114"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","CC BY 4.0"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","Coherent Diffractive Imaging with Diffractive Optics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","227"],["dc.bibliographiccitation.journal","Journal of Synchrotron Radiation"],["dc.bibliographiccitation.lastpage","236"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Krueger, S. P."],["dc.contributor.author","Neubauer, Heike"],["dc.contributor.author","Bartels, Matthias"],["dc.contributor.author","Kalbfleisch, Sebastian"],["dc.contributor.author","Giewekemeyer, Klaus"],["dc.contributor.author","Wilbrandt, P. J."],["dc.contributor.author","Sprung, Michael"],["dc.contributor.author","Salditt, Tim"],["dc.date.accessioned","2017-09-07T11:48:58Z"],["dc.date.available","2017-09-07T11:48:58Z"],["dc.date.issued","2012"],["dc.description.abstract","The propagation of hard X-ray synchrotron beams in waveguides with guiding layer diameters in the 9-35 nm thickness range has been studied. The planar waveguide structures consist of an optimized two-component cladding. The presented fabrication method is suitable for short and leak-proof waveguide slices with lengths (along the optical axis) in the sub-500 mu m range, adapted for optimized transmission at photon energies of 11.5-18 keV. A detailed comparison between finite-difference simulations of waveguide optics and the experimental results is presented, concerning transmission, divergence of the waveguide exit beam, as well as the angular acceptance. In a second step, two crossed waveguides have been used to create a quasi-point source for propagation-based X-ray imaging at the new nano-focus endstation of the P10 coherence beamline at Petra III. By inverting the measured Fraunhofer diffraction pattern by an iterative error-reduction algorithm, a two-dimensional focus of 10 nm x 10 nm is obtained. Finally, holographic imaging of a lithographic test structure based on this optical system is demonstrated."],["dc.identifier.doi","10.1107/S0909049511051983"],["dc.identifier.gro","3142574"],["dc.identifier.isi","000300571300012"],["dc.identifier.pmid","22338684"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8940"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0909-0495"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.rights","CC BY-NC 2.0"],["dc.subject.gro","x-ray optics"],["dc.title","Sub-10 nm beam confinement by X-ray waveguides: design, fabrication and characterization of optical properties"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","85"],["dc.bibliographiccitation.journal","Journal of Applied Crystallography"],["dc.bibliographiccitation.lastpage","92"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Krywka, Christina"],["dc.contributor.author","Neubauer, Henrike"],["dc.contributor.author","Priebe, Marius"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Keckes, Jozef"],["dc.contributor.author","Buffet, Adeline"],["dc.contributor.author","Roth, Stephan Volkher"],["dc.contributor.author","Doehrmann, Ralph"],["dc.contributor.author","Mueller, Martin"],["dc.date.accessioned","2017-09-07T11:49:00Z"],["dc.date.available","2017-09-07T11:49:00Z"],["dc.date.issued","2012"],["dc.description.abstract","The micro- and nanofocus X-ray scattering (MINAXS) beamline of PETRA III is equipped with two consecutively arranged endstations, the last of which is the nanofocus endstation. The first in-beam commissioning of the experimental equipment was successfully performed at the end of 2010, using two-dimensionally confining hard X-ray silicon waveguides with cross sections of 50 nm x 50 mu m to 50 nm x 2 mu m for nanobeam generation. A full characterization of the waveguide-generated beams was performed, giving values for the beam geometries, the transmission efficiencies of the waveguides and absolute fluxes. Along with these results a detailed description of the setup is presented in this paper. A first high-resolution nanodiffraction experiment on a nanocrystalline TiN hard coating was performed to verify the resolution of the nanodiffraction setup and to reveal the local gradients across the blasted TiN coating. In conclusion, the main concern is the availability of the nanobeam, how it was generated and the fact that a beam out of a two-dimensionally confining waveguide was used for diffraction experiments for the first time."],["dc.identifier.doi","10.1107/S0021889811049132"],["dc.identifier.gro","3142584"],["dc.identifier.isi","000299206400010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8951"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0021-8898"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray scattering"],["dc.title","A two-dimensional waveguide beam for X-ray nanodiffraction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Kalbfleisch, Sebastian"],["dc.contributor.author","Neubauer, Heike"],["dc.contributor.author","Krüger, Sven P"],["dc.contributor.author","Bartels, Matthias"],["dc.contributor.author","Osterhoff, Markus"],["dc.contributor.author","Mai, Dong-Du"],["dc.contributor.author","Giewekemeyer, Klaus"],["dc.contributor.author","Hartmann, Britta"],["dc.contributor.author","Sprung, Michael"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","McNulty, Ian"],["dc.contributor.author","Eyberger, Catherine"],["dc.contributor.author","Lai, Barry"],["dc.date.accessioned","2017-09-07T11:54:07Z"],["dc.date.available","2017-09-07T11:54:07Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1063/1.3625313"],["dc.identifier.gro","3145117"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2818"],["dc.language.iso","en"],["dc.notes.intern","Crossref Import"],["dc.notes.status","public"],["dc.publisher","AIP Publishing"],["dc.publisher.place","Melville, NY"],["dc.relation","SFB 755: Nanoscale Photonic Imaging"],["dc.relation.conference","10th International Conference on X-Ray Microscopy"],["dc.relation.eventend","2010-08-20"],["dc.relation.eventlocation","Chicago, Illinois"],["dc.relation.eventstart","2010-08-15"],["dc.relation.isbn","0-7354-0925-0"],["dc.relation.isbn","978-0-7354-0925-5"],["dc.relation.ispartof","The 10th International Conference on X-Ray Microscopy"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","The Göttingen Holography Endstation of Beamline P10 at PETRA III∕DESY"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","169903"],["dc.bibliographiccitation.issue","16"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","93"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Vogel, M."],["dc.contributor.author","Fenzl, W."],["dc.date.accessioned","2017-09-07T11:43:15Z"],["dc.date.available","2017-09-07T11:43:15Z"],["dc.date.issued","2004"],["dc.identifier.doi","10.1103/PhysRevLett.93.169903"],["dc.identifier.gro","3143937"],["dc.identifier.isi","000224533300096"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/1506"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.iserratumof","/handle/2/45938"],["dc.relation.issn","0031-9007"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.title","Erratum: Thermal fluctuations and positional correlations in oriented lipid membranes (vol 90, art no 178101, 2003)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","erratum_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","161"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Applied Physics Letters"],["dc.bibliographiccitation.lastpage","163"],["dc.bibliographiccitation.volume","85"],["dc.contributor.author","Jarre, A."],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Panzner, T"],["dc.contributor.author","Pietsch, U."],["dc.contributor.author","Pfeiffer, Felix"],["dc.date.accessioned","2017-09-07T11:43:18Z"],["dc.date.available","2017-09-07T11:43:18Z"],["dc.date.issued","2004"],["dc.description.abstract","We report a white beam x-ray waveguide (WG) experiment. A resonant beam coupler x-ray waveguide (RBC) is used simultaneously as a broad bandpass (or multibandpass) monochromator and as a beam compressor. We show that, depending on the geometrical properties of the WG, the exiting beam consists of a defined number of wavelengths which can be shifted by changing the angle of incidence of the white x-ray synchrotron beam. The characteristic far-field pattern is recorded as a function of exit angle and energy. This x-ray optical setup may be used to enhance the intensity of coherent x-ray WG beams since the full energetic acceptance of the WG mode is transmitted. (C) 2004 American Institute of Physics."],["dc.identifier.doi","10.1063/1.1768309"],["dc.identifier.gro","3143965"],["dc.identifier.isi","000222784300001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/1537"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","0003-6951"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.title","White beam x-ray waveguide optics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","18440"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Optics express"],["dc.bibliographiccitation.lastpage","53"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Keskinbora, Kahraman"],["dc.contributor.author","Robisch, Anna Lena"],["dc.contributor.author","Mayer, Marcel"],["dc.contributor.author","Sanli, Umut T."],["dc.contributor.author","Grévent, Corinne"],["dc.contributor.author","Wolter, Christian"],["dc.contributor.author","Weigand, Markus"],["dc.contributor.author","Szeghalmi, Adriana V."],["dc.contributor.author","Knez, Mato"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Schütz, Gisela"],["dc.date.accessioned","2019-07-10T08:11:56Z"],["dc.date.available","2019-07-10T08:11:56Z"],["dc.date.issued","2014-07-28"],["dc.description.abstract","X-ray microscopy is a successful technique with applications in several key fields. Fresnel zone plates (FZPs) have been the optical elements driving its success, especially in the soft X-ray range. However, focusing of hard X-rays via FZPs remains a challenge. It is demonstrated here, that two multilayer type FZPs, delivered from the same multilayer deposit, focus both hard and soft X-rays with high fidelity. The results prove that these lenses can achieve at least 21 nm half-pitch resolution at 1.2 keV demonstrated by direct imaging, and sub-30 nm FWHM (full-pitch) resolution at 7.9 keV, deduced from autocorrelation analysis. Reported FZPs had more than 10% diffraction efficiency near 1.5 keV."],["dc.identifier.pmid","25089463"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12649"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60824"],["dc.language.iso","en"],["dc.relation.issn","1094-4087"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray optics"],["dc.subject.gro","x-ray imaging"],["dc.title","Multilayer Fresnel zone plates for high energy radiation resolve 21 nm features at 1.2 keV."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]