Schmahl, Günter A.

[["dc.bibliographiccitation.firstpage","868"],["dc.bibliographiccitation.journal","NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT"],["dc.bibliographiccitation.lastpage","871"],["dc.bibliographiccitation.volume","467"],["dc.contributor.author","Kamijo, N."],["dc.contributor.author","Suzuki, Y."],["dc.contributor.author","Awajia, M."],["dc.contributor.author","Takeuchi, A."],["dc.contributor.author","Uesugi, K."],["dc.contributor.author","Yasumoto, M."],["dc.contributor.author","Tamura, S."],["dc.contributor.author","Kohmura, Y."],["dc.contributor.author","Duevel, A."],["dc.contributor.author","Rudolph, Dietbert H."],["dc.contributor.author","Schmahl, Günther A."],["dc.date.accessioned","2018-11-07T08:51:53Z"],["dc.date.available","2018-11-07T08:51:53Z"],["dc.date.issued","2001"],["dc.description.abstract","A zone plate for hard X-rays with outermost zone width as small as 30 nm and thickness similar to 14 mum fabricated by sputtered-sliced technology was evaluated. With the brilliant X-ray beam from the undulator at the SPring-8 the minimum focal spot size attained was similar to0.8 mum at the energy of 18.6keV. The intrinsic diffraction efficiency was determined to be similar to 12%. (C) 2001 Elsevier Science B.V. All rights reserved."],["dc.identifier.doi","10.1016/S0168-9002(01)00501-0"],["dc.identifier.isi","000171012800009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22040"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","7th International Conference on Synchrotron Radiation Instrumentation (SRI 2000)"],["dc.relation.eventlocation","TECH UNIV BERLIN, BERLIN, GERMANY"],["dc.relation.issn","0168-9002"],["dc.title","Characterization of the sputtered-sliced zone plate for high energy X-rays"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","95"],["dc.bibliographiccitation.journal","Journal de Physique. IV, Proceedings"],["dc.bibliographiccitation.lastpage","98"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Wiesemann, U."],["dc.contributor.author","Thieme, Juergen"],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Früke, R."],["dc.contributor.author","Rehbein, S."],["dc.contributor.author","Niemann, B."],["dc.contributor.author","Rudolph, D."],["dc.contributor.author","Schmahl, G."],["dc.date.accessioned","2018-11-07T10:40:29Z"],["dc.date.available","2018-11-07T10:40:29Z"],["dc.date.issued","2003"],["dc.description.abstract","A new scanning transmission X-ray microscope (STXM) has been built at the undulator U41 of the BESSY II storage ring. The STXM monochromator consists of a plane mirror and a plane grating with varied line density. First NEXAFS spectra of a polyimide foil at the carbon, nitrogen and oxygen K absorption edges are shown. The photon rate in the focal spot is about 10 MHz at the carbon and about 500 MHz at the oxygen K absorption edge. The first images are presented."],["dc.identifier.doi","10.1051/jp4:200300037"],["dc.identifier.isi","000183273900024"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46308"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.conference","7th International Conference on X-Ray Microscopy"],["dc.relation.eventlocation","GRENOBLE, FRANCE"],["dc.relation.issn","1155-4339"],["dc.title","First results of the new scanning transmission X-ray microscope at BESSY-II"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","483"],["dc.bibliographiccitation.journal","Journal de Physique. IV, Proceedings"],["dc.bibliographiccitation.lastpage","486"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Eimüller, T."],["dc.contributor.author","Fischer, P."],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Denbeaux, G."],["dc.contributor.author","Scholz, M."],["dc.contributor.author","Kohler, M."],["dc.contributor.author","Schmahl, G."],["dc.contributor.author","Bayreuther, G."],["dc.contributor.author","Schutz, G."],["dc.date.accessioned","2018-11-07T10:40:32Z"],["dc.date.available","2018-11-07T10:40:32Z"],["dc.date.issued","2003"],["dc.description.abstract","Transmission x-ray microscopy with the x-ray magnetic circular dichroism as a contrast mechanism was used to image the field dependent evolution of magnetic domains in artificially nanostructured strips of a multilayered Fe/Gd system. A diversity of domain configurations have been imaged for different strengths of the applied magnetic field and different widths of the strips, varying between 100 nm, and 1 mum. Undulating domain patterns, analogous to those observed in other condensed matter systems could be found."],["dc.identifier.doi","10.1051/jp4:20030127"],["dc.identifier.isi","000183273900114"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46320"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.conference","7th International Conference on X-Ray Microscopy"],["dc.relation.eventlocation","GRENOBLE, FRANCE"],["dc.relation.issn","1155-4339"],["dc.title","Multilayered magnetic nanostrips studied by transmission X-ray microscopy"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","123"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Structural Biology"],["dc.bibliographiccitation.lastpage","132"],["dc.bibliographiccitation.volume","132"],["dc.contributor.author","Vogt, S."],["dc.contributor.author","Schneider, G."],["dc.contributor.author","Steuernagel, A."],["dc.contributor.author","Lucchesi, J."],["dc.contributor.author","Schulze, E."],["dc.contributor.author","Rudolph, D."],["dc.contributor.author","Schmahl, G."],["dc.date.accessioned","2018-11-07T08:33:41Z"],["dc.date.available","2018-11-07T08:33:41Z"],["dc.date.issued","2000"],["dc.description.abstract","X-ray microscopy is applied to detect specific proteins in whole cell nuclei of Drosophila melanogaster using immunogold labeling and silver enhancement. As a model for a small subnuclear structure the Drosophila dosage compensation protein MSL-1 was chosen. It associates with a number of other proteins to form a hetero-multiprotein complex, which elevates the transcriptional activity of the single X chromosome in males. This phenomenon is known as dosage compensation and is essential for the survival of male flies. The distribution of the Drosophila dosage compensation complex was studied by X-ray microscopy, because though the complex is expected to function by remodeling the structure of chromatin, its exact mode of action is not yet known. Many similar protein complexes are associated with different aspects of chromatin-mediated gene regulation in all eucaryotic organisms and can also be studied with the approach presented in this work. The distribution of MSL-1 protein in the nuclei of fixed D, melanogaster culture cells is visualized using the Gottingen X-ray microscope at the electron storage ring BESSY I. In addition to conventional and confocal laserscan fluorescence microscopy, X-ray microscopic investigations were performed at room as well as at cryogenic temperatures. The label can clearly be identified in the X-ray micrographs and shows detailed structure in the cell nuclei. Currently, X-ray micrographs show details in the cell nuclei about five times smaller than those in visible light micrographs. (C) 2000 Academic Press."],["dc.identifier.doi","10.1006/jsbi.2000.4277"],["dc.identifier.isi","167116800005"],["dc.identifier.pmid","11162734"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17638"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1047-8477"],["dc.title","X-ray microscopic studies of the Drosophila dosage compensation complex"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","S227"],["dc.bibliographiccitation.journal","Applied Physics B"],["dc.bibliographiccitation.lastpage","S232"],["dc.bibliographiccitation.volume","70"],["dc.contributor.author","Schnurer, M."],["dc.contributor.author","Cheng, Z."],["dc.contributor.author","Hentschel, M."],["dc.contributor.author","Krausz, F."],["dc.contributor.author","Wilhein, T."],["dc.contributor.author","Hambach, D."],["dc.contributor.author","Schmahl, G."],["dc.contributor.author","Drescher, M."],["dc.contributor.author","Lim, Y."],["dc.contributor.author","Heinzmann, U."],["dc.date.accessioned","2018-11-07T10:45:39Z"],["dc.date.available","2018-11-07T10:45:39Z"],["dc.date.issued","2000"],["dc.description.abstract","We have investigated the use of sub-10-fs near-infrared laser pulses to generate high-order harmonic radiation efficiently in the wavelength region between 30 to 10 nm. The ultrashort rise time of the driver pulses allows harmonics to be produced at low ionization levels and hence to grow coherently over propagation lengths becoming comparable to the XUV absorption lengths in the noble gas medium. As a result, absorption-limited harmonic generation has been extended to the 10-nm range for the first time. Harmonic conversion efficiencies of (3-4) x 10(-8) in the range of 10-13 nm in neon and some two orders of magnitude higher at around 30 nm in argon have been obtained in simple gas tube targets under these conditions. Preliminary focusing tests with 13-nm harmonic radiation have been carried out with a specially designed zoneplate and a spherical Mo/Si multilayer mirror and have resulted in spot sizes of about 2 microns. Our experiments aim at paving the way to nonlinear optics in the soft-X-ray regime."],["dc.identifier.isi","000088250600034"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47550"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","New york"],["dc.relation.conference","Ultrafast Optics 1999 Meeting"],["dc.relation.eventlocation","CTR STEFANO FRANSCINI, ASCONA, SWITZERLAND"],["dc.relation.issn","0946-2171"],["dc.title","Few-cycle-driven XUV laser harmonics: generation and focusing"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6478"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Journal of Applied Physics"],["dc.bibliographiccitation.lastpage","6480"],["dc.bibliographiccitation.volume","87"],["dc.contributor.author","Eimüller, T."],["dc.contributor.author","Kalchgruber, R."],["dc.contributor.author","Fischer, P."],["dc.contributor.author","Schutz, G."],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Schmahl, G."],["dc.contributor.author","Kohler, M."],["dc.contributor.author","Prugl, K."],["dc.contributor.author","Scholz, M."],["dc.contributor.author","Bammes, F."],["dc.contributor.author","Bayreuther, G."],["dc.date.accessioned","2018-11-07T10:53:53Z"],["dc.date.available","2018-11-07T10:53:53Z"],["dc.date.issued","2000"],["dc.description.abstract","A multilayered FeGd system sputtered on a Si3N4-membrane was used to demonstrate that magnetic transmission x-ray microscopy enables the imaging of the domain structure with high resolution in a quantitative way and in varying external magnetic fields. The field-dependent evolution of sub-100 nm out-of-plane magnetized domains, i.e., the transition from stripe into bubble domains, could be observed in detail. It has been shown that critical fields like the bubble collapse field can be described by a wall energy model. Contrary to the assumption of the theory, the magnetization does not remain perpendicular to the film plane in all cases. This is only true inside the bubbles. In the stripe domains the magnetic moments rotate. Their angle could be measured as a function of the external applied field. Internal stray fields can cause a rotation of moments leading to a contrast at the edges of stripe domains. The results indicate that the magnetization reversal in 3d/4f multilayers is not only determined by wall motions and is therefore more complex than previously assumed. (C) 2000 American Institute of Physics. [S0021-8979(00)80108-5]."],["dc.identifier.isi","000086728800192"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49444"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.publisher.place","Melville"],["dc.relation.conference","44th Annual Conference on Magnetism and Magnetic Materials"],["dc.relation.eventlocation","SAN JOSE, CALIFORNIA"],["dc.relation.issn","0021-8979"],["dc.title","Quantitative imaging of magnetization reversal in FeGd multilayers by magnetic transmission x-ray microscopy"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","849"],["dc.bibliographiccitation.journal","NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT"],["dc.bibliographiccitation.lastpage","852"],["dc.bibliographiccitation.volume","467"],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Niemann, B."],["dc.contributor.author","Thieme, Juergen"],["dc.contributor.author","Hambach, D."],["dc.contributor.author","Schneider, G."],["dc.contributor.author","Wiesemann, U."],["dc.contributor.author","Rudolph, D."],["dc.contributor.author","Schmahl, Günther A."],["dc.date.accessioned","2018-11-07T08:51:43Z"],["dc.date.available","2018-11-07T08:51:43Z"],["dc.date.issued","2001"],["dc.description.abstract","A new X-ray microscopic area is going to be established at the undulator U41 at BESSY II. This undulator provides an X-ray source of high brilliance in the energy range from 163 to 595 eV in the first harmonic. The microscopic area will comprise a transmission X-ray microscope, a scanning transmission X-ray microscope, and an X-ray test chamber. (C) 2001 Elsevier Science B.V. All rights reserved."],["dc.identifier.doi","10.1016/S0168-9002(01)00490-9"],["dc.identifier.isi","000171012800004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22006"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","7th International Conference on Synchrotron Radiation Instrumentation (SRI 2000)"],["dc.relation.eventlocation","TECH UNIV BERLIN, BERLIN, GERMANY"],["dc.relation.issn","0168-9002"],["dc.title","Instrumentation advances with the new X-ray microscopes at BESSY II"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","91"],["dc.bibliographiccitation.journal","Journal de Physique. IV, Proceedings"],["dc.bibliographiccitation.lastpage","94"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Eimüller, T."],["dc.contributor.author","Niemann, B."],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Fischer, P."],["dc.contributor.author","Englisch, U."],["dc.contributor.author","Vatter, R."],["dc.contributor.author","Wolter, C."],["dc.contributor.author","Seiffert, S."],["dc.contributor.author","Schmahl, G."],["dc.contributor.author","Schutz, G."],["dc.date.accessioned","2018-11-07T10:40:28Z"],["dc.date.available","2018-11-07T10:40:28Z"],["dc.date.issued","2003"],["dc.description.abstract","The first transmission x-ray microscope, dedicated for magnetic imaging is currently being built at the beamline ID-10 at BESSY II in Berlin using a helical undulator which provides photons with circular-, horizontal-, vertical. and linear polarization under various angles in the energy range between 0.2 and 2 keV. The microscope will use the x-ray circular and the x-ray linear magnetic dichroism as a magnetic contrast to study ferromagnetic and antiferromagnetic domains. A condenser with dynamical aperture synthesis will produce a reduced, spatially fixed, incoherent, and vertically dispersed image of the source, which will be matched to the aperture of the micro zone plate (MZP). In an object field of 15 mum by 15 mum a monochromaticity of E/DeltaE = 1700 will be obtained, which is sufficient for magnetic spectromicroscopy, enabling us to investigate lateral distributions of magnetic moments separated by different elements, chemical shifts and even by spin and orbital contributions. A solenoid and/or lithographically patterned microcoils will allow studying magnetization reversal processes on different time scales, down to a sub-nanoseconds level where precessional switching and damping mechanisms occur."],["dc.identifier.doi","10.1051/jp4:200300036"],["dc.identifier.isi","000183273900023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46307"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.conference","7th International Conference on X-Ray Microscopy"],["dc.relation.eventlocation","GRENOBLE, FRANCE"],["dc.relation.issn","1155-4339"],["dc.title","The magnetic transmission X-ray microscopy project at BESSY II"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","425"],["dc.bibliographiccitation.journal","Journal de Physique. IV, Proceedings"],["dc.bibliographiccitation.lastpage","428"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Knochel, C."],["dc.contributor.author","Thieme, Jürgen"],["dc.contributor.author","Gleber, Sophie-Charlotte"],["dc.contributor.author","Schneider, G."],["dc.contributor.author","Bates, W."],["dc.contributor.author","Schmahl, G."],["dc.date.accessioned","2018-11-07T10:40:31Z"],["dc.date.available","2018-11-07T10:40:31Z"],["dc.date.issued","2003"],["dc.description.abstract","X-ray microscopy allows the direct visualization of soil colloids in water. In combination with tomographic techniques it is possible to visualize the three dimensional distribution of the linear absorption coefficient of soil colloids and to investigate the surface amount and spatial arrangement of the particles. First experiments of Nontronite particles from the XM-1 are presented."],["dc.identifier.doi","10.1051/jp4:20030114"],["dc.identifier.isi","000183273900101"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46316"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.conference","7th International Conference on X-Ray Microscopy"],["dc.relation.eventlocation","GRENOBLE, FRANCE"],["dc.relation.issn","1155-4339"],["dc.title","Tomographic studies of nontronite particles in aqueous media"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"],["local.message.claim","2021-06-17T08:58:35.832+0000|||rp114751|||submit_approve|||dc_contributor_author|||None"],["local.message.claim","2021-06-17T08:59:15.976+0000|||rp114751|||submit_approve|||dc_contributor_author|||None"],["local.message.claim","2021-06-17T08:59:15.976+0000|||rp114751|||submit_approve|||dc_contributor_author|||None"]]

[["dc.bibliographiccitation.firstpage","861"],["dc.bibliographiccitation.journal","NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT"],["dc.bibliographiccitation.lastpage","863"],["dc.bibliographiccitation.volume","467"],["dc.contributor.author","Wiesemann, U."],["dc.contributor.author","Thieme, Jürgen"],["dc.contributor.author","Fruke, R."],["dc.contributor.author","Guttmann, Peter"],["dc.contributor.author","Niemann, B."],["dc.contributor.author","Rudolph, Dietbert H."],["dc.contributor.author","Schmahl, Günther A."],["dc.date.accessioned","2018-11-07T08:51:49Z"],["dc.date.available","2018-11-07T08:51:49Z"],["dc.date.issued","2001"],["dc.description.abstract","A new scanning transmission X-ray microscope for the soft X-ray region is under construction at the BESSY II storage ring. The radiation from the undulator U-41 is monochromatized with a monochromator consisting of a plane mirror and a plane grating with varied line density. For a high resolution image, the zone plate is scanned with a piezoelectric flexure stage. The X-ray flux in the focal spot will be of the order of 10(9) photons/s. The sample is located in air. A pn-CCD detector is used to measure the transmitted intensity. (C) 2001 Elsevier Science B.V. All rights reserved."],["dc.identifier.doi","10.1016/S0168-9002(01)00496-X"],["dc.identifier.isi","000171012800007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22027"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","7th International Conference on Synchrotron Radiation Instrumentation (SRI 2000)"],["dc.relation.eventlocation","TECH UNIV BERLIN, BERLIN, GERMANY"],["dc.relation.issn","0168-9002"],["dc.title","Construction of a scanning transmission X-ray microscope at the undulator U-41 at BESSY II"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]