TY - JOUR A1 - Bjeoumikhov, A. A1 - Erko, M. A1 - Bjeoumikhova, Zemfira A1 - Erko, A. A1 - Snigireva, I. A1 - Snigirev, A. A1 - Wolff, Timo A1 - Mantouvalou, I. A1 - Malzer, W. A1 - Kanngießer, B. T1 - Capillary µFocus X-ray lenses with parabolic and elliptic profile KW - Synchrotron radiation KW - Capillary optics KW - Beamline optics PY - 2008 DO - https://doi.org/10.1016/j.nima.2008.01.087 SN - 0168-9002 SN - 0167-5087 VL - 587 IS - 2-3 SP - 458 EP - 463 PB - North-Holland CY - Amsterdam AN - OPUS4-18922 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Characterization of polycapillary halflenses in two directions T2 - BESSY User Meeting 2008 CY - Berlin, Germany DA - 2008-12-04 PY - 2008 AN - OPUS4-18935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Characterization of polycapillary halflenses in two directions T2 - European Conference on X-Ray Spectrometry CY - Dubrovnik, Croatia DA - 2008-06-16 PY - 2008 AN - OPUS4-18936 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hahn, Oliver A1 - Bretz, Simone A1 - Hagnau, Carola A1 - Ranz, Hans-Jörg A1 - Wolff, Timo T1 - Pigments, dyes, and black enamel - the colorants of reverse paintings on glass N2 - Nondestructive analyses of medieval reverse paintings on glass revealed the same dyes and pigments customarily used in panel paintings. However, there is one exception: the black colorant is not a carbon-based pigment, but black enamel. In this respect, the stylistic as well as the technical influence of stained glass artwork can clearly be seen on reverse paintings on glass. However, there is a crucial difference: in reverse paintings, the black enamel is not fired onto the glass but painted (cold painting). Additional analyses confirmed these findings. Based on these results, the art form "reverse painting on glass" has technically to be characterized as a mixture of "stained glass" and "panel painting" that nonetheless develops into a genre of its own. KW - Archaeometry KW - Cultural heritage KW - Non-destructive testing PY - 2009 DO - https://doi.org/10.1007/s12520-009-0021-4 SN - 1866-9557 SN - 1866-9565 VL - 1 IS - 4 SP - 263 EP - 271 PB - Springer CY - Berlin ; Heidelberg AN - OPUS4-20877 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wolff, Timo A1 - Mantouvalou, I. A1 - Malzer, W. A1 - Nissen, J. A1 - Berger, D. A1 - Zizak, I. A1 - Sokaras, D. A1 - Karydas, A. A1 - Grlj, N. A1 - Pelicon, P. A1 - Schütz, R. A1 - Zitniki, M. A1 - Kanngießer, B. T1 - Performance of a polycapillary halflens as focussing and collecting optic - a comparison N2 - Polycapillary halflenses are widely used to focus X-ray radiation onto a small spot. Additionally they can reduce the field of view of a semiconductor detector when placed in front of one. In 3D micro X-ray fluorescence spectroscopy (3D Micro-XRF) with synchrotron radiation, two polycapillary halflenses are used in a confocal geometry. Up until now, characterization measurements in the focal plane have only been performed in the case of the lens focusing parallel radiation. Assumptions have been made, that in the other case, when isotropic radiation from a spot source is transported to a detector, the acceptance distribution in the focal plane is also Gaussian. We performed measurements with an electron beam as well as a proton beam which confirm this assumption. In addition, a comparison between measurements in collecting and focusing mode show differences in spot size and transmission. These differences exemplify the fact that there is not one global spot size or transmission function of a polycapillary halflens. Illumination and divergence effects can alter both characteristic lens parameters. PY - 2009 DO - https://doi.org/10.1039/b817828c SN - 0267-9477 SN - 1364-5544 VL - 24 SP - 669 EP - 675 PB - Royal Society of Chemistry CY - London AN - OPUS4-19415 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wolf, U. A1 - Hahn, Oliver A1 - Wolff, Timo ED - Wollny, P. T1 - Wer schrieb was? Röntgenfluoreszenzanalyse am Autograph von J.S. Bachs Messe in h-Moll BWV 232 KW - Kulturgut KW - Röntgenfluoreszenzanalyse PY - 2009 SN - 0084-7682 VL - 95 SP - 117 EP - 133 PB - Evang. Verl.-Anst. CY - Leipzig AN - OPUS4-20795 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hahn, Oliver A1 - Kanngießer, Birgit A1 - Wilke, M. A1 - Malzer, W. A1 - Nekat, B. A1 - Wolff, Timo A1 - Erko, A. T1 - Influence of Restoration Treatments on Ink Corroded Manuscripts KW - X-ray fluorescence analysis KW - X-ray absorption analysis KW - Cultural heritage KW - Sustainability PY - 2007 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annual_report_2006.pdf#page=205 SN - 0179-4159 SP - 205 EP - 207 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-14854 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo A1 - Hahn, Oliver A1 - Kanngießer, B. T1 - Investigation of the genesis of historical paper- and parchment-manuscripts by means of portable micro XRF T2 - TECHNART 2007, Non-destructive and microanalytical techniques in art and cultural heritage research CY - Lisbon, Portugal DA - 2007-04-25 PY - 2007 AN - OPUS4-14835 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hahn, Oliver A1 - Wolff, Timo A1 - Feistel, H.-O. A1 - Rabin, Ira A1 - Beit-Arié, M. T1 - The Erfurt Hebrew Giant Bible and the Experimental XRF Analysis of Ink and Plummet Composition KW - Cultural heritage KW - Archaeometry KW - Micro-XRF KW - Quantification KW - Iron gall ink KW - Parchment PY - 2007 SN - 0753-5015 IS - 51 SP - 16 EP - 29 PB - Gazette CY - Villejuif AN - OPUS4-17730 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wolff, Timo A1 - Rabin, Ira A1 - Montouvalou, I. A1 - Kanngießer, B. A1 - Malzer, W. A1 - Kindzorra, Emanuel A1 - Hahn, Oliver T1 - Provenance studies on Dead Sea scrolls parchment by means of quantitative micro-XRF N2 - In this study, we address the question of the provenance and origin of the Dead Sea Scrolls manuscripts. A characteristic low ratio of chlorine to bromine, corresponding to that of the Dead Sea water, may serve as an indicator for local production. For this aim we developed a non-destructive procedure to determine the Cl/Br ratio in the parchment of these manuscripts. Micro-X-ray fluorescence (µ-XRF) measurements of a large number of parchment and leather fragments from the Dead Sea Scrolls were analyzed with a routine we developed based on fundamental parameter quantification. This routine takes into account the absorption of the collagen matrix and the influence of the different sample thicknesses. To calculate the representative Cl/Br ratio for each fragment, we investigated the lateral homogeneity and determined the total mass deposition using the intensity of the inelastically scattered, characteristic tube radiation. The distribution of the Cl/Br ratios thus obtained from the µ-XRF measurements make it possible to distinguish fragments whose origin lies within the Dead Sea region from those produced in other locations. KW - Fundamental parameter quantification KW - Samples of intermediated thickness KW - Chlorine to bromine ratio KW - Scatter peak evaluation KW - Dark matrix KW - Inorganic traces KW - Archaeometry KW - Fine arts KW - Inorganic compounds KW - Trace elements KW - X-ray spectroscopy PY - 2012 DO - https://doi.org/10.1007/s00216-011-5270-2 SN - 1618-2642 SN - 1618-2650 VL - 402 IS - 4 SP - 1493 EP - 1503 PB - Springer CY - Berlin AN - OPUS4-25511 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -