TY - CONF A1 - Radtke, Martin A1 - Reinholz, Uwe A1 - Riesemeier, Heinrich T1 - Spatially-resolved detection of iodine in natural plantinum-palladium nuggets: a comparison of PIXE and XRF T2 - European Conference on X-ray Spectrometry CY - Figueira da Foz, Portugal DA - 2010-06-20 PY - 2010 AN - OPUS4-21073 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin A1 - Reinholz, Uwe A1 - Riesemeier, Heinrich T1 - Spatially-resolved detection of iodine in natural platinum-palladium nuggets: a comparison of PIXE and XRF T2 - European Conference on X-ray Spectrometry CY - Figueira da Foz, Portugal DA - 2010-06-20 PY - 2010 AN - OPUS4-21201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Slicing - A New Method For Non Destructive 3D Elemental Sensitive Characterization Of Materials T2 - Fifth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - NEW INVESTIGATIONS WITH NANOGRAM MULTI-ELEMENT REFERENCE SAMPLES FOR XRF AND TXRF ANALYSIS T2 - Denver X-Ray Conference CY - Westminster, CO, USA DA - 2013-08-05 PY - 2013 AN - OPUS4-29864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - THE IDEAL SPECIMENT FOR TOTAL REFLECTION X-RAY FLUORESCENCE (TXRF) ANALYSIS: RESULTS FROM SIMULATIONS AND EXPERIMENTAL EVALUATION T2 - Denver X-Ray Conference CY - Westminster, CO, USA DA - 2013-08-05 PY - 2013 AN - OPUS4-29869 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - u-SRXRF characterization of Brazilian emeralds T2 - Fifth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29902 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Getting more efficient – The use of Bayesian optimization and Gaussian processes at the BAMline N2 - For more than 20 years, BAM is operating the BAMline at the synchrotron BESSY II in Berlin Adlershof. During this time, the complexity of the setup and the amount of data generated have multiplied. To increase the effectiveness and in preparation for BESSY III, algorithms from the field of machine learning are increasingly used. After a short introduction to BO and GP, the first example is the automatic alignment of our double multilayer monochromator (DMM). The second example is the optimization of measurement time in XRF scanning. T2 - SNI2022 conference CY - Berlin, Germany DA - 05.09.2022 KW - Artificial Inelligence KW - Machine Learning KW - Bayesian Statistics KW - Gaussian process KW - X-ray fluorescence KW - BAMline PY - 2022 AN - OPUS4-56255 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Slicing - A New Method For Non Destructive 3D Elemental Sensitive Characterization Of Materials T2 - International Congress on X-Ray Optics and Microanalysis CY - Hamburg, Germany DA - 2013-09-02 PY - 2013 AN - OPUS4-29897 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Investigation on fire gilding using XRF and NAA N2 - Fire-gilding or amalgam gilding is a historical technique for the gilding of objects. The object to be gilded is coated with an amalgam (a solution of gold (Au) in mercury (Hg)). By heating, the largest part of the Hg is subsequently evaporated and there remains a gold layer, containing still detectable amounts of Hg. The information on the used gilding technique might be crucial for the conservation and preservation of archaeological objects. Therefore, the main objective of this work is the detailed understanding of the behaviour of Hg under conditions of fire gilding. I.e. the understanding of the diffusion and evaporating behaviour of Hg, depending on parameters like substrate material (silver, copper, bronze, brass...), heating temperature and duration, and the resulting Hg depth profiles under these conditions. Secondary objective is the establishment of a measurement protocol for the unambiguous identification of different types of gilding, based solely on non-destructive methods, which can be applied to historical samples. In a first step, fire-gilded samples have been prepared on Cu and Ag sheet metal, respectively. Some of the gildings were produced by a professional goldsmith; another set of samples was produced under laboratory conditions. These samples have been examined with NAA (neutron activation analysis) and SR-XRF (synchrotron radiation induced X-ray fluorescence). First results of these measurements will be presented and discussed. T2 - Synchrotron Radiation and Neutrons in Art & Archaeology (SR2A) CY - Chicago, IL, USA DA - 06.09.2016 KW - Synchrotron KW - BAMline KW - XRF KW - Archaeometry PY - 2016 AN - OPUS4-38766 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - XANES Measurements On Glass Samples at the BAMline T2 - PRORA-Fachtagung "Prozessnahe Röntgenanalytik" CY - Berlin, Germany DA - 2005-11-24 PY - 2005 AN - OPUS4-11651 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo A1 - Hahn, Oliver A1 - Merchel, Silke A1 - Radtke, Martin A1 - Reinholz, Uwe A1 - Denker, A. T1 - Four non-destructive X-Ray methods analyzing corroded coins: A self-critical comparison T2 - Workshop Synchrotron Radiation in Art and Archaeology 2006 CY - Berlin, Germany DA - 2006-09-27 PY - 2006 AN - OPUS4-14229 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - SR-XRF analysis of trace amounts of Pt in gold alloys T2 - European Conference on X-ray Spectrometry CY - Dubrovnik, Croatia DA - 2008-06-16 PY - 2008 AN - OPUS4-17845 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - First in situ measurements with a newly developed SR-based ‘Single-shot‘ EXAFS set-up N2 - The newly developed EXAFS set-up comprises both time- and spatially-resolved EXAFS information simultaneously in a single-shot. This facile, stable and scanningless set-up was tested at the BAMline @ BESSY-II (Berlin, Germany). The primary broadband beam is generated by a filter/X-ray-mirror combination (bandpass). The transmitted beam through the sample is diffracted by a convexly bent Si (111) crystal, producing a divergent beam. This, in turn, is collected by an area sensitive detector based on a CCD camera, in a theta - 2 theta geometry. The first in situ measurements were successfully carried out and hereby presented. The case-study involved a well known reaction, in which structural changes are induced over time, and continuously measured. We were able to track structural changes within a 1s time resolution. T2 - European Conference on X-Ray Spectrometry (EXRS) CY - Gothenburg, Sweden DA - 19.06.2016 KW - Synchrotron KW - BAMline KW - EXAFS PY - 2016 AN - OPUS4-38807 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - SRXRF - measurements at non planar objects: Automatic determination of the angle of inicidence of the exciting X-ray T2 - Synchroton Radiation in Art & Avhaelogy (SR2A-2010) CY - Amsterdam, Netherlands DA - 2010-11-07 PY - 2010 AN - OPUS4-21378 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - First images of a colour X-ray camera, a detector with high resolution in energy and space T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-23082 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - ABSOPTION OF THE PRIMARY BEAM IN SR-TXRF ANALYSIS: EXPERIMENTAL VISUALIZATION USING A COLOR X-RAY CAMERA T2 - Fifth Joint BER II User Meeting CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29901 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - THE IDEAL SPECIMENT FOR TOTAL REFLECTION X-RAY FLUORESCENCE (TKRF) ANALYSIS:RESULTS FROM SIMULATIONS AMD EXPERIMENTAL EVALUATION T2 - Fifth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29903 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - ABSORBTION OF THE PRIMARY BEAM IN SR-TXRF ANALYSIS: EXPERIMENTAL VISUALIZATION USING A COLOR X-RAY CAMERA T2 - International Congress on X-Ray Optics and Microanalysis CY - Hamburg, Germany DA - 2013-09-02 PY - 2013 AN - OPUS4-29898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Analysis of trace elements in gold alloys by SR-XRF at high energy at the BAMline T2 - Ecaart 9 (European conference on accelerators in applied research and technology) CY - Florence, Italy DA - 2007-09-03 PY - 2007 AN - OPUS4-16399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - THE IDEAL SPECIMENT FOR TOTAL REFLECTION X-RAY FLUORESCENCE (TXRF) ANALYSIS: RESULTS FROM SIMULATIONS AND EXPERIMENTAL EVALUATION T2 - International Congress on X-Ray Optics and Microanalysis CY - Hamburg, Germany DA - 2013-09-02 PY - 2013 AN - OPUS4-29871 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Neues vom Berliner Goldhut: Analyse mit Sy-RFA T2 - Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen, SNI 2010 CY - Berlin, Germany DA - 2010-02-24 PY - 2010 AN - OPUS4-20097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - X-ray camera with high energy and spital resolution: Sterography with a colour X-ray camera T2 - European Conference on X-ray Spectrometry CY - Figueira da Foz, Portugal DA - 2010-06-20 PY - 2010 AN - OPUS4-21205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin T1 - Energy Resolved Imaging with Coded Apertures N2 - Our aim is to develop a simple and inexpensive method for full field X-ray fluorescence imaging.We combine an energydispersive array detector with a coded aperture to obtain high resolut ion images. To obtain the information from the recorded image a reconstruction step is necessary. The reconstruction methods we have developed, were tested on simulated data and then applied to experimental data. The first tests were carried out at the BAMline @BESSY II. This method enables the simultaneous detection of multiple elements,which is important e.g. in the field of catalysis. T2 - SRI 2021 CY - Online meeting DA - 28.3.2022 KW - Synchrotron KW - BAMline KW - Machine Learning KW - Coded Aperture PY - 2022 AN - OPUS4-56298 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -