Review

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2022-04-29
13:09
[PUBDB-2022-01933] Review/Journal Article
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Formation of the intermetallic phases Al$_{12}$Mg$_{17}$ and Al$_3$Mg$_2$ during heating of elemental Al-Mg composites studied by high-energy X-ray diffraction
The purpose of the present study is to track the formation of the intermetallic phases that form in the binary Al-Mg system and investigate their orientation relationships to the parent Al and Mg elements. Therefore, two compositions Al60Mg40 and Al40Mg60 (wt%), which are very suitable for studying the diffusion of Al in Mg and Mg in Al were heated from room temperature up to elevated temperatures below the melting point. [...]
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2022-01-10
12:54
OpenAccess [PUBDB-2022-00114] Review/Journal Article
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Evolution of ATLAS analysis workflows and tools for the HL-LHC era
25th International Conference on Computing in High-Energy and Nuclear Physics, vCHEP2021, OnlineOnline, France, 17 May 2021 - 21 May 20212021-05-172021-05-21 The European physical journal / Web of Conferences 251, 02002 - () [10.1051/epjconf/202125102002]  GO
The High Luminosity LHC project at CERN, which is expected to deliver a ten-fold increase in the luminosity of proton-proton collisions over LHC, will start operation towards the end of this decade and will deliver an unprecedented scientific data volume of multi-exabyte scale. This vast amount of data has to be processed and analysed, and the corresponding computing facilities must ensure fast and reliable data processing for physics analyses by scientific groups distributed all over the world. [...]
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2019-12-19
11:37
[PUBDB-2019-05512] Review

European accelerator-based photon sources join forces
Italy : Nature Reviews Materials ()  GO

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2019-05-09
15:40
[PUBDB-2019-02230] Review/Journal Article
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Unraveling the Reactivity of Minium toward Bicarbonate and the Role of Lead Oxides Therein
Understanding the reactivity of (semiconductor) pigments provides vital information on how to improve conservation strategies for works of art to avoid rapid degradation of the pigments. This study focuses on the photoactivity of minium (Pb$_3$O$_4$), a semiconductor pigment that gives rise to strong discoloration phenomena upon exposure to various environmental conditions. [...]
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2019-05-09
15:19
[PUBDB-2019-02229] Review/Journal Article
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Photochemistry of Artists’ Dyes and Pigments: Towards Better Understanding and Prevention of Colour Change in Works of Art
The absorptionof lightgivesapigmentits colourand its reasonforbeing,but it alsocreatesexcitedstates,that is,new moleculeswithanenergyexcessthat can be dissipatedthroughdegradationpathways.Photodegradationprocessesprovokelong-term,cumulativeand irre-versiblecolourchanges(fading,darkening,blanching) of whichthepredictionand preventionare challengingtasks.Ofall the environ-mentalrisksthat affectheritagematerials,light exposureis the onlyone that cannotbe controlledwithoutany impacton the optimaldis-playof the exhibit.Light-inducedalterationsare not onlyassociatedwiththe pigmentitselfbut also withits interactionswithsupport/binderand,in turn,are furthercomplicatedby the natureof the environ-mentalconditions.Inthis Minireviewwe investigatehowchemistry,encompassingmulti-scaleanalyticalinvestigationsof worksof art,computationalmodellingand physicaland chemicalstudiescontrib-utes to improveour predictionof artworkappearancebeforedegra-dationand to establisheffectivepreventiveconservationstrategies..
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2018-07-12
14:27
[PUBDB-2018-02586] Review/Journal Article
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Terahertzstrahlen dirigieren Elektronenpakete
Physik in unserer Zeit 49(4), 165 - 166 () [10.1002/piuz.201870406]  GO
Ultraschnelle Elektronenmikroskope und Röntgenstrahlungsquellen basieren auf beschleunigten und präzise geformten Elektronenpaketen. Unsere Gruppe am DESY konnte kürzlich zeigen, wie mit sehr hochfrequenter Strahlung im Terahertzbereich kompakte Bauelemente für die Elektronenbeschleunigung realisiert und mit leichter Abwandlung auch zur zeitlichen und räumlichen Pulsformung sowie Pulscharakterisierung verwendet werden können..
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2017-12-21
11:46
OpenAccess [PUBDB-2017-13944] Review/Book
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High Energy Density Irradiation With MAMI LINAC
8th International Particle Accelerator Conference, IPAC2017, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 20172017-05-142017-05-19 Geneva : JACoW, J.Phys.Conf.Ser. 874(2017), () [10.18429/JACoW-IPAC2017-TUPAB003]  GO
In order to build a positron source for the ILC, a high energy density irradiation is needed to test the used materials. At the MAMI linear accelerator such a radiation can be provided at different electron energies. [...]
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2017-12-18
13:44
OpenAccess [PUBDB-2017-13636] Review/Journal Article
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In situ monitoring metal-ligand exchange processes by optical spectroscopy and X-ray diffraction analysis: a review
Knowledge about the mechanisms involved in the structural development of solid materials at the atomic level is essential for designing rational synthesis protocols for these compounds, which may be used to improve desired technical properties, such as light emission, conductivity, magnetism, porosity or particle size, and may allow the tailored design of solid materials to generate the aforementioned properties. Recent technological advancements have allowed the combination of synchrotron-based in situ X-ray diffraction (XRD) with in situ optical spectroscopy techniques, providing researchers with remarkable opportunities to directly investigate structural changes during synthesis reactions [...]
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2015-04-13
10:46
[PUBDB-2015-01902] Review/Journal Article
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The Next Generation of Axion Helioscopes: The International Axion Observatory (IAXO)
13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013, AsilomarAsilomar, California, US, 8 Sep 2013 - 13 Sep 20132013-09-082013-09-13 Physics procedia 61, 193 - 200 () [10.1016/j.phpro.2014.12.031]  GO
The International Axion Observatory (IAXO) is a proposed 4th-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 – 10 keV energies in a strong magnetic field. IAXO will achieve a sensitivity to the axion-photon coupling gaγ down to a few ×10−12 GeV−1 for a wide range of axion masses up to ∼ 0.25 eV. [...]
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2014-09-11
10:37
[PUBDB-2014-03437] Review/Contribution to a book
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SXRD measurements of residual stresses in sintered diamond–cobalt composites
Materials Science Forum
MECASENS IV, WienWien, Austria, 24 Sep 2007 - 26 Sep 20072007-09-242007-09-26
Uetikon : Trans Tech Publ. 571-572, ()  GO
Diamond-cobalt composites are used for cutting tools. Residual stress after manufacturecan reduce the lifetime of such composite cutting tools and, hence, the stress state needs to be wellunderstood. [...]
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