Exploració per tema "X-ray"

Ara es mostren els items 1-9 de 9

    • Development of the Detector Tray for the Wide Field Monitor of the Large Observatory For x-ray Timing (LOFT), a medium-class candidate mission in ESA´s Cosmic Vision 2015-2025. 

      Karelin, Dmitry (Universitat Politècnica de Catalunya, 2013-07-15)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      LOFT, the Large Observatory For X-ray Timing, has recently pass the ESA call as one of the four M3 mission candidates that will complete for a launch opportunity at the start of the 2020s. The primary goal of the mission ...

    • High flux table-top soft X-ray source driven by sub-2-cycle, CEP stable, 1.85 μm 1 kHz pulses for carbon K-edge spectroscopy 

      Cousin, S. L.; Silva, F.; Teichmann, S.; Hemmer, M.; Buades, B.; Biegert, Jens (OSA, 2014-09-15)
      Article
      Accés obert
      We report on the first table-top high flux source of coherent soft X-ray radiation up to 400 eV, operating at 1 kHz. This source covers the carbon K-edge with a beam brilliance of (4.3 ± 1.2) × 1015 photons/s/mm2/strad/10% ...

    • Mechanical simulations of the Wide Field Monitor instrument for the eXTP X-ray satellite 

      Carmona Peña, Alex (Universitat Politècnica de Catalunya, 2022-07-13)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      The Wide Field Monitor (WFM) is a coded mask instrument that is one of the four instruments that compose the scientific payload of the enhanced X-ray Timing and Polarimetry mission (eXTP), designed to study the state of ...

    • Optimization of a novel micro-opto-X-ray imaging lens 

      Ostadi, Hossein; Arroyo Balaguer, Marino; Prewett, P.D.; Jiang, K.C.; Huq, S.E. (2008-06)
      Article
      Accés obert
      A mechanically deformable reflection transmission MOEMS system is capable of focusing X-rays to sub micron spots. This paper considers the geometry of the proposed deformed slotted microcantilever lens element under thermally ...

    • Ordering kinetics evaluation of FeAl powders 

      Cinca i Luis, Núria; Isalgué Buxeda, Antonio; Auguet Sangrá, Carlota E.; Concustell, Amadeu; Cano, I. G.; Guilemany Casadamon, Josep Maria; Fauth, F. (2017-12-01)
      Article
      Accés obert
      In this study, time resolved X-ray diffraction experiments using synchrotron X-ray radiation have been performed to get insight on the time and temperature dependent atomic ordering of an intermetallic Fe-40Al (at.%) ...

    • Orientation of polylactic acid–chitin nanocomposite films via combined calendering and uniaxial drawing: Effect on structure, mechanical, and thermal properties 

      Singh, Shikha; Kumar Patel, Mitul; Geng, Shiyu; Teleman, Anita; Herrera, Natalia; Schwendemann, Daniel; Maspoch Rulduà, M. Lluïsa; Oksman, Kristiina (2021-12-06)
      Article
      Accés obert
      The orientation of polymer composites is one way to increase the mechanical properties of the material in a desired direction. In this study, the aim was to orient chitin nanocrystal (ChNC)-reinforced poly(lactic acid) ...

    • Prediction of Relevant Areas for Detection of Abnormalities in X-ray Images 

      Lorente Gómez, Iris (Universitat Politècnica de Catalunya, 2013-02-28)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Illinois Institute of Technology
      [ANGLÈS] This project belongs to the field of medical imaging and was motivated by the idea of elaborating a first approximation to automatic medical diagnosis. The principal objective of this study is, given an X-ray chest ...

    • Transient Attosecond Soft-X-Ray Spectroscopy in Layered Semi-Metals 

      Sidiropolous, T. P.H.; Di Palo, N.; Rivas, D. E.; Severino, S.; Reduzzi, M.; Buades, B.; Leon, I.; Cousin, S. L.; Hemmer, M.; Cocchi, C.; Pellegrin, E.; Herrero Martin, J.; Mañas-Valero, S.; Coronado, E.; Danz, T.; Draxi, C.; Uemoto, M.; Yabana, K.; Schultze, Martin; Wall, Simon; Picon, A.; Biegert, Jens (SPIE, 2020)
      Comunicació de congrés
      Accés obert
      X-ray absorption fine-structure (XAFS) spectroscopy is a well-established technique capable of extracting information about a material’s electronic and lattice structure with atomic resolution. While the near-edge region ...

    • X-ray determination of compressive residual Stresses in spring steel generated by high-speed water Quenching 

      Lozano de la Garza, Diego Emilio; Totten, George E.; Bedolla Gil, Yaneth; Guerrero Mata, Martha P.; Carpio Garza, Marcel Francisco; Martínez Cazares, Gabriela M. (Multidisciplinary Digital Publishing Institute (MDPI), 2019-04-01)
      Article
      Accés obert
      Automotive components manufacturers use the 5160 steel in leaf and coil springs. The industrial heat treatment process consists in austenitizing followed by the oil quenching and tempering process. Typically, compressive ...