Strahlcharakterisierung Von Freie Elektronen Lasern Im Weichen R Ntgen Spektralbereich
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Strahlcharakterisierung Von Freie Elektronen Lasern Im Weichen R Ntgen Spektralbereich
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Author : Bernhard Flöter
language : de
Publisher: Universitätsverlag Göttingen
Release Date : 2012
Strahlcharakterisierung Von Freie Elektronen Lasern Im Weichen R Ntgen Spektralbereich written by Bernhard Flöter and has been published by Universitätsverlag Göttingen this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
In den letzten Jahren haben mehrere Freie-Elektronen-Laser (FEL) im Röntgen-Spektralbereich den Nutzerbetrieb aufgenommen. Sie erzeugen 10-100 Femtosekunden lange Pulse mit hohem transversalen Kohärenzgrad und schmalbandigem Frequenzspektrum und erreichen gegenüber einfacher Undulatorstrahlung eine etwa zehn Größenordnungen höhere Spitzenbrillanz. Ein Hartmann-Wellenfrontsensor wurde für den EUV- und weichen Röntgen-Spektralbereich entwickelt, der bezogen auf die Wellenfrontrauigkeit wrms im Einzelpuls bei der Wellenlänge lambda 13nm die Wiederholgenauigkeit lambda/116 erreicht und an den Freie-Elektronen- Lasern FLASH in Hamburg und LCLS in Stanford zur Wellenfrontmessung und Strahlcharakterisierung eingesetzt wurde. Es wurden typische, durch den SASE- Erzeugungsprozess der Strahlung bedingte Schwankungen des Strahldurchmessers, der Strahllage und der Intensität festgestellt. Die Strahlqualität der einzelnen Pulse ist hoch mit Beugungsmaßzahl nahe eins. Durch Kontrolle und Justage der optischen Elemente, insbesondere der fokussierenden Spiegel, wurden die Strahleigenschaften an den Beamlines optimiert. Vergleichende Strahlprofilmessungen mittels einer EUV-Kamera um die Strahltaille bestätigen die aus der Hartmann-Messung gewonnenen Strahlparameter. Eine Rekonstruktion der Wignerfunktion des Strahls liefert zusätzliche Informationen über den Kohärenzgrad.
Radiation Characteristics Of Extreme Uv And Soft X Ray Sources
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Author : Tobias Mey
language : en
Publisher: Göttingen University Press
Release Date : 2015
Radiation Characteristics Of Extreme Uv And Soft X Ray Sources written by Tobias Mey and has been published by Göttingen University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Electromagnetic radiation in the extreme UV and soft x-ray spectral range is of steadily increasing importance in fundamental research and industrial applications. An optimum use of the available photons can only be achieved under condition of a comprehensive beam characterization. Following that goal, this work addresses the pathway of extreme UV and soft x-ray radiation from its generation, through the beam transport by the beamline to the probe position. Experimentally, those aspects are optimized at a laser-produced plasma source and at an arrangement for the generation of high-harmonics. Additionally, the coherence of laser beams is analyzed by measurements of the Wigner distribution function. This method is applied to the photon beam of the free-electron laser FLASH, resulting in the entire characterization of its propagation properties.
Femtosekundenlaser
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Author : Klemens Jesse
language : de
Publisher: Springer-Verlag
Release Date : 2016-05-31
Femtosekundenlaser written by Klemens Jesse and has been published by Springer-Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-31 with Technology & Engineering categories.
Das Buch beschreibt die Grundlagen der Femtosekundenlaser, d.h. Strahlungsquellen mit ganz neuen Möglichkeiten in Technik, Chemie, Produktion und Medizin. Neben etablierten Verfahrenstechniken kommen modernste Einsatzgebiete des Zeitmikroskops, das zur direkten Beobachtung von Elektronen dient, zur Sprache. Es gibt eine Hierarchie der Zeit im Bereich der Chemie und Biologie, und der Femtosekundenlaser hilft, die Korrelation mit den jeweils eigenen Zeitkonstanten der untersuchten Übergänge herzustellen. Neben den neuartigen Gebieten Femtochemie, Femtonik und Attowissenschaften werden spezielle Anwendungen an der Grenze von Forschung und Theorie erläutert. 1999 gab es den Nobelpreis für Ahmed Zewail für seine Erfolge um das Gebiet der Femtochemie. Am 20. Dezember 2013 hat die UN-Generalversammlung das Jahr 2015 als „Internationales Jahr des Lichts und der lichtbasierten Technologien“ ausgerufen. Das Jahr des Lichts „soll an die Bedeutung von Licht als elementare Lebensvoraussetzung für Menschen, Tiere und Pflanzen und daher auch als zentraler Bestandteil von Wissenschaft und Kultur erinnern“. Heute gilt die Femtosekundentechnologie als der Innovations- und Wirtschaftsmotor der Zukunft und wird viele Arbeitsplätze in der Industrie sichern helfen. Neben der Zahn- und Krebsmedizin sowie Augenheilkunde ist der Femtosekundenlaser auch bei industriellen Anwendungen nicht mehr wegzudenken. Man kann Werkstoffstrukturen im Nanometerbereich mit einem Ti:Saphir-Femtosekundenlaser herstellen. Ein Ausblick auf das nächste Technik-Zeitalter – das des Lichts – wird mit einem abschließenden kleinen Lexikonteil und Literaturzitaten gegeben.
Sensors In Science And Technology
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Author : Ekbert Hering
language : en
Publisher: Springer Nature
Release Date : 2022-01-21
Sensors In Science And Technology written by Ekbert Hering and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-21 with Technology & Engineering categories.
Sensors are used to measure physical, chemical and biological quantities. The book offers a comprehensive overview of physical principles, functions and applications of sensors. It is structured according to the fields of activity of sensors and shows their application by means of typical examples. Measured variables that can be recorded by sensors are e.g. mechanical, dynamic, thermal, electrical and magnetic. Furthermore, optical and acoustical sensors are discussed in detail in the book. The sensor signals are recorded, processed and converted into control signals for actuators. Such sensor systems are also presented.
Ultrafast Phenomena Xvi
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Author : Paul Corkum
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-03-23
Ultrafast Phenomena Xvi written by Paul Corkum and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03-23 with Science categories.
Ultrafast Phenomena XVI presents the latest advances in ultrafast science, including both ultrafast optical technology and the study of ultrafast phenomena. It covers picosecond, femtosecond and attosecond processes relevant to applications in physics, chemistry, biology, and engineering. Ultrafast technology has a profound impact in a wide range of applications, amongst them biomedical imaging, chemical dynamics, frequency standards, material processing, and ultrahigh speed communications. This book summarizes the results presented at the 16th International Conference on Ultrafast Phenomena and provides an up-to-date view of this important and rapidly advancing field.
Analytical Applications Of Nuclear Techniques
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Author :
language : en
Publisher: IAEA
Release Date : 2004
Analytical Applications Of Nuclear Techniques written by and has been published by IAEA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Business & Economics categories.
The IAEA has compiled this overview of current applications of nuclear analytical techniques (NATs). The contributions included in this book describe a variety of nuclear techniques and applications, such as those in the fields of environment and health, industrial processes, non-destructive testing, forensic and archaeological investigations, cosmochemistry and method validation. The techniques covered range from classical instrumental neutron activation analysis (INAA), its radiochemical derivative RNAA, in-beam methods such as prompt y neutron activation analysis (PGNAA) and accelerator mass spectrometry (AMS), to X ray fluorescence (XRF) and proton induced X ray emission (PIXE) spectroscopy. Isotopic techniques to investigate element behaviour in biology and medicine, and also to validate other non-nuclear analytical techniques, are described. Destructive and non-destructiveapproaches are presented, along with their use to investigate very small and very large samples, archaeological samples and extraterrestrial samples. Several nuclear analytical applications in industry are described that have considerable socioeconomic impact wherever they can be implemented.
Earth Story
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Author : Simon Lamb
language : en
Publisher:
Release Date : 1998
Earth Story written by Simon Lamb and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Earth categories.
Accompanying an eight-part BBC2 TV series, this text argues that the Earth is more than simply our birthplace, it is the thing that gave us birth. The book takes the reader on the journey our planet has undergone over the the last four billion years - to a time when there was no dry land.
Damage To Vuv Euv And X Ray Optics
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Author : Libor Juha
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 2007
Damage To Vuv Euv And X Ray Optics written by Libor Juha and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Science categories.
Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Hochschmelzende Metalle
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Author : F. Benesovsky
language : de
Publisher:
Release Date : 1959
Hochschmelzende Metalle written by F. Benesovsky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Heat resistant alloys categories.
The Age Of The Earth
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Author : Arthur Holmes
language : en
Publisher:
Release Date : 1913
The Age Of The Earth written by Arthur Holmes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1913 with Earth categories.