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  • EARTH RESOURCES AND REMOTE SENSING  (6)
  • Atomic and molecular processes in external fields, including interactions with strong fields and short pulses  (2)
  • Condensed Matter: Electronic Properties, etc.  (1)
  • ELECTRONIC EQUIPMENT  (1)
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  • 1
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    Sum rules for the polarization correlations in photoionization and bremsstrahlung (2016)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2016-05-24
    Beschreibung: Author(s): R. H. Pratt, R. A. Müller, and A. Surzhykov The polarization correlations in doubly differential cross sections are investigated for photoionization and ordinary bremsstrahlung. These correlations describe the polarization transfer between incident light and ejected photoelectrons as well as between an incoming electron beam and bremsstrahlun… [Phys. Rev. A 93, 053421] Published Mon May 23, 2016
    Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
    Standort Signatur Erwartet Verfügbarkeit
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    AKTUELLE ARTIKEL
  • 2
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    Two-color above-threshold ionization of atoms and ions in XUV Bessel beams and intense laser light (2016)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2016-11-24
    Beschreibung: Author(s): D. Seipt, R. A. Müller, A. Surzhykov, and S. Fritzsche The two-color above-threshold ionization (ATI) of atoms and ions is investigated for a vortex Bessel beam in the presence of a strong near-infrared (NIR) light field. While the photoionization is caused by the photons from the weak but extreme ultraviolet (XUV) vortex Bessel beam, the energy and ang… [Phys. Rev. A 94, 053420] Published Wed Nov 23, 2016
    Schlagwort(e): Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
    Print ISSN: 1050-2947
    Digitale ISSN: 1094-1622
    Thema: Physik
    Publiziert von American Physical Society (APS)
    Standort Signatur Erwartet Verfügbarkeit
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    AKTUELLE ARTIKEL
  • 3
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    Charge Order in LuFe_{2}O_{4}: An Unlikely Route to Ferroelectricity (2012)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2012-05-02
    Beschreibung: Author(s): J. de Groot, T. Mueller, R. A. Rosenberg, D. J. Keavney, Z. Islam, J.-W. Kim, and M. Angst We present the refinement of the crystal structure of charge-ordered LuFe 2 O 4 , based on single-crystal x-ray diffraction data. The arrangement of the different Fe-valence states, determined with bond-valence-sum analysis, corresponds to a stacking of charged Fe bilayers, in contrast with the polar bi... [Phys. Rev. Lett. 108, 187601] Published Tue May 01, 2012
    Schlagwort(e): Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Digitale ISSN: 1079-7114
    Thema: Physik
    Publiziert von American Physical Society (APS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Remote profiling of lake ice using an S-band short-pulse radar aboard an all-terrain vehicle (1976)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: A short-pulse (one nanosecond) S-band radar system was developed to supplement the information obtained with the aid of the SLAR system of the Great Lakes ice information system. It is the objective of the ice information system to aid in extending the winter navigation season. The SLAR imagery cannot be interpreted directly to obtain information concerning the thickness of the ice. This information is to be provided by a remote ice measuring system utilizing nanosecond radar pulses. A description is given of investigations in which such a system was installed on a C-47 aircraft. In other studies reported an S-band short-pulse radar was mounted on an all-terrain vehicle.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: Radio Science; 11; Apr. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Measurement of lake ice thickness with a short-pulse radar system (1976)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Measurements of lake ice thickness were made during March 1975 at the Straits of Mackinac by using a short-pulse radar system aboard an all-terrain vehicle. These measurements were compared with ice thicknesses determined with an auger. Over 25 sites were explored which had ice thicknesses in the range 29 to 60 cm. The maximum difference between radar and auger measurements was less than 9.8 percent. The magnitude of the error was less than + or - 3.5 cm. The NASA operating short-pulse radar system used in monitoring lake ice thickness from an aircraft is also described.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TN-D-8189 , E-8573
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 6
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    Remote profiling of lake ice using an S-band short pulse radar aboard an all-terrain vehicle (1975)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: An airborne short-pulse radar system to measure ice thickness was designed. The system supported an effort to develop an all-weather Great Lakes Ice Information System to aid in extending the winter navigation season. Experimental studies into the accuracy and limitations of the system are described. A low power version was operated from an all-terrain vehicle on the Straits of Mackinac during March 1975. The vehicle allowed rapid surveying of large areas and eliminated the ambiguity in location between the radar system and the ground truth ice auger team. It was also possible to the effects of snow cover, surface melt water, pressure ridging, and ice type upon the accuracy of the system. Over 25 sites were explored which had ice thicknesses from 29 to 60 cm. The maximum radar overestimate was 9.8 percent, while the maximum underestimate was 6.6 percent. The average error of the 25 measurements was 0.1 percent.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TM-X-71808 , E-8502 , Subsurface Probing Session of the International Union of Radio Science Meeting; Oct 20, 1975 - Oct 23, 1975; Boulder, CO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Great Lakes all-weather ice information system (1975)
    In:  CASI
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A system is described which utilizes an X-band Side-Looking-Airborne-Radar (SLAR) for determining type, location, and aerial distribution of the ice cover in the Great Lakes and an airborne, S-band, short pulse radar for obtaining ice thickness. The SLAR system is currently mounted aboard a U.S. Coast Guard C-130B aircraft. Digitized SLAR data are relayed in real-time via the NOAA-GOES-1 satellite in geosynchronous orbit to the U.S. Coast Guard Ice Center in Cleveland, Ohio. SLAR images along with hand-drawn interpretative ice charts for various winter shipping areas in the Great Lakes are broadcast to facsimile recorders aboard Great Lakes vessels. The operational aspects of this ice information system are being demonstrated by NASA, U.S. Coast Guard, and NOAA/National Weather Service. Results from the 1974-75 winter season demonstrated the ability of this system to provide all-weather ice information to shippers in a timely manner.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: NASA-TM-X-71815 , Intern. Symp. on Remote Sensing of the Environment; Oct 06, 1975 - Oct 10, 1975; Ann Arbor, MI; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Low-temperature thermionic emitter Interim scientific report, 9 Feb. 1968 - 8 Feb. 1969 (1969)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Performance tests on alkaline earth oxide electron emitters at low temperatures
    Schlagwort(e): ELECTRONIC EQUIPMENT
    Materialart: NASA-CR-86159
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Great Lakes all-weather ice information system (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The all-weather ice information system described uses the X-band side-looking airborne radar to determine the aerial distribution, location, and type of ice cover in the Great Lakes and an airborne S-band short-pulse radar to determine the ice thickness. Results from the 1974-1975 winter season demonstrated the ability of the system to provide all-weather ice information to shippers at the required time.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: International Symposium on Remote Sensing of the Environment; Oct 06, 1975 - Oct 10, 1975; Ann Arbor, MI
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 10
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    Remote profiling of lake ice using an S-band short-pulse radar aboard an all-terrain vehicle (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: The airborne short-pulse radar system described was developed to measure ice thickness in an attempt to extend the winter navigation system as a means of reducing coal and ore shipping costs. Experimental studies of the accuracy and limitations of the system are discussed, and measurements made at 25 sites are compared. The radar system was found to provide accurate lake ice thickness measurements that were not affected by snow cover or adverse weather conditions. Surface melting and rain, however, preclude measurements.
    Schlagwort(e): EARTH RESOURCES AND REMOTE SENSING
    Materialart: International Union of Radio Science Meeting; Oct 20, 1975 - Oct 23, 1975; Boulder, CO
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
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