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  • 1
    Unknown
    Charlottesville, Va : University of Virginia Library
    Keywords: Imagist poetry. ; American poetry., lcsh
    ISBN: 0-585-23348-9
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  • 2
    Unknown
    Charlottesville, Va : University of Virginia Library
    Keywords: Love poetry. ; American poetry., lcsh
    ISBN: 0-585-20458-6
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  • 3
    Unknown
    Charlottesville, Va : University of Virginia Library
    Keywords: Imagist poetry. ; American poetry., lcsh
    ISBN: 0-585-23320-9
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  • 4
    Monograph available for loan
    Monograph available for loan
    Hawthorn : Lonely Planet Publ.
    Associated volumes
    Call number: 1.8/M 92.0990
    In: Lonely Planet travel survival kit
    Type of Medium: Monograph available for loan
    Pages: 626 S.
    Edition: 5th ed.
    ISBN: 0864421702
    Series Statement: Lonely planet travel survival kit
    Classification: E.5.
    Location: Reading room
    Branch Library: GFZ Library
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  • 5
    Publication Date: 2011-08-24
    Description: We report new measurements of the composition and energy spectra of anomalous cosmic rays (ACRs) made with the MAST instrument of SAMPEX. The 82 deg orbit on SAMPEX allows MAST to survey the magnetic latitude distribution of energetic particles with greater than 15 MeV/nuc. Because ACRs are singly-charged, they have a much greater magnetic rigidity than solar energetic particles or galactic cosmic rays with the same energy/nuc, and can be observed to much lower latitude. This allows SAMPEX to employ the Earth's field as a magnetic filter to obtain a 'pure' sample of ACR nuclei, uncontaminated by solar particles or galactic cosmic rays. We report new measurements of the composition and energy spectra of 'anomalous' nuclei from He to Fe observed by this 'double spectrometer' approach. In particular, the energy spectrum of ACR oxygen is observed to extend to approximately 100 MeV/nucleon, which has implications for the ACR acceleration mechanism.
    Keywords: Space Radiation
    Type: International Solar Wind 8 Conference; 105; NASA-CR-199940
    Format: text
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  • 6
    Publication Date: 2019-07-13
    Description: New observations of low energy (approximately 1 to 200 MeV/nuc) cosmic rays measured by three newly launched experiments on Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) during 1992 and 1993 show the strong presence of anomalous cosmic ray (ACR) nitrogen and oxygen, well before the approaching solar minimum. When compared with ACR temporal variations over the past two solar cycles we find that the 1992-1993 fluxes are approximately 5 to 10 times their level at corresponding neutron monitor counting rates in 1969-1970 and 1985.
    Keywords: SPACE RADIATION
    Type: Geophysical Research Letters (ISSN 0094-8276); 20; 20; p. 2263-2266
    Format: text
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  • 7
    Publication Date: 2019-07-13
    Description: We have used data from the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX), Ulysses, Voyager 1, Voyager 2, and Pioneer 10 spacecraft to determine the radial and latitudinal gradients of anomalous cosmic ray oxygen at 10 MeV/nuc during the last half of 1993. These five spacecraft cover radial distances from 1 AU (SAMPEX) to 58 AU (P10) and latitudes to 41 deg S (Ulysses) and 32 deg N (V1). We find that the radial gradient is a decreasing function of radial distance, approximately r(exp -n), with n = 1.7 +/- 0.7. The large-scale radial gradient between the inner and outer heliosphere is much smaller than it was during the last solar minimum period in approximately 1987. The latitudinal gradient is small and positive, 1.3 +/- 0.4 %/deg, as opposed to the large and negative latitudinal gradients found during 1987, but similar to the small positive latitudinal gradient measured during 1976 for anomalous cosmic ray helium. These observations confirm that effects of curvature and gradient drift in the large scale magnetic field of the Sun are important for establishing the three-dimensional intensity distributions of these particles in the heliosphere during periods of solar minimum conditions.
    Keywords: SPACE RADIATION
    Type: Geophysical Research Letters (ISSN 0094-8276); 22; 4; p. 341-344
    Format: text
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  • 8
    Publication Date: 2019-07-17
    Description: The ENTICE experiment is one of two instruments which make up the HNX mission. The experimental goal of ENTICE is to measure with high precision the elemental abundances of all nuclei with 10〈=Z〈=82. This will enable us to distinguish between possible injection mechanisms for the galactic cosmic ray accelerator such-as those dependent upon volatility or first ionization potential, and to study the mix of nucleosynthetic processes that contribute to the galactic cosmic ray source. The ENTICE experiment utilizes the dE/dx-C method of charge determination and consists of silicon dE/dx detectors, Cherenkov detectors with two different refractive indices, and a scintillating fiber hodoscope. The geometrical factor of the instrument is 8m2.sr. We will present a description of the instrument and its expected performance based on beam tests and a balloon flight of a prototype instrument.
    Keywords: Space Radiation
    Type: International Cosmic Ray Conference; 7-15 Aug. 2001; Hamburg; Germany
    Format: text
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  • 9
    Publication Date: 2019-07-18
    Description: The primary scientific objectives of HNX, which was recently selected by NASA for a Small Explorer (SMEX) Mission Concept Study, are to measure the age of the galactic cosmic rays (GCR) since nucleosynthesis, determine the injection mechanism for the GCR accelerator (Volatility or FIP), and study the mix of nucleosynthetic processes that contribute to the source of GCRs. The experimental goal of HNX is to measure the elemental abundances of all individual stable nuclei from neon through the actinides and possibly beyond. HNX is composed of two instruments: ECCO, which measures elemental abundances of nuclei with Z greater than or equal to 72, and ENTICE. which measures elemental abundances of nuclei with Z between 10 and 82. We describe the mission and the science that can be addressed by HNX.
    Keywords: Space Radiation
    Type: 27th ICRC 2001 Conference; 7-15 Aug. 2001; Hamburg; Germany
    Format: text
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  • 10
    Publication Date: 2019-07-19
    Description: We report the first observations of energetic neutral atoms (ENAs) from a solar flare/coronal mass ejection event. The observations were made during the December 5, 2006 X9 solar flare, located at E79, by the Low Energy Telescopes (LETs) on the STEREO A and B spacecraft. Within 1-2 hours of the flare onset, both LETs observed a sudden burst of 1.6 to 15 MeV protons arriving hours before the onset of the main solar energetic particle (SEP) event at Earth. More than 70% of these particles arrived from a longitude within +-10 degrees of the Sun. The derived emission profile at the Sun lasted for more than an hour and had a profile remarkably similar to the GOES soft X-ray profile. The observed arrival directions and energy spectrum argue strongly that the particle events 〈5 MeV were due to energetic neutral hydrogen atoms that were stripped of their electrons upon entering the LET sensor. To our knowledge, this is the first reported observation of ENA emission from a solar flare/coronal mass ejection. We discuss possible origins for the production of ENAs in solar events, including charge-transfer reactions involving both flare and shock-accelerated protons. Assuming isotropic emission, we find that ~2 x 10E28 ENAs escaped from the Sun in the upper hemisphere. Based on the 2.2 MeV gamma-ray emission observed by RHESSI in this event, and using measured and theoretical cross sections, we estimate that ~3 x 10E31 ENAs with 1.8 - 5 MeV could be produced by protons accelerated in the flare. CME-driven shock acceleration is also a possible ENA source, but unfortunately there were no CME observations available from this event. Taking into account ENA losses, we conclude that the observed ENAs were most likely produced in the high corona at heliocentric distances 1.6 solar radii.
    Keywords: Astrophysics
    Type: M09-0558 , 31st International Cosmic Ray Conference (ICRC); 7 - 15 Jul. 2009; Lodz; Poland
    Format: text
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