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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    General relativity and gravitation 31 (1999), S. 863-868 
    ISSN: 1572-9532
    Keywords: TOPOLOGY CHANGE ; INFLATION
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We propose a modified form of the spontaneousbirth of the universe by quantum tunneling. It proceedsthrough topology change and inflation, to eventuallybecome a universe with closed spatial sections of negative spatial curvature and nontrivialglobal topology.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2019-04-02
    Description: The Transport Collaboration, consisting of researchers from institutions in France, Germany, Italy, and the USA, has established a program to make new measurements of nuclear interaction cross sections for heavy projectiles (Z greater than or equal to 2) in targets of liquid H2, He and heavier materials. Such cross sections directly affect calculations of galactic and solar cosmic ray transport through matter and are needed for accurate radiation hazard assessment. To date, the collaboration has obtained data using the Lawrence Berkeley Laboratory Bevalac HISS facility with 20 projectiles from He-4 to Ni-58 in the energy range 393-910 MeV/nucleon. Preliminary results from the analysis of these data are presented here and compared to other measurements and to cross section prediction formulae.
    Keywords: NUCLEAR AND HIGH-ENERGY PHYSICS
    Type: Life Sciences and Space Research 25 (2) Radiation Biology: Topical Meeting of the COSPAR Interdisciplinary Scientific Commission F of the COSPAR 29th Plenary Meeting, Washington, DC, Aug. 28-Sep. 5, 1 (ISSN 0273-1177); 14; 10; p. 825-830
    Format: text
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