13 research outputs found

    Flux dynamics and vortex phase diagram of the new superconductor MgB2MgB_2

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    Magnetic critical current density and relaxation rate have been measured on MgB2MgB_2 bulks from 1.6 K to TcT_c at magnetic fields up to 8 Tesla. A vortex phase diagram is depicted based on these measurement. Two phase boundaries Hirrbulk(T)H_{irr}^{bulk}(T) and Hirrg(T)H_{irr}^{g}(T) characterizing different irreversible flux motions are found. The Hirrbulk(T)H_{irr}^{bulk}(T) is characterized by the appearance of the linear resistivity and is attributed to quantum vortex melting induced by quantum fluctuation of vortices in the rather clean system. The second boundary Hirrg(T) H_{irr}^g(T) reflects the irreversible flux motion in some local regions due to either very strong pinning or the surface barrier on the tiny grains.Comment: 4 pages, 5 figure

    ATLAS detector and physics performance: Technical Design Report, 1

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    Expression of Hox Genes in the Nervous System of Vertebrates

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    ATLAS: technical proposal for a general-purpose p p experiment at the large hadron collider at CERN

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    ATLAS calorimeter performance

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    ATLAS computing technical proposal

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    ATLAS computing technical proposal

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