Now showing items 1-20 of 143

  • Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell 

    Bjørndal, Erlend; Frøysa, Kjell-Eivind (IEEE, 2008-08-08)
    The known acoustic methods for obtaining the pressure reflection coefficient from a buffer rod based measurement cell are presented, along with 2 new generic approaches for measuring the pressure reflection coefficient ...
  • The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events 

    Alme, Johan; Andres, Y; Appelshauser, H; Bablok, Sebastian Robert; Bialas, N; Bølgen, Rikard; Bonnes, U; Bramm, R; Braun-Munzinger, P; Campagnolo, R; Christiansen, P; Dobrin, A; Engster, C; Fehlker, Dominik; Foka, Y; Frankenfeld, U; Gaardhoje, JJ; Garabatos, C; Glassel, P; Gutierrez, CG; Gros, P; Gustafsson, HA; Helstrup, Håvard; Hoch, M; Ivanov, M; Janik, R; Junique, A; Kalweit, A; Keidel, R; Kniege, S; Kowalski, M; Larsen, Dag Toppe; Lesenechal, Y; Lenoir, P; Lindegaard, N; Lippmann, C; Mager, M; Mast, M; Matyja, A; Munkejord, Magne; Musa, L; Nielsen, BS; Nikolic, V; Oeschler, H; Olsen, EK; Oskarsson, A; Osterman, L; Pikna, M; Rehman, A; Renault, G; Renfordt, R; Rossegger, S; Røhrich, Dieter; Røed, Ketil; Richter, Matthias; Rueshmann, G; Rybicki, A; Sann, H; Schmidt, HR; Siska, M; Sitar, B; Soegaard, C; Soltveit, HK; Soyk, D; Stachel, J; Stelzer, H; Stenlund, E; Stock, R; Strmen, P; Szarka, I; Ullaland, Kjetil; Vranic, D; Veenhof, R; Westergaard, J; Wiechula, J; Windelband, B (Elsevier, 2010-10-01)
    The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment ...
  • An altitude and distance correction to the initial fluence distribution of TGFs 

    Nisi, Ragnhild Schrøder; Østgaard, Nikolai; Gjesteland, Thomas; Collier, Andrew B. (Wiley, 2014-10)
    The source fluence distribution of terrestrial gamma ray flashes (TGFs) has been extensively discussed in recent years, but few have considered how the TGF fluence distribution at the source, as estimated from satellite ...
  • The BABAR detector: Upgrades, operation and performance 

    Eigen, Gerald; Stugu, Bjarne Sandvik; Sun, Liang; Aubert, Bernard; Asgeirsson, David J.; Atmacan, Hulya; Blinov, Vladimir E.; Bondioli, Mario; Brown, David Nathan; Buzykaev, Alexey; Campagnari, Claudio; Cheng, Chih-Hsiang; Druzhinin, Vladimir P.; Garra Tico, Jordi; Eisner, Alan M.; Gary, J. William; Golubev, Vladimir B.; Grauges, Eugeni; Hearty, Christopher; Hong, Tae Min; Kerth, Leroy T.; Khan, Akram; Kirby, David S.; Koch, Helmut; Kolomensky, Yury G.; Kovalskyi, Dmytro; Kravchenko, Evgeniy A.; Kroseberg, Jurgen; Lankford, Andrew J.; Lees, Jean-Pierre; Liu, Feng; Lockman, William S.; Long, Owen; Lynch, Gerald; Mandelkern, Mark A.; Martinez, Alfonso Joel; Mattison, Tom S.; McKenna, Janis A.; Richman, Jeffrey D.; Schroeder, Torsten; Schumm, Bruce Andrew; Seiden, Abe; Serednyakov, Sergey I.; Skovpen, Yuri I.; So, Rocky Y.; Solodov, Evgeni Petrovich; Tisserand, Vincent; Todyshev, Korneliy Yu.; Vitug, Gil M.; West, Christopher A.; BABAR, Collaboration (Elsevier, 2013-11-21)
    The BaBar detector operated successfully at the PEP-II asymmetric e+e− collider at the SLAC National Accelerator Laboratory from 1999 to 2008. This report covers upgrades, operation, and performance of the collider and the ...
  • Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway 

    De Souza, Gustavo Antonio; Leversen, Nils Anders; Målen, Hiwa; Wiker, Harald G (Elsevier, 2011-12-21)
    Correct protein compartmentalization is a key step for molecular function and cell viability, and this is especially true for membrane and externalized proteins of bacteria. Recent proteomic reports of Bacillus subtilis ...
  • Characteristics of the flank magnetopause: Cluster observations 

    Haaland, Stein; Reistad, Jone Peter; Tenfjord, Paul; Gjerloev, Jesper W.; Maes, Lukas; deKeyser, Johan; Maggiolo, Romain; Anekallu, Chrandrasehkar; Dorville, Nicolas (WileyAmerican Geophysical Union, 2014-11)
    The magnetopause is a current sheet forming the boundary between the geomagnetic field on one side and the shocked solar wind on the other side. This paper discusses properties of the low-latitude dawn and dusk flanks ...
  • Charged-particle multiplicity measurement in proton–proton collisions at √s = 0.9 and 2.36 TeV with ALICE at LHC 

    The ALICE Collaboration; Aamodt, K.; Abel, N.; Alme, Johan; Bablok, Sebastian Robert; Haaland, Øystein Senneset; Huang, M.; Kanaki, K.; Larsen, Dag Toppe; Nystrand, J.; Pommeresche, Bjørn; Skjerdal, Kyrre; Wagner, B. (Springer, 2010-07-12)
    Charged-particle production was studied in proton–proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |η|<1.4. In the central region ...
  • Charged-particle multiplicity measurement in proton–proton collisions at √s = 7 TeV with ALICE at LHC 

    The ALICE Collaboration; Aamodt, K.; Abel, N.; Abeysekara, U.; Alme, Johan; Bablok, Sebastian Robert; Fehlker, D.; Haaland, Øystein Senneset; Huang, M.; Larsen, Dag Toppe; Nystrand, J.; Ullaland, K.; Øvrebekk, G. (Springer, 2010-08-03)
    The pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy Ös=7s=7 TeV, were measured in the central pseudorapidity region ...
  • Climatology of aerosol optical properties in Northern Norway and Svalbard 

    Chen, Yi-Chun; Frette, Ø.; Stamnes, J. J.; Hamre, B. (European Geosciences Union, 2012-12-07)
    We present comparisons between estimates of the aerosol optical thickness and the °Angstr¨om exponent in Northern Norway and Svalbard based on data from AERONET stations at Andenes (69 ◦N, 16 ◦E, 379 m altitude) and ...
  • Cluster observations of a field aligned current at the dawn flank of a bursty bulk flow 

    Snekvik, Kristian; Haaland, Stein; Østgaard, Nikolai; Hasegawa, H.; Nakamura, R.; Takada, T.; Juusola, L.; Amm, O.; Pitout, F.; Rème, H.; Klecker, B.; Lucek, E. A. (European Geosciences Union, 2007-06-29)
    This article describes observations of a bursty bulk flow (BBF) in the outer central plasma sheet. The observations are made with the Cluster satellites, located approximately 19RE downtail, close to the midnight sector ...
  • Comparison of planar and 3D silicon pixel sensors used for detection of low energy antiprotons 

    Gligorova, Angela; Holmestad, Helga Margrete; Huse, Torkjell; Kaltenbacher, Thomas; Pacifico, Nicola; Røhne, Ole Myren; Sandaker, Heidi; Zmeskal, Johann (IEEE, 2014-12)
    The principle aim of the AEḡIS experiment at CERN is to measure the acceleration of antihydrogen due to Earth’s gravitational field. This would be a test of the Weak Equivalence Principle, which states that all bodies ...
  • Comparison of residual oil cluster size distribution, morphology and saturation in oil-wet and water-wet sandstone 

    Iglauer, Stefan; Fernø, Martin; Shearing, Paul; Blunt, Martin (Elsevier, 2012-06-01)
    We imaged an oil-wet sandstone at residual oil saturation (Sor) conditions using X-ray micro-tomography with a nominal voxel size of (9 μm)3 and monochromatic light from a synchrotron source. The sandstone was rendered ...
  • Confining the angular distribution of terrestrial gamma ray flash emission 

    Gjesteland, Thomas; Østgaard, Nikolai; Collier, A. B.; Carlson, B. E.; Cohen, M. B.; Lehtinen, N. G. (American Geophysical Union, 2011-11-11)
  • Correlations among elliptic flow parameter, impact parameter, and multiplicity 

    Zhou, Dai-Mei; Cheng, Yun; Yan, Yu-Liang; Dong, Bao-Guo; Sa, Ben-Hao; Csernai, Laszlo P. (Springer, 2010-09-01)
    The elliptic flow parameter, v2, in the Fourier expansion of the event-by-event charged-particle multiplicity azimuthal distribution in the momentum space is studied by taking into account the multiplicity fluctuations. ...
  • Dark matter and fundamental physics with the Cherenkov Telescope Array 

    Doro, M; Conrad, J.; Emmanoulopoulos, D.; Sanchez-Conde, M.A.; Barrio, JA; Birsin, E.; Bolmont, J.; Brun, P.; Colafrancesco, S.; Connell, S.H.; Contreras, JL; Daniel, M.K.; Fornasa, M.; Gaug, M.; Glicenstein, J.F.; Gonzalez-Munoz, A.; Hassan, T; Horns, D.; Jacholkowska, A; Jahn, C.; Mazini, R; Mirabal, N.; Moralejo, A; Moulin, E.; Nieto, D; Ripken, J.; Sandaker, Heidi; Schwanke, U; Spengler, G.; Stamerra, A; Viana, A.; Zechlin, H.S.; Zimmer, S. (Elsevier, 2013-03)
    The Cherenkov Telescope Array (CTA) is a project for a next-generation observatory for very high energy (GeV–TeV) ground-based gamma-ray astronomy, currently in its design phase, and foreseen to be operative a few years ...
  • Detection of low energy antiproton annihilations in a segmented silicon detector 

    Aghion, Stefano; Gligorova, Angela; Huse, Torkjell; Pacifico, Nicola; Røhne, Ole Myren; Sandaker, Heidi; Zavatarelli, S. (IOP Publishing, 2014-06)
    The goal of the AEḡIS experiment at the Antiproton Decelerator (AD) at CERN, is to measure directly the Earth’s gravitational acceleration on antimatter by measuring the free fall of a pulsed, cold antihydrogen beam. The ...
  • Determining the fibrillar orientation of bast fibres with polarized light microscopy: the modified Herzog test (red plate test) explained 

    Haugan, Einar; Holst, Bodil (JohnWiley & Sons Ltd on behalf of Royal Microscopical Society, 2013)
    The identification of bast fibre samples, in particular, bast fibres used in textiles, is an important issue in archaeology, criminology and other scientific fields. One of the characteristic features of bast fibres is ...
  • Diagnosing CP properties of the 2HDM 

    Grzadkowski, Bohdan; Øgreid, Odd Magne; Osland, Per (Springer, 2014-01)
    We have investigated a Two-Higgs-Doublet Model (2HDM), focusing on CP violation. Various scenarios with spontaneous and explicit breaking of CP have been considered. Some features of CP violation related to a choice of the ...
  • Direct two-photon double ionization of H2 

    Simonsen, A. S.; Sørngård, Stian Astad; Nepstad, Raymond; Førre, Morten (American Physical Society, 2012-06-05)
    We have studied the process of direct (nonsequential) two-photon double ionization of molecular hydrogen (H2). Solving the time-dependent Schr¨odinger equation by an ab initio method, total (generalized) and singlediffe ...
  • Dose distribution in the thyroid gland following radiation therapy of breast cancer-a retrospective study 

    Johansen, Safora; Reinertsen, K. V.; Knutstad, K.; Olsen, Dag R.; Fosså, S. D. (BioMed Central, 2011-06-09)
    Purpose: To relate the development of post-treatment hypothyroidism with the dose distribution within the thyroid gland in breast cancer (BC) patients treated with loco-regional radiotherapy (RT). Methods and materials: ...