Blar i Department of Physics and Technology på tittel

Viser treff 344-363 av 2102

    • Directed flow of charged particles at mid-rapidity relative to the spectator plane in Pb-Pb collisions at \(\sqrt{s_{NN}}\)=2.76 TeV 

      Alme, Johan; Erdal, Hege Austrheim; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Fehlker, Dominik; Haaland, Øystein Senneset; Huang, Meidana; Langøy, Rune; Lien, Jørgen; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; Bätzing, Paul Christoph; Dordic, Olja; Eyyubova, Gyulnara; Kværnø, Henning; Lindal, Svein; Løvhøiden, Gunnar; Milosevic, Jovan; Nilsson, Mads Stormo; Qvigstad, Henrik; Richter, Matthias; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Abelev, Betty; Adam, Jaroslav; Adamová, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agocs, Andreas Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Ajaz, Muhammad; Akindinov, Alexander; Aleksandrov, Dimitry; Alessandro, Bruno; ALICE, Collaboration (Peer reviewed; Journal article, 2013-12)
      The directed flow of charged particles at midrapidity is measured in Pb-Pb collisions at \(\sqrt{s_{NN}}\).2.76 TeV relative to the collision plane defined by the spectator nucleons. Both, the rapidity odd \(v_1^{odd}\) ...

    • Directed Network of Substorms Using SuperMAG Ground‐Based Magnetometer Data 

      Orr, L; Chapman, Sandra c.; Gjerløv, Jesper (Peer reviewed; Journal article, 2019)
      We quantify the spatiotemporal evolution of the substorm ionospheric current system utilizing the SuperMAG 100+ magnetometers. We construct dynamical directed networks from this data for the first time. If the canonical ...

    • Directional wave measurements from navigational buoys 

      Sætre, Camilla; Tholo, Harald; Hovdenes, Jostein; Kocbach, Jan; Hageberg, Anne Ansnes; Klepsvik, Inge; Aarnes, Ole Johan; Furevik, Birgitte Rugaard; Magnusson, Anne Karin (Journal article; Peer reviewed, 2022)
      In-situ wave measurements are often required by marine industry standards and for verification of coastal wave forecasts. Obtaining wave measurements is costly and it would be advantageous to utilize existing platforms ...

    • Dispersion and two-phase flow in material from different carbonate pore classes 

      Heide, Marius (Master thesis, 2008-06-02)
      Carbonate reservoirs are currently estimated to contain more than 50 % of the world's oil reserves. The economical value of improving knowledge on fluid flow in these reservoirs is therefore vast. Carbonate reservoirs are ...

    • Distribution and Occurrence Frequency of dB/dt Spikes During Magnetic Storms 1980–2020 

      Schillings, A.; Palin, L.; Opgenoorth, H.J.; Hamrin, M.; Rosenqvist, L.; Gjerløv, Jesper; Juusola, Liisa; Barnes, R. (Journal article; Peer reviewed, 2022)
      The physical magnetospheric cause for geomagnetically induced currents (GICs) are rapid time-varying magnetic fields (dB/dt), which occur mainly during magnetic substorms and storms. When, where and why exactly such rapid ...

    • Distribution of energetic oxygen and hydrogen in the near-Earth plasma sheet 

      Kronberg, Elena A.; Grigorenko, Elena; Haaland, Stein; Daly, Patrick W.; Delcourt, Dominique C.; Luo, Hao; Kistler, Lynn M.; Dandouras, Iannis (Peer reviewed; Journal article, 2015-05)
      The spatial distributions of different ion species are useful indicators for plasma sheet dynamics. In this statistical study based on 7 years of Cluster observations, we establish the spatial distributions of oxygen ions ...

    • Do the Throat Auroras Create Polar Cap Patches? 

      Zhang, Duan; Zhang, Qing-He; Oksavik, Kjellmar; Xu, Tong; Xing, Zan-Yang; Lyons, L.R.; Han, De-Sheng; Zhang, Hong-Bo; Ma, Yu-Zhang; Hu, Ze-Jun; Liu, Jian-Jun; Wang, Yong; Wang, Xiang-Yu (Journal article; Peer reviewed, 2023)
      Throat auroras and polar cap patches are common phenomena in the polar ionosphere resulting from magnetosphere-ionosphere coupling. A campaign was organized, with all-sky imagers at Yellow River Station, the European ...

    • Dos and Don’ts When Developing a System to Investigate Spontaneous Imbibition in Unconsolicdated Porous Media 

      Brattekås, Bergit; Føyen, Tore Lyngås; Vabø, Trond; Haugland, Håkon; Reite, Simon I.; Saunes, Anders S.; Fernø, Martin (Peer reviewed; Journal article, 2019)
      This paper describes the development of a consistent model system to measure spontaneous imbibition and determine saturation functions in unconsolidated porous media. Sand grains or glass beads were packed in up to 0.5 m ...

    • 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. (Peer reviewed; Journal article, 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: ...

    • Dual-Lobe Reconnection and Horse-Collar Auroras 

      Milan, Stephen Eric; Carter, Jennifer Alyson; Bower, G.E.; Imber, S.M.; Paxton, Larry J.; Anderson, Brian J.; Hairston, Marc; Hubert, Benoit (Journal article; Peer reviewed, 2020)
      We propose a mechanism for the formation of the horse-collar auroral configuration during periods of strongly northward interplanetary magnetic field (IMF), invoking the action of dual-lobe reconnection (DLR). Auroral ...

    • Dynamic effects of restoring footpoint symmetry on closed magnetic field lines 

      Reistad, Jone Peter; Østgaard, Nikolai; Tenfjord, Paul; Laundal, Karl Magnus; Snekvik, Kristian; Haaland, Stein; Milan, Steve; Oksavik, Kjellmar; Frey, H. U.; Grokott, A. (Peer reviewed; Journal article, 2016-05-05)
      Here we present an event where simultaneous global imaging of the aurora from both hemispheres reveals a large longitudinal shift of the nightside aurora of about 3 h, being the largest relative shift reported on from ...

    • Dynamic properties of throat aurora revealed by simultaneous ground and satellite observations 

      Chen, Xiangcai; Han, Desheng; Lorentzen, Dag Arne; Oksavik, Kjellmar; Moen, Jøran Idar; Baddeley, Lisa (Peer reviewed; Journal article, 2017-03)
      Throat aurora is defined as south-north aligned auroral arcs equatorward of the dayside cusp aurora and was suggested to be the results of cold magnetospheric plasma interaction with magnetopause reconnection, but its ...

    • Dynamic Susceptibility Contrast MRI May Contribute in Prediction of Stereotactic Radiosurgery Outcome in Brain Metastases 

      Starck, Lea; Skeie, Bente Sandvei; Moen, Gunnar; Grüner, Renate (Journal article; Peer reviewed, 2022)
      Background Following stereotactic radiosurgery (SRS), predicting treatment response is not possible at an early stage using structural imaging alone. Hence, the current study aims at investigating whether dynamic ...

    • Dynamical Grooming meets LHC data 

      Caucal, Paul; Soto-Ontoso, Alba; Takacs, Adam (Journal article; Peer reviewed, 2021)
      In this work, we analyse the all-orders resummation structure of the momentum sharing fraction, zg, opening angle, θg, and relative transverse momentum, kt,g, of the splitting tagged by the Dynamical Grooming procedure in ...

    • Dynamical grooming of QCD jets 

      Mehtar-Tani, Yacine; Soto-Ontoso, Alba; Tywoniuk, Konrad (Journal article; Peer reviewed, 2020-02-06)
      We propose a new class of infrared-collinear and Sudakov safe observables with an associated jet grooming technique that removes dynamically soft and large angle branches. It is based on identifying the hardest branch in ...

    • Dynamically groomed jet radius in heavy-ion collisions 

      Caucal, Paul; Soto-Ontoso, Alba; Takacs, Adam (Journal article; Peer reviewed, 2022)
      We explore the ability of a recently proposed jet substructure technique, dynamical grooming, to pin down the properties of the quark-gluon plasma formed in ultrarelativistic heavy-ion collisions. In particular, we compute, ...

    • Dynamics in the H2+ molecule, using a one dimensional model 

      Askeland, Sigurd (Master thesis, 2009-06-02)
      A 1D model of the hydrogen molecular ion in the Born-Oppenheimer (BO) approximation. The making and testing of the model is described, as well as some underlying theory. The model also calculates non-BO effects.

    • Dynamics of excited atoms and molecules interacting with external fields 

      Simonsen, Sigrid Ina (Doctoral thesis, 2013-08-30)
      This thesis is a theoretical study of the behavior of electrons in atoms and molecules subjected to external electromagnetic fields. Three electronic systems have been central in this work, the atomic and quasimolecular ...

    • Eco-friendly Egyptian blue (CaCuSi4O10) dye for luminescent solar concentrator applications 

      Rajaramanan, Tharmakularasa; Keykhaei, Mansoureh; Gourji, Fatemeh Heidari; Ravirajan, Punniamoorthy; Senthilnanthanan, Meena; Frette, Øyvind; Velauthapillai, Dhayalan (Journal article; Peer reviewed, 2023)
      This study focuses on synthesizing the heavy metal-free ancient Egyptian blue (EB; CaCuSi4O10) dye using a facile ceramic method for luminescent solar concentrator (LSC) application. XRD, SEM and EDX results confirmed that ...

    • Effect of an optimized X-ray blanket design on operator radiation dose in cardiac catheterization based on real-world angiography 

      Davidsen, Cedric; Bolstad, Kirsten Hansine Helene Nygaard; Ytre-Hauge, Kristian Smeland; Samnøy, Andreas Tefre; Vikenes, Kjell; Tuseth, Vegard (Journal article; Peer reviewed, 2022)
      Background There is increasing concern and focus in the interventional cardiology community on potential long term health issues related to radiation exposure and heavy wearable protection. Optimized shielding measures ...