Blar i Department of Physics and Technology på tittel

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    • Challenging aspects of critical thinking : A mixed-methods study of students’ test results, students’ reasoning, and teaching strategies 

      Paulsen, Vegard Havre (Doctoral thesis, 2022-04-21)
      There is a growing focus on critical thinking throughout the education system. Overall, the efforts that have been made to improve students’ critical thinking have not yielded the desired results. This could indicate a ...

    • Characterising Mesoscale Fast Flow Channels in the Polar Cap Ionosphere 

      Herlingshaw, Katie (Doctoral thesis, 2021-01-22)
      The large-scale ionospheric convection that circulates in the high-latitude polar caps was initially assumed to be a smooth, laminar flow. However, it has now come to light that this is an oversimplified understanding of ...

    • Characteristics and Meteorological Environment of Terrestrial Gamma-ray Flashes 

      Maiorana, Carolina (Doctoral thesis, 2021-05-28)
      This thesis investigates the geographic and meteorological conditions in which Terrestrial Gamma-ray Flashes (TGFs) are produced. TGFs are submillisecond bursts of gamma radiation produced inside thunderclouds in association ...

    • Characteristics of fragmented aurora-like emissions (FAEs) observed on Svalbard 

      Dreyer, Joshua; Partamies, Noora; Whiter, Daniel; Ellingsen, Pål Gunnar; Baddeley, Lisa; Buchert, Stephan C. (Journal article; Peer reviewed, 2021)
      This study analyses the observations of a new type of small-scale aurora-like feature, which is further referred to as fragmented aurora-like emission(s) (FAEs). An all-sky camera captured these FAEs on three separate ...

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

    • Characteristics of the Flank Magnetopause: MMS Results 

      Haaland, Stein; Paschmann, Götz; Oieroset, M; Phan, Tai D.; Hasegawa, Hiroshi; Fuselier, Stephen; COnstantinescu, Vlad; Eriksson, Stefan; Trattner, Karlheinz J.; Fadanelli, Sid; Tenfjord, Paul; Lavraud, Benoit; Norgren, Astrid Elisabet Cecilia; Eastwood, Jonathan P.; Hietala, Heli; Burch, J (Journal article; Peer reviewed, 2020)
      We have used a large number of magnetopause crossings by the Magnetospheric Multiscale (MMS) mission to investigate macroscopic properties of this current sheet, with emphasis on the flanks of the magnetopause. Macroscopic ...

    • Characteristics of the Flank Magnetopause: THEMIS Observations 

      Haaland, Stein; Runov, Andrei; Artemyev, Anton; Angelopoulos, Vassillis (Peer reviewed; Journal article, 2019-05-30)
      The terrestrial magnetopause is the boundary that shields the Earth's magnetosphere on one side from the shocked solar wind and its embedded interplanetary magnetic field on the other side. In this paper, we show observations ...

    • Characterization and application of 3D silicon microdosimeters 

      Samnøy, Andreas Tefre (Doctoral thesis, 2020-12-11)
      The effect of ionizing radiation on biological matter differs significantly between the various types of radiation. For the same amount of absorbed energy, some forms of radiation are much more effective in inducing ...

    • Characterization and correction of errors in measured inherent optical properties: Multiple scattering errors in LISST-VSF measurements 

      Ugulen, Håvard Stavn (Doctoral thesis, 2023-11-28)
      Viktigheten av nøyaktige målinger av interaksjoner mellom lys og partikler i marine miljøer har økt de siste årene grunnet den økende interessen for miljøovervåkning, satellittmålinger, og trådløs optisk undervannskommunikasjon. ...

    • Characterization of a neutral helium beam for helium microscopy 

      Andersen, Truls (Master thesis, 2015-06-29)
      Neutral helium beam microscopy is a new development in scientific instrumentation where neutral helium atoms are utilized to image a sample. The main advantage of using neutral helium is the significantly smaller energy ...

    • Characterization of Associating Polymer (AP) Solutions. Influences on flow behavior by the degree of hydrophobicity and salinity 

      Perttamo, Elise Kvåle (Master thesis, 2013-06-02)
      The most applied polymer today for chemical improved oil recovery (IOR) processes, such as polymer flood and/or polymer well treatments, is the synthetic partially hydrolyzed polyacrylamide (HPAM) and its derivatives. ...

    • Characterization of boron-coated silicon sensors for thermal neutron detection 

      Mehendale, Shruti Vineet; Kanaki, Kalliopi; Povoli, Marco; Samnøy, Andreas Tefre; Tambave, Ganesh Jagannath; Kok, Angela; Höglund, Carina; Schmidt, Susann; Kazi, Saima Sultana; Llamas-Jansa, Isabel; Kittelmann, Thomas; Lai, Chung-Chuan; Hansen, Thor-Erik; Pospisil, S.; Slavíček, Tomáš; Røhrich, Dieter; Hall-Wilton, Richard (Journal article; Peer reviewed, 2020)
      Silicon neutron detectors can operate at low voltage and come with ease of fabrication and the possibility of integration of readout electronics and thus are attractive from an application point of view. In this paper, we ...

    • Characterization of Hyper Spectral Irradiance and Radiance Sensors 

      Tveiterås, Jørund Haldorson (Master thesis, 2013-09-11)
      It is surprisingly problematic to to accurately measure light in the laboratory. Even more so when measuring in the field. There are lots of areas where measuring light spectrum and irradiance outside a laboratory is of ...

    • Characterization of monolithic CMOS pixel sensor chip with ion beams for application in particle computed tomography 

      Tambave, Ganesh Jagannath; Alme, Johan; Barnaföldi, Gergely Gábor; Barthel, Rene; van den Brink, Anthony; Brons, Stephan; Chaar, Mamdouh; Eikeland, Viljar Nilsen; Genov, Georgi; Grøttvik, Ola Slettevoll; Pettersen, Helge Egil Seime; Pastuović̀, Željko; Huiberts, Simon; Helstrup, Håvard; Hetland, Kristin Fanebust; Mehendale, Shruti Vineet; Meric, Ilker; Malik, Qasim Waheed; Odland, Odd Harald; Papp, Gábor; Peitzmann, Thomas; Piersimoni, Pierluigi; Rehman, Attiq Ur; Reidt, Felix; Richter, Matthias; Røhrich, Dieter; Sudár, András; Samnøy, Andreas Tefre; Seco, Joao Carlos; Shafiee, Hesam; Skjæveland, Eivind Vågslid; Sølie, Jarle Rambo; Ullaland, Kjetil; Varga-Kofarago, Monika; Volz, Lennart; Wagner, Boris; Yang, Shiming (Peer reviewed; Journal article, 2019)
      Particle computed tomography (pCT) is an emerging imaging modality that promises to reduce rangeuncertainty in particle therapy. The Bergen pCT collaboration aims to develop a novel pCT prototype basedon the ALPIDE monolithic ...

    • Characterization of the ALPIDE chip with Helium-4 ions for Proton Computed Tomography 

      Huiberts, Simon Kristian (Master thesis, 2018-12-06)
      Particle therapy has become an appealing therapeutic option for patients with various tumor types. The physical properties of charged particles allow for an improved dose distribution conformality compared to conventional ...

    • Characterization of the ALPIDE Detector with Proton Beams for the Development of a Prototype Computed Tomography Machine at the University of Bergen 

      Eikeland, Viljar Nilsen (Master thesis, 2018-07-04)
      In conventional radio therapy, photons is used in the treatment. Treatment with protons, however, greatly reduce the energy which is deposited in healthy tissue surrounding the tumor. The aim for the pCT group at the ...

    • Characterization of Thunderstorm Cells Producing Observable Terrestrial Gamma-Ray Flashes 

      Husbjerg, Lasse Skaaning; Neubert, Torsten; Chanrion, Olivier; Marisaldi, Martino; Stendel, Martin; Kaas, Eigil; Østgaard, Nikolai; Reglero, Victor (Journal article; Peer reviewed, 2023)
      The meteorological conditions required for the production of Terrestrial Gamma-ray Flashes (TGFs) are not well understood. Particularly, the link between TGF production, meteorology, and weather severity is poorly characterized ...

    • Characterization studies of a GEM detector prototype for the ALICE TPC upgrade for LHC Run 3 and beyond 

      Sande, Olav Tegle (Master thesis, 2016-11-21)
      The multiwire proportional chamber signal readout of the ALICE Time Projection Chamber (TPC) will be replaced by Gas Electron Multiplier (GEM) detectors to meet the new requirements due to higher collision rate and energies ...

    • Characterizing the initial conditions of heavy-ion collisions at the LHC with mean transverse momentum and anisotropic flow correlations 

      Acharya, Shreyasi; Adamová, Dagmar; Adler, Alexander; Adolfsson, Jonatan; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Shafiq F.; Ahn, Sang Un; Alme, Johan; Djuvsland, Øystein; Eikeland, Viljar Nilsen; Ersdal, Magnus Rentsch; Lofnes, Ingrid Mckibben; Nystrand, Joakim Ingemar; Rehman, Attiq Ur; Röhrich, Dieter; Sætre, Jon-Are; Tambave, Ganesh Jagannath; Velure, Arild; Wagner, Boris; Yang, Shiming; Yuan, Shiming; Arsene, Ionut Cristian; Malik, Qasim Waheed; Neagu, Alexandra; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Storehaug, Ida Torkjellsdatter; Tveter, Trine Spedstad; Wikne, Jon Christopher; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Nesbø, Simon Voigt; Reme-Ness, Haakon André; Storetvedt, Maksim Melnik; Langøy, Rune; Lien, Jørgen André; Ahuja, Ishaan; Akbar, Zaenai; Akindinov, Alexander; Al-Turany, Mohammed; Alam, Sk Noor; Aleksandrov, Dimitry; Alessandro, Bruno; Alfanda, Haidar Mas'ud; Alfaro Molina, José Rubén; ALICE, Collaboration (Journal article; Peer reviewed, 2022)
      Correlations between mean transverse momentum [pT] and anisotropic flow coefficients v2 or v3 are measured as a function of centrality in Pb–Pb and Xe–Xe collisions at sNN=5.02 TeV and 5.44 TeV, respectively, with ALICE. ...

    • Charge correlations using the balance function 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; Larsen, Dag Toppe; Lien, Jørgen; Liu, Lijiao; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røed, Ketil; Røhrich, Dieter; Skjerdal, Kyrre; Ullaland, Kjetil; Wagner, Boris; Yang, Shiming; 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; Aguilar Salazar, Saul; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad Masoodi, Arshar; Ahn, Sang Un; Akindinov, Alexander; Aleksandrov, Dimitry; ALICE, Collaboration (Peer reviewed; Journal article, 2013-06)
      In high–energy heavy–ion collisions, the correlations between the emitted particles can be used as a probe to gain insight into the charge creation mechanisms. In this article, we report the first results of such studies ...