Blar i Department of Physics and Technology på tittel
Viser treff 1920-1939 av 2132
-
Stages in the dynamics of hydrate formation and consequences for design of experiments for hydrate formation in sediments
(Journal article; Peer reviewed, 2019)Natural gas hydrates in sediments can never reach thermodynamic equilibrium. Every section of any hydrate-filled reservoir is unique and resides in a stationary balance that depends on many factors. Fluxes of hydrocarbons ... -
Statistical Analysis of Bifurcating Region 2 Field-Aligned Currents Using AMPERE
(Journal article; Peer reviewed, 2022)We present a statistical analysis of the occurrence of bifurcations of the Region 2 (R2) Field-Aligned Current (FAC) region, observed by the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE). ... -
A statistical study of polar cap flow channels and their IMF by dependence
(Journal article; Peer reviewed, 2020)An algorithm to detect high-speed ionospheric flow channels (FCs) in the polar cap was applied to data from the Longyearbyen radar of the Super Dual Auroral Radar Network. The Longyearbyen radar is at high latitude (78.2°N, ... -
A statistical study of polar cap flow channels observed in both hemispheres using SuperDARN radars
(Journal article; Peer reviewed, 2022)This paper details the first large-scale, interhemispheric statistical study into ionospheric fast flow (>900 m/s) channels in the polar cap using the SuperDARN radar network. An automatic algorithm was applied to 6 years ... -
Statistical Study of the Relationship Between Ion Upflow and Field-Aligned Current in the Topside Ionosphere for Both Hemispheres During Geomagnetic Disturbed and Quiet Time
(Journal article; Peer reviewed, 2020)A statistical study of ion upflow and field‐aligned currents (FACs) has been performed in the topside ionosphere of both hemispheres for magnetic quiet and disturbed times by using DMSP satellite observations from 2010–2013. ... -
Statistical Temporal Variations in the Auroral Electrojet Estimated With Ground Magnetometers in Fennoscandia
(Journal article; Peer reviewed, 2023)We present the implementation of an improved technique to coherently model the high-latitude ionospheric equivalent current. Using a fixed selection of 20 ground magnetometers in Fennoscandia, we present a method based on ... -
Statistical Tools for Imaging Atmospheric Cherenkov Telescopes
(Journal article; Peer reviewed, 2022)The development of Imaging Atmospheric Cherenkov Telescopes (IACTs) unveiled the sky in the teraelectronvolt regime, initiating the so-called “TeV revolution”, at the beginning of the new millennium. This revolution was ... -
Storing CO2 as solid hydrate in shallow aquifers: Electrical resistivity measurements in hydrate-bearing sandstone
(Journal article; Peer reviewed, 2020)A recent proposed carbon dioxide (CO2) storage scheme suggests solid CO2 hydrate formation at the base of the hydrate stability zone to facilitate safe, long-term storage of anthropogenic CO2. These high-density hydrate ... -
Strange particle production in proton–proton collisions at s=09 with ALICE at the LHC The ALICE Collaboration
(Peer reviewed; Journal article, 2011-03-30)The production of mesons containing strange quarks (, φ) and both singly and doubly strange baryons (, , and ) are measured at mid-rapidity in pp collisions at s = 0.9 TeV with the ALICE experiment at the LHC. The results ... -
A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment
(Peer reviewed; Journal article, 2019-02-06)This paper describes a strategy for a general search used by the ATLAS Collaboration to find potential indications of new physics. Events are classified according to their final state into many event classes. For each event ... -
Studier av algoritmer for tau-identifikasjon
(Master thesis, 2010-05-31)Mange signaturer for ny fysikk i ATLAS vil henfalle til eit eller fleire tau-lepton. Derfor har ATLAS utvikla verktøy for identifikasjon av tau-lepton som henfall eit eller fleire pion. Verktøya er kompliserte og inneheld ... -
Studies of \(Z\gamma\) production in association with a high-mass dijet system in \(pp\) collisions at \(\sqrt{s}=\) 8 TeV with the ATLAS detector
(Peer reviewed; Journal article, 2017-07)The production of a \(Z\) boson and a photon in association with a high-mass dijet system is studied using 20.2fb\(^{-1}\) of proton-proton collision data at a centre-of-mass energy of \(\sqrt{s}\) = 8 TeV recorded with ... -
Studies of J/ψ production at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV
(Journal article; Peer reviewed, 2020-02-06)The inclusive J/ψ production in Pb–Pb collisions at the center-of-mass energy per nucleon pair √sNN = 5.02 TeV, measured with the ALICE detector at the CERN LHC, is reported. The J/ψ meson is reconstructed via the dimuon ... -
Studies of the linear energy transfer and relative biological effectiveness in proton therapy of pediatric brain tumors
(Doctoral thesis, 2021-11-25)Proton therapy offers a reduction in dose to normal tissue compared to conventional photon-based radiotherapy. This is of particular benefit for pediatric patients as the majority are expected to become long-term survivors. ... -
Studies of the performance of the ATLAS detector using cosmic-ray muons
(Peer reviewed; Journal article, 2011-03-29)Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrate to the ... -
Studies of the Relative Biological Effectiveness and Biological Dose in Proton and Carbon Ion Therapy
(Doctoral thesis, 2020-04-28)Protons and heavier ions have an increased relative biological effectiveness (RBE) compared to photons. While variable RBE models are applied clinically in carbon ion therapy, the RBE in proton therapy is accounted for ... -
Studies on the solid-state transformation and chemical modification reactions of carbon black nanoparticles
(Doctoral thesis, 2015-06-26)Carbon black (CB) is nanoscale particles with quasi-spherical nature, produced from incomplete combustion of hydrocarbons. It is a well-known type of amorphous carbon which exists in the form of aggregated spheres. CBs are ... -
Study of B+c→J/ψD+s and B+c→J/ψD∗+s decays in pp collisions at √s = 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2022)A study of B+c→J/ψD+sBc+→J/ψDs+ and B+c→J/ψD∗+sBc+→J/ψDs∗+ decays using 139 fb−1 of integrated luminosity collected with the ATLAS detector from s√s = 13 TeV pp collisions at the LHC is presented. The ratios of the branching ... -
A study of capillary pressure and capillary continuity in fractured rocks
(Doctoral thesis, 2008-09-05)The production of oil is challenging in fractured reservoirs due to the large transmissibility contrast between matrix and fracture, and primary recovery is often low. The recovery efficiency depends on the relationship ... -
Study of Gas Mobility Control during CO2 Injection for Enhanced Oil Recovery
(Master thesis, 2016-06-01)Carbon Dioxide (CO2) has been used as a commercial source for Enhanced Oil Recovery (EOR) for over 40 years. In recent years, the utilization of anthropogenic CO2 has become more attractive, because of its proven EOR and ...