Department of Physics and Technology
Recent Submissions
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The Mechanism for Improved Polymer Gel Blocking During Low-Salinity Waterfloods, Investigated Using Positron Emission Tomography Imaging
(Journal article; Peer reviewed, 2020)Polymer gels can be placed in fractures within subsurface reservoirs to improve sweep efficiency during subsequent floods, and its success is largely determined by the gel’s ability to completely occupy the fracture volume. ... -
Hydrate Nucleation, Growth, and Induction
(Journal article; Peer reviewed, 2020)The first stage of any phase transition is a dynamic coupling of transport processes and thermodynamic changes. The free energy change of the phase transition must be negative and large enough to also overcome the penalty ... -
Explicit tracking of CO2-flow at the core scale using micro-Positron Emission Tomography (μPET)
(Journal article; Peer reviewed, 2020)Safe subsurface sequestration of carbon dioxide (CO2) is becoming increasingly important to meet climate goals and curb atmospheric CO2 concentrations. The world-wide CO2 storage capacity in carbonate formations is ... -
Implications of symmetries in the scalar sector
(Journal article; Peer reviewed, 2020)Symmetries play a very important rôle in Particle Physics. In extended scalar sectors, the existence of symmetries may permit the models to comply with the experimental constraints in a natural way, and at the same time ... -
A study of Λ and ¯Λ polarization splitting by meson field in PICR hydrodynamic model
(Journal article; Peer reviewed, 2021)With the PICR hydrodynamic model, we study the polarization splitting between Λ and Λ¯ at RHIC BES energy range, based on the meson field mechanism. Our results fit to the experimental data fairly well. Besides, two ... -
Electron Bernstein waves driven by electron crescents near the electron diffusion region
(Journal article; Peer reviewed, 2020)The Magnetospheric Multiscale (MMS) spacecraft encounter an electron diffusion region (EDR) of asymmetric magnetic reconnection at Earth’s magnetopause. The EDR is characterized by agyrotropic electron velocity distributions ... -
Universality of Lower Hybrid Waves at Earth's Magnetopause
(Journal article; Peer reviewed, 2019)Waves around the lower hybrid frequency are frequently observed at Earth's magnetopause and readily reach very large amplitudes. Determining the properties of lower hybrid waves is crucial because they are thought to ... -
Microdosimetry with a 3D silicon on insulator (SOI) detector in a low energy proton beamline
(Journal article; Peer reviewed, 2020)An accurate description of the radiation quality of proton beams is a precondition to increase our understanding of radiobiological mechanisms and to develop accurate biological response models for radiotherapy. However, ... -
Interaction of Cold Streaming Protons with the Reconnection Process
(Journal article; Peer reviewed, 2020)We employ a 2.5D particle-in-cell simulation to study a scenario where the reconnection process captures cold streaming protons. As soon as the tailward streaming protons become involved, they contribute to the overall ... -
Variation in relative biological effectiveness for cognitive structures in proton therapy of pediatric brain tumors
(Journal article; Peer reviewed, 2021)Background Clinically, a constant value of 1.1 is used for the relative biological effectiveness (RBE) of protons, whereas in vitro the RBE has been shown to vary depending on physical dose, tissue type, and linear energy ... -
Simulating vented hydrogen deflagrations: Improved modelling in the CFD tool FLACS-hydrogen
(Journal article; Peer reviewed, 2021)This paper describes validation of the computational fluid dynamics tool FLACS-Hydrogen. The validation study focuses on concentration and pressure data from vented deflagration experiments performed in 20-foot shipping ... -
Retrieval practice of a hierarchical principle structure in university introductory physics: Making stronger students
(Journal article; Peer reviewed, 2020)Introductory physics is taught to several hundred thousand university students every year. It is seen as especially difficult by many and the failure rate is often high. A relevant question is whether one can increase the ... -
On the accuracy of an interdigital electrostatic position sensor
(Journal article; Peer reviewed, 2020)In this work the induced voltage in an interdigital electrode when swept by a finite, triboelectrically charged dielectric surface is investigated. Finite element modelling fits well with the measured voltage as a function ... -
Comparison of methods for finding the capacitance of a supercapacitor
(Journal article; Peer reviewed, 2021)A carbon-based supercapacitor is usually associated with a capacitance such that the user can access its ability to store electrical charge. Three different measurement methods or variations thereof are typically employed ... -
Population-balance modeling of CO2 foam for CCUS using nanoparticles
(Journal article; Peer reviewed, 2020)Foam implementation for carbon capture, utilization and storage (CCUS) can greatly improve CO2 mobility control, resulting in enhanced hydrocarbon production and carbon storage capacity. The use of nanoparticles (NP) to ... -
The self-discharging of supercapacitors interpreted in terms of a distribution of rate constants
(Journal article; Peer reviewed, 2021)Supercapacitors are prone to self-discharging, which is most often measured as a voltage decrease with time under open circuit conditions. It is of substantial interest to find simple and general methods to extract information ... -
Kjennetegn på kritisk tenkning hos elever i et utforskende eksperiment i fysikk
(Master thesis, 2021-06-09)I Fagfornyelsen står det at «fysikk skal bidra til at elevene utvikler en vitenskapelig og kritisk tenkemåte, og til at de får muligheten til å reflektere over hvordan naturvitenskapelig kunnskap utvikles» (Utdanningsdirektoratet, ... -
Identifying the nature of the QCD transition in relativistic collision of heavy nuclei with deep learning
(Journal article; Peer reviewed, 2020)Using deep convolutional neural network (CNN), the nature of the QCD transition can be identified from the final-state pion spectra from hybrid model simulations of heavy-ion collisions that combines a viscous hydrodynamic ... -
AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
(Journal article; Peer reviewed, 2020)We propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and ...
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