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Quasiclassical boundary conditions for spin-orbit coupled interfaces with spin-charge conversion
(Peer reviewed; Journal article, 2022)The quasiclassical theory of superconductivity provides a methodology to study emergent phenomena in hybrid structures comprised of superconductors interfaced with other materials. A key component in this theory is the ... -
Quasiclassical Theory Beyond 1D: Supercurrents and Topological Excitations
(Master thesis, 2016)The finite element method is used to solve the quasiclassical Usadel equation, valid for diffusive superconducting hybrid systems, in higher dimensions than one. A detailed derivation of the method is given, and it is ... -
Quasiclassical theory for antiferromagnetic metals
(Peer reviewed; Journal article, 2023)Unlike ferromagnetism, antiferromagnetism cannot readily be included in the quasiclassical Keldysh theory because of the rapid spatial variation in the directions of of the magnetic moments. The quasiclassical framework ... -
Quasiclassical Theory for Dirac Material/Superconductor Proximity Structures
(Master thesis, 2016)In the decade since the experimental discovery of graphene and the topological insulators, the field of Dirac materials, a new class of materials with linear low-energy dispersions, has attracted great research interest. ... -
Quasiclassical theory for interfaces with spin-orbit coupling
(Journal article; Peer reviewed, 2019)In recent years, substantial progress has been made regarding the application of quasiclassical theory on superconducting hybrid structures. This theoretical framework is reliant on a proper set of boundary conditions in ... -
Quasiclassical theory for the superconducting proximity effect in Dirac materials
(Journal article, 2017)We derive the quasiclassical non-equilibrium Eilenberger and Usadel equations to first order in quantities small compared to the Fermi energy, valid for Dirac edge and surface electrons with spin-momentum locking p· σ¯, ... -
Radiation dose and image quality in CT - Comparison and evaluation of two different organ-based tube current modulation techniques and their impact on organ dose and image noise
(Master thesis, 2019)Bakgrunn: Computertomografi (CT) -undersøkingar er eit mykje brukt vertøy i medisinsk dignostikk, og bruken aukar. Denne auka har først til auka uro over stråledosen pasientar blir utsett for. Det er viktig å optimalisere ... -
Radiation dose and image quality in CT - Evaluation of how slice thickness, tube current modulation and reconstruction algorithms affect radiation dose and image noise
(Master thesis, 2018)Background: Helse Vest has currently standardized the computed tomography (CT) Thorax/Abdomen/Pelvis protocols in the region. One of the standardized parameters was a reduction of the reconstructed slice thickness from 5 ... -
Radiation fields and viscous cosmology - Friction in General Relativity
(Master thesis, 2015)Certain aspects of the Lorentz transformation, sometimes called beaming, aberration or transverse Doppler effect, induce viscosity-like effects on extended objects moving through radiation fields. In this thesis, these ... -
Radiative corrections to van der Waals interaction in fluids
(Master thesis, 2012)The van der Waals interaction energy is derived for a homogenous fluid of polarizable particles. Low-temperature corrections to the van der Waals interaction energy are computed numerically for three cases: Dilute media ... -
Radiotherapeutic Limits of Acceptance for Errors in Synthetic CT Synthesised from MRI
(Master thesis, 2020)CT-skanninger, som resulterer i elektrontetthetskart eller massetetthetskart, er standard inndata for strålebehandlingplanleggingssystemer. Imidlertid gir MR overlegen bløtvevskontrast. I tilfeller der MR er nødvendig for ... -
Raman and Infrared spectroscopies and X-ray diffraction data on bupivacaine and ropivacaine complexed with 2-hydroxypropyl-beta-cyclodextrin
(Journal article; Peer reviewed, 2017)The data presented in this article are related to the research article entitled “Probing the dynamics of complexed local anesthetics via neutron scattering spectroscopy and DFT calculations (http://dx.doi.org/10.1016/j.i ... -
Raman Soliton Fiber Lasers Tunable Between 1.98 – 2.22 um
(Chapter, 2016)We report two compact diode-pumped mode-locked femtosecond thulium-doped silica-fiber-based MOPAs, operating in the Raman soliton regime with the tunability between 1.98-2.22 μm, including a 75-nJ, 21-MHz fiber laser and ... -
Random angle grain boundary formation and evolution dynamics during Si directional solidification
(Journal article; Peer reviewed, 2019)The growth of multicrystalline silicon and the formation of a random angle grain boundary, as well as the dislocation generation and expansion is observed dynamically in situ, by Synchrotron X-ray imaging techniques. The ... -
Rapid carrier lifetime degradation and regeneration in high-performance multicrystalline silicon wafers
(Master thesis, 2020)Målet med denne masteroppgaven er å øke forståelsen av degradering i p-type høyytelse multikrystallinsk silisium (HPMC-Si) ved bruk av karakteriseringsteknikkene kvasi-likevektstilstand fotokonduktans (QSSPC) og ... -
Rapid Directional Recrystallisation of SiGe Fibres
(Master thesis, 2015)Fibre av \ce{SiGe} fremstilt ved flytende kjerne-trekking har blitt rekrystallisert ved bruk av to forskjellige teknikker: Sakte kj{\o}ling i en tubeovn og bevegende smeltesone-rekrystallisering med en \ce{CO2}-laser. To ... -
Rapid Steady State Convergence for Quantum Systems Using Time-Delayed Feedback Control
(Journal article; Peer reviewed, 2014) -
Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium
(Journal article; Peer reviewed, 2016)By the use of the Rayleigh method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders when the periodically corrugated surface of an isotropic elastic medium ... -
Rayleigh and Wood anomalies in the diffraction of light from a perfectly conducting reflection grating
(Journal article; Peer reviewed, 2016)By means of a modal method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders of a perfectly conducting lamellar reflection grating illuminated by p-polarized ... -
Reacceleration of charged dark matter
(Peer reviewed; Journal article, 2020)Charged particles scattering on moving inhomogenities of the magnetised interstellar medium can gain energy through the process of second-order Fermi acceleration. This energy gain depletes in turn the magnetic wave spectrum ...