Browsing Institutionen för fysik / Department of Physics by Issue Date
Now showing items 1-20 of 37
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Single-photon double ionisation of Isocyanic acid
(2019-06-26)Isocyanic acid (HNCO), a molecule containing the four most abundant atoms of organic chemistry, has been studied by single-photon double ionisation. Both direct double ionisation, such as core-valence and valence-valence ... -
Characterizing CEPA, a phoswich array
(2019-08-01)The structure of unstable nuclei is studied at the international facility FAIR, Darmstadt, Germany. One experimental setup at FAIR is called R3B where radioactive beams at relativistic energies impinge on a specific target ... -
Excitation and Detection of Spinwaves with Light
(2020-07-03)Spinwaves (SWs) are a collective excitation of the local spin moments in a magnetic ordered medium. Spinwaves can be excited electrically using microwave sources, direct currents, and by focused optical short pulses on ... -
Enfoton-dubbeljonisation av isothiocyansyra
(2020-07-03)Isotiocyansyra, HNCS, en interstellärt intressant molekyl har studerats genom att använda flygtidsspektroskopi med en magnetisk flaska, där molekylen joniseras med enstaka fotoner med energier upp till 195 eV. En redogörelse ... -
Detector reconstruction of gamma-rays
(2020-07-03)The study of nuclear reactions through measuring emitted gamma-rays becomes convoluted due to complex interactions with the detector crystals, leading to cross-talk between neighbouring elements. To distinguish gamma-rays ... -
Ai av Neurala Nätverk för Analys av innebandyspelare
(2020-07-03)Inom detta kandidatarbetet har ett positioneringssystem utvecklats för att bestämma innebandyspelares hastighet samt position i realtid. Med hjälp av AI och kamera har vi uppmätt en persons hastighet som springer på en ... -
Dubbeljonisation av allen med hjälp av högenergetiska fotoner
(2020-07-03)Detta arbete presenterar en studie om dubbeljonisation av molekylen allen vid absorption av högenergetiska fotoner. Vi undersöker i denna rapport valensdubbeljonisation och Augerprocesser hos allen. Syftet är att jämföra ... -
How stable are molecular dianions?
(2020-07-03)Since the discovery of fullerenes, the C60 molecule has attracted considerable attention because of its high level of symmetry and its ability to act as a platform for studying interacting electrons. It can be created ... -
Studies on the spatial resolution in magnetoencephalography
(2020-08-05)Functional neuroimaging is used in research and clinical settings to understand how the brain works when it is healthy and how to treat it when it is not. Magnetoencephalography (MEG) is a functional neuroimaging method ... -
Laser Photodetachment Threshold Spectroscopy on O−, Ag−, PdO− and AgO−
(2020-08-20)The aim of this thesis is to investigate the possibility of using anionic oxides in selective laser photodetachment suppression of 107Ag in Accelerator Mass Spectrometry (AMS) studies of 107Pd. The thesis will also give ... -
Opto-vibrational coupling in molecular solar thermal storage materials: Electronic structure calculations and neural-networkbased analysis Giannis Kostaras Degree project
(2021-01-26)Molecular solar thermal storage materials are proposed as a clean, renewable energy solution for a world with ever increasing energy needs. Norbornadiene is an organic compound suitable for molecular solar thermal storage ... -
Topological Band Theory, An Overview
(2021-06-14)Topological insulators, superconductors and semi-metals are states of ma er with unique features such as quantized macroscopic observables and robust, gapless edge states. ese states can not be explained by standard ... -
Quantum Error Correction Using Graph Neural Networks
(2021-06-17)A graph neural network (GNN) is constructed and trained with a purpose of using it as a quantum error correction decoder for depolarized noise on the surface code. Since associating syndromes on the surface code with ... -
Dynamics of Optically Levitated Microdumbbells
(2021-11-19)As light carries momentum, enough force can be applied to small particles from a vertical pointing laser to counteract the gravitational force it feels, thus levitating it in thin air. Oblong nanoparticles under these ... -
Simulating The Deceleration of Negative Ions in a Quadrupole Beam Guide Using Helium Gas
(2021-11-19)Attohallen is a new facility, to be set up by the Department of Physics at the University of Gothenburg, that will be used for exploring the temporal evolution of entangled electrons emitted from atoms and molecules using ... -
Från Liealgebror till rumtidssymmetrier
(2021-11-19)Kontinuerliga symmetrier är grundläggande inom teoretisk fysik, och beskrivs på ett naturligt sätt via Liegrupper bestående av symmetritransformationer av det underliggande fysikaliska systemet. Varje sådan grupp svarar ... -
Enkel- och dubbeljonisation av metylisotiocyanat
(2021-11-19)Metylisotiocyanat (CH3NCS), även kallad MITC, är en biprodukt från jordbruksindustrin. I detta arbete studeras elektronstrukturen och fragmentationsprocessen i CH3NCS vid enkel- och dubbeljonisation med hjälp av en magnetisk ... -
Patterns in Interacting Quantum Gases
(2021-11-19)Quantum gases is a novel field of experimental research, where it is possible to study the universal behaviour of quantum particles under controlled circumstances. In two experiments by Zürn et al. and Holten et al., ... -
Styrsystem för en övertonsstrålningskälla optimerad för attosekundsspektroskopi
(2021-11-19)Ett styrsystem utvecklades för den planerade HHG-uppställning som för närvarande byggs vid Göteborgs universitet, Attohallen. Systemet utvecklades i National Instruments grafiska programmeringsspråk LabVIEW. Styrsystemet ... -
Development of a DEM-FEM framework for infrastructure simulations
(2022-09-20)This thesis presents a coupling algorithm of the discrete element method (DEM) and finite element method (FEM). The algorithm formulates an explicit coupling of transient simulations of particle systems interacting with ...