Now showing items 359-378 of 535

• #### Particle Production in p+p and d+Au Collisions at √sNN = 200 GeV ﻿

(The University of Bergen, 2007-12-14)
Doctoral thesis
• #### Particle–wave discrimination in Poisson spot experiments ﻿

(IOP Publishing Ltd, 2011)
Matter–wave interferometry has been used extensively over the last few years to demonstrate the quantum-mechanical wave nature of increasingly larger and more massive particles. We have recently suggested the use of ...
Peer reviewedJournal article
• #### PEPT: an invaluable tool for 3-D particle tracking and CFD simulation verification in hydrocyclone studies ﻿

(EDP Sciences, 2013)
Particle tracks in a hydrocyclone generated both experimentally by positron emission particle tracking (PEPT) and numerically with Eulerian-Lagranian CFD have been studied and compared. A hydrocyclone with a cylinder-on-cone ...
Journal article
• #### Performance Evaluation of a Small-Animal PET/CT System ﻿

(The University of Bergen, 2014-06-02)
This master project is the first vendor-independent performance evaluation of the new nanoScan PET/CT system at the University of Bergen. A comprehensive performance evaluation of a novel scanner is very important, ...
Master thesis
• #### Performance of the ATLAS muon trigger in pp collisions at $\sqrt{s}=$8 TeV ﻿

(Springer, 2015-03-13)
The performance of the ATLAS muon trigger system has been evaluated with proton--proton collision data collected in 2012 at the Large Hadron Collider at a centre-of-mass energy of 8 TeV. The performance was primarily ...
Journal article
• #### Performance of the High Level Trigger gamma-conversion reconstruction chain in the ALICE central tracking detectors ﻿

(The University of Bergen, 2011-06-01)
Photons are produced through various processes in the particle and nuclei collisions at the LHC, and pose as useful probes of the formation of a Qaurk-Gluon Plasma. The probability of a photon converting within the central ...
Master thesis
• #### Periodic shock-emission from acoustically driven cavitation clouds: a source of the subharmonic signal ﻿

(Elsevier, 2014-12)
Single clouds of cavitation bubbles, driven by 254 kHz focused ultrasound at pressure amplitudes in the range of 0.48–1.22 MPa, have been observed via high-speed shadowgraphic imaging at 1 × 10⁶ frames per second. Clouds ...
Journal article
• #### Permittivity measurements using dual open ended coaxial probes ﻿

(The University of Bergen, 2012-11-19)
The motivation for this study has been to conduct a feasibility study on a measuring device to monitor hydrate formation close to the inner surface of a pipe where a multiphase hydrocarbon fluid mixture is flowing. This ...
Master thesis
• #### Perspektiv på partiklar - Ei samanlikning av Andrew Pickering og Peter Galisons framstilling av partikkelfysikk-historia, med spesiell vekt på oppdaginga av nøytral straum ﻿

(The University of Bergen, 2003)
Master thesis
• #### Petrophysical characterization in paleokarst and effect on reservoir properties ﻿

(The University of Bergen, 2012-06-29)
Karst is a geological process that can enhance porosity and permeability within a carbonate succession, thus affecting the heterogeneity producing a substantial effect on the fluid flow. The subject is not widely explored ...
Master thesis
• #### Phase Field Theory Modeling of CH4 and CO2 Fluxes from Exposed Natural Gas Hydrate Reserviors ﻿

(The University of Bergen, 2009-10-01)
Natural gas hydrates are widely distributed in sediments along continental margins, and harbor enormous amounts of energy. Gas hydrates are crystalline solids which occur when water molecules form a cage like structure ...
Master thesis
• #### Phase transitions in non-equilibrium dynamical systems ﻿

(The University of Bergen, 2010-12-09)
This work is a summary of three papers (references [5, 14, 24]), which deal with modelling the hadronization and freeze-out in heavy ion collisions. There is evidence that this is a non-equilibrium process, and therefore ...
Doctoral thesis
• #### Photon, neutrino and charged particle spectra from R-violating gravitino decays ﻿

(Elsevier, 2010-03-22)
We study photonic, neutrino and charged particle signatures from slow decays of gravitino dark matter in supersymmetric theories where R-parity is explicitly broken by trilinear operators. Photons and (anti-)fermions from ...
Journal article
• #### Photoproduction of ρ0 and Two–photon Production of Lepton Pairs in Ultra–peripheral Pb–Pb Collisions at the CERN LHC ﻿

(The University of Bergen, 2014-06-10)
This thesis is based on the analysis of ultra–peripheral collisions collected by the ALICE Collaboration at the CERN LHC. ALICE is a general purpose detector designed to study heavy-ion collisions at ultra–relativistic ...
Doctoral thesis
• #### The Physics of the B Factories ﻿

(Springer, 2014-11)
Journal article
• #### Poisson’s spot with molecules ﻿

(The American Physical Society, 2009)
In the Poisson-spot experiment, waves emanating from a source are blocked by a circular obstacle. Due to their positive on-axis interference an image of the source the Poisson spot is observed within the geometrical shadow ...
Peer reviewedJournal article
• #### Polarization-independent CP-violation in SUSY theories ﻿

(The University of Bergen, 2013-02-01)
Supersymmetry (SUSY) is a beautiful mathematical concept which binds internal symmetries of a quantum field theory with global symmetries of the space-time. Applications of this approach may stretch from unsolved puzzles ...
Doctoral thesis
• #### Pore-level foam generation and flow for mobility control in fractured systems ﻿

(Elsevier, 2015-03-05)
Pore-level foam generation, propagation, and sweep efficiency were visualized using silicon-wafer micromodels with an accurate representation of sandstone pore structure, grain shapes and sizes based on thin-section analysis. ...
Journal article
• #### Pore-to-Core Laboratory Upscaling and Visualization of Enhanced Oil Recovery and CO2 Storage ﻿

(The University of Bergen, 2015-01-09)
The global energy demand increases, and the need for hydrocarbon reserve growth is evident. The maturation of hydrocarbon formations worldwide combined with declining rate of major oil and gas discoveries, have caused a ...
Doctoral thesis
• #### Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum ﻿

(Elsevier, 2015-11)
We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are ...
Journal article