Now showing items 158-177 of 596

• #### Faglege samtalar mellom elevar under nokre elevøvingar i naturfag: Nokre prosesskjenneteikn ﻿

(The University of Bergen, 2016-06-01)
This study has dealt with conversations in the classroom connected to practical work in science. It has been looked at conversations where teacher is with and where teacher is not included. The aim of the task was to ...
Master thesis
• #### Femtosecond-pulse-train ionization of Rydberg wave packets ﻿

(American Physical Society, 2012-10-09)
We calculate, based on first-order perturbation theory, the total and differential ionization probabilities from a dynamic periodic Rydberg wave packet of a given n-shell exposed to a train of femtosecond laser pulses. ...
Peer reviewedJournal article
• #### Fiducial and differential cross sections of Higgs boson production measured in the four-lepton decay channel in $\boldsymbol{pp}$ collisions at $\boldsymbol{\sqrt{s}}$ = 8 TeV with the ATLAS detector ﻿

(Elsevier, 2014-11-10)
Measurements of fiducial and differential cross sections of Higgs boson production in the ${H \rightarrow ZZ ^{*}\rightarrow 4\ell}$ decay channel are presented. The cross sections are determined within a fiducial phase ...
Journal article
• #### Finite element modeling of ultrasound measurement systems for gas. Comparison with experiments in air. ﻿

(The University of Bergen, 2013-06-10)
A finite element based system model of an ultrasonic measurement system in air is developed. Simulations and experiments in air are compared.
Master thesis
• #### First performance results of the ALICE TPC Readout Control Unit 2 ﻿

(IOP, 2016-01)
This paper presents the first performance results of the ALICE TPC Readout Control Unit 2 (RCU2). With the upgraded hardware typology and the new readout scheme in FPGA design, the RCU2 is designed to achieve twice the ...
Journal article
• #### Flame extension for pool fires under ceiling at various heights ﻿

(The University of Bergen, 2015-06-08)
Spill and ignition of flammable fuel can occur. The following fire can be free burning or affected by nearby objects, such as overlying ceiling (or similar) that do not let flames through. When a flame impinges on a ceiling, ...
Master thesis
• #### Flame propagation in dust clouds. Numerical simulation and experimental investigation ﻿

(The University of Bergen, 2014-06-27)
This dissertation describes the development and validation of a methodology for estimating the consequences of accidental dust explosions in complex geometries. The approach adopted entails the use of results from ...
Doctoral thesis
• #### Flame Propagation in Dust Clouds: Challenges for Model Validation ﻿

(2010)
Modelling of industrial dust explosions poses a formidable challenge to researchers and safety engineers. Whereas current best practice with respect to modelling the consequences of vapour cloud explosions in the petroleum ...
Conference object
• #### Flavour structure of R-violating neutralino decays at the LHC ﻿

(Springer, 2011-07-15)
We study signatures of R-parity violation in the production of supersymmetric particles at the LHC, and the subsequent decay of the lightest neutralino being the end product of a supersymmetric cascade decay. In doing ...
Peer reviewedJournal article
• #### Flavour tagged time dependent angular analysis of the $B_s^{0} \rightarrow J/\psi \phi$ decay and extraction of $\Delta\Gamma_s$ and the weak phase $\phi_s$ in ATLAS ﻿

(American Physical Society, 2014-09)
A measurement of the $B_s ^{0}\rightarrow J/\psi \phi$ decay parameters, updated to include flavour tagging is reported using $4.9 fb^{-1}$ of integrated luminosity collected by the ATLAS detector from $\sqrt{s}= 7$TeV ...
Journal article
• #### Flow Components and Initial State CM Fluctuations ﻿

(Jagiellonian University, 2012)
At the LHC, the strong collective flow is observed in Pb+Pb collisions, as shown by the azimuthal correlations in the transverse-momentum distributions of the produced particles. We calculate flow components in a relativistic ...
Journal article
• #### Flow visualization of CO2 in tight shale formations at reservoir conditions ﻿

(Agu publications, 2015-09-18)
The flow of CO2 in porous media is fundamental to many engineering applications and geophysical processes. Yet detailed CO2 flow visualization remains challenging. We address this problem via positron emission tomography ...
Journal article
• #### Flow vorticity in peripheral high-energy heavy-ion collisions ﻿

(American Physical Society, 2013-03-22)
Vorticity development is studied in the reaction plane of peripheral relativistic heavy-ion reactions where the initial state has substantial angular momentum. The earlier predicted rotation effect and Kelvin Helmholtz ...
Journal article
• #### Fluid Flow in Fractured Carbonates: Wettability Effects and Enhanced Oil Recovery ﻿

(The University of Bergen, 2010-06-17)
Doctoral thesis
• #### Forward and midrapidity like-particle ratios from p+p collisions at root s=200 GeV ﻿

(Elsevier, 2005-02)
We present a measurement of π−/π+π−/π+, K−/K+K−/K+ and p¯/p from p+pp+p collisions at s=200 GeV over the rapidity range 0<y<3.40<y<3.4. For pT<2.0 GeV/cpT<2.0 GeV/c we see no significant transverse momentum dependence ...
Journal article
• #### Forward-backward multiplicity correlations in pp collisions at √s = 0.9, 2.76 and 7 TeV ﻿

(Springer, 2015-05-20)
The strength of forward-backward (FB) multiplicity correlations is measured by the ALICE detector in proton-proton (pp) collisions at s√ = 0.9, 2.76 and 7 TeV. The measurement is performed in the central pseudorapidity ...
Journal article
• #### Free-standing, axially-symmetric diffraction gratings for neutral matter-waves: experiments and fabrication ﻿

(The University of Bergen, 2011-10-04)
Since de Broglie’s famous postulation of the wave-nature of material particles and its subsequent experimental verification, it is known that atoms and molecules behave like waves on a small scale. The investigation of ...
Doctoral thesis
• #### Freeze-Out in the Multi-Module Model of Ultra-Relativistic Heavy Ion Collisions ﻿

(The University of Bergen, 2003)
Master thesis
• #### Freeze-out radii extracted from three-pion cumulants in pp, p-Pb and Pb-Pb collisions at the LHC ﻿

(Elsevier, 2014-12-12)
In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted ...
Journal article
• #### Fundamental aspects of water methane separation in zeolites ﻿

(The University of Bergen, 2013-06-03)
The main objective of this thesis was to use molecular dynamics to investigate the methane interactions with zeolite, specifically the Linde Type A-3A, alongside with an investigation into the use of polynomial path ...
Master thesis