Browsing Department of Physics and Technology by Title
Now showing items 633-652 of 2128
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The Higgs-like boson spin from the center–edge asymmetry in the diphoton channel at the LHC
(Peer reviewed; Journal article, 2015-05-07)We discuss the discrimination of the 125 GeV spin-parity 0+ Higgs-like boson observed at the LHC, decaying into two photons, H→γγ, against the hypothesis of a minimally coupled JP=2+ narrow diphoton resonance with the same ... -
High Back Pressure on Pressure Safety Valves (PSVs) in a Flare System. Developing the Simulation model, Identifying and analyzing the back-pressure build-up
(Master thesis, 2013-10-01)Process safety is a disciplined framework for managing the integrity of operating systems and processes handling hazardous substances. It is achieved by applying good design principles, engineering, and operating and ... -
High Harmonic Generation in Strongly Correlated Systems
(Master thesis, 2018-06-23)In recent years, the study of phenomena pertaining to non-linear properties of materials has seen a major upswing - especially in the context of High Harmonic Generation (HHG). In this thesis, an account of the current ... -
High voltage electrical discharges in the laboratory
(Master thesis, 2014-12-18)A new phenomenon called terrestrial gamma-ray flashes (TGFs) was discovered early in the 1990s by the NASA satellite Compton Gamma-Ray Observatory. The short-duration bursts of highly energetic gamma-rays are caused by ... -
A high-granularity digital tracking calorimeter optimized for proton CT
(Journal article; Peer reviewed, 2020)A typical proton CT (pCT) detector comprises a tracking system, used to measure the proton position before and after the imaged object, and an energy/range detector to measure the residual proton range after crossing the ... -
High-latitude cold ion outflow inferred from the Cluster wake observations in the magnetotail lobes and the polar cap region
(Journal article; Peer reviewed, 2021)Cold ions with low (a few eV) thermal energies and also often low bulk drift energies, dominate the ion population in the Earth’s magnetosphere. These ions mainly originate from the ionosphere. Here we concentrate on cold ... -
High-latitude magnetic fields and their time derivatives: interhemispheric similarities
(Peer reviewed; Journal article, 2013-02-19)There are two simple and objective measures of geomagnetic activity: the daily range of field components, and the daily maximum of the time derivative of the field. We study these using data from the geomagnetic latitude ... -
High-order harmonic generation from graphene: Strong attosecond pulses with arbitrary polarization
(Peer reviewed; Journal article, 2013-05-03)We explore high-order harmonic generation (HHG) from a graphene sheet exposed to intense femtosecond laser pulses based on the Lewenstein model. It is demonstrated that the HHG cutoff frequency increases with graphene size ... -
High-precision limits on W–W′and Z–Z′ mixing from diboson production using the full LHC Run 2 ATLAS data set
(Journal article; Peer reviewed, 2020)The full ATLAS Run 2 data set with time-integrated luminosity of 139fb−1 in the diboson channels in hadronic final states is used to probe a simple model with an extended gauge sector (EGM), proposed by Altarelli et al., ... -
Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 2.76 TeV
(Peer reviewed; Journal article, 2016-09)The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for \(\pi^{\pm}\). \(\mathrm{K}^{\pm}\) and p+\).overline{\mathrm{p}}\) in Pb-Pb collisions at \(\sqrt{s_\mathrm{{NN}}} = 2.76\) TeV were ... -
Higher harmonic non-linear flow modes of charged hadrons in Pb-Pb collisions at √sNN = 5.02 TeV
(Journal article; Peer reviewed, 2020)Anisotropic flow coefficients, vn, non-linear flow mode coefficients, χn,mk, and correlations among different symmetry planes, ρn,mk are measured in Pb-Pb collisions at sNN−−−√ = 5.02 TeV. Results obtained with multi-particle ... -
Higher moment fluctuations of identified particle distributions from ALICE
(Peer reviewed; Journal article, 2019)Cumulants of conserved charges fluctuations are regarded as a potential tool to study the criticality in the QCD phase diagram and to determine the freeze-out parameters in a model-independent way. At LHC energies, the ... -
Higher-order corrections to heavy-quark jet quenching
(Peer reviewed; Journal article, 2019-07-03)We calculate higher-order corrections to the quenching factor of heavy-quark jets due to hard, in-medium splittings in the framework of the BDMPS-Z formalism. These corrections turn out to be sensitive to a single mass ... -
Highlights of experimental results from ALICE
(Peer reviewed; Journal article, 2017-11)Highlights of recent results from the ALICE collaboration are presented. The collision systems investigated are Pb–Pb, p–Pb, and pp, and results from studies of bulk particle production, azimuthal correlations, open and ... -
High‐density magnetospheric He+ at the dayside magnetopause and its effect on magnetic reconnection
(Journal article; Peer reviewed, 2021)Observations from the Magnetospheric Multiscale (MMS) mission are used to quantify the maximum effect of magnetospheric H+ and He+ on dayside magnetopause reconnection. A data base of current-sheet crossings from the first ... -
High‐density O+ in Earth's outer magnetosphere and its effect on dayside magnetopause magnetic reconnection
(Journal article; Peer reviewed, 2019)The warm plasma cloak is a source of magnetospheric plasma that contain significant O+. When the O+ density in the magnetosphere near the magnetopause is >0.2 cm‐3 and the H+ density is <1.5 cm‐3, then O+ dominates the ... -
History Matching with Reduced Parameterization and Fast Streamline-based Sensitivities
(Master thesis, 2012-09-27)The main goal of history matching is to construct updated models capable of predicting the future performance of the reservoir more accurately. History matching method requires a solution of inverse problem to minimize the ... -
Holographic interferometry and its application in visualizing particle movements in continuous flow
(Master thesis, 2004)This thesis presents the work performed at the Department of Physics and Technology at the University of Bergen during a collaborative project funded by Statoil. The parties in this collaboration were the University of ... -
Holographic multi-stereogram constructed from computer images : Applied 3-D printer
(Master thesis, 1996)The aim of this thesis is to develop a method to convert computer images to a holographic film plate. In the recording process of holographic multi-stereograms, one uses a liquid crystal display (LCD) to show 70 different ... -
How different safety barriers affect the margin between available and required evacuation time
(Master thesis, 2015-06-01)The main purpose of this thesis has been to document that people can evacuate to temporarily safe locations / safe distances during the defined escalating jet fire scenario. It has been important to document that available ...