Now showing items 1-20 of 1140

• #### A 2-D Visualisation Study of the Mechanisms behind Increased Recovery due to Polymer Injection in Sandstone ﻿

(The University of Bergen, 2011-11-20)
The potential of synthetic polymer injection, such as hydrolysed polyacrylamide (HPAM), in reservoirs has been a field of study since the 1960's [1]. The main intension of polymer injection is to improve the problems ...
Master thesis
• #### $^{3}_{\Lambda}\mathrm H$ and $^{3}_{\bar{\Lambda}} \overline{\mathrm H}$ production in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV ﻿

(Elsevier, 2016-03)
The production of the hypertriton nuclei $^{3}_{\Lambda}\mathrm H$ and $^{3}_{\bar{\Lambda}} \overline{\mathrm H}$ has been measured for the first time in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV with the ALICE ...
Journal article
• #### 3Λh and 3‾Λ‾h lifetime measurement in Pb–Pb collisions at √sNN = 5.02 TeV via two-body decay ﻿

(Elsevier, 2019-10)
An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been ...
Journal article
• #### Absorption properties of high-latitude Norwegian coastal water: The impact of CDOM and particulate matter ﻿

(Elsevier, 2016-09)
We present data from measurements and analyses of the spectral absorption due to colored dissolved organic matter (CDOM), total suspended matter (TSM), phytoplankton, and non-algal particles (NAP) in high-latitude northern ...
Journal article
• #### Acoustic effects on pulse forming in ultrasound transit time gas flowmeters at no flow conditions ﻿

(The University of Bergen, 1995)
Master thesis
• #### Acoustic measurement of liquid density with applications for mass measurement of oil ﻿

(The University of Bergen, 2007-11-23)
Doctoral thesis
• #### Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell ﻿

(IEEE, 2008-08-08)
The known acoustic methods for obtaining the pressure reflection coefficient from a buffer rod based measurement cell are presented, along with 2 new generic approaches for measuring the pressure reflection coefficient ...
Journal articlePeer reviewed
• #### Acoustic Signatures of Gas Hydrates - Observations and Modelling ﻿

(The University of Bergen, 2017-08-08)
Interpretation of a Bottom Simulating Reflector (BSR) associated with gas hydrate accumulations in seismic, depend on gas hydrate saturation and distribution in pore voids. The BSR cannot predict gas hydrate saturation ...
Master thesis
• #### Adaptive transdure basert på tidsreversering. Målinger på en 5x5 array prototype ﻿

(The University of Bergen, 2009-06-11)
Utvikling av adaptiv transduserarray som er ment for tidsreverserende bruk på en olje/gass-separator. Prinsippet består i styring av en transduser oppdelt i små ankeltceller (array). Hver celle styres av sin egen ...
Master thesis
• #### Addressing the hypertriton lifetime puzzle with ALICE at the LHC ﻿

(Elsevier, 2019)
The ALICE Collaboration collected a large data sample of Pb-Pb collisions at√sNN=5.02 TeV in 2015 at the LargeHadron Collider (LHC) and the excellent particle identification (PID) capabilities allow for the ...
Journal article
• #### Aircraft interaction with electric field of thundercloud and observations of hard radiation ﻿

(The University of Bergen, 2018-06-16)
The purpose of this thesis is to study the relationship between the different phases of lightning flashes and the production of high-energy emissions, as well as highenergy emissions observed from thunderclouds. The data ...
Master thesis
• #### ALICE measurement of the $J/\psi$ nuclear modification factor at mid-rapidity in Pb–Pb collisions at $\sqrt{{s}_{NN}}=$ 5.02 TeV ﻿

(Elsevier, 2017-11)
ALICE at the LHC provides unique capabilities to study charmonium production at low transverse momenta ( p T ). At central rapidity, ( |y|<0.8 ), ALICE can reconstruct J/ ψ via their decay into two electrons down to zero ...
Journal article
• #### ALICE measurements of flow coefficients and their correlations in small (pp and p–Pb) and large (Xe–Xe and Pb–Pb) collision systems ﻿

(Elsevier, 2019)
Many observables which are used as a signature of the collective effects in heavy-ion collisions when measured in high multiplicity pp and pA interactions reveal a very similar behaviour. We will present first measurements ...
Journal article
• #### ALICE results on system-size dependence of charged-particle multiplicity density in p–Pb, Pb–Pb and Xe–Xe collisions ﻿

(Elsevier, 2019)
Particle production at LHC energies involves the interplay of hard (perturbative) and soft (non-perturbative) QCD processes. Global observables, such as the charged-particle multiplicity, are related to the initial geometry ...
Journal article
• #### ALICE TPC Upgrade Activities for LHC Run 3 and Beyond: "SAMPA ASIC Tests with GEM Detector Prototype" ﻿

(The University of Bergen, 2015-09-11)
The Time Projection Chamber (TPC) signal readout of the ALICE detector is being upgraded to accommodate the higher collision rates and -energies during LHC Run 3 in 2018. Due to the increased collision rates, the TPC drift ...
Master thesis
• #### The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events ﻿

(Elsevier, 2010-10-01)
The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment ...
Journal article
• #### The ALICE Transition Radiation Detector: Construction, operation, and performance ﻿

(Elsevier, 2018-02)
The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD ...
Journal article
• #### Altering the wetting properties of FEP films by nano-structuring the surface using reactive ion etching ﻿

(The University of Bergen, 2017-10-18)
Renewable energy sources has become a large field of research, and in the recent years, methods to harvest energy from rain drops have been developed. This technology is based on rain drops rolling or sliding on a polymer ...
Master thesis
• #### Alternative gauge for the description of the light-matter interaction in a relativistic framework ﻿

(American Physical Society, 2017-08)
We present a generalized velocity gauge form of the relativistic laser-matter interaction. In comparison with the (equivalent) regular minimal coupling description, this form of light-matter interaction results in superior ...
Journal article
• #### An altitude and distance correction to the initial fluence distribution of TGFs ﻿

(Wiley, 2014-10)
The source fluence distribution of terrestrial gamma ray flashes (TGFs) has been extensively discussed in recent years, but few have considered how the TGF fluence distribution at the source, as estimated from satellite ...
Journal article