Now showing items 98-117 of 1540

• #### Characterization of a neutral helium beam for helium microscopy ﻿

(Master thesis, 2015-06-29)
Neutral helium beam microscopy is a new development in scientific instrumentation where neutral helium atoms are utilized to image a sample. The main advantage of using neutral helium is the significantly smaller energy ...
• #### Characterization of Associating Polymer (AP) Solutions. Influences on flow behavior by the degree of hydrophobicity and salinity ﻿

(Master thesis, 2013-06-02)
The most applied polymer today for chemical improved oil recovery (IOR) processes, such as polymer flood and/or polymer well treatments, is the synthetic partially hydrolyzed polyacrylamide (HPAM) and its derivatives. ...
• #### Characterization of boron-coated silicon sensors for thermal neutron detection ﻿

(Journal article; Peer reviewed, 2020)
Silicon neutron detectors can operate at low voltage and come with ease of fabrication and the possibility of integration of readout electronics and thus are attractive from an application point of view. In this paper, we ...

(Master thesis, 2013-09-11)
It is surprisingly problematic to to accurately measure light in the laboratory. Even more so when measuring in the field. There are lots of areas where measuring light spectrum and irradiance outside a laboratory is of ...
• #### Characterization of monolithic CMOS pixel sensor chip with ion beams for application in particle computed tomography ﻿

(Peer reviewed; Journal article, 2019)
Particle computed tomography (pCT) is an emerging imaging modality that promises to reduce rangeuncertainty in particle therapy. The Bergen pCT collaboration aims to develop a novel pCT prototype basedon the ALPIDE monolithic ...
• #### Characterization of the ALPIDE chip with Helium-4 ions for Proton Computed Tomography ﻿

(Master thesis, 2018-12-06)
Particle therapy has become an appealing therapeutic option for patients with various tumor types. The physical properties of charged particles allow for an improved dose distribution conformality compared to conventional ...
• #### Characterization of the ALPIDE Detector with Proton Beams for the Development of a Prototype Computed Tomography Machine at the University of Bergen ﻿

(Master thesis, 2018-07-04)
In conventional radio therapy, photons is used in the treatment. Treatment with protons, however, greatly reduce the energy which is deposited in healthy tissue surrounding the tumor. The aim for the pCT group at the ...
• #### Characterization studies of a GEM detector prototype for the ALICE TPC upgrade for LHC Run 3 and beyond ﻿

(Master thesis, 2016-11-21)
The multiwire proportional chamber signal readout of the ALICE Time Projection Chamber (TPC) will be replaced by Gas Electron Multiplier (GEM) detectors to meet the new requirements due to higher collision rate and energies ...
• #### Charge correlations using the balance function in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2013-06)
In high–energy heavy–ion collisions, the correlations between the emitted particles can be used as a probe to gain insight into the charge creation mechanisms. In this article, we report the first results of such studies ...
• #### Charge separation relative to the reaction plane in Pb-Pb collisions at $\sqrt{s_{NN}}$= 2.76 TeV ﻿

(Peer reviewed; Journal article, 2013-01)
Measurements of charge dependent azimuthal correlations with the ALICE detector at the LHC are reported for Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV. Two- and three-particle charge-dependent azimuthal correlations ...
• #### Charge-dependent flow and the search for the chiral magnetic wave in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2016-04)
We report on measurements of a charge-dependent flow using a novel three-particle correlator with ALICE in Pb–Pb collisions at the LHC, and discuss the implications for observation of local parity violation and the Chiral ...
• #### Charged Higgs boson searches and SemiConductor Tracker commissioning for the ATLAS experiment ﻿

(Doctoral thesis, 2007-06-21)
The ATLAS (A Toroidal Lhc ApparatuS) experiment is one of four major experiments presently being installed at the upcoming Large Hadron Collider (LHC) at the European Centre for Nuclear Research (CERN) outside Geneva. In ...
• #### Charged jet cross section and fragmentation in proton-proton collisions at √s=7  TeV ﻿

(Peer reviewed; Journal article, 2019-01-31)
We report the differential charged jet cross section and jet fragmentation distributions measured with the ALICE detector in proton-proton collisions at a center-of-mass energy √s=7  TeV. Jets with pseudorapidity|η|<0.5 ...
• #### Charged jet cross sections and properties in proton-proton collisions at $\sqrt{s}=7$ TeV ﻿

(Peer reviewed; Journal article, 2015-06)
The differential charged jet cross sections, jet fragmentation distributions, and jet shapes are measured in minimum bias proton-proton collisions at centre-of-mass energy $\sqrt{s}=7$ TeV using the ALICE detector at the ...
• #### Charged Particle Lithography for the Fabrication of Nanostructured Optical Elements ﻿

(Doctoral thesis, 2018-08-31)
This thesis work focuses on nanostructured optical elements for light and matter waves that have been fabricated using helium ion beam lithography and electron beam lithography. The motivation of this thesis has been to ...
• #### Charged-Higgs production in the Two-Higgs-doublet model — the τ ν channel ﻿

(Peer reviewed; Journal article, 2015-06-15)
We update the allowed parameter space of the CP-violating 2HDM with Type II Yukawa couplings, that survives the current experimental and theoretical constraints on the model. For a representative set of allowed parameter ...
• #### Charged-particle multiplicities in $pp$ interactions at $\sqrt{s}$ = 900 GeV measured with the ATLAS detector at the LHC ﻿

(Peer reviewed; Journal article, 2010-04)
The first measurements from proton-proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy ...
• #### Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s = 0.9, 7, and 8 TeV ﻿

(Peer reviewed; Journal article, 2017-12-09)
We present the charged-particle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0 ) for pp collisions at √s=0.9,7 , and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector ...
• #### Charged-particle multiplicity measurement in proton–proton collisions at √s = 0.9 and 2.36 TeV with ALICE at LHC ﻿

(Peer reviewed; Journal article, 2010-07-12)
Charged-particle production was studied in proton–proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |η|<1.4. In the central region ...
• #### Charged-particle multiplicity measurement in proton–proton collisions at √s = 7 TeV with ALICE at LHC ﻿

(Peer reviewed; Journal article, 2010-08-03)
The pseudorapidity density and multiplicity distribution of charged particles produced in proton–proton collisions at the LHC, at a centre-of-mass energy Ös=7s=7 TeV, were measured in the central pseudorapidity region ...