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Now showing items 2501-2600 of 3626
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present the first measurement of the two-particle transverse momentum differential correlation function, P2≡ ⟨ Δ p T Δ p T ⟩ / ⟨ p T ⟩ 2 , in Pb-Pb collisions at √ s N N = 2.76 TeV . Results for P2 are reported as ...
(Doctoral thesis / Doktoravhandling, 2017)
Accelerator-based research facilities play a key role in modern research, where they increasingly push the technical limits. At the same time, they aim at competing with industrial and nuclear research facilities in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Nuclear level densities (NLDs) and γ-ray strength functions (γSFs) have been extracted from particle-γ coincidences of the 92Zr(p,p′γ)92Zr and 92Zr(p,dγ)91Zr reactions using the Oslo method. The new 91,92ZrγSF data, combined ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The production of K∗ ( 892 ) 0 and ϕ ( 1020 ) mesons in proton-proton ( p p ) and lead-lead (Pb-Pb) collisions at √ s NN = 2.76 TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The transverse momentum distributions of the strange and double-strange hyperon resonances ((1385)±, (1530)0) produced in p–Pb collisions at √sNN = 5.02 TeV were measured in the rapidity range −0.5 < yCMS < 0 for event ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
A particularly challenging part of the question of how elements heavier than iron are created in extreme, astrophysical environments is the creation of the so-called p-nuclei, which are believed to be mainly produced in ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Fast-neutron-induced fission of 238 U at an energy just above the fission threshold is studied with a novel technique which involves the coupling of a high-efficiency γ-ray spectrometer (MINIBALL) to an inverse-kinematics ...
(Master thesis / Masteroppgave, 2017)
A future possible acceleration technique for linear colliders is plasma wakefield acceleration. One of the questions unanswered today is whether we can use this technology to achieve TeV-scale acceleration with a good ...
(Master thesis / Masteroppgave, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Complex systems close to their critical state can exhibit abrupt transitions—avalanches—between their metastable states. It is a challenging task to understand the mechanism of the avalanches and control their behavior. ...
(Master thesis / Masteroppgave, 2017)
We implement a method for constructing analytic interatomic potentials by fitting artificial neural networks to data from molecular dynamics simulations. The LAMMPS distribution is extended with an algorithm for sampling ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
By determining the location and size of the Region 1 (R1) and Region 2 (R2) large‐scale field‐aligned currents (FACs) from Active Magnetosphere and Planetary Electrodynamics Response Experiment data, we are able to study ...
Group-IV (Si, Ge, and Sn)-doped AgAlTe2 for intermediate band solar cell from first-principles study
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
Earlier studies of chalcopyrites as the absorber for intermediate band solar cells (IBSCs) mainly focused on Cu-based compounds, whose intermediate band is usually empty due to its intrinsic p-type conductivity. This is ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
The radiation environment encountered at high-energy hadron accelerators strongly differs from the environment relevant for space applications. The mixed-field expected at modern accelerators is composed of charged and ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
The transport of fluids through the Earth’s crust controls the redistribution of elements to form mineral and hydrocarbon deposits, the release and sequestration of greenhouse gases, and facilitates metamorphic reactions ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The EEG signal is generated by electrical brain cell activity, often described in terms of current dipoles. By applying EEG forward models we can compute the contribution from such dipoles to the electrical potential ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
In this paper we present new results for prompt fission γ -ray spectral characteristics from the thermal neutron induced fission of 240 Pu ∗ . The measured spectra were unfolded by using the detectors' response functions, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Reducing or controlling cation disorder in Cu2ZnSnS4 is a major challenge, mainly due to low formation energies of the anti-site pair (Cu−Zn + Zn+Cu) and the compensated Cu vacancy (V−Cu + Zn+Cu). We study the electronic ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
To accelerate environmental friendly thin‐film photovoltaic technologies, earth‐abundant, non‐toxic, and low‐cost materials are demanded. We study the compounds of Cu2Sn1−xGexS3 and Cu2Sn1−xSixS3 (x = 0, 0.5, and 1) employing ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
In this paper, we present observations of cold (0–70 eV) plasma density in the magnetotail lobes. The observations and results are based on 16 years of Cluster observation of spacecraft potential measurements converted ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We studied the photoluminescence (PL) properties of (Ce + Yb) co-doped ZnO thin films as a function of high temperature annealing. The films were fabricated by magnetron sputtering. After 1000-1100°C annealing, the near ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We review the morphology and dynamics of the electrical current systems of the terrestrial magnetosphere and ionosphere. Observations from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Current-source density (CSD) analysis is a well-established method for analyzing recorded local field potentials (LFPs), that is, the low-frequency part of extracellular potentials. Standard CSD theory is based on the ...
(Master thesis / Masteroppgave, 2017)
Going wireless has revolutionised handheld and wearable devices today. On comparing battery technology with other aspects of portable device technology, it has been a bottleneck in new innovation of miniaturised electronic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
For ethical reasons and animal welfare, it is becoming increasingly more important to carry out ecological surveys with a non-invasive approach. Information about fish distribution and abundance in the upper water column ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
Identification of radiation-induced radicals in relatively simple molecules is a prerequisite for the understanding of reaction pathways of the radiation chemistry of complex systems. Sucrose presents an additional practical ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Spike sorting is a critical first step in extracting neural signals from large-scale electrophysiological data. This manuscript describes an efficient, reliable pipeline for spike sorting on dense multi-electrode arrays ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
An experimental observation of the structuring of a granular suspension under the progress of a gas/liquid meniscus in a narrow tube is reported here. The granular material is moved and compactifies as a growing accumulation ...
(Master thesis / Masteroppgave, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Mapping the complex heterogeneity of vascular tissue in the brain is important for understanding cerebrovascular disease. In this translational study, we build on previous work using vessel architectural imaging (VAI) and ...
(Chapter / Bokkapittel / AcceptedVersion; Peer reviewed, 2017)
Wafer-level thermocompression bonding (TCB) using aluminum (Al) is presented as a hermetic sealing method for MEMS. The process is a CMOS compatible alternative to TCB using metals like gold (Au) and copper (Cu), which are ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
In recent years, there has been a growing interest in how students make sense of physics concepts, but there is as of yet little consensus on what it actually means for students to "make sense" of physics. We propose a ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present a multiinstrumented approach for the analysis of the Arctic ionosphere during the 19 February 2014 highly complex, multiphase geomagnetic storm, which had the largest impact on the disturbance storm-time index ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The transverse momentum ( pT ) spectra and elliptic flow coefficient ( v2 ) of deuterons and anti-deuterons at mid-rapidity ( |y|<0.5 ) are measured with the ALICE detector at the LHC in Pb–Pb collisions at sNN−−−√ ...
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We perform experiments where air is injected at a constant overpressure Pin , ranging from 5 to 250 kPa, into a dry granular medium confined within a horizontal linear Hele-Shaw cell. The setup allows us to explore compacted ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
ALICE measured the nuclear modification factor (RAA) and elliptic flow (v2) of D mesons (D0, D+, D∗+ and D+ s ) in semi-central Pb–Pb collisions at √sNN = 5.02 TeV. The increased amount of data in semi-central Pb–Pb events ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present simultaneous observations of magnetosphere-ionosphere-thermosphere coupling over Svalbard during a traveling convection vortex (TCV) event. Various spaceborne and ground-based instruments made coordinated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
At sufficiently high temperature and energy density, nuclear matter undergoes a transition to a phase in which quarks and gluons are not confined: the quark–gluon plasma (QGP)1. Such an exotic state of strongly interacting ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Heart rate variability (HRV) has become an increasingly popular index of cardiac autonomic control in the biobehavioral sciences due to its relationship with mental illness and cognitive traits. However, the intraindividual ...
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Master thesis / Masteroppgave, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
(Master thesis / Masteroppgave, 2017)
A comprehensive introduction to the theory of modular symmetry in the renormalization group flow of the quantum Hall effect is given. The theory is tested with all available experimental scaling data, across a wide range ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We delineate the allowed parameter and mass range for a wino-like dark matter particle containing some Higgsino admixture in the MSSM by analysing the constraints from diffuse gamma-rays from the dwarf spheroidal galaxies, ...
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Two-particle angular correlations were measured in pp collisions at s√=7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
The electric potential distribution around a dust particle immersed in a magnetised supersonic plasma flow is studied by numerical simulations. It is shown that with increasing magnetisation of plasma, the peak in the wake ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The production cross sections for prompt charmed mesons D0, D+, D∗+ and D+s were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy s√=7 TeV with the ALICE detector at the Large Hadron Collider ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
I samarbejde med Københavns Kommune afprøvede CITS konsortiet potentialet i WiFi-baseret positionering med en forsøgsstrækning på H.C. Andersens Boulevard i vintermånederne 2014-2015. WiFipositioneringen giver et nyt ...
(Master thesis / Masteroppgave, 2017)
This thesis was initiated by the University of Oslo at the Department of Informatics. The field of study regarding snow analysis, characterization and imaging of snow layers, has been an ongoing study-field at the Department ...
(Master thesis / Masteroppgave, 2017)
The material CoNb2O6 has in recent times attracted much attention due to having rich physics in applied magnetic fields. This thesis explores whether or not it is possible to observe magnetic Bloch oscillations in CoNb2O6. ...
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present the first azimuthally differential measurements of the pion source size relative to the second harmonic event plane in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of √ s N N = 2.76 ...
(Master thesis / Masteroppgave, 2017)
We perform molecular dynamics simulations using LAMMPS, and model a single spherical asperity indenting a flat substrate. Both bodies are made by b-cristobalite, and we apply the Vashishta potential. The LAMMPS distribution ...
(Master thesis / Masteroppgave, 2017)
(Doctoral thesis / Doktoravhandling, 2017)
In this work, a novel dynamic contrast-based magnetic resonance imaging (MRI) method, called ‘split dynamic MRI’, is presented, which show to improve the differential diagnosis of breast cancer, as compared to conventional ...
(Master thesis / Masteroppgave, 2017)
This thesis describes designing and building of a low cost, wireless Water Profile Sensor (WPS). Development of the WPS is part of the Autonomous Mobile Hydroacoustic Assessment project (AMHA) run by the Sonar group at the ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
Neutron-capture reactions play an important role in heavy element nucleosynthesis, since they are the driving force for the two processes that create the vast majority of the heavy elements. When a neutron capture occurs ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2017)
The fractional quantum Hall effect, being one of the most studied phenomena in condensed matter physics during the past thirty years, has generated many groundbreaking new ideas and concepts. Very early on it was realized ...
(Master thesis / Masteroppgave, 2017)
In this thesis we explore bound state formation from a QFT perspective, which is particularly interesting for dark matter. We explicitly study bound state formation for a pseudo-scalar mediator.
(Master thesis / Masteroppgave, 2017)
(Master thesis / Masteroppgave, 2017)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at sNN−−−√=5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (−4.46 < y cms ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
Nuclear level densities and γ-ray strength functions of 56,57Fe have been extracted from proton-γ coincidences. A low-energy enhancement in the γ-ray strength functions up to a factor of 30 over common theoretical E1 models ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The characterisation of the jet substructure can give insight into the microscopic nature of the modification inducedon high-momentum partons by the Quark-Gluon Plasma that is formed in ultra-relativistic heavy-ion collisions. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
We present the first ever measurements of femtoscopic correlations between the K0 S and K± particles. The analysis was performed on the data from Pb–Pb collisions at √sNN = 2.76 TeV measured by the ALICE experiment. The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The activity pattern and temporal dynamics within and between neuron ensembles are essential features of information processing and believed to be profoundly affected by anesthesia. Much of our general understanding of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Azimuthally differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze-out, provide very important information on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
In ultra relativistic heavy-ion collisions at the Large Hadron Collider (LHC), conditions are met to produce a hot, denseand strongly interacting medium known as the Quark Gluon Plasma (QGP). Quarks and gluons from incoming ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at sNN−−−√=2.76 TeV and p-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Aim
To evaluate the patterns of loco-regional recurrences in head and neck cancer patients
Methods
Twenty-six out of 112 patients treated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton–proton collisions, at s√= 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range |η|<2, was ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The production of muons from heavy-flavour hadron decays in p–Pb collisions at was studied for GeV/c with the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) and backward ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The second and the third order anisotropic flow, V2and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2and ε3, in the initial density distribution. In addition to their dependence on ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Educational software (apps) can improve science education by providing an interactive way of learning about complicated topics that are hard to explain with text and static illustrations. However, few educational apps are ...
(Master thesis / Masteroppgave, 2017)
We implement two different ab initio electronic structure methods: Hartree-Fock (HF), and quantum variational Monte Carlo (VMC). Gaussian type orbitals are used for the HF method, while the VMC framework allows more general ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The role of spatial resolution of the electron gyroradius in electrostatic particle-in-cell (PIC) simulations is studied. It is demonstrated that resolving the gyroradius is crucial for simulations of strongly magnetized ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Strangeness production is a key tool to understand the properties of the medium formed in heavy-ion collisions: an enhanced production of strange particles was early proposed as one of the signatures of the Quark-Gluon ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The ALICE collaboration has measured the inclusive charmonium production at forward rapidity in Pb-Pb and p-Pb collisions at √sNN = 5.02 TeV and √sNN = 8.16 TeV, respectively. In Pb-Pb collisions, the J/ψ and ψ(2S) nuclear ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Throat aurora is defined as south-north aligned auroral arcs equatorward of the dayside cusp aurora and was suggested to be the results of cold magnetospheric plasma interaction with magnetopause reconnection, but its ...