Blar i Department of Physics and Technology på tittel
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Acoustic Methods for Obtaining the Pressure Reflection Coefficient from a Buffer Rod Based Measurement Cell
(Peer reviewed; Journal article, 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 ... -
Acoustic Signatures of Gas Hydrates - Observations and Modelling
(Master thesis, 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 or ... -
Adaptive transdure basert på tidsreversering. Målinger på en 5x5 array prototype
(Master thesis, 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 elektronikk, ... -
Addressing the hypertriton lifetime puzzle with ALICE at the LHC
(Peer reviewed; Journal article, 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 detection of ... -
AE, DST, and Their SuperMAG Counterparts: The Effect of Improved Spatial Resolution in Geomagnetic Indices
(Journal article; Peer reviewed, 2020)For decades, geomagnetic indices have been used extensively to parameterize space weather events, as input to various models and as space weather specifications. The auroral electrojet (AE) index and disturbance storm time ... -
AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
(Journal article; Peer reviewed, 2020)We propose in this White Paper a concept for a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and ... -
AGILE Observations of GRB 220101A: A "new Year's Burst" with an Exceptionally Huge Energy Release
(Journal article; Peer reviewed, 2022)We report the AGILE observations of GRB 220101A, which took place at the beginning of 2022 January 1 and was recognized as one of the most energetic gamma-ray bursts (GRBs) ever detected since their discovery. The AGILE ... -
Aircraft and spacecraft observations of high-energy radiation associated with lightning leaders
(Doctoral thesis, 2022-10-03)Denne avhandlingen undersøker røntgen og gammastråling assosiert med lyn ledere, observert av instrumenter på fly og fra verdensrommet. Avhandlingen består av tre forskningsartikler, publisert i Journal of Geophysical ... -
Aircraft interaction with electric field of thundercloud and observations of hard radiation
(Master thesis, 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 ... -
ALICE measurement of the \(J/\psi\) nuclear modification factor at mid-rapidity in Pb–Pb collisions at \(\sqrt{{s}_{NN}}=\) 5.02 TeV
(Peer reviewed; Journal article, 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 ... -
ALICE measurements of flow coefficients and their correlations in small (pp and p–Pb) and large (Xe–Xe and Pb–Pb) collision systems
(Peer reviewed; Journal article, 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 ... -
ALICE results on system-size dependence of charged-particle multiplicity density in p–Pb, Pb–Pb and Xe–Xe collisions
(Peer reviewed; Journal article, 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 ... -
ALICE TPC Upgrade Activities for LHC Run 3 and Beyond: "SAMPA ASIC Tests with GEM Detector Prototype"
(Master thesis, 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 ... -
The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
(Peer reviewed; Journal article, 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 ... -
The ALICE Transition Radiation Detector: Construction, operation, and performance
(Peer reviewed; Journal article, 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 ... -
Alignment of the ATLAS Inner Detector in Run 2
(Journal article; Peer reviewed, 2020-12-24)The performance of the ATLAS Inner Detector alignment has been studied using pp collision data at s√=13TeV collected by the ATLAS experiment during Run 2 (2015–2018) of the Large Hadron Collider (LHC). The goal of the ... -
Et allmenndannende naturfag. Fagets betydning for demokratisk deltagelse
(Journal article, 2006) -
Altering the wetting properties of FEP films by nano-structuring the surface using reactive ion etching
(Master thesis, 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 ... -
Alternative gauge for the description of the light-matter interaction in a relativistic framework
(Peer reviewed; Journal article, 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 ... -
An altitude and distance correction to the initial fluence distribution of TGFs
(Peer reviewed; Journal article, 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 ...