Browsing Fysisk institutt by Title
Now showing items 1497-1516 of 3667
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(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 ...
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Ion Implantation of ZnO by the Group IV elements Si and Ge: Doping, defects and nanocrystallization (Master thesis / Masteroppgave, 2016)Zinc Oxide (ZnO) is a promising material for future use in both solar cells as a transparent conductive oxide, in addition to a range of other electrical applications, due to its low cost, transparency, and electrical ...
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(Master thesis / Masteroppgave, 2020)I denne oppgaven er forekomsten av fasescintillasjoner på GNSS-signaler over deler av Dronning Maud Land i Antarktis kartlagt, ved bruk av scintillasjonsmottakere på Troll stasjonen (geografiske koordinater: 72.0$^\circ$S, ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)For over a decade, the Super Dual Auroral Radar Network and the Active Magnetosphere and Planetary Electrodynamics Response Experiment have been measuring ionospheric convection and field-aligned currents in the high-latitude ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)Abrupt changes in the solar wind dynamic pressure can greatly affect the Earth's magnetosphere-ionosphere system. We present an ionospheric flow vortex in the morning sector during the sudden decrease in the solar wind ...
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(Master thesis / Masteroppgave, 2023)A geomagnetic storm originates from high-energy solar events, e.g. a coronal mass ejection, causing massive solar winds leading to complex disturbances and changes to the near-Earth space environment. This master's thesis ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)The Australian NWC (North West Cape) signal transmitter is known to strongly interfere with the topside ionosphere. We analyze 456 conjunctions between Swarm A, B and NWC, in addition to 58 conjunctions between NorSat-1 ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)In this study, we present global climatological distributions of ionospheric plasma irregularities based on measurements by the Swarm satellites. These first global statistics obtained by direct, in situ measurements of ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The polar ionosphere is often characterized by irregularities and fluctuations in the plasma density. We present a statistical study of ionospheric plasma irregularities based on the observations from the European Space ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)To study and characterise the ionospheric plasma irregularities at all latitudes, one can employ in-situ measurements by satellites in polar orbits, such as the European Space Agency’s Swarm mission. Based on the Swarm ...
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(Doctoral thesis / Doktoravhandling, 2024)Space weather affects life on Earth in a variety of different ways. One of the arguably most well-known and recognizable space weather effects are the auroras (aurora borealis and aurora australis for the northern and for ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)Using a combination of deep level transient spectroscopy, secondary ion mass spectrometry, proton irradiation, and hybrid functional calculations, we identify two similar deep levels that are associated with Fe impurities ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)Hydrothermally grown ZnO samples, annealed in Zn-rich and O-rich ambients, have been investigated by deep level transient spectroscopy. A clear correlation has been found between the annealing treatment and the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Thermal vorticity in non-central Au+Au collisions at energies 7.7 ≤ √s ≤ 62.4 GeV is calculated within the UrQMD transport model. Tracing the Λ and Λ¯ hyperons back to their last interaction point we were able to obtain ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The low-lying structures of the midshell ν g9/2 Ni isotopes 72Ni and 74Ni have been investigated at the RIBF facility in RIKEN within the EURICA collaboration. Previously unobserved low-lying states were accessed for the ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)Experimental results of the 237Np(d, pγ) 238Np reaction are presented, which verifies the generalized Brink-Axel (gBA) hypothesis for γ transitions between states in the quasi-continuum. The gBA hypothesis holds not only ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)Centuries of work have highlighted the importance of several characteristics on fracture propagation. However, the relative importance of each characteristic on the likelihood of propagation remains elusive. We rank this ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)The transitional nuclei 134 Ba and 133 Ba are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali ...
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)© 2015 American Physical Society
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(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)The radiation tolerance of isotopic enriched and natural silicon carbide junction barrier Schottky diodes are compared under heavy ion irradiation. Both types of devices experience leakage current degradation as well as ...