Browsing Fysisk institutt by Title

Now showing items 2209-2228 of 3682

  • A Novel Application of Machine Learning to Develop Pointing Models for Current and Future Radio/Sub-millimeter Telescopes 
    Nyheim, Bendik (Master thesis / Masteroppgave, 2023)
  • Novel Direct Detection Constraints on Light Dark Matter 
    Bringmann, Torsten; Pospelov, Maxim (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    All attempts to directly detect particle dark matter (DM) scattering on nuclei suffer from the partial or total loss of sensitivity for DM masses in the GeV range or below. We derive novel constraints from the inevitable ...
  • Novel method to determine recursive filtration and noise reduction in fluoroscopic imaging - a comparison of four different vendors 
    Konst, Bente; Nøtthellen, Jacob A; Næss, Stine Nalum; Båth, Magnus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Purpose: This study attempted to develop a method to measure the applied recursive filtration and to determine the noise reduction of four different fluoroscopic systems. The study also attempted to elucidate the importance ...
  • Novel production pathways for the 64,67Cu theranostic pair: Cross section measurements for the natZn(n, x)64,67Cu reactions 
    Pettersen, Nora Irene Jensen (Master thesis / Masteroppgave, 2020)
  • A Novel Projection: Towards a Deeper Understanding of Mathematical Structures in the Composite Fermion Formalism 
    Helland, Knut Halvor (Master thesis / Masteroppgave, 2018)
    Composite fermion (CF) wave functions are used to describe both a two dimensional electron gas in a strong magnetic field (the quantum Hall effect system) and rotating two dimensional atomic gases that can be either bosons ...
  • Novel silicon solar cell fabrication process 
    Lindberg, Per Filip (Master thesis / Masteroppgave, 2011)
    A frame for fabrication of novel Si solar cells at the micro and nanotechnology laboratory (MiNaLab) at the University of Oslo (UiO) has been established. The focus has been on reproducibility and the possibility to ...
  • A novel synthesis of tin oxide thin films by the sol-gel process for optoelectronic applications 
    Maharajan, Marikkannan; Venkatachalapathy, Vishnukanthan; Asokan, Vijayshankar; Jeyanthinath, Mayandi; Pearce, Joshua M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    A novel and simple chemical method based on sol-gel processing was proposed to deposit metastable orthorhombic tin oxide (SnOx) thin films on glass substrates at room temperature. The resultant samples are labeled according ...
  • Novel technique for Constraining r-Process (n, γ) Reaction Rates 
    Spyrou, A.; Liddick, S.N.; Larsen, Ann-Cecilie; Guttormsen, Magne Sveen; Cooper, K.; Dombos, A.C.; Morrissey, D.J.; Naqvi, F.; Perdikakis, G.; Quinn, S.J.; Renstrøm, Therese; Rodriguez, J.A.; Simon, A.; Sumithrarachchi, C.S.; Zegers, R.G.T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    A novel technique has been developed, which will open exciting new opportunities for studying the very neutron-rich nuclei involved in the r process. As a proof of principle, the γ spectra from the β decay of 76Ga have ...
  • Novel techniques for constraining neutron-capture rates relevant for r-process heavy-element nucleosynthesis 
    Larsen, Ann-Cecilie; Spyrou, Artemis; Liddick, Sean N.; Guttormsen, Magne Sveen (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The rapid-neutron capture process (r process) is identified as the producer of about 50% of elements heavier than iron. This process requires an astrophysical environment with an extremely high neutron flux over a short ...
  • Novel Techniques for Constraining Neutron-capture Rates relevant to Heavy-element Nucleosynthesis 
    Larsen, Ann-Cecilie; Spyrou, Artemis; Liddick, Sean N.; Guttormsen, Magne Sveen; Ingeberg, Vetle Wegner; Siem, Sunniva; Wiedeking, Mathis; Crider, Benjamin P.; Naqvi, Farheen; Perdikakis, George; Mumpower, Matthew R.; Surman, Rebecca A.; Tveten, Gry Merete; Bleuel, Darren L.; Couture, Aaron J.; Crespo Campo, Lucia; Dombos, Alexander C.; Görgen, Andreas; Lewis, Rebecca; Mosby, Shea; Nikas, Stylianos; Prokop, Christopher; Quinn, Stephen; Renstrøm, Therese; Rubio, Berta (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    In this contribution we discuss new experimental approaches to indirectly provide information on neutron-capture rates relevant to the r-process. In particular, we focus on applications of the Oslo method to extract ...
  • Novel techniques for constraining neutron-capture rates relevant to heavy-element nucleosynthesis 
    Larsen, Ann-Cecilie; Spyrou, Artemisia; Liddick, Sean N.; Guttormsen, Magne Sveen; Ingeberg, Vetle Wegner; Siem, Sunniva; Wiedeking, Mathis; Crider, Benjamin P.; Naqvi, Farheen; Perdikakis, Georgios; Mumpower, Matthew R.; Surman, Rebecca A.; Tveten, Gry Merete; Bleuel, Darren L.; Couture, Aaron J.; Crespo Campo, Lucia; Dombos, Alexander C.; Görgen, Andreas; Lewis, Raymond A.; Mosby, Shea M.; Nikas, Stylianos; Prokop, Christopher J.; Quinn, Simon J.; Renstrøm, Therese; Rubio, Berta (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    In this contribution we discuss new experimental approaches to indirectly provide information on neutron-capture rates relevant to the r-process. In particular, we focus on applications of the Oslo method to extract ...
  • Novel ZnO-based Ternary Oxides for Optoelectronic Applications 
    Trunk, Mareike (Doctoral thesis / Doktoravhandling, 2013)
    Zinc oxide (ZnO) has been used in a wide range of products for many years, including, among others, varistors, surface acoustic wave devices and cosmetics. Besides these established applications, ZnO and its ternary alloys ...
  • Nuclear astrophysics and the Oslo method : A study on experimental and theoretical radiative neutron-capture rates and their role in heavy-element nucleosynthesis 
    Pogliano, Francesco (Doctoral thesis / Doktoravhandling, 2023)
    The subject of heavy-element nucleosynthesis still holds many mysteries. Part is due to the difficulty of simulating the astrophysical scenarios where it takes place, and part is because the relevant properties of the ...
  • Nuclear Excitation Functions For Medical Isotope Production: Targeted Radionuclide Therapy via NatIr(d,x)193mPt 
    Ekeberg, Hannah Lovise Okstad (Master thesis / Masteroppgave, 2020)
  • Nuclear level densities and γ -ray strength functions in Sn 120,124 isotopes: Impact of Porter-Thomas fluctuations 
    Markova, Maria; Larsen, Ann-Cecilie; von Neumann-Cosel, Peter; Bassauer, Sergej; Görgen, Andreas; Guttormsen, Magne Sveen; Bello Garrote, Frank Leonel; Berg, Hannah; Bjørøen, Marianne Møller; Eriksen, Tomas Kvalheim; Gjestvang, Dorthea; Isaak, Johann; Mbabane, Mvuisi; Paulsen, Wanja; Pedersen, Line Gaard; Pettersen, Nora Irene Jensen; Richter, Achim; Sahin, Eda; Scholz, Philipp; Siem, Sunniva; Tveten, Gry Merete; Valsdottir, Vala Maria; Wiedeking, Mathis (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Nuclear level densities (NLDs) and γ-ray strength functions (GSFs) of 120,124Sn have been extracted with the Oslo method from proton-γ coincidences in the (p,p′γ) reaction. The functional forms of the GSFs and NLDs have ...
  • Nuclear level densities and γ -ray strength functions of Sn 111,112,113 isotopes studied with the Oslo method 
    Markova, Maria; Larsen, Ann-Cecilie; Tveten, Gry Merete; von Neumann-Cosel, Peter; Eriksen, Tomas Kvalheim; Bello Garrote, Frank Leonel; Crespo Campo, Lucia; Giacoppo, Francesca; Görgen, Andreas; Guttormsen, Magne Sveen; Hadynska-Klek, Kasia; Klintefjord, Malin; Renstrøm, Therese; Sahin, Eda; Siem, Sunniva; Tornyi, Tamas Gabor (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The 111,112,113Sn isotopes have been studied with (p,dγ), (p,p′γ), and (d,pγ) reactions to extract the nuclear level densities (NLDs) and γ-ray strength functions (GSFs) of these nuclei below the neutron separation energy ...
  • Nuclear level densities and γ-ray strength functions in samarium isotopes 
    Naqvi, F.; Simon, Anna; Guttormsen, Magne Sveen; Schwengner, R; Frauendorf, S; Reingold, C. S.; Burke, J. T.; Cooper, N; Hughes, R.O.; Ota, S; Saastamoinen, A (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The γ -strength functions and level densities in the quasicontinuum of 147 , 149 Sm isotopes have been extracted from particle- γ coincidences using the Oslo method. The nuclei of interest were populated via (p,d) reactions ...
  • Nuclear level densities and γ-ray strength functions of 120,124Sn and their application in astrophysics 
    Markova, Maria; Larsen, Ann-Cecilie; Bello Garrote, Frank Leonel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Nuclear level densities (NLDs) and γ -ray strength functions (GSFs)of 120;124 Sn have been extracted with the Oslo method and additionally constrained with the novel Shape method. The GSFs were found to be in excellent ...
  • Nuclear level densities and γ-ray strength functions of 120,124Sn for astrophysical purposes 
    Markova, Maria; Larsen, Ann-Cecilie; Bello Garrote, Frank Leonel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The nuclear level densities (NLDs) and γ-ray strength functions (GSFs) of 120,124Sn were extracted with the Oslo method, compared and combined with other experimental data to be used as inputs in the TALYS reaction code ...
  • Nuclear level densities and γ-ray strength functions of 180,181,182Ta 
    Brits, C.P.; Malatji, Kgashane L.; Wiedeking, M.; Kheswa, BV; Goriely, S.; Bello Garrote, Frank Leonel; Bleuel, D. L.; Giacoppo, Francesca; Görgen, Andreas; Guttormsen, Magne Sveen; Hadynska-Klek, Katarzyna; Hagen, Trine Wiborg; Hilaire, S.; Ingeberg, Vetle Wegner; Jia, H.; Klintefjord, Malin; Larsen, Ann-Cecilie; Majola, SNT; Papka, P.; Péru, S.; Qi, B.; Renstrøm, Therese; Rose, Sunniva Johanne; Sahin, Eda; Siem, Sunniva; Tveten, Gry Merete; Zeiser, Fabio (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    Particle- γ coincidence experiments were performed at the Oslo Cyclotron Laboratory with the 181 Ta ( d , X ) and 181 Ta ( 3 He , X ) reactions to measure the nuclear level densities (NLDs) and γ -ray strength functions ...