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Sökning: WFRF:(Lindberg Simon 1987) > Övrigt vetenskapligt/konstnärligt

  • Resultat 1-6 av 6
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  • Johansson, Håkan T, 1977, et al. (författare)
  • GGLAND - command line simulations
  • 2014
  • Ingår i: GSI Scientific Report 2013. - 0171-4546. ; 2014-1, s. 154-
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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  • Cosmas, John, et al. (författare)
  • Towards joint communication and sensing (Chapter 4)
  • 2023
  • Ingår i: Towards Sustainable and Trustworthy 6G: Challenges, Enablers, and Architectural Design. - 9781638282396 ; , s. 121-158
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • Localization of user equipment (UE) in mobile communication networks has been supported from the early stages of 3rd generation partnership project (3GPP). With 5th Generation (5G) and its target use cases, localization is increasingly gaining importance. Integrated sensing and localization in 6th Generation (6G) networks promise the introduction of more efficient networks and compelling applications to be developed.
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  • Lindberg, Simon, 1987 (författare)
  • Exciting Neutron-rich Nuclei
  • 2018
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Atoms are the building blocks which make up our world. Their stability depends on the atomic nucleus, consisting of protons and neutrons. Nuclei are complex many-body quantum mechanical systems governed by the nucleon-nucleon interaction. The complexity and the intricate nature of the nucleon-nucleon interaction so far prevented the description of all existing nuclei by a single model. Furthermore, nuclei and nuclear reactions in stars and stellar explosions play a key role in astrophysics. This motivates experiments to improve our understanding of nuclei and their role in the cosmos. In this thesis I present results from experiments in complete kinematics performed at the radioactive beam facilities RIKEN and GSI/FAIR. The focus is on the rst measurement of unbound states in 29Ne, that were studied using neutron knockout reactions from 30Ne. The invariant-mass spectrum shows two peaks, one at around 0.5 MeV and another one at 1.3 MeV. Moreover, results from an overview experiment, investigating light neutron-rich nuclei, between 3 < Z < 10, are also presented. The results cover protonremoval cross sections in boron and carbon, important for designing future experiments, and unbound states in 26F where the rst unbound states are observed at the relative energy 323 keV. Furthermore, the structure of the unbound nucleus 13Be, which is important for its bridging role between the bound 12Be and the Borromean halo nucleus 14Be, is studied. Also measurements on Coulomb dissociation of 20;21N and 18C are presented which allow to improve our understanding of r-process nucleosynthesis.
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6.
  • Lindberg, Simon, 1987 (författare)
  • Reactions with relativistic radioactive beams and gamma multiplicities
  • 2016
  • Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Experiments with relativistic radioactive beams are used to study the properties of exotic nuclei. The experimental setup used in this thesis is a complex system of detectors for identifying and measuring the 4-momenta of all incoming nuclei and products created when the nuclei impinge on a reaction target. The high spatial resolution of the tracking detectors makes it impossible to align all the detectors with sufficient mechanical precision. Instead the measured tracks are used to calculate the exact detector positions during the data analysis. In this thesis a simplified and improved method is presented for the detector alignment.In the target different types of reactions can take place. The reactions of most interest in this thesis are fragmentation and knockout reactions. In these reactions nucleons are removed from the nuclei, creating new isotopes which typically are in their excited state. If the excitation energy is lower than the particle emission threshold, the excitation energy is emitted as gamma radiation. The gamma multiplicity gives information about the excited states populated and the reaction mechanism. In this thesis radioactive beams ranging from proton-rich Li to neutron-rich F isotopes have been created and studied. The wide range of isotopes offers the possibility to compare the gamma multiplicities between different reaction channels and the different isotopes.The analysis showed that the background contribution to the gamma multiplicity was too large to obtain any reliable results. Different approaches of reducing the background and possible explanations of the large contributions are discussed in the thesis.
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  • Resultat 1-6 av 6

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