Sökning: "Incoherent Scattering"

Hittade 4 uppsatser innehållade orden Incoherent Scattering.

  1. 1. Implementing Total Electron Content in the Grand Unifed Incoherent Scattering Design and Analysis Program for Investigation of Causes to Scintillations

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Samuel Sonesson; [2023]
    Nyckelord :Total Electron Content; Scintillation; Incoherent Scattering; Ionosphere;

    Sammanfattning : Functionality for calculating and plotting diferent Total Electron Content (TEC) measurements such as Slant Total Electron Content (sTEC), error in sTEC, and VerticalTotal Electron Content (vTEC) was implemented into the data analysis program fromEuropean Incoherent Scattering Scientifc Association (EISCAT), the Grand Unifed Incoherent Scattering Design and Analysis Program (GUISDAP). This utilises a thin-singlelayer model of the ionosphere to convert sTEC into the more analytically useful vTEC. LÄS MER

  3. 2. Incoherent Scattering of Twisted Radar Beams from the Ionosphere

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Viktor Lannér; [2017]
    Nyckelord :ionosphere; plasma; twisted beams; orbital angular momentum; oam effects;

    Sammanfattning : In the search for natural orbital angular momentum (OAM) effects, some of the first incoherent scatter experiments with twisted radar beams during aurora were conducted at Poker Flat Incoherent Scatter Radar (PFISR), Alaska, USA, in October 2012. Experimental data of scatter from beam configurations with opposite twists were investigated. LÄS MER

  4. 3. A Probabilistic Model of Neutron Scattering in Thin Films

    Kandidat-uppsats, Lunds universitet/Matematisk statistik

    Författare :Hanna Wu; [2013]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : In the light of a world-wide shortage of helium-3 (3He) a development of novel neutron detector systems (NDS) is necessary. This requires mathematical descriptions of the neutron scattering process in thin films. LÄS MER

  5. 4. Incoherent scattering in the ionosphere from twisted radar beams

    Uppsats för yrkesexamina på avancerad nivå, Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Fredrik Waldemarsson; [2011]
    Nyckelord :OAM; orbital angular momentum; twisted radar beams; incoherent scattering;

    Sammanfattning : Twenty-odd years ago, scientists managed to produce several new techniques for manipulating certain properties of laser and microwave radiation. These new properties made it possible for the radiation to contain a lot more information than what was previously known. LÄS MER