Sökning: "Dopplerskift"

Hittade 2 uppsatser innehållade ordet Dopplerskift.

1. 1. One-Dimensional Velocity Distributions of Fast Ions under RF Heating Including Doppler Shift in Tokamaks

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Lukas Bähner; [2022]
   Nyckelord :plasma; fusion; ICRH; Ion Cyclotron Resonance Heating; RF; radio frequency; Fokker-Planck equation; Fokker-Planck solver; quasilinear operator; Coulomb collision; Doppler shift; velocity distribution; local temperature; plasma; fusion; ICRH; joncyklotronuppvärmning; RF; radiofrekvens; Fokker-Planck-ekvationen; Fokker-Planck-lösare; kvasilinjär operator; Coulombkollisioner; Dopplerskift; hastighetsfördelning; lokal temperatur;

   Sammanfattning : The goal of nuclear fusion research is to create a clean and virtually limitless energy source. In order to that, a plasma must be heated to hundreds of millions degrees Celsius. A commonly used heating mechanism is ion cyclotron resonance heating, where antennas emit radio waves into the plasma. LÄS MER

3. 2. Optimisation of line of sight matching to obtain wind vectors from the SIW satellite

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Theresia Hestad; [2021]
   Nyckelord :Remote sensing; Wind measurements; Middle atmosphere; Retrieval; Scan bias; Satellite;

   Sammanfattning : SIW, Stratospheric Inferred Winds, is one of the upcoming Swedish research satellites, aiming to study the winds in the middle atmosphere by measuring the Doppler shifts in molecules such as O3 with a limb viewing sub-mm spectrometer. By conducting simulations on the expected observations, the pointing sensitivity requirement of the satellite was investigated to be able to optimise the matching of the wind vectors. LÄS MER