Sökning: "stray light"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden stray light.

  1. 1. Aktivitetsgrad och Avkastning

    Kandidat-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Alice Corneliusson; Axel Galliher; [2022]
    Nyckelord :Aktiv fondförvaltning; Active share; Tracking error; Dolda indexfonder; Business and Economics;

    Sammanfattning : Mutual fund savings in Sweden has during the last 40 years gone from close to nil to represent a large portion of the private and public savings within the country. However, in recent years, the occurrence of closet indexing has been brought to light by researchers and media. LÄS MER

  3. 2. Improving image quality of a streak camera using periodic shadowing

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :David-Gabriel Lange; [2021]
    Nyckelord :combustion physics; laser; lock-in amplification; laser induced fluorescence; periodic shadowing; Rhodamine B; streak camera; Mode-locking; microfluidics; fluorescence lifetime imaging; Physics and Astronomy;

    Sammanfattning : Stray light suppression using a method inspired by lock-in amplification, called periodic shadowing, is examined and demonstrated for a measurement involving a streak camera. The experiment consists of resolving the fluorescent decay of the dye Rhodamine B (RhB) and examining both the rise and the decay of the fluorescence. LÄS MER

  4. 3. Development of Spectroscopic Measurements for Raman and Thomson Scattering Diagnostics ——Applications in Combustion and Plasma

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Miaoxin Gong; [2019]
    Nyckelord :Raman scattering; Raman spectroscopy; Thomson scattering; stray light suppression; periodic shadowing; high dynamic range imaging; digital micro-mirror device; DMD; laminar flames; combustion; gas discharge; plasma; laser diagnostics; spectrometer; improved spectroscopy; spectroscopy; Physics and Astronomy;

    Sammanfattning : This thesis work concerns methods for improved spectroscopy including stray-light suppression, dynamic range improvement and signal enhancement. These methods were applied in Raman and Thomson- scattering spectroscopy in combustion and plasma. LÄS MER

  5. 4. A Software Model for MATS Satellite Payload

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Tejaswi Seth; [2018]
    Nyckelord :Noctilucent clouds; swedish satellite; MATS; gravity waves; limb imaging; CCD;

    Sammanfattning : This thesis presents the development of a software model that simulates a payload instrument onboard the MATS satellite. The goal of this model is to provide an understanding of how the instrument impacts the measured data. LÄS MER

  7. 5. Fiber-based Stray Light Suppression in Spectrometers

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Miaoxin Gong; [2017]
    Nyckelord :spectroscopy; spectrometer; stray light; fiber optics; Periodic Shadowing; lock-in analysis; Raman spectroscopy; Physics and Astronomy;

    Sammanfattning : Stray light is known as strong interference in spectroscopic measurements. With the creation of a novel kind of customized fibers, manufactured by the fiber optics group in Jena, Germany, a general experimental solution to this problem is possible. LÄS MER