Sökning: "Frequency Domain Spectroscopy"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Frequency Domain Spectroscopy.

  1. 1. Konditionsbedömning av en grupp transformatorer på Forsmark kärnkraftverk : Modellbaserad åldringsanalys av transformatorer

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Samuel Sjöqvist; [2023]
    Nyckelord :Transformator; elkraft; energisystem; kärnkraft; åldrandehantering;

    Sammanfattning : This thesis used a model-based approach to assess the condition of a group of transformers at Forsmark nuclear plant. Since it’s problematic for practical and economic reasons to examine the paper insulation by inspection, this approach was chosen. LÄS MER

  3. 2. Dielectric properties of ion-exchanged electrotechnical insulation papers : A study on the properties of novel papers

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

    Författare :Dan Selsmark; [2023]
    Nyckelord :Paper insulation; Frequency Domain Spectroscopy; Dielectric response; Karl Fischer titration; Dielectrics; Pappersisolering; Frekvensdomänsspektroskopi; Dielektrisk respons; Karl Fischer titrering; Dielektrika;

    Sammanfattning : Electrical insulation papers are a widely used group of papers in insulation applications and has been used for more than 100 years. Common applications include use as the dielectric medium in capacitors and insulation material in cables, bushings and transformers. LÄS MER

  4. 3. Prototype Instrumentation for Frequency Domain – Functional Near Infrared Spectroscopy

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Rohit Rathnam Nareshkumar; [2022]
    Nyckelord :Neurofeedback; Frequency domain fNIRS; vertical-cavity surface-emitting laser; silicon photomultiplier;

    Sammanfattning : Frequency domain functional near infrared spectroscopy (FD-fNIRS) is a tissue optical measurement technique used to measure absolute haemoglobin concentrations in brain tissue. This work is intended to be the first step in the development of a wearable, low-cost FD-fNIRS device for neurofeedback applications. LÄS MER

  5. 4. Temporal Characterization and Intensity Contrast Improvement of Few-cycle Laser Pulses

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Xiaoying Zhang; [2019]
    Nyckelord :;

    Sammanfattning : Due to the unique combination of properties of high intensity and few optical cycle pulse duration, the ultrashort laser pulses have widespread applications in pump-probe spectroscopy and laser-plasma interaction. Correspondingly, it is critical to precisely measure the electric field in the temporal or spectral domain. LÄS MER

  7. 5. Photoionization study using few attosecond pulses and coincidence imaging techniques

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

    Författare :Lisa Rämisch; [2019]
    Nyckelord :Laser spectroscopy; Attosecond Science; Electron Spectroscopy; Physics and Astronomy;

    Sammanfattning : Photoionization is one of the most fundamental photoreactions that leads to the ejection of an electron and the formation of an ion. With the help of modern 3D momentum imaging spectrometers, the interplay between the time and frequency domain upon ionization is studied. LÄS MER