Sökning: "high resolution laser spectroscopy"

Visar resultat 11 - 15 av 52 avhandlingar innehållade orden high resolution laser spectroscopy.

  1. 11. Environmental Monitoring - using diode-laser-based spectroscopic techniques

    Författare :Gabriel Somesfalean; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diode-laser spectroscopy; frequency-modulation spectroscopy; frequency conversion; diffraction; scattering; Electromagnetism; acoustics; akustik; optik; absorption spectroscopy; Elektromagnetism; optics; Fysicumarkivet A:2004:Somesfalean;

    Sammanfattning : Monitoring of environmental gases is necessary to understand the complex processes governing global warming and the impact of pollutant emissions related to human activity. Diode-laser-based spectroscopic techniques, being robust and affordable, have a great potential to become an industrially well-established technology for environmental sensing. LÄS MER

  3. 12. High-Sensitivity High-Resolution Diode Laser Spectroscopy in the Near-Infrared Region

    Författare :Viacheslav G. Avetisov; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:1996:Avetisov;

    Sammanfattning : High-resolution spectroscopy measurements have been performed using near-infrared diode lasers. Special emphasis was placed upon high accuracy absorption lineshape measurements, which provide the basis for quantitative gas analysis. For this purpose, relevant spectral characteristics of the radiation emitted by diode lasers were studied. LÄS MER

  4. 13. Time-Frequency Analysis in Attosecond Spectroscopy

    Författare :Marcus Isinger; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Attosecond; Spectroscopy; Time-Frequency; High-order harmonic generation; Rabitt; Interferometry;

    Sammanfattning : This thesis deals with ultrafast dynamics of electronic processes in rare gas atoms. The processes we explore include photoemission, where we time the emission of electrons moving away from the atomic core following ionization by a photon; and auto-ionization, where the atom spontaneously releases an electron wave-packet following photo-excitation. LÄS MER

  5. 14. Development and Application of Laser-Induced Emission Techniques for Combustion Diagnostics -High-Resolution Visualization of Turbulent Reacting Flows

    Författare :Bo Li; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PLIF; LIF; Laser-Induced Fluorescence; Rayleigh scattering; Laser Diagnostics; flame font; Combustion; Turbulence; Photofragmentation LIF; PF-LIF; Laser-induced Phosphorescence; LIP; Fysicumarkivet A:2012:Li;

    Sammanfattning : Nowadays, more than 90% of our energy comes from combustion processes. Hence, it is very important to perform combustion research to reduce emissions, improve efficiency, find clean and renewable fuels, strengthen safety, etc. LÄS MER

  7. 15. Hyperfine structure and hyperfine anomaly investigations

    Författare :Thomas Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nuclear moments; hyperfine structure; Radio-frequence spectroscopy; Bohr-Weisskopf effect; hyperfine anomaly; neutralizer for ions; diode laser; Ta; atomic beam; ABMR; magnetic fields; high resolution laser spectroscopy;

    Sammanfattning : .... LÄS MER