Sökning: "experimental atomic physics"

Visar resultat 1 - 5 av 242 avhandlingar innehållade orden experimental atomic physics.

  1. 1. Experimental studies of particle production in ultra-relativistic heavy ion collisions

    Författare :Pål Nilsson; Partikel- och kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pad chambers; PHENIX; WA98; phi-meson; tracking; single particle spectra; heavy-ion collisions; inverse slope parameters; particle production; RHIC; charged particle multiplicity; pad readout; SPS; Physics; Fysik; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:2001:Nilsson;

    Sammanfattning : This thesis is about high energy heavy ion physics. Two major experiments, the WA98 at CERN and the PHENIX at Brookhaven National Laboratory, are described. Results from data analysis from both experiments are presented. The WA98 chapter presents particle identification methods and phi-meson measurements. LÄS MER

  2. 2. Weak Atomic Interactions

    Författare :Peter Schef; Sven Mannervik; Juliet C. Pickering; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metastable states; forbidden transitions; laser probing; hyperfine structure; LRDR; Atomic physics; Atomfysik;

    Sammanfattning : An atom or ion can change quantum state, usually through emission or absorption of a photon. The photon has the same energy as the energy difference between the states of the transition. The states, or energy levels, of an atom are quantized and light emitted, or absorbed, from the atom is therefore of specific wavelengths, giving spectral lines. LÄS MER

  3. 3. A single trapped Rydberg ion

    Författare :Gerard Higgins; Markus Hennrich; Tilman Pfau; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Trapped ions; Rydberg physics; quantum information platforms; atomic physics; fysik; Physics;

    Sammanfattning : Systems of trapped ions and systems of ultracold Rydberg atoms are used at the forefront of quantum physics research and they make strong contenders as platforms for quantum technologies. Trapped Rydberg ions are a new hybrid technology envisaged to have both the exquisite control of trapped ion systems and the strong interactions of Rydberg atoms. LÄS MER

  4. 4. The Penning trap mass spectrometer SMILETRAP II and evaporative cooling of highly-charged ions

    Författare :Matthias Hobein; Reinhold Schuch; David Lunney; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Penning trap; Precision mass spectrometry; Atomic mass; Highly-charged ions; Evaporative cooling; Coherent oscillation; Ion beam emittance; Atomic physics; Atomfysik; fysik; Physics;

    Sammanfattning : Accurate mass values have wide-ranging applications in physics and metrology, allowing, for example, to test quantum electrodynamics and fundamental symmetries, to determine fundamental constants, and to establish weight standards. This thesis describes the new high-precision double-Penning trap mass spectrometer SMILETRAP II which aims at relative uncertainties in the mass determination of 10-10 and below. LÄS MER

  5. 5. Experimental Studies in Chemical Physics

    Författare :Lars Karlsson; Michel Herman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; fysik;

    Sammanfattning : Different laser based methods have been applied for studying different aspects on chemical physics.The transition metal containing molecules vanadium oxide (VO), zirconium sulphide (ZrS), zirconium dimer (Zr2) and titanium dimer (Ti2) have been studied in cool molecular beams using two-photon ionization technique. LÄS MER