Sökning: "praseodymium"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet praseodymium.

  1. 1. Advances in Stellar Astrophysics from Laboratory Spectroscopy

    Författare :Stefan Ivarsson; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; iridium; osmium; uranium; oscillator strengths; Spectroscopy; term analysis; line profiles; line structure; astrophysics; Sun; Chi Lupi; 17 Comae A; chemically peculiar; praseodymium; stars; space research; cosmic chemistry; Astronomi; rymdvetenskap; kosmisk kemi; Fysicumarkivet A:2004:Ivarsson;

    Sammanfattning : Investigation of astrophysical plasmas, such as stellar atmospheres, require both knowledge of atomic structure and data. We present laboratory instruments, techniques and tools for acquisition of the data required to derive important atomic parameters such as, wavelengths, oscillator strengths and line profiles. LÄS MER

  3. 2. A spectroscopic study of the rare earth element praseodymium

    Författare :Stefan Ivarsson; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Not available.... LÄS MER

  4. 3. A Study of some Neutron-rich Isotopes of Lanthanum, Cerium and Praseodymium by Means of the Fast Chemical On-line Separation Technique SISAK

    Författare :Gunnar Skarnemark; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 4. Physics of Strong Correlations in Electronic Structure and Model Calculations

    Författare :Urban Lundin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Strongly correlated electrons; Electronic structure calculations; Fysik; Physics; Fysik; fysik; Physics;

    Sammanfattning : Using field theoretical methods models of strongly correlated electrons have been investigated. Application to electronic structure calculations has been made. LÄS MER

  7. 5. Light-Matter Interaction and Quantum Computing in Rare-Earth-Ion-Doped Crystals

    Författare :Adam Kinos; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Rare-Earth-Ion-Doped Crystals; Quantum Computing; Light-Matter Interaction; Fysicumarkivet A:2018:Kinos;

    Sammanfattning : In this thesis, crystals of yttrium orthosilicate (Y2SiO5) that are randomly doped with another rare-earth element, such as praseodymium (Pr), europium (Eu), or cerium (Ce), are investigated with lasers locked to ultra-stable cavities using the Pound-Drever-Hall locking technique. Many of these rare-earth elements have long-lived 4f-4f transitions, hundreds of microseconds to a few milliseconds, with even longer ground hyperfine lifetimes of up to several days. LÄS MER