Sökning: "3He"

Visar resultat 1 - 5 av 26 avhandlingar innehållade ordet 3He.

  1. 1. Investigations of Reaction Cross Sections for Protons and 3He

    Författare :Mattias Lantz; Anders Ingemarsson; Livius Trache; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; reaction cross section; protons; 3He; experimental method; transmission method; optical model; parametrization; matter distributions; Kärnfysik; Nuclear physics; Kärnfysik;

    Sammanfattning : The reaction cross section gives the probability that a particle will undergo a nonelastic process when passing through a nuclear medium. Therefore reaction cross section data are of importance both for theoretical studies and for applications in such diverse fields as medicine, biology, astrophysics and accelerator-driven transmutation of nuclear waste. LÄS MER

  3. 2. Reaction Cross Section Measurements for p,d,3He and 4He at Intermediate Energies

    Författare :Agris Auce; Bo Höistad; Anders Ingemarsson; Florin Carstoiu; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Reaction cross section; proton; deuteron; 3He; alpha particle; measurement; intermediate energy; Kärnfysik; Nuclear physics; Kärnfysik;

    Sammanfattning : Reaction cross sections were measured for protons at 65.5 MeV, for deuterons at 37.8, 65.5, 97. LÄS MER

  4. 3. Elementary excitations in liquid 3He and 3He/4He mixtures

    Författare :Björn Fåk; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  5. 4. Hyperpolarized Nuclei for NMR Imaging and Spectroscopy – Methodology and model studies of lung and vascular function

    Författare :Sven Månsson; Malmö Medicinsk strålningsfysik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lung function; 3He; 13C; 129Xe; Elektroteknik; Electrical engineering; Magnetic resonance; hyperpolarized;

    Sammanfattning : Based on the principle of nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) are widely used methods in medical diagnostic imaging and biological research. Clinical MRI has been restricted to imaging of protons, for reasons of sensitivity. LÄS MER

  7. 5. Experimental Studies of Delta Excitations in Nuclei Using the (d,2He) and (3He,t) Reactions

    Författare :Michael Österlund; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; d; 2He and 3He; t reactions; delta exitation; tensor polarisation; spin response; delta decay; coherent pion production; Kärnfysik; Nuclear physics; Kärnfysik; Applied Nuclear Physics; tillämpad kärnfysik;

    Sammanfattning : .... LÄS MER