Sökning: "neutron"

Visar resultat 11 - 15 av 595 avhandlingar innehållade ordet neutron.

  1. 11. Utilization of Low Voltage D-T Neutron Generators in Neutron Physics Studies

    Författare :Somsorn Singkarat; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; D-T neutron generator; double-differential cross-section DDX ; n-1H scattering; directional neutron detector; time-of-flight method; natural iron; scintillation fibers; neutron energy converter;

    Sammanfattning : In a small nuclear laboratory of a developing country a low voltage D-T neutron generator can be a very useful scientific apparatus. Such machines have been used successfully for more than 40 years in teaching and scientific research. LÄS MER

  3. 12. Developments and application of neutron noise diagnostics of sodium cooled fast reactors

    Författare :Florian Zylbersztejn; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Neutron monitoring; Neutron noise; Fast neutron reactors; Core volume fluctuations;

    Sammanfattning : The Sodium cooled Fast Reactor (SFR) is one of the six reactor types selected by the Generation-IV international forum (GIF), and the building of an industrial prototype is planned in France. The safety standard of the future SFR has to be equivalent to the EPR's. LÄS MER

  4. 13. MCNPX Simulations for Neutron Cross Section Measurements

    Författare :Milan Tesinsky; Janne Wallenius; Alan Tkaczyk; KTH; []
    Nyckelord :MCNPX; neutron; cross section;

    Sammanfattning : This thesis presents MCNPX simulations of the SCANDAL set-up used at the Theodor Svedberg Laboratory for neutron scattering cross-section measurements. The thesis describes processes and data important for the upcoming off-line data analysis. LÄS MER

  5. 14. Fast neutron dosimetry : a study of basic dosimetric properties of fast-neutrons for external beam radiotherapy and problems associated with corrections of measured charged particle cross-sections

    Författare :Jonas Söderberg; Lennart Lindborg; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Basic dosimetric properties of fast-neutron beams with energies ≤80 MeV were explored using Monte Carlo techniques. Elementary pencil-beam dose distributions taking into account transport of all relevant types of released charged particles (protons, deuterons, tritons, 3He and a particles) were calculated and used to derive several absorbed dose distributions. LÄS MER

  7. 15. Neutron Halo Nuclei

    Författare :Katarina Wilhelmsen Rolander; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In light nuclei close to the neutron drip-line a spatially extended neutron distribution, the neutron, halo occurs. This is due to the relatively small binding energy of the last neutrons which makes possible quantum mechanical tunnelling of the last neutron(s) far away from the nuclear core. LÄS MER