Sökning: "MCNPX"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet MCNPX.

  1. 1. 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

  3. 2. Benchmark of simulation of an ion guide for neutron-induced fission products

    Författare :Zhihao Gao; Andreas Solders; Johan Nyberg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fission products; simulation; Geant4; GEF; MCNPX; neutron flux; gamma spectroscopy;

    Sammanfattning : Independent yield distributions of high-energy neutron-induced fission are of importance to achieve a good understanding of fission. Even though the mass and charge yield distributions of thermal neutron-induced fission are well known, there are few experimental data for high-energy neutron-induced fission. LÄS MER

  4. 3. Towards a Flexible Monte Carlo Calibration of a Whole Body Counter Spectrometer System - Highlighting the Need of Increased Model Complexity for Large Plastic Scintillators

    Författare :Jenny Nilsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Whole body counters, WBC, can be used for fast and accurate screening and follow-ups in the case of an emergency situation involving ionizing radiation given that the WBC calibration method is fast and versatile. A Monte Carlo model of a WBC system could meet these requirements under the condition that the model is an accurate description of the WBC system. LÄS MER

  5. 4. Modeling of radiative processes in organic scintillators

    Författare :Jenny Nilsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis presents the development of a Monte Carlo calibration of a whole body counter (WBC), consisting of four large plastic (organic) scintillators, used for determine the body burden of gamma-emitting radionuclides. A scintillator emits optical photons after energy has been deposited by an ionizing particle in the scintillator material. LÄS MER

  7. 5. Neutron emission spectroscopy of fusion plasmas with a NE213 liquid scintillator at JET

    Författare :Federico Binda; Göran Ericsson; Chernikova Dina; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NE213; neutron spectroscopy; liquid scintillator; nuclear; fusion; plasma;

    Sammanfattning : Neutron diagnostics will play a fundamental role in future fusion plasma machines,where the harsh environment will make the use of many other type of diagnos-tics practically impossible. Complex techniques to measure the neutron spectrumemitted from tokamk plasmas have been developed over the years, producing stateof the art neutron spectrometers. LÄS MER