Sökning: "cross section measurement"

Visar resultat 1 - 5 av 97 avhandlingar innehållade orden cross section measurement.

1. 1. 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

3. 2. Λ-Λ hyperons: the road to estimate the production cross-section in protonproton collisions

   Författare :Gandharva Appagere; Maria Doncel Monasterio; Per-Erik Tegnér; Michael Papenbrock; Andreas Heinz; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hyperons; multi-strangeness; neutron-stars; cross-section; Lambda-lambda; Physics; fysik;

   Sammanfattning : In this study, we analyse the $\Lambda$-$\Lambda$ hyperon channel in proton-proton scattering, $pp \mapsto \Lambda\Lambda + K^+K^+, \,\,\Lambda\mapsto p+\pi^-$, with a proton beam energy of $4.5$ GeV using the High Acceptance Di-Electron Spectrometer (HADES) at GSI. LÄS MER

4. 3. Studies of Accelerator-Driven Systems for Transmutation of Nuclear Waste

   Författare :Marcus Dahlfors; Ane Håkansson; Alfred Hogenbirk; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; transmutation; accelerator-driven systems; Energy Amplifier; subcritical reactors; nuclear waste; Monte Carlo simulation; burnup; actinides; fission products; benchmark; nuclear data; neutron cross sections; sensitivity analysis; neutron source; spallation target; n_TOF experiment; neutron time-of-flight; cross section measurement; FLUKA; EA-MC; MCNP; MCNP-X; EADF; TRADE; Kärnfysik; Nuclear physics; Kärnfysik;

   Sammanfattning : Accelerator-driven systems for transmutation of nuclear waste have been suggested as a means for dealing with spent fuel components that pose potential radiological hazard for long periods of time. While not entirely removing the need for underground waste repositories, this nuclear waste incineration technology provides a viable method for reducing both waste volumes and storage times. LÄS MER

5. 4. Measurements of Neutron-induced Nuclear Reactions for More Precise Standard Cross Sections and Correlated Fission Properties

   Författare :Kaj Jansson; Cecilia Gustavsson; Stephan Pomp; Alexander Prokofiev; Ali Al-Adili; Fanny Farget; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cross Section; Fission; Neutron-induced reactions; Simulation; VERDI; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

   Sammanfattning : It is difficult to underestimate the importance of neutron cross section standards in the nuclear data field. Accurate and precise standards are prerequisites for measuring neutron cross sections. Two different projects are presented here with the aim of improving on neutron standards. LÄS MER

7. 5. 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