Sökning: "Kärnfysik"

Visar resultat 6 - 10 av 341 avhandlingar innehållade ordet Kärnfysik.

1. 6. Double Pion Production in the dd to αππ reaction

   Författare :Samson Keleta; Pia Thörngren Engblom; Bo Höistad; Hans Ströher; Uppsala universitet; []
   Nyckelord :Nuclear physics; ABC effect; double pion; Kärnfysik; Nuclear Physics; kärnfysik;

   Sammanfattning : The reaction dd → 4Heππ has been measured exclusively for the first time. The measurements were performed at Td = 712 MeV and Td = 1029 MeV, with the WASA detector assembly at CELSIUS (Uppsala-Sweden). The aim was to investigate a long standing puzzle, the so called ABC effect. LÄS MER

3. 7. Analysis of the Unbound Spectra of 12Li and 13Li

   Författare :Zhenxiang Xu; Ramon Wyss; Osvaldo Civitatese; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik;

   Sammanfattning : The properties of unbound nuclei 12Li and 13Li are calculated within themultistep shell model in the complex energy plane by assuming that the spectraare determined by the motion of neutrons outside the 9Li core. It is foundthat in 12Li the ground state consists of an antibound 1/2+ state and thatonly this and a 1/2− and a 5/2+ excited states are physically meaningfulresonances. LÄS MER

4. 8. Studies of the Decay η→π+π-π0 with WASA-at-COSY

   Författare :Patrik Adlarson; Jozef Zlomanczuk; Bo Höistad; Fabio Bossi; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hadron physics; Chiral Perturbation Theory; Isospin violation; Quark masses; Symmetries; Advanced Instrumentation; Nuclear Physics; Kärnfysik;

   Sammanfattning : In 2008 a large statistics sample of approximately 1·107 η-decays has been collected with the WASA detector at COSY using the pd→3Heη reaction at the beam kinetic energy of 1 GeV. These data are being used to study the not so rare η decays involving charged pions, like η→π+π-π0. LÄS MER

5. 9. PWO Crystal Measurements and Simulation Studies of Anti-Hyperon Polarisation for PANDA

   Författare :Sophie Grape; Tord Johansson; Thomas Nilsson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PANDA; PWO; antiproton; hyperon; polarisation; Nuclear physics; Kärnfysik; Kärnfysik; Nuclear Physics;

   Sammanfattning : The Gesellschaft für Schwerionenforschung (GSI) facility in Darmstadt, Germany, will be upgraded to accommodate a new generation of physics experiments. The future accelerator facility will be called FAIR and one of the experimentsat the site will be PANDA, which aims at performing hadron physics investigations by colliding anti-protons with protons. LÄS MER

7. 10. Modeling of Electron Cooling : Theory, Data and Applications

   Författare :Karin Rathsman; Tord Johansson; Pia Thörngren; Dieter Prasuhn; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron cooling; Beam dynamics; Vlasov technique; Nonlinear damping; Monte Carlo simulations; Nuclear physics; Kärnfysik; Nuclear Physics; Kärnfysik;

   Sammanfattning : The Vlasov technique is used to model the electron cooling force. Limitations of the applicability of the method is obtained by considering the perturbations of the electron plasma. LÄS MER