Sökning: "NATURVETENSKAP Fysik Kärnfysik"
Visar resultat 16 - 20 av 310 avhandlingar innehållade orden NATURVETENSKAP Fysik Kärnfysik.
16. Reactivity Assessment in Subcritical Systems
Sammanfattning : Accelerator-driven systems have been proposed for incineration of transuranic elements from spent nuclear fuel. For safe operation of such facilities, a robust method for reactivity monitoring is required. LÄS MER
17. In-Beam Spectroscopy of the Extremely Neutron Deficient Nuclei 169Ir and 110Xe
Sammanfattning : This thesis describes new results obtained from experimental studies of the extremely neutron-deficient isotopes 169Ir and 110Xe, close to the proton drip-line. The experiments use state-of-the-art equipment for nuclear spectroscopy where a large high-resolution Germanium-detector array is coupled to a high-transmission recoil separator and using the highly selective recoil-decay tagging technique. LÄS MER
18. Analysis of the Unbound Spectra of 12Li and 13Li
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
19. Studies of Tropospheric and Stratospheric Aerosol using Ion Beam Analysis
Sammanfattning : Atmospheric aerosol particles are believed to have an impact on the radiative forcing of the earth's surface. The predicted results indicate a net cooling effect on the global climate, however there are few studies available to substantiate this and experimental data are needed. LÄS MER
20. Studies of the Decay η→π+π-π0 with WASA-at-COSY
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
