Abstract
Emission sources in protonnucleus and nucleusnucleus collisions at intermediate energies have been studied.
Pion excitation functions from the absolute threshold to 500 MeV have been measured with an ion beam of continuously varying energy with an energy resolution of 1 MeV. Total yields, angular distributions and target mass dependences are compared to QMD and BUU calculations.
Proton/deuteron/triton ratios have been measured in p + Kr, 16O + Kr and 20Ne + Ar reactions with a continuously varying beam energy up to 500 AMeV. Experimental ratios are compared to calculations from statistical models as well as dynamical models. Statistical models fail to reproduce the experimental data, whereas the dynamical models are only able to reproduce the experimental if a finalstate interaction is introduced via the coalescence prescription. It is also shown that entropy cannot be directly dtermined from these ratios.
Correlation functions for two neutron, two proton and neutronproton pairs as well as singles measuremnts have been measured simultaneously in the E/A = 45 MeV 58Ni27Al reaction, and are compared to calculations from a statistical model.
Pion excitation functions from the absolute threshold to 500 MeV have been measured with an ion beam of continuously varying energy with an energy resolution of 1 MeV. Total yields, angular distributions and target mass dependences are compared to QMD and BUU calculations.
Proton/deuteron/triton ratios have been measured in p + Kr, 16O + Kr and 20Ne + Ar reactions with a continuously varying beam energy up to 500 AMeV. Experimental ratios are compared to calculations from statistical models as well as dynamical models. Statistical models fail to reproduce the experimental data, whereas the dynamical models are only able to reproduce the experimental if a finalstate interaction is introduced via the coalescence prescription. It is also shown that entropy cannot be directly dtermined from these ratios.
Correlation functions for two neutron, two proton and neutronproton pairs as well as singles measuremnts have been measured simultaneously in the E/A = 45 MeV 58Ni27Al reaction, and are compared to calculations from a statistical model.
Original language  English 

Qualification  Doctor 
Awarding Institution 

Supervisors/Advisors 

Award date  2000 Nov 17 
Publisher  
ISBN (Print)  9162844733 
Publication status  Published  2000 
Bibliographical note
Defence detailsDate: 20001117
Time: 13:15
Place: Lecture Hall A of the Department of Physics
External reviewer(s)
Name: Gaardhöje, Jens Jörgen
Title: [unknown]
Affiliation: Köpenhamn

Subject classification (UKÄ)
 Subatomic Physics
Free keywords
 High energy interactions
 Fysik
 Physics
 correlation function.
 fermion interferometry
 t/p and d/p ratios
 target mass dependence
 pion angular distribution
 pion excitation function
 Heavy ion reactions
 intermediate energy
 cosmic rays
 Kosmisk strålning
 högenergi