Isopin Effects in Pionic Bremsstrahlung Emitted from Tin-Isotopes

摘要

In heavy ion collisions one observes the production of pions far below the free nucleon-nucleon threshold. One model to explain that cooperative production mechanism is the bremsstrahlung model. In the context of that model we discuss whether the pion yield will significantly be influenced if one changes from tin targets with small neutron numbers to neutron rich tin targets. Based on our model of statistical isospin fluctuations we find out that - depending on geometrical assumptions - the effect can provide a significant enhancement of the pion yield up to 50%. (ERA citation 10:045683)