Soliton Models for the Nucleon and Predictions for the Nucleon Spin Structure ∗)
In these lectures the three flavor soliton approach for baryons is reviewed. Effects of flavor symmetry breaking in the baryon wave--functions on axial current matrix elements are discussed. A bosonized chiral quark model is considered to outline the computation of spin dependent nucleon structure functions in the soliton picture.
Abstract In order to study the size distribution of a radioactivity due to radon daughters in the environmental atmosphere, an experimental procedure using filters, ion tubes, diffusion batteries and cascade impactors (CASELLA MK2 and ANDERSEN) is presented. A comparison between the experimental results and a theoretical curve, deduced of the attachment theory of the small radioactive ions on atmospheric particles, is carried out.