Table of contents

A review is given of the present situation of electric giant resonances in nuclei. Starting with the properties of the well-known electric dipole resonances the authors summarise the known experimental facts on resonances with other angular momenta and parities. They mainly discuss the giant quadrupole and giant monopole resonances which are known best. The difficulties connected with the extraction of nuclear structure information from the experimental cross sections are discussed in detail. They also review the theoretical developments in this field and emphasise especially microscopic models and the corresponding results. As far as possible the experimental facts are compared with the theoretical results.

Reviews the vibronic properties of point defects (i.e. impurities and radiation-induced defects) in diamond. Cases discussed are: defects where the totally symmetric electron-lattice interaction dominates; cases of dynamic Jahn-Teller distortions; vibronic interactions between nearly degenerate states and a statically deformed defect. Before discussing each of these topics the relevant theory is outlined at an introductory level with the emphasis on features relevant to understanding data. It is shown that a good understanding of the vibronic data is now available in diamond. Compared to defects in silicon, defects in diamond are less prone to static deformations, partly as a result of the high-energy transverse acoustic modes in diamond.