The properties of excited nuclear states are of importance for scientific and practical applications. No systematic compilation of such data has been performed so far. The present compilation has been prepared by eminent experts in the field. One of the characteristics of Landolt-Börnstein is that data are evaluated before they are accepted for compilation. The idea is to present 'best values' which can be used with confidence by non-experts.

The present Volume I/25C is providing new data (energy levels, branching ratios, cross-sections, spectroscopic factors, etc.) for nuclei with atomic numbers Z ranging from 48 (Cd) to 60 (Nd)published in 2005-2011, thus supplementing previous compilations. Additionally, sections of the Introduction are devoted to spectroscopic information from ?-? coincidences following the (n,?) reaction.

In view of the large amount of data available some of the information is given online only at www.springermaterials.com.