GSI Scientific Report 2009 [GSI Report 2010-1]

Displacement design response spectrum is an essential component for the currently-developing displacement-based seismic design and assessment procedures. This paper proposes a new and simple method for constructing displacement design response spectra on soft soil sites. The method takes into account modifications of the seismic waves by the soil layers, giving due considerations to factors such as the level of bedrock shaking, material non-linearity, seismic impedance contrast at the interface between soil and bedrock, and plasticity of the soil layers. The model is particularly suited to applications in regions with a paucity of recorded strong ground motion data, from which empirical models cannot be reliably developed

Personen- und Vorlesungsverzeichnis : Wintersemester 2001/2002

Retrodigitalisierte Vorlesungsverzeichnisse der Johannes-Gutenberg-Universität. Teilweise auch enthaltend: - Vorlesungsverzeichnis - Personenverzeichnis - Studienverzeichnis - Personalverzeichni

Excitation and decay of two-phonon giant dipole resonances

In heavy ion collisions at near relativistic energies, electromagnetic excitation of the double giant dipole resonance occurs with large cross sections. We summarize the presently available experimental data and discuss related theoretical efforts. Emphasis is paid to the question of anharmonicities and to the damping of the two-phonon states. (orig.)Available from TIB Hannover: RO 801(98-60) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

A large area scintillating fiber detector for relativistic heavy ions

A scintillating fiber detector for relativistic heavy ions with an active area of 50 x 50 cm"2 has been developed and was tested with various ion beams (1#<=#Z#<=#92). A count rates of up to 10"5 particles/s, the position resolution was found to be determined by the fiber width of 1 mm; depending on the nuclear charge of the beam, efficiencies between 89% and 100% and time resolutions between 800 and 200 ps (FWHM) were obtained. (orig.)SIGLEAvailable from TIB Hannover: RO 801(97-60) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Electromagnetic excitation of the two-phonon giant dipole resonance

The nuclear response of "1"3"6Xe and "2"0"8Pb to electromagnetic excitation was studied in peripheral, near-relativistic heavy-ion collisions. Large cross sections were observed for the one-phonon and two-phonon isovector giant dipole resonance. The results, in particular the unexpectedly large strength found for the double giant dipole resonance, are discussed and compared to that of other recent measurements. (orig.)Available from TIB Hannover: RO 801(93-72) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman