L. Schnorrenberger

β-decay half-lives and β-delayed neutron emission probabilities of nuclei in the region A 110, relevant for the r process

Measurements of {beta}-decay properties of A < or approx. 110 r-process nuclei have been completed at the National Superconducting Cyclotron Laboratory at Michigan State University. {beta}-decay half-lives for {sup 105}Y, {sup 106,107}Zr, and {sup 111}Mo, along with {beta}-delayed neutron emission probabilities of {sup 104}Y, {sup 109,110}Mo and upper limits for {sup 105}Y, {sup 103-107}Zr, and {sup 108,111}Mo have been measured for the first time. Studies on the basis of the quasi-random-phase approximation are used to analyze the ground-state deformation of these nuclei.

Fragmentation and systematics of the pygmy dipole resonance in the stable N=82 isotones

The low-lying electric dipole (

β decay of nuclei around 90Se: Search for signatures of a N=56 subshell closure relevant to the r process

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Nuclear astrophysics with tagged photons: NEPTUN @ S–DALINAC, Darmstadt

) strength in the semimagic nucleus

Dipole response of the odd-proton nucleus 205Tl up to the neutron-separation energy

{}^{136}

Characterization of a CsI(Tl) array coupled to avalanche photodiodes for the Barrel of the CALIFA calorimeter at the NEPTUN tagged gamma beam facility

Xe has been measured, which finalizes the systematic survey to investigate the so-called pygmy dipole resonance (PDR) in all stable even

Beta-decay of nuclei around Se-90. Search for signatures of a N=56 sub-shell closure relevant the r-process

N=82

Nuclear Astrophysics with Tagged Photons

isotones with the method of nuclear resonance fluorescence using real photons in the entrance channel. In all cases, a fragmented resonance-like structure of

Activation Experiments for Nuclear Astrophysics

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Progress report of the CALIFA/

strength is observed in the energy region 5--8 MeV. An analysis of the fragmentation of the strength reveals that the degree of fragmentation decreases toward the proton-deficient isotones, while the total integrated strength increases, indicating a dependence of the total strength on the neutron-to-proton ratio. The experimental results are compared to microscopic calculations within the quasiparticle phonon model. The calculation includes complex configurations of up to three phonons and is able to reproduce also the fragmentation of the