Conveners
Physics 4
- Mark Huyse (Leuven)
Dr
Herbert Wolf
(Technische Physik, Universitaet des Saarlandes, D-66041 Sasarbruecken, Germany)
14/02/2007, 14:15
Understanding and control of diffusion profiles of intrinsic and extrinsic defects in
semiconductors is of central importance for developing electronic and optoelectronic
devices.
Usually, diffusion profiles in all materials are characterized by a depth profile
decreasing monotonously from the source of the diffusing species. In some compound
semiconductors for certain dopant atoms,...
Wolf-Dietrich Zeitz
(Hahn-Meitner-Institut)
14/02/2007, 14:40
By elaborate preparation techniques radioactive cadmium and selenium probes
are positioned at different sites at surfaces of ferromagnets and in interfaces.
Magnetic and quadrupolar hyperfine interactions are measured by angular
correlation spectroscopy. At the nickel surface, the measured magnetic fields
correlate with the number of neighbouring host atoms. Band structure...
Thomas James Morgan
(Ludwig Maximilians University)
14/02/2007, 15:00
While so far spectroscopic studies of fission isomers concentrated on
even-even nuclei, high-resolution spectroscopy of odd-N fission isomers
will allow to identify Nilsson orbitals in heavy actinide nuclei.
As the first case ever studied for odd-N nuclei, the fission isomer in
237Pu (t1/2 = 110ns/1.1 ?s) was investigated using the 235U(alpha,2n)
reaction with a pulsed alpha beam...
Dr
Emmanuel Clement
(European Organization for Nuclear Research (CERN))
14/02/2007, 15:20
The study of the shape coexistence in exotic nuclei provide important benchmarks for
modern nuclear theories. Shape-coexisting states in neutron-deficient krypton
isotopes have been studied by low-energy multi-step Coulomb excitation of radioactive
74Kr and 76Kr beams at GANIL. Thanks to a large statistic, both transitional and
diagonal matrix elements were extracted up to high spins...
