ISOLDE Workshop and Users meeting 2006/2007

Session

Physics 4

14 Feb 2007, 14:15

Council Chamber, 503/1-001 (CERN)

Conveners

Physics 4

• Mark Huyse (Leuven)

33. Exotic diffusion phenomena in II-VI semiconductors

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,...

20. Electronic Configurations of sp-Element Atoms at Nickel Surfaces and Interfaces

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...

37. Gamma Spectroscopy of the superdeformed shape isomers in 237Pu

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...

14. Shape coexistence in exotic nuclei studied by low energy coulomb excitation

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...