ISOLDE Workshop and Users meeting 2006/2007

Session

Student Session (mixed)

13 Feb 2007, 16:25

Council Chamber, 503/1-001 (CERN)

Conveners

Student Session (mixed)

• Mats Lindroos (CERN)

36. Production of short lived carbon and nitrogen isotopes

Hanna Franberg (CERN)

13/02/2007, 16:25

Within the EU-RTD project TARGISOL the most suitable materials for the target and ion source unit at ISOL (Isotope Separation On-Line) facilities for the production of beams of short-lived radioactive carbon isotopes with half-lives of minutes down to milliseconds have been investigated. On-line and off-line experiments have been performed at ISOLDE, Paul Scherrer Institute (Villigen,...

17. Local Ordering of Oxygen in High-Tc Superconductors

Tania Melo Mendonca (Departamento de Física, Instituto Tecnológico e Nuclear, ITN, E.N. 10, 2686-953 Sacavém, Portugal)

13/02/2007, 16:45

Lattice sites and collective ordering of highly oxygen doped samples of HgBa2Can-1CunO2n+2+δ (n=2, 3, Hg-1212 and Hg-1223) were investigated using the Perturbed Angular Correlation (PAC) technique by measuring the electric field gradients at 199mHg nuclei. The experiments in these compounds were performed at different annealing conditions, under Ar flow or O2 pressure up to 152 bars....

13. Charge breeding ions for nuclear physics with the Phoenix Booster ECRIS

Ms Melanie Marie-Jeanne (Universite Joseph Fourier de Grenoble)

13/02/2007, 17:05

At ISOLDE, CERN, an online test bench is dedicated to charge breeding experiments with the Daresbury Phoenix booster ECR ion source. The investigation of the 1+ --> n+ scenario for next generation ISOL post- accelerators is ongoing for one more year, with charge breeding of stable and radioactive elements. Many technical developments have been undertaken to improve the flexibility of...

22. Investigations on Isolated Eu Atoms in ZnO and on Pd Surfaces

Przemyslaw Imielski (Freie Universität Berlin)

13/02/2007, 17:25

The valences of isolated Eu impurities at Pd surfaces and in ZnO semiconductor crystals are intended to be determined from the oscillation patterns of the perturbed angular correlation technique. After the production and the implantation of appropiate precursor isotopes, the 11/2-isomeric levels in Eu- 149 and Eu-147 have been utilized. After annealing procedures, first successful...

18. LOCAL PROBING OF ELECTRIC AND MAGNETIC ORDER COEXISTENCE IN MANGANITE SYSTEMS

A.M. Lima Lopes (Dep. Física and CICECO, University of Aveiro)

13/02/2007, 17:45

The Mn3+/Mn4+ mixed valence manganite systems have very rich phase diagrams [1] exhibiting charge, orbital, magnetic and dielectric competing orders depending on doping, magnetic and electric applied fields, temperature and pressure. The recent interest in multiferroic materials, displaying coexistence of ferroelectricity and magnetic order has triggered further research in...