Correlation between local magnetic and structural properties at the Ni/Pd interface

High-energetic protons produce a multitude of short-lived radioactive produ cts in nuclear spallation reactions. The on-line mass separator ISOLDE/CERN is designed to produce radioactive beams extracted from thick targets hit by 1 GeV protons from the PS-Booster accelerator. After ionization, the pro ducts or their radioactive daughters are extracted by high voltage, mass se parated, and thus transformed into specific ion beams. By this procedure a variety of suitable probe nuclei is obtained (out of a total of 600 differe nt isotopes) for the use in solid state physics involving nuclear methods s uch as perturbed angular correlation (PAC). The UHV chamber ASPIC (Apparatu s for Surface Physics and Interfaces at CERN) at the UHV beamline of ISOLDE serves for an extremely clean deposition of these mass-separated probe ato ms on precleaned surfaces. Here we report on magnetic hyperfine interaction s observed with Cd-111m/Cd-111 probe atoms positioned at the interface of N i/Pd. (C) 1998 Elsevier Science B.V. All rights reserved.