New aspects of transient magnetic fields

Abstract

Strong attenuations of transient magnetic fields are observed in Fe and Gd host for Coulomb excited2HSi(21+)- and24Mg(21+)-ions in their single-electron charge state as well as for multi-electron62Ni(21+) ions. These effects are shown to be induced by the heavy ion beams used. The perturbations are found to be dynamic in nature and are attributed to a momentary loss of ferromagnetism of the host. This feature is also present in many earlier measurements using heavy ion beams but was not identified. The magnitude of the attenuations seems to be correlated with the energy loss of the beam ions in the ferromagnet.