Detector response to swift heavy ions

Microstructural changes of graphite irradiated with swift heavy ions

Several methods, such as electron microscopy, scanning tunnelling microscopy (STM), X-ray diffraction, and decoration technique can be used to observe radiation damage in materials. In this work, we report microstructural changes and defect clusters induced by swift heavy ions (SHI) on graphite surfaces, visualized by scanning electron microscopy (SEM). Our studies have been performed on fine-g...

Degradation of polyimide under the irradiation with swift heavy ions

This study concentrates on radiation-induced ageing effects of polymers planned as insulating materials in the rapidly cycling superconducting magnets presently being developed for the FAIR facility. Although beam control and minimization of beam losses will be a major issue, the exposure of insulating parts (e.g. polyimide, polyetherimide, and glassenforced epoxy-compounds) of various accelera...

Fission Tracks Simulated by Swift Heavy Ions at Crustal Temperatures and Pressures

The fission-track dating technique is an important tool to constrain the history of samples from small archaeological specimens to large geological formations. The method is based on analyzing particle tracks produced by spontaneous fission of 238 U nuclei and accumulated over time. In laboratory experiments, fission tracks can be simulated by performing irradiations with energetic heavy ions p...

Defects creation in sapphire by swift heavy ions: a fluence depending process

Model for nucleation of dislocation loops in graphite under irradiation with swift heavy ions

Irradiation of highly oriented pyrolytic graphite (HOPG) with swift heavy ions demonstrated that damage of the material is originated by electronic energy loss [1]. To support further analysis of experimental data from Raman spectroscopy, electron microscopy, X-ray scattering, etc., some assumptions about damage structure are necessary. It is reasonable to assume that not only primary Frenkel d...