Thermo-elastic deformation of a titanium foil by ion irradiation

Experimental results were presented for elastic deformation of a titanium foil by MeV ion irradiation. In situ observations of the deformation have been performed by using a laser displacement meter. In order to study time-evolution of the deformation, the foils were irradiated with short-pulsed ion beams. We found that the deformation occurs by piling up of small deformation generated by one bunch of pulsed beams. We also investigated the magnitude of deformation as a function of beam flux. The result obtained was examined in terms of a model for strain due to beam heating.