Author/Authors :
Buonomo، نويسنده , , B. and Coccia، نويسنده , , E. J. Antonio، نويسنده , , S. and Monache، نويسنده , , G. Delle and Gioacchino، نويسنده , , D. Di and Fafone، نويسنده , , V. and Ligi، نويسنده , , C. and Marini، نويسنده , , A. and Mazzitelli، نويسنده , , G. and Modestino، نويسنده , , G. and Panella، نويسنده , , S. and Pizzella، نويسنده , , G. and Quintieri، نويسنده , , L. and Roccella، نويسنده , , S. and Ronga، نويسنده , , F. and ، نويسنده ,
Abstract :
The results on cosmic rays detected by the gravitational antenna NAUTILUS have motivated an experiment (RAP) based on a suspended cylindrical bar, which is made of the same aluminum alloy as NAUTILUS and is exposed to a high energy electron beam. Mechanical vibrations originate from the local thermal expansion caused by warming up due to the energy lost by particles crossing the material. The aim of the experiment is to measure the amplitude of the fundamental longitudinal vibration at different temperatures. We report on the results obtained down to a temperature of about 4 K, which agree at the level of ∼10% with the predictions of the model describing the underlying physical process.
