Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2005-05-02
Astropart.Phys.24:65-74,2005
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
RAP experiment, 16 pages, 7 figures
Scientific paper
10.1016/j.astropartphys.2005.05.
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 about 10% with the predictions of the model describing the underlying physical process.
Buonomo B.
Coccia Eugenio
D'Antonio Sabrina
Di Gioacchino D.
Fafone Viviana
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