Thermo-acoustic sound generation in the interaction of pulsed proton and laser beams with a water target
Lahmann R, Anton G, Graf K, Hossl J, Kappes A, Katz U, Mecke K, Schwemmer S (2015)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2015
Journal
Publisher: Elsevier
Book Volume: 65
Pages Range: 69-79
DOI: 10.1016/j.astropartphys.2014.12.003
Abstract
The generation of hydrodynamic radiation in interactions of pulsed proton and laser beams with matter is explored. The beams were directed into a water target and the resulting acoustic signals were recorded with pressure sensitive sensors. Measurements were performed with varying pulse energies, sensor positions, beam diameters and temperatures. The obtained data are matched by simulation results based on the thermo-acoustic model with uncertainties at a level of 10%. The results imply that the primary mechanism for sound generation by the energy deposition of particles propagating in water is the local heating of the medium. The heating results in a fast expansion or contraction and a pressure pulse of bipolar shape is emitted into the surrounding medium. An interesting, widely discussed application of this effect could be the detection of ultra-high energetic cosmic neutrinos in future large-scale acoustic neutrino detectors. For this application a validation of the sound generation mechanism to high accuracy, as achieved with the experiments discussed in this article, is of high importance.
Authors with CRIS profile
Robert Lahmann
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Gisela Anton
Lehrstuhl für Experimentelle Astroteilchenphysik
Kay Graf
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Alexander Kappes
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Ulrich Katz
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Klaus Mecke
Lehrstuhl für Theoretische Physik
Involved external institutions
Germany (DE)How to cite
APA:
Lahmann, R., Anton, G., Graf, K., Hossl, J., Kappes, A., Katz, U.,... Schwemmer, S. (2015). Thermo-acoustic sound generation in the interaction of pulsed proton and laser beams with a water target. Astroparticle Physics, 65, 69-79. https://dx.doi.org/10.1016/j.astropartphys.2014.12.003
MLA:
Lahmann, Robert, et al. "Thermo-acoustic sound generation in the interaction of pulsed proton and laser beams with a water target." Astroparticle Physics 65 (2015): 69-79.
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