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Testing Thermo-acoustic Sound Generation in Water with Proton and Laser Beams | | K. Graf
; G. Anton
; J. Hoessl
; A. Kappes
; T. Karg
; U. Katz
; R. Lahmann
; C. Naumann
; K. Salomon
; C. Stegmann
; | | Date: |
15 Sep 2005 | | Subject: | astro-ph | | Abstract: | Experiments were performed at a proton accelerator and an infrared laser acility to investigate the sound generation caused by the energy deposition of pulsed particle and laser beams in water. The beams with an energy range of 1 PeV to 400 PeV per proton beam spill and up to 10 EeV for the laser pulse were dumped into a water volume and the resulting acoustic signals were recorded with pressure sensitive sensors. Measurements were performed at varying pulse energies, sensor positions, beam diameters and temperatures. The data is well described by simulations based on the thermo-acoustic model. This implies that the primary mechanism for sound generation by the energy deposition of particles propagating in water is the local heating of the media giving rise to an expansion or contraction of the medium resulting in a pressure pulse with bipolar shape. A possible application of this effect would be the acoustical detection of neutrinos with energies greater than 1 EeV. | | Source: | arXiv, astro-ph/0509450 | | Services: | Forum | Review | PDF | Favorites | |
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