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Title:
Nuclear Fusion in Collapsing Bubbles—Is It There? An Attempt to Repeat the Observation of Nuclear Emissions from Sonoluminescence
Authors:
Shapira, D.; Saltmarsh, M.
Affiliation:
AA(Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee), AB(Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee)
Publication:
Physical Review Letters, vol. 89, Issue 10, id. 104302 (PhRvL Homepage)
Publication Date:
08/2002
Origin:
APS
PACS Keywords:
Sonoluminescence triboluminescence, 2H-induced reactions, Neutron physics, Fusion reactors
DOI:
10.1103/PhysRevLett.89.104302
Bibliographic Code:
2002PhRvL..89j4302S

Abstract

We have repeated the experiment of Taleyarkhan et al. [<article>Science<coden>SCIEAS</coden><issn>0036-8075</issn> 295, 1868 (2002)</article>] in an attempt to detect the emission of neutrons from d-d fusion during bubble collapse in deuterated acetone. Using the same cavitation apparatus, a more sophisticated data acquisition system, and a larger scintillator detector, we find no evidence for 2.5-MeV neutron emission correlated with sonoluminescence form collapsing bubbles. Any neutron emission that might occur is at least 4 orders of magnitude too small to explain the tritium production reported in Taleyarkhan et al. as being due to d-d fusion. We show that proper allowance for random coincidence rates in such experiments requires the simultaneous measurement of the count rates in the individual detectors.
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Database: Astronomy
Physics
arXiv e-prints