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Direct observation of particles with energy >10 MeV/u from laser-induced processes with energy gain in ultra-dense deuterium

Published online by Cambridge University Press:  24 September 2013

Leif Holmlid
Leif Holmlid*
Affiliation:
Department of Chemistry and Molecular Biology, University of Gothenburg, Göteborg, Sweden
*
Address correspondence and reprint requests to: Leif Holmlid, Department of Chemistry and Molecular Biology, University of Gothenburg, SE-412 96 Göteborg, Sweden. E-mail [email protected]
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Abstract

Nuclear fusion in ultra-dense deuterium D(-1) was reported previously to be induced by 0.2 J pulses with 5 ns pulse length, ejecting particles with energies in the MeV range. The ns-resolved signal from D(-1) to two in-line collectors at up to 1 m distance can be observed directly on an oscilloscope, showing particles with energies in the range 1–20 MeV u−1. They are probably mainly protons and deuterons in the form of neutral ultra-dense hydrogen H(-1) fragments. Electrons and photons give only small contributions to the fast signal. The observed signal at several mA peak current corresponds to 1 × 1013 particles released per laser shot and to an energy release >4 J assuming isotropic formation and average particle energy of 3 MeV. This corresponds to an energy gain of 30 in the process. A movable slit close to the laser target gives lateral resolution of the signal generation, showing almost only fast particles from the point of laser impact and penetrating photons from the plasma outside the laser impact point. The observation of multi-MeV particles indicates nuclear fusion, either as a source or as a result.

Keywords

Laser-induced fusionMeV particlesUltra-dense deuterium
Type
Research Article
Information
Laser and Particle Beams , Volume 31 , Issue 4 , December 2013 , pp. 715 - 722
Copyright
Copyright © Cambridge University Press 2013 

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