Advanced scheme for high-yield laser driven nuclear reactions

D. Margarone*, A. Picciotto, A. Velyhan, J. Krasa, M. Kucharik, A. Mangione, A. Szydlowsky, A. Malinowska, G. Bertuccio, Y. Shi, M. Crivellari, J. Ullschmied, P. Bellutti, G. Korn

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The use of a low contrast nanosecond laser pulse with a relatively low intensity (3 × 1016 W cm-2) allowed the enhancing of the yield of induced nuclear reactions in advanced solid targets. In particular the 'ultraclean' proton-boron fusion reaction, producing energetic alpha particles without neutron generation, was chosen. A spatially well-defined layer of boron dopants in a hydrogen-enriched silicon substrate was used as a target. A combination of the specific target composition and the laser pulse temporal shape allowed the enhancing of the yield of alpha particles up to 109 per steradian. This result can be ascribed to the interaction of the long-laser pre-pulse with the target and to the optimal target geometry and composition.

Original languageEnglish
Article number014030
JournalPlasma Physics and Controlled Fusion
Volume57
Issue number1
Early online date28 Nov 2014
DOIs
Publication statusPublished - 01 Jan 2015
Externally publishedYes

Keywords

  • Laser fusion
  • Laser plasma
  • Nuclear reaction

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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