Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Fast ignition induced by shocks generated by laser-accelerated proton beams.
Year:2009
Research Areas
  • Physics - Atomic and molecular physics
Information
Abstract
Fast ignition (FI) of a deuterium-tritium target compressed to a density of 500 g cm(-3) by the energy deposition of two laser-accelerated proton beams is studied by two-dimensional (2D) and three-dimensional (3D) numerical simulations. The first proton beam has an annular radial profile while the second beam is cylindrical. Both beams are characterized by a super-Gaussian profile in radius. A 3D-hydrodynamic study has been performed to identify a way to generate a nearly annular energy deposition by using a discrete number of cylindrical beams. It has been found that the energy deposited by the first proton beam can modify the density and temperature of the plasma before the arrival of the second beam allowing ignition in a zone not directly irradiated by the beams. Thus, differently from the classical FI concept, fuel ignition is not a direct consequence of plasma heating by the particle beam. Indeed, ignition occurs as a result of the synergetic action of the shocks generated by proton energy deposition.
International
Si
JCR
Si
Title
PLASMA PHYSICS AND CONTROLLED FUSION
ISBN
0741-3335
Impact factor JCR
2,299
Impact info
Volume
51
10.1088/0741-3335/51/3/035010
Journal number
3
From page
035010
To page
035010
Month
MARZO
Ranking
Participants
  • Autor: S. Atzeni
  • Autor: Mauro Temporal (UPM)
  • Autor: Rafael Ramis Abril (UPM)
  • Autor: Jose Javier Honrubia Checa (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Investigación en Fusión Inercial y Física de Plasmas
  • Departamento: Física Aplicada a la Ingeniería Aeronáutica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)