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Memorias de investigación
Artículos en revistas:
Fast ignitor target studies for the HiPER Proyect
Año:2008
Áreas de investigación
  • Electrónica
Datos
Descripción
Target studies for the proposed High Power Laser Energy Research HiPER facility [M. Dunne, Nature Phys. 2, 2 2006] are outlined and discussed. HiPER will deliver a 3wwavelength =0.35 micron, multibeam, multi-ns pulse of about 250 kJ and a 2 or 3w pulse of 70¿100 kJ in about 15 ps. Its goal is the demonstration of laser driven inertial fusion via fast ignition. The baseline target concept is a direct-drive single shell capsule, ignited by hot electrons generated by a conically guided ultraintense laser beam. The paper first discusses ignition and compression requirements, and presents gain curves, based on an integrated model including ablative drive, compression, ignition and burn, and taking the coupling efficiency ig of the igniting beam as a parameter. It turns out that ignition and moderate gain (up to 100)can be achieved, provided that adiabat shaping is used in the compression, and the efficiency exceeds 20%. Using a standard ponderomotive scaling for the hot electron temperature, a 2or 3wignition beam is required to make the hot electron range comparable to the desired size of the hot spot. A reference target family is then presented, based on one-dimensional fluid simulation of compression, and two-dimensional fluid and hybrid simulations of fast electron transport, ignition, and burn. The sensitivity to compression pulse shape, as well as to hot electron source location, hot electron range, and beam divergence is also discussed. Rayleigh¿Taylor instability at the ablation front has been addressed by a model and a perturbation code. Simplified simulations of code-guided target implosions have also been performed.
Internacional
Si
JCR del ISI
Si
Título de la revista
PHYSICS OF PLASMAS
ISSN
1070-664X
Factor de impacto JCR
2,325
Información de impacto
Volumen
15
DOI
10.1063/1.2895447
Número de revista
5
Desde la página
056311-1
Hasta la página
10
Mes
MAYO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: A. SCHIAVI
  • Participante: S. ATZENI
  • Autor: Jose Javier Honrubia Checa (UPM)
  • Participante: y otros
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Investigación en Fusión Inercial y Física de Plasmas
  • Departamento: Física Aplicada a la Ingeniería Aeronáutica
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