Enhanced hole boring with two-color relativistic laser pulses in the fast ignition scheme

Journal Article · Mon Aug 15 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4960036· OSTI ID:22599859

Yu, Changhai; Tian, Ye; Li, Wentao; Wang, Wentao; Zhang, Zhijun; Qi, Rong; Wang, Cheng ^[1]; Deng, Aihua ^[2]; Liu, Jiansheng ^[1]

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1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
2. Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States)

A scheme of using two-color laser pulses for hole boring into overdense plasma as well as energy transfer into electron and ion beams has been studied using particle-in-cell simulations. Following an ultra-short ultra-intense hole-boring laser pulse with a short central wavelength in extreme ultra-violet range, the main infrared driving laser pulse can be guided in the hollow channel preformed by the former laser and propagate much deeper into an overdense plasma, as compared to the case using the infrared laser only. In addition to efficiently transferring the main driving laser energy into energetic electrons and ions generation deep inside the overdense plasma, the ion beam divergence can be greatly reduced. The results might be beneficial for the fast ignition concept of inertial confinement fusion.

• OSTI ID: 22599859
• Journal Information: Physics of Plasmas, Vol. 23, Issue 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLOR
COMPARATIVE EVALUATIONS
ENERGY TRANSFER
HOLES
INERTIAL CONFINEMENT
ION BEAMS
LASERS
PARTICLES
PLASMA
PULSES
RELATIVISTIC RANGE
SIMULATION
TAIL ELECTRONS
THERMONUCLEAR IGNITION
WAVELENGTHS