Energy penetration into arrays of aligned nanowires irradiated with relativistic intensities: Scaling to terabar pressures.

ABSTRACT: Ultrahigh-energy density (UHED) matter, characterized by energy densities >1 × 10⁸ J cm^-3 and pressures greater than a gigabar, is encountered in the center of stars and inertial confinement fusion capsules driven by the world's largest lasers. Similar conditions can be obtained with compact, ultrahigh contrast, femtosecond lasers focused to relativistic intensities onto targets composed of aligned nanowire arrays. We report the measurement of the key physical process in determining the energy density deposited in high-aspect-ratio nanowire array plasmas: the energy penetration. By monitoring the x-ray emission from buried Co tracer segments in Ni nanowire arrays irradiated at an intensity of 4 × 10¹⁹ W cm^-2, we demonstrate energy penetration dep

SUBMITTER: Bargsten C 

PROVIDER: S-EPMC5226645 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature