Preheating of a target by laser radiation through plasma and polymer aerogel |
| |
Authors: | Natalia G Borisenko and Yuriy A Merkuliev |
| |
Institution: | (1) Kazan Physical-Technical Institute, Russian Academy of Sciences, Sibirsky trakt 10/7, 420029 Kazan, Russia;(2) Kazan State University, Kremlevskaya 18, 420008 Kazan, Russia;(3) Laser Zentrum Hannover, Hollerithallee 8, 30419 Hannover, Germany;(4) NPO Academpribor, Academy of Sciences of Uzbekistan, Academgorodok, 700125 Tashkent, Uzbekistan |
| |
Abstract: | Processing of X-ray and optical streak-camera images after brightness amplification 5 proves unambiguously the existence of a preheating
of the foil in two-layer targets (polymer aerogel plus Al foil). We observed this effect earlier at the accuracy limit of
the experiment. Preheating may be explained by the initial transmission of laser radiation by an inhomogeneous plasma and
aerogel remnants. The fraction of laser energy that passed through a microheterogeneous plasma to the foil or shell is small
in comparison with the total energy in the pulse, but it comes to the target (foil or shell) at the initial period of the
laser pulse and can be significantly affected by the dynamics of plasma and the efficiency of spherical cryogenic thermonuclear
targets. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|