Recent results of a study on the injected entropy approach to the ignition of high-gain targets

Angelo Caruso; Carmela Strangio

doi:10.1117/12.425536

23 April 2001 Recent results of a study on the injected entropy approach to the ignition of high-gain targets

Angelo Caruso, Carmela Strangio

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425536
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

Abstract

The most recent results on the injected entropy method to the ignition of high gain targets are presented. The base of the method is the ignition of high gain targets by energy injection in the final stages of the fuel implosion. In this scheme most of the energy needed to form the ignition spark is still provided by the work of the imploding target itself, as in the standard ICF scheme. The injected energy is used to set on a higher adiabat that small portion of the fuel destined to become the ignition spark. After a short analytical introduction to the method, the result of extensive numerical simulations by a 2D code are presented. The considered cases refer to imploding cylinders of finite length. The additional energy was injected axially by one or two opposing beams, whereas the acceleration stage of the cylindrical low-entropy implosion was assumed driven by a different driver. Heavy ion beams, soft x-rays and laser generated light ion beams were considered as vectors for the entropy injection. Issues related to the feasibility of these generators are discussed. The study was made for various initial conditions leading to different ignition modes and burn propagation.

Citation Download Citation

Angelo Caruso and Carmela Strangio "Recent results of a study on the injected entropy approach to the ignition of high-gain targets", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425536

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KEYWORDS

Ion beams

Ions

Laser induced breakdown spectroscopy

X-rays

Picosecond phenomena

Electrons

Fusion energy

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