Neutron, electron and photon transport in ICF tragets in direct and fast ignition

• Main Authors: A. Parvazian, A. Okhovat
• Format: Article
• Language: English
• Published: Isfahan University of Technology 2005-12-01
• Series: Iranian Journal of Physics Research
• Subjects: fusion; pellet; heavy ion; ICF; direct ignition; fast ignition; energy gain; D-T
• Online Access: http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1-212&slc_lang=en&sid=1

Fusion energy due to inertial confinement has progressed in the last few decades. In order to increase energy efficiency in this method various designs have been presented. The standard scheme for direct ignition and fast ignition fuel targets are considered. Neutrons, electrons and photons transport in targets containing different combinations of Li and Be are calculated in both direct and fast ignition schemes. To compress spherical multilayer targets having fuel in the central part, they are irradiated by laser or heavy ion beams. Neutrons energy deposition in the target is considered using Monte Carlo method code MCNP. A significant amount of neutrons energy is deposited in the target which resulted in growing fusion reactions rates. It is found that Beryllium compared to Lithium is more important. In an introductory consideration of relativistic electron beam transport into central part of a fast ignition target, we have calculated electron energy deposition in highly dense D-T fuel and Beryllium layer of the target. It has been concluded that a fast ignition scheme is preferred to direct ignition because of the absence of hydrodynamic instability.