In inertial fusion energy(IFE)research,a number of technological issues have focused on the ability to inexpensively fabricate large quantities of free-standing targets(FSTs)by developing a specialized layering module...In inertial fusion energy(IFE)research,a number of technological issues have focused on the ability to inexpensively fabricate large quantities of free-standing targets(FSTs)by developing a specialized layering module with repeatable operation.Of central importance for the progress towards plasma generation with intense thermonuclear reactions is the fuel structure,which must be isotropic to ensure that fusion will take place.In this report,the results of modeling the FST layering time,τForm,are presented for targets which are shells of^4 mm in diameter with a wall made from compact and porous polymers.The layer thickness is^200μm for pure solid fuel and^250μm for in-porous solid fuel.Computation showsτForm<23 s for D2 fuel andτForm<30 s for D–T fuel.This is an excellent result in terms of minimizing the tritium inventory,producing IFE targets in massive numbers(~1 million each day)and obtaining the fuel as isotropic ultrafine layers.It is shown experimentally that such small layering time can be realized by the FST layering method in line-moving,high-gain direct-drive cryogenic targets using n-fold-spiral layering channels at n=2,3.展开更多
In inertial fusion energy(IFE) research, a considerable attention has recently been focused on the issue of large target fabrication for MJ-class laser facilities. The ignition and high-gain target designs require a c...In inertial fusion energy(IFE) research, a considerable attention has recently been focused on the issue of large target fabrication for MJ-class laser facilities. The ignition and high-gain target designs require a condensed uniform layer of hydrogen fuel on the inside of a spherical shell. In this report, we discuss the current status and further trends in the area of developing the layering techniques intended to produce ignition, and layering techniques proposed to high repetition rate and mass production of IFE targets.展开更多
基金supported by the International Atomic Energy Agency under Research Contract No. 20344by the Russian Government in the frame of the State Task Program
文摘In inertial fusion energy(IFE)research,a number of technological issues have focused on the ability to inexpensively fabricate large quantities of free-standing targets(FSTs)by developing a specialized layering module with repeatable operation.Of central importance for the progress towards plasma generation with intense thermonuclear reactions is the fuel structure,which must be isotropic to ensure that fusion will take place.In this report,the results of modeling the FST layering time,τForm,are presented for targets which are shells of^4 mm in diameter with a wall made from compact and porous polymers.The layer thickness is^200μm for pure solid fuel and^250μm for in-porous solid fuel.Computation showsτForm<23 s for D2 fuel andτForm<30 s for D–T fuel.This is an excellent result in terms of minimizing the tritium inventory,producing IFE targets in massive numbers(~1 million each day)and obtaining the fuel as isotropic ultrafine layers.It is shown experimentally that such small layering time can be realized by the FST layering method in line-moving,high-gain direct-drive cryogenic targets using n-fold-spiral layering channels at n=2,3.
文摘In inertial fusion energy(IFE) research, a considerable attention has recently been focused on the issue of large target fabrication for MJ-class laser facilities. The ignition and high-gain target designs require a condensed uniform layer of hydrogen fuel on the inside of a spherical shell. In this report, we discuss the current status and further trends in the area of developing the layering techniques intended to produce ignition, and layering techniques proposed to high repetition rate and mass production of IFE targets.
