Send to

Choose Destination
Phys Rev Lett. 2007 Apr 13;98(15):155001. Epub 2007 Apr 12.

Shock ignition of thermonuclear fuel with high areal density.

Author information

Fusion Science Center and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.


A novel method by C. Zhou and R. Betti [Bull. Am. Phys. Soc. 50, 140 (2005)] to assemble and ignite thermonuclear fuel is presented. Massive cryogenic shells are first imploded by direct laser light with a low implosion velocity and on a low adiabat leading to fuel assemblies with large areal densities. The assembled fuel is ignited from a central hot spot heated by the collision of a spherically convergent ignitor shock and the return shock. The resulting fuel assembly features a hot-spot pressure greater than the surrounding dense fuel pressure. Such a nonisobaric assembly requires a lower energy threshold for ignition than the conventional isobaric one. The ignitor shock can be launched by a spike in the laser power or by particle beams. The thermonuclear gain can be significantly larger than in conventional isobaric ignition for equal driver energy.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center