J. Phys. IV France
Volume 133, June 2006
Page(s) 881 - 885
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 881-885

DOI: 10.1051/jp4:2006133177

Cryogenic target development for fast ignition with Z-pinch-driven fuel assembly

D.L. Hanson1, R.A. Vesey1, S.A. Slutz1, M.E. Cuneo1, J.L. Porter1, D.B. Sinars1, D.G. Schroen2, C.O. Russell2, D.A. Steinman3, A. Nikroo3, J.L. Kaae3 and E.M. Giraldez3

1  Sandia National Laboratories, Albuquerque, New Mexico 87185-1193, USA
2  Schafer Corp., Livermore, California 94551, USA
3  General Atomics, San Diego, California 92186, USA

We are developing an alternative approach to indirect-drive fast ignition fusion targets in which a liquid cryogenic fuel layer is condensed in situ from a low pressure external gas supply and confined between a thick outer ablator shell and a thin inner shell. The shape and surface quality of the liquid fuel layer is determined entirely by the characteristics of the bounding shells. Liquid fuel targets of this type have a number of potential advantages including greatly reduced temperature control requirements and drastically reduced cost and complexity of the cryogenic support system compared to $\beta $-layed DT targets. This liquid fuel concept is particularly appropriate for a hemispherical capsule configuration with single-sided x-ray drive by a z-pinch source. Technology issues for concentric-shell liquid cryogenic target development and progress in thin inner hemispherical shell fabrication are discussed.

© EDP Sciences 2006