High yield inertial confinement fusion target design for a {ital z}-pinch-driven hohlraum
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
- Sandia National Laboratories, Albuquerque, New Mexico 87185-1191 (United States)
Calculations are presented for a high yield inertial fusion design, employing indirect drive with a double-ended {ital z}-pinch-driven hohlraum radiation source. A high current ({approximately}60 MA) accelerator implodes {ital z} pinches within an enclosing hohlraum. Radial spoke arrays and shine shields isolate the capsule from the pinch plasma, magnetic field, and direct x-ray shine. Our approach places minimal requirements on {ital z}-pinch uniformity and stability, usually problematic due to magneto-Rayleigh{endash}Taylor instability. Large inhomogeneities of the pinch and spoke array may be present, but the hohlraum adequately smooths the radiation field at the capsule. Simultaneity and reproducibility of the pinch x-ray output to better than 7{percent} are required, however, for good symmetry. Recent experiments suggest a pulse shaping technique, through implosion of a multishell {ital z} pinch. X-ray bursts are calculated and observed to occur at each shell collision. A capsule absorbing 1 MJ of x rays at a peak drive temperature of 210 eV is found to have adequate stability and to produce 400 MJ of yield. A larger capsule absorbs 2 MJ with a yield of 1200 MJ. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 344942
- Report Number(s):
- CONF-981127--
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 6; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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