Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum
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چکیده
منابع مشابه
Radiating shock measurements in the Z-pinch dynamic hohlraum.
The Z-pinch dynamic hohlraum is an x-ray source for high energy-density physics studies that is heated by a radiating shock to radiation temperatures >200 eV. The time-dependent 300-400 eV electron temperature and 15-35 mg/cc density of this shock have been measured for the first time using space-resolved Si tracer spectroscopy. The shock x-ray emission is inferred from these measurements to ex...
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In this HELIOS benchmark simulation, a spherical capsule embedded in a low-density CH2 foam is imploded by an external radiation field. The parameters utilized in this benchmark simulation are taken from z-pinch-driven dynamic hohlraum experiments performed at the Z facility at Sandia National Laboratories [1]. The time-dependent hohlraum radiation field is constrained by on-axis XRD and bolome...
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Radiation science using Z-pinch x rays J. E. Bailey, G. A. Chandler, D. Cohen, M. E. Cuneo, M. E. Foord, R. F. Heeter, D. Jobe, P. W. Lake, J. J. MacFarlane, T. J. Nash, D. S. Nielson, R. Smelser, and J. Torres Sandia National Laboratories, Albuquerque, New Mexico 87185-1196 Swarthmore College, Swarthmore, Pennsylvania 19081 Lawrence Livermore National Laboratory, Livermore, California 94550 K-...
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The mass ablation phase of a wire-array Z pinch is investigated using steady-state r , simulations. By identifying the dominant physical mechanisms governing the ablation process, a simple scaling relation is derived for the mass ablation rate ṁ with drive current I, in the case where radiation is the primary energy transport mechanism to the wire core. In order to investigate the dependence of...
متن کاملWire initiation critical for radiation symmetry in z-pinch-driven dynamic hohlraums.
Axial symmetry in x-ray radiation of wire-array z pinches is important for the creation of dynamic hohlraums used to compress inertial-confinement-fusion capsules. We present the first evidence that this symmetry is directly correlated with the magnitude of the negative radial electric field along the wire surface. This field (in turn) is inferred to control the initial energy deposition into t...
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ژورنال
عنوان ژورنال: Matter and Radiation at Extremes
سال: 2018
ISSN: 2468-080X
DOI: 10.1016/j.mre.2018.06.001