Trends in radiation production from dynamic-hohlraums driven by single and nested wire arrays
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The axial radiation developed primarily from the interior of an imploding dynamic hohlraum (DH) target within a Z pinch using a single array with a large number of tungsten wires is compared with that generated using a standard [Phys. Plasmas 9, 3573 (2002)] nested (outer plus inner) array on Z. These measurements indicate that a single-array with a mass (2.5 mg) near that of the combined mass of the nested-array maximizes the DH axial power. At this mass, the DH utilizing the standard nested array generates (23±15)%(23±15)% more axial power than that of a single array. Measurements over a range of single-array masses (2–6 mg) show a decrease in radiation power for masses above 3.5 mg. Two-dimensional radiation magnetohydrodynamic simulations, which have successfully described radial emission from targetless implosions for both single and nested-array configurations [Phys. Plasmas 6, 2178 (1999)], but, do not follow the observed trends well. Furthermore, this lack of tracking implies that current 2D models, which take into account the development of the magnetic Rayleigh–Taylor (RT) instability in the r–zr–z plane, require improvements in order to provide a self-consistent description of the implosion dynamics and radiation production for DH experiments.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 889411
- Report Number(s):
- SAND2003-0131J; PHPAEN; TRN: US0604397
- Journal Information:
- Physics of Plasmas, Vol. 10, Issue 8; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Diagnosed internal temperatures and shock evolution provide insight on dynamic-Hohlraum's axial radiation production and asymmetry
High Temperature Dynamic Hohlraums on the Pulsed Power Driver Z