Ablation dominated implosion dynamics of aluminum and stainless steel nested cylindrical wire arrays

Journal Article · Thu Jan 15 04:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3054522· OSTI ID:21272463

Williamson, K M; Kantsyrev, V L; Esaulov, A A; Safronova, A S; Ouart, N D; Yilmaz, F M; Shrestha, I K; Shlyaptseva, V ^[1]; McBride, R D; Chalenski, D A; Douglass, J D; Greenly, J B; Hammer, D A; Kusse, B R ^[2]

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1. Department of Physics, University of Nevada, Reno, Nevada 89557 (United States)
2. Laboratory of Plasma Studies, Cornell University, Ithaca, New York 14853 (United States)

The results of experiments with combined aluminum (Al) and stainless steel (SS) alloy 304, nested wire arrays from the 1 MA COBRA generator at Cornell University are presented. The loads studied consisted of a 6 mm diameter inner array and a 13 mm diameter outer array with a different material in each array: SS or aluminum. Al implodes before SS in all loads studied, even when Al was on the inner array. The new wire ablation dynamic model and spectroscopic modeling are used to interpret these data. The observed implosion dynamics are likely a result of the higher ablation rate of Al. These initial results suggest that combining wire materials with different ablation rates in wire array loads could be developed into a useful technique for x-ray pulse shaping and radiation yield optimization.

• OSTI ID: 21272463
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
ALLOYS
ALUMINIUM
IMPLOSIONS
SIMULATION
STAINLESS STEELS
X-RAY SOURCES