| Literature DB >> 25122242 |
D T Casey1, V A Smalyuk1, K S Raman1, J L Peterson1, L Berzak Hopkins1, D A Callahan1, D S Clark1, E L Dewald1, T R Dittrich1, S W Haan1, D E Hinkel1, D Hoover2, O A Hurricane1, J J Kroll1, O L Landen1, A S Moore3, A Nikroo2, H-S Park1, B A Remington1, H F Robey1, J R Rygg1, J D Salmonson1, R Tommasini1, K Widmann1.
Abstract
Hydrodynamic instabilities are a major obstacle in the quest to achieve ignition as they cause preexisting capsule defects to grow and ultimately quench the fusion burn in experiments at the National Ignition Facility. Unstable growth at the ablation front has been dramatically reduced in implosions with "high-foot" drives as measured using x-ray radiography of modulations at the most dangerous wavelengths (Legendre mode numbers of 30-90). These growth reductions have helped to improve the performance of layered DT implosions reported by O. A. Hurricane et al. [Nature (London) 506, 343 (2014)], when compared to previous "low-foot" experiments, demonstrating the value of stabilizing ablation-front growth and providing directions for future ignition designs.Entities:
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Year: 2014 PMID： 25122242 DOI： 10.1103/PhysRevE.90.011102
Source DB: PubMed Journal: Phys Rev E Stat Nonlin Soft Matter Phys ISSN： 1539-3755