直接驱动惯性约束聚变内爆中的系统燃料腔不对称性

Systematic Fuel Cavity Asymmetries in Directly Driven Inertial Confinement Fusion Implosions.

作者信息

Shah R C, Haines B M, Wysocki F J, Benage J F, Fooks J A, Glebov V, Hakel P, Hoppe M, Igumenshchev I V, Kagan G, Mancini R C, Marshall F J, Michel D T, Murphy T J, Schoff M E, Silverstein K, Stoeckl C, Yaakobi B

机构信息

Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Sandia National Laboratories, Albuquerque, New Mexico 87123, USA.

出版信息

Phys Rev Lett. 2017 Mar 31;118(13):135001. doi: 10.1103/PhysRevLett.118.135001. Epub 2017 Mar 30.

DOI:10.1103/PhysRevLett.118.135001

PMID:28409959

Abstract

We present narrow-band self-emission x-ray images from a titanium tracer layer placed at the fuel-shell interface in 60-laser-beam implosion experiments at the OMEGA facility. The images are acquired during deceleration with inferred convergences of ∼9-14. Novel here is that a systematically observed asymmetry of the emission is linked, using full sphere 3D implosion modeling, to performance-limiting low mode asymmetry of the drive.

摘要

我们展示了在欧米伽（OMEGA）装置的60束激光内爆实验中，置于燃料-壳层界面的钛示踪层的窄带自发射X射线图像。这些图像是在减速过程中获取的，推断的压缩比约为9至14。在此新颖之处在于，利用全球面三维内爆模型，将系统观测到的发射不对称性与驱动的限制性能的低模不对称性联系起来。