Design of an Indirect-Drive Pulse Shape for ～1.6 MJ Inertial Confinement Fusion Ignition Capsules

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2014,（4）
• 页码范围: 89-92
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/31/4/045201

摘要

We present a design of indirect-drive pulse shape for inertial confinement fusion ignition capsules using laser energy ～I.6 MJ with a moderate gain (～10) on the Shenguang Ⅳ laser facility.The trade-off fuel compression (pressure) for resistance to the hydrodynamic instability (HI) in the recent high-foot (HF) implosion campaign /Dittrich T R et al Phys.Rev.Lett.112 (2014)055002] is recovered.The proposed design modifies the "main" pulse shape,which features a decompression-recompression step for the fuel shell resulting in higher areal density than that of the "simple" HF design,and thereby approaches the conditions required for ignition avoiding at the expense of more laser energy while holding the HI under control.