• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physics of plasmas >Hollow wall to stabilize and enhance ignition hohlraums
【24h】

Hollow wall to stabilize and enhance ignition hohlraums

机译：空心墙稳定和增强点火Hohlraums

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the context of the indirect-drive scheme of the inertial-confinement fusion, performance of the gas-filled hohlraums at the National Ignition Facility appears to be reduced. Experiments ascertain a limited efficacy of the laser beam propagation and x-ray conversion. One identified issue is the growth of the gold plasma plume (or bubble) which is generated near the ends of the hohlraum by the impact of the laser beams. This bubble impedes the laser propagation towards the equator of the hohlraum. Furthermore, for high foot or low foot laser pulses, the gold-gas interface of the bubble can be unstable. If this instability should grow to mixing, the x-ray conversion could be degraded. A novel hollow-walled hohlraum is designed, which drastically reduces the growth of the gold bubble and stabilizes the gold-gas interface. The hollow walls are built from the combination of a thin gold foil and a gold domed-wall. We theoretically explain how the bubble expansion can be delayed and the gold-gas interface stabilized. This advanced design lets the laser beams reach the waist of the hohlraum. As a result, the x-ray drive on the capsule is enhanced, and more spherical implosions are obtained. Furthermore, this design only requires intermediate gas fill density to be efficient. Published by AIP Publishing.
机译：在惯性监禁融合的间接驱动方案的背景下，国家点火设施的燃气Hohlraums的性能似乎减少。实验确定激光束传播和X射线转换的有限功效。一个鉴定的问题是通过激光束的影响在Hohlraum的末端附近产生的金等离子体羽毛（或泡沫）的生长。该气泡阻碍了朝向Hohlraum赤道的激光传播。此外，对于高脚或低脚激光脉冲，气泡的金气界面可能是不稳定的。如果不稳定应该增长混合，则X射线转换可能会降低。设计了一种新型空心壁的Hohlraum，它彻底减少了金泡的生长并稳定了金气界面。空心壁由薄金箔和金圆顶壁的组合构成。理论上，理论上解释了气泡膨胀如何延迟，金气界面稳定。这种先进的设计让激光束到达HOHLRAUM的腰部。结果，提高了胶囊上的X射线驱动，并且获得了更多的球形内注。此外，这种设计仅需要中间气体填充密度才能有效。通过AIP发布发布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号