Research on X-Ray Radiation from Laser Plasmas

激光等离子体X射线辐射的研究

• 批准号: 63045019
• 负责人: NAKAI Sadao
• 金额: $ 4.42万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63045019/
• 关键词: Laser Fusion; Laser plasma; X-ray emission; Radiation confinement; Radiation transport; 輻射駆動爆縮核融合

A joint experiment between ILE, Osaka University, Japan and MPQ, Germany was undertaken in February-March, 1989 using the Gekko Xll glass laser facility at the Institute of Laser Engineering. The main objective of the experiment was to demonstrate enhancement of x-ray radiation due to radiation confinement in a cavity made of high-Z material. In addition to this obfective being achieved, direct observation of propagation of a heat wave in a high-Z material and of a heating wave in a low-Z material was also demonstrated. These results were examined quatitatively with the theories that have been developed at both MPQ and ILE.Using the quantitative understandings obtained above, a radiation-driven fusion, target was designed and was tested at ILE. Radiation confinement in a cavity enabled symmetric implosion of the fusion pellet to a high density and a high temperature sufficient for producing fusion reactions.

1989 年 2 月至 3 月，ILE、日本大阪大学和德国 MPQ 使用激光工程研究所的 Gekko Xll 玻璃激光设备进行了联合实验。该实验的主要目的是证明由于辐射限制在由高 Z 材料制成的腔体中而导致 X 射线辐射增强。除了实现这一目标之外，还演示了对高Z材料中的热波传播和低Z材料中的热波传播的直接观察。这些结果用 MPQ 和 ILE 开发的理论进行了定量检验。利用上面获得的定量理解，设计了辐射驱动聚变目标并在 ILE 进行了测试。腔内的辐射限制使得聚变弹丸对称内爆至足以产生聚变反应的高密度和高温。

项目成果

R. Sigel et al: "Experimental observation of laser-induced radiation heat waves" Physical Review Letters. 65. 587-590 (1990)

R. Sigel 等人：“激光诱导辐射热波的实验观察”物理评论快报。

G. D. Tsakiris, et al: "Radiation confinement in x-ray heated cavities" Physical Review. A42. 6188-6191 (1990)

G. D. Tsakiris 等人：“X 射线加热腔中的辐射限制”物理评论。

G.D.Tsakiris: "Radiation Confinement in XーRay Heated Cavities" Physical Review. A42. 6188-6191 (1990)

G.D.Tsakiris：“X 射线加热腔中的辐射限制”物理评论 A42（1990）。

R. Sigel et al: "Heat wave and radiation confinement in laser-heated cavities" IAEA 13th International Conference on Plasma Physics and Controlled Nuclear Fusion Research. IEA-CAN-53. B-2-1 (1990)

R. Sigel 等人：“激光加热腔中的热波和辐射限制”国际原子能机构第 13 届等离子体物理和受控核聚变研究国际会议。