Temperature mapping of imploded plasmas by the use of monochromatic X-ray imaging

使用单色 X 射线成像绘制内爆等离子体的温度图

• 批准号: 05452394
• 负责人: NISHIMURA Hiroaki
• 金额: $ 4.54万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452394/
• 关键词: Laser Fusion; X-ray monochromatic imaging; Imploded Plasma; Plasma measurement and diagnostic; プラズマ計測・診断; X線画像計測; X線モノクロカメラ; レーザープラズマX線

To derive temperature mapping of laser driven fusion core plasma, 5 channel monochromatic imaging camera was designed and fabricated by using toroidally bent Bragg crystals. Space resolution of the camera was experimentally checked to be better than 10 mum on object. As seed materials, a tiny amount of Ar was mixed in a D2 fuel and Cl was chemically included in a fuel container. The monochromatic images of Ar Hebeta, ArLybeta, Ar free-bound, Cl Hebeta and Cl Lybeta lines were successfully obtained. The image recording detector was either x-ray film or x-ray CCD camera, thus the observation was made in time integration manner. By the help of spectrum analysis code, the obtained images were analyzed to provide temperature distribution of the compressed core for the first time. And the temperature distribution was compared with one-dimensional simulations to investigate implosion behavior. The research will be extended to attain time-resolving measurements by attaching the camera to x-ray framing camera capable of 30 ps time resolution.

为了获得激光驱动聚变堆芯等离子体的温度分布，采用环形弯曲布拉格晶体设计并制作了5通道单色成像相机。空间分辨率的相机进行了实验检查是优于10妈妈的对象。作为种子材料，在D2燃料中混合少量Ar，并在燃料容器中化学地包含Cl。成功地获得了Ar Hebeta、Ar Lybeta、Ar自由束缚、Cl Hebeta和Cl Lybeta谱线的单色像。图像记录检测器为X射线胶片或X射线CCD摄像机，因此观察是以时间积分方式进行的。利用频谱分析软件对获得的图像进行分析，首次给出了压缩核的温度分布。并与一维数值模拟结果进行了比较，研究了内爆行为。该研究将扩展到通过将相机连接到能够具有30 ps时间分辨率的X射线分幅相机来实现时间分辨测量。

项目成果

I.Uschmann,E. Forster,H. Nishimura,他: "Temperature Mapping of Compressed Fusion Pellets obtained by Monochromatic Imaging" Review of Scientific Instruments. 66. 734-737 (1995)

I. Uschmann、E. Forster、H. Nishimura 等人：“通过单色成像获得的压缩聚变颗粒的温度图”科学仪器评论 66. 734-737 (1995)。

H.Nishimura,他: "Study of Indirectly-Driven Implosion by X-ray Spectroscopic Measurements" Physics of Plasmas. 2. 2063-2074 (1995)

H. Nishimura 等人：“通过 X 射线光谱测量间接驱动内爆的研究”《等离子体物理学》2. 2063-2074 (1995)。

H.Nishimura,他8名: "Study of Indirectly-driven implosion by x-ray spectroscopic measuvements" Physics of Plasmas. 2. 2063-2074 (1995)

H. Nishimura 等 8 人：“通过 X 射线光谱测量间接驱动内爆的研究”《等离子体物理学》2. 2063-2074 (1995)。

I.Uschmann,E.Foerster,H.Nishimura,K.Fujita et al: "Temperature mapping of compressed fusion pellets obstained by monochromatic imaging" Review of Scientific Instruments. vol.10(未定). (1994)

I.Uschmann、E.Foerster、H.Nishimura、K.Fujita 等人：“通过单色成像获得的压缩聚变颗粒的温度图”科学仪器评论第 10 卷（待定）。

西村博明,白神宏元,畦地 宏,宮永憲明: "レーザー核融合における高分解能X線画像および中性子計測 -レーザー核融合技術小特集:プラズマ計測技術-" 核融合研究. 70. 1259-1268 (1994)

Hiroaki Nishimura、Hiromoto Shirakami、Hiroshi Azechi、Noriaki Miyanaga：“激光聚变中的高分辨率 X 射线图像和中子测量 - 激光聚变技术专题：等离子体测量技术 -” Fusion Research 70. 1259-1268 (1994)。 ）