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Research on Concentration of Soft X-ray emitted from Z-pinch

Z收缩发射软X射线的聚集研究

基本信息

批准号：
07044166
负责人：
MIYAMOTO Tetsu
金额：
$ 2.24万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044166/
关键词：
Z-pinch Soft Z-ray Capillary Converter X-ray spectroscopy Z-pinch Gas-puff Z-pinch Soft X ray Spectral analysis Capillary convertor

项目摘要

The X-ray radiation emitted from the gas-puff Z-pinch device in Nihon University was observed by the X-ray technologies developed in the Scientific Institute of Technical Glass. The gas-puff Z-pinch emits intensive X-rays with a wide wave length. The observation was carried out by glass capillary converters and X-ray spectrometers.The glass capillary converter propagated selectedly the soft X-ray with longer wave length than 1 nm and converged it in a spot within 1 mm. It plays a role of filter for the hard X-ray with shorter wave length. Making use of this feature the thermal plasma profile was observed removing the effect of hard X-rays emitted by high energy electrons accelerated by the applied electric field.In the spectroscopy both crystal and multi-layr membrane were used for diffraction. The fabricated spectroscopy is small and simple, and it is easy to change the measuring length by replacing a crystal. In the crystal interferometer two wave length regions, 3.4-4.6 nm and less than 1 nm, were measured. Both regions of radiation were emitted from specially different place. The previous measurement showed that the X-ray radiation was emitted in different instance and from different place. The present result was consistent of it. The latter radiation was emitted from the hot spot relating with instabilities except the surface of the electrodes. In the spectroscopy with the multi-layr membrane, both spectral lines and one-dimensional, special distribution was observed. As our spectroscopic pictures were obtained by integrating 50-100 times shots, the profile of special distribution was quite ambiguous. However, both spectral lines and special profile will be obtained simultaneously for more bright X-ray source.

利用日本玻璃技术研究所开发的x射线技术，对日本大学充气z捏装置发出的x射线辐射进行了观测。气体膨胀的Z-pinch发射出具有宽波长的强x射线。用玻璃毛细管变换器和x射线光谱仪进行观察。玻璃毛细管变换器选择性地传播波长大于1nm的软x射线，并将其汇聚在1mm以内的一个点上。它对波长较短的硬x射线起过滤作用。利用这一特性，观察到热等离子体轮廓消除了由外加电场加速的高能电子发射的硬x射线的影响。光谱学中采用晶体衍射法和多层膜衍射法。所制备的光谱体积小，结构简单，通过更换晶体即可改变测量长度。在晶体干涉仪中测量了3.4 ~ 4.6 nm和小于1 nm两个波长区域。这两个区域的辐射是从不同的地方发出的。先前的测量表明，x射线辐射是在不同的情况下和不同的地方发出的。目前的结果与此一致。后一种辐射是从除电极表面外与不稳定性有关的热点发射的。在多层膜的光谱中，光谱线和一维的特殊分布都被观察到。由于我们的光谱图像是由50-100次拍摄积分得到的，特殊分布的轮廓相当模糊。然而，对于更亮的x射线源，将同时获得谱线和特殊剖面。