快速氩离子在固体中2s和2p空穴的产生过程

对４３—９５ＭｅＶ的氩离子在与固体靶（Ｚ_t＝６—７４）碰撞中产生的Ｋα卫星线和超级卫星线作了高精度测量，得到了氩离子２ｓ和２ｐ支壳层空穴产生的概率，并对空穴产生的过程作了解释 关键词：     

EBIT束线成像及束流密度测算

本文介绍了在EBIT中，使用狭缝为电子束成像的过程．同时论述了对采集的像的修正和计算分析，以及对于采集图像和数据分析中存在的误差的分析．从而计算得到EBIT电子束的束流密度．并且讨论了在计算模拟中，针对EBIT和本实验所需要的一些特别设定．     

Electron beam density study using a portable slit imaging system at the Shanghai Electron Beam Ion Trap

In this work,a portable slit imaging system is developed to study both the electron beam diameter and the profile of the newly developed Shanghai Electron Beam Ion Trap (Shanghai EBIT).Images are detected by a charge coupled device (CCD) sensitive to both X rays and longer wavelength photons (up to visible).Large scale ray tracings were conducted for correcting the image broadening effects caused by the finite slit width and the finite width of the CCD pixels.A numerical de-convolution method was developed to analyse and reconstruct the electron beam density distribution in the EBIT.As an example of the measured beam diameter and current density,the FWHM (full width at half maximum) diameter of the electron beam at 81 keV and 120 mA is found to be 76.2 μm and the density 2.00 × 10 3 A·cm 2,under a magnetic field of 3 T,including all corrections.