X-ray高速电子撞击阳极产生射线，是何原理

伊洛河畔

教材只是说高速电子撞击阳极产生射线，但是没说是什么原理。求高人指点
我的理解，射线照射物体会与电子发生光电效应，反之也可以乎

inconel

"The type of Interaction That Produces  Characteristic Radiation , Also Illustrated above (in the "Kinetic" paragraph), involves a Collision BETWEEN the High-Speed Electrons and the orbital Electrons in the Atom. The Interaction CAN Occur only if the incoming Electron has a Kinetic Energy greater than the  Binding Energy of the Electron Within the Atom. When this condition exists, and the Collision Occurs, the Electron is dislodged from the Atom. When the orbital Electron is removed, it Leaves a Vacancy Filled by an Electron That is from a higher energy level. As the filling electron moves down to fill the vacancy, it gives up energy emitted in the form of an x-ray photon. This is known as characteristic radiation because the energy of the photon is characteristic of the chemical element that serves as the anode material. In the example shown, the electron dislodges a tungsten K-shell electron, which has a binding energy of 69.5 keV. The vacancy is filled by an electron from the L shell, which has a binding energy of 10.2 keV . The characteristic x-ray photon, therefore, has an energy equal to the energy difference between these two levels, or 59.3 keV. "




http://www.sprawls.org/ppmi2/XRAYPRO/


Other Interesting Links are,
http://www.columbia.edu/itc/hs/dental/sophs/material/production_xrays.pdf


http://xrayweb.chem.ou.edu/notes/xray.html


You can also refer, Principles of Dental Imaging By Olaf E. Langland, Robert P. Langlais, John W. Preece, page No.24 for condition necessary for the production of X-Rays.

shlsrgsbyxgs

看看高中的物理书吧，电子的点位跃迁的时候都会放出一些射线的，就是利用这个原理

伊洛河畔

楼上说的不全面，电子迁越，产生的是标识谱，也就是特定频率，而Xray是连续谱+标识谱。

fgh222

感谢分享有关经验和信息

伊洛河畔

这个，我咨询了下高人，高人答复
高速电子和原子发生库伦效应，减速过程中产生射线连续谱，同时一部分原子内部电子发生迁越，产生特征谱。
特分享，如有不足或者纰漏，请高人指正。不胜感激。

u810299

主要分3種,依能量不同會有差異.