xray辐x射线英文.pptx

Radiation X-Ray Vocabulary X-ray：X射线 X-ray spectrum：射线谱 Coherent scattering：相干散射 Incoherent scattering：非相干散射 attenuation of X-ray： X射线的衰减 Absorb of X-ray： X射线的真吸收 Optic-electric effect：光电效应 fluorescent radiation：荧光辐射 Electromagnetic radiation Nuclear radiation Radiation X-rays Discovered by Roentgen, 1895 λ = 0.1 – 10 nm Characteristic Spectral Lines 帕邢系 巴尔末系 赖曼系 excitation emission emission emission excitation emission X - ray is a kind of electromagnetic wave For light, the minimum resolvable distance between 2 points: =  / NA Limiting case for light  200m or nm Fundamental Equivalency Energy versus Wavelength of Photons E = h .  ergs per single photon E = h . c /  ergs per single photon h = Plancks constant = 1.38 10-16 erg sec X-Ray Tubes X-Ray Tubes 1-高压变压器;2-钨丝变压器； 3-X射线管；4-阳极； 5-阴极；6-电子；7-X射线 1 2 3 4 5 6 7 Application of X-ray X-ray technology has been widely used in various fields. X-ray Measure 测量 ・Density measurement 密度计测 ・ X light perspective X光透视 ・ fluorescent X-ray analysis 荧光X射线分析 ・ Sterilization of medical equipment 医疗用具杀菌 ・ Improved variety 品种改良 ・ Cancer treatment 癌症治疗 Application of X-ray in medicine X射线在医学方面的应用 ＬＥＤ 焊 接 不 良 Poor welding 焊 接 不 良 Poor welding 锂 电 池 Lithium battery 检查电极结合部的连接 MCM 多芯片组件 CSP (Chip Scale Package)芯片级封装技术 Question：Please write down three application of X-ray. Thanks