第一讲 引言、同步辐射的产生与性质.pdf

Classification of light E (eV) = 1240/ λ(nm) 1 eV = 1.6x10-19 Joule Micro- Name Radio wave wave Soft X-ray Hard X-ray Visible Electric wave X-ray Vacuum Infrared γ-ray ultraviolet Ultraviolet m mm μm nm Wavelength ( ) λ Frequency ( ) ν Energy (E) Chap.1 Introduction The synchrotron radiation (SR, 同步辐射) is the radiation emitted from fast electrons with the velocity almost equal to light velocity moving on circular and undulating orbits. The SR is the intense continuum or quasi-monochromatic light in the region from infrared to hard X-ray through extreme (vacuum) ultraviolet and soft X-ray and very useful for materials and life sciences. At present, there are 50 SR facilities in the world and in China, 3 facilities. They are in Beijing, Hefei and Taiwan. In Shanghai, a new facility will be opened in 2009 at Pudong district. Shanghai Institute for Applied Physics, Chinese Academy of Sciences is responsible for its construction. In this lecture, I would like to talk about characteristics of synchrotron radiation, light source, optical instruments, applications of SR in the vacuum ultraviolet and soft X-ray regions, in the hard X-ray region and in the infrared regi