Resumo
Synchrotron light is generated by relativistic charges describing curved trajectories. It is produced by electron/positron beams running in a vacuum chamber, kept in a closed orbit by bending magnets, focussed by quadrupolar magnets and accelerated by RF fields in a resonant cavity. The power radiated, the spectral range extending from visible light (photon energy about 2 eV) to hard X rays (photon energy 20 000 eV), the polarization and the collimation make these sources unique in the ultraviolet and X ray regions, where no lasers are available. The applications include valence level spectroscopy (at energies up to say 20 eV) in atoms and molecules, structural studies (crystal structure, phase transitions, nature of the chemical neighborhood, shape of nanoparticles, etc), biological studies (membranes, crystallized proteins) and microfabrication.
Referências
R. P A. Muniz e A. F. Craievich, Eds. Projeto Radiação Síncrotron: Técnicas e Aplicações da Radiação Síncrotron, Publ. CBPF, Rio de Janeiro, 1-3 Ago 1983; A F Craievich, Ed., Synchrotron Light: Applications and related instrumentation, Publ. World Scientific, Singapore, 1989; A F Craievich, Ed., Synchrotron Light: Applications and related instrumentation II, Publ. World Scientific, Singapore, 1990.
J D Jackson, Classical Electrodynamics, 2nd Ed, John Wiley and Sons, New York, 1975, Chapter 14, pg 670.
E E Koch, T Sasaki and H Winick, Eds., Handbook on Synchrotron Radiation, North Holland Publishers, Amsterdam, 1983.
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