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The Mass Spectrometer

The Mass Spectrometer. 質譜儀. Isotope Separation Centrifuge and diffusion chamber. 同位素分離. 迴旋加速器 ( cyclotrons ). 迴旋頻率不因速率增加而改變，因此可用定頻交流電持續加速）. 同步加速器 ( synchrotrons). The resonance condition: When proton energy > 50Mev: Out of resonance (relativistic effect)

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The Mass Spectrometer

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  1. The Mass Spectrometer

  2. 質譜儀 Isotope Separation Centrifuge and diffusion chamber

  3. 同位素分離

  4. 迴旋加速器 (cyclotrons) • 迴旋頻率不因速率增加而改變，因此可用定頻交流電持續加速）

  5. 同步加速器 (synchrotrons) • The resonance condition: • When proton energy > 50Mev: • Out of resonance (relativistic effect) • A huge magnet (4×106 m2) is needed for high energy (500Gev) protons • The proton sychrotron at Fermilab can produces 1Tev proton

  6. Fermilab – 6.3km Tevatron

  7. 載流導線

  8. 載流導線所受的磁力

  9. 載流線圈

  10. Speaker

  11. Voice-coil positioner of a HDD

  12. MHD Propulsion

  13. Maglev Trains

  14. EM Rail Gun

  15. Magnetic Resonance Imaging

  16. Magnetic Resonance Imaging

  17. Positron Emission Tomography

  18. Bone Scanning and Heart Disease

  19. Nuclear Medicine Images

  20. III.3 電磁感應 • Two symmetric Situations • current loop + magnetic field → torque • torque + magnetic field → current • Two Experiments • Applications

  21. First Experiment • A Magnet is moving with respect to the loop

  22. Second Experiment The switch S is closed or opened

  23. Faraday’s law • An emf is induced when the number of magnetic field lines that pass through the loop is changing

  24. A Simple Example

  25. Magnetic Tape Recording

  26. Electric Guitar

  27. The Playback Head

  28. The moving-coil microphone

  29. Transformer

  30. Transmitting Electricity

  31. Eddy currents The electromagnetic braking

  32. Metal detector

  33. III.4 電磁波 • 加速之電荷會產生電磁波 • 時變電場產生感應磁場；時變磁場產生感應電場 • 電磁波頻譜（光譜） • 雷射（Laser）

  34. LC 震盪器

  35. 時變電場與時變磁場

  36. 電波與磁波

  37. 電磁波頻譜

  38. Theory of Lasers

  39. He-Ne Lasers

  40. Applications of Lasers

  41. Compact Disc

  42. Theory of X-ray

  43. Medical X-rays

  44. 2D and 3D X-ray Images

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