Free electron laser |
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| 申请号 | JP21990190 | 申请日 | 1990-08-21 | 公开(公告)号 | JPH0391286A | 公开(公告)日 | 1991-04-16 |
| 申请人 | Commiss Energ Atom; | 发明人 | ETEIIBUAN KUROODO; | ||||
| 摘要 | PURPOSE: To produce a high output electromagnetic radiation in the form of long term pulse by employing an electron beam stored in a storage ring while being accelerated and setting the field axis principally in parallel with the electron beam in the storage ring. CONSTITUTION: The laser comprises means 4 for accelerating electrons emitted from an electron source 2 to produce an electron beam 6, and a ring 8 for storing the electron beam. The storage ring 8 has a shape of race course comprising two linear parts facing each other. A magnetic wave unit 10 is disposed on one linear part 9. The storage ring 8 extends longitudinally along the axis of the linear part 9 on the opposite sides of the magnetic wave unit 10. An electromagnetic radiation source 20 to be amplified is disposed oppositely to one opening, e.g. opening 16, so that the radiation from the unit 10 acts in the direction of the electron beam 6. In addition, a magnetic means 22 generates a field for circulating the electron beam 6 along a closed path in the storage ring 8. An electron radiation cathode means 28 comprises parallel metal plates 30 extending on the opposite sides of the electron beam 6 and an electric field of pulse for attracting electrons from a cathode is formed between. Subsequently, the electron beam 6 is accelerated by the accelerating means 4. COPYRIGHT: (C)1991,JPO |
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