Electrostatic ion accelerator |
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| 申请号 | EP87307575.8 | 申请日 | 1987-08-27 | 公开(公告)号 | EP0300105A3 | 公开(公告)日 | 1989-08-09 |
| 申请人 | SCIENCE RESEARCH LABORATORY INC; | 发明人 | Shefer, Ruth; Klinkowstein,Robert Edward; | ||||
| 摘要 | A high current (0.2 to at least 2 milliamperes), low-energy (2.2 to 4 MV) ion beam is generated and is utilized to produce clinically significant quantities of medical isotopes useful in applications such as positron emission tomography. For a preferred embodiment, a tandem accelerator is utilized. Negative ions (202) generated by a high current negative-ion source (200) are accelerated by an electrostatic accelerator in which the necessary high voltage is produced by a solid state power supply. The accelerated ions then enter a stripping cell (212) which removes electrons from the ions, converting them into positive ions. The positive ions (218) are then accelerated to a target which is preferably at ground potential. For a preferred embodiment, the solid state power supply utilized to develop the required voltages is a cascade rectifier power supply (206) which is coaxial with the accelerator between the ion source (200) and the stripper (212), and is designed to have a voltage gradient which substantially matches the maximum voltage gradient of the accelerator. | ||||||
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