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    • 9. 发明公开
    • Electrostatic ion accelerator
    • Elektrostatischer Ionenbeschleuniger。
    • EP0300105A2
    • 1989-01-25
    • EP87307575.8
    • 1987-08-27
    • SCIENCE RESEARCH LABORATORY INC
    • Shefer, RuthKlinkowstein,Robert Edward
    • H05H5/00H05H5/06G21K1/14A61N5/10G21G4/02
    • G21K1/14A61N5/10A61N2005/1087H05H5/00H05H5/06
    • 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.
    • 产生高电流(0.2至至少2毫安),低能量(2.2至4 MV)离子束,并用于产生临床显着量的医用同位素,用于正电子发射断层扫描等应用。 对于优选实施例,使用串联加速器。 由高电流负离子源(200)产生的负离子(202)由其中通过固态电源产生必要的高电压的静电加速器加速。 加速离子然后进入汽提电池(212),其从离子中去除电子,将其转化成正离子。 然后将正离子(218)加速至优选处于地电位的靶。 对于优选实施例,用于开发所需电压的固态电源是与离子源(200)和汽提器(212)之间的加速器同轴的级联整流器电源(206),并被设计成具有 基本上与加速器的最大电压梯度匹配的电压梯度。