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    • 5. 发明授权
    • Method and structure for controlling magnetic field distributions in an ExB Wien filter
    • 用于控制ExB Wien滤波器中的磁场分布的方法和结构
    • US08835866B2
    • 2014-09-16
    • US13111634
    • 2011-05-19
    • James B. McGinn
    • James B. McGinn
    • H01J1/50H01J37/05H01J49/28H01J37/15
    • H01J37/05H01J37/15H01J49/288H01J2237/057H01J2237/31749
    • An ExB Wien mass filter providing a method and structure for mechanically adjusting the magnetic field distributions at the mass filter entrance and exit end caps. The reluctance of the flux return path may be modified by configuring pluralities of magnetic shims within slots at the outer diameters of the entrance and exit end caps, and also by configuring pluralities of magnetic plug shims within circular flux dams surrounding the entrance and exit apertures. Advantages of purely mechanical adjustment for the magnetic fields of the present invention, compared with prior art electromagnet adjustment methods include greater reliability, simplicity, lower cost, and lack of power dissipation. The invention may employ either permanent magnets or electromagnets for generation of the mass-separation magnetic field.
    • 提供了一种用于机械调节质量过滤器入口和出口端盖处的磁场分布的方法和结构的ExB维恩质量过滤器。 可以通过在入口和出口端盖的外径处的槽内配置多个磁性垫片,并且还可以通过在入口和出口孔周围的圆形焊剂坝内配置多个磁性塞子垫片来修改磁通返回路径的磁阻。 与现有技术的电磁调节方法相比,本发明的磁场纯机械调整的优点包括更高的可靠性,简便性,更低的成本和功耗的缺乏。 本发明可以采用永磁体或电磁体来产生质量分离磁场。
    • 6. 发明申请
    • Method and Structure for Controlling Magnetic Field Distributions in an ExB Wien Filter
    • 用于控制ExB Wien滤波器中磁场分布的方法和结构
    • US20120292497A1
    • 2012-11-22
    • US13111634
    • 2011-05-19
    • James B. McGinn
    • James B. McGinn
    • H01J49/30
    • H01J37/05H01J37/15H01J49/288H01J2237/057H01J2237/31749
    • An ExB Wien mass filter providing a method and structure for mechanically adjusting the magnetic field distributions at the mass filter entrance and exit end caps. The reluctance of the flux return path may be modified by configuring pluralities of magnetic shims within slots at the outer diameters of the entrance and exit end caps, and also by configuring pluralities of magnetic plug shims within circular flux dams surrounding the entrance and exit apertures. Advantages of purely mechanical adjustment for the magnetic fields of the present invention, compared with prior art electromagnet adjustment methods include greater reliability, simplicity, lower cost, and lack of power dissipation. The invention may employ either permanent magnets or electromagnets for generation of the mass-separation magnetic field.
    • 提供了一种用于机械调节质量过滤器入口和出口端盖处的磁场分布的方法和结构的ExB维恩质量过滤器。 可以通过在入口和出口端盖的外径处的槽内配置多个磁性垫片,并且还可以通过在入口和出口孔周围的圆形焊剂坝内配置多个磁性塞子垫片来修改磁通返回路径的磁阻。 与现有技术的电磁调节方法相比,本发明的磁场纯机械调整的优点包括更高的可靠性,简便性,更低的成本和功耗的缺乏。 本发明可以采用永磁体或电磁体来产生质量分离磁场。