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    • 56. 发明专利
    • Plasma mass filter
    • 空值
    • JP3721301B2
    • 2005-11-30
    • JP2000256655
    • 2000-08-28
    • アルキメデス オペレーティング、エルエルシー
    • オーカワ チヒロ
    • H01J49/26B01D59/48B01J19/08H01J49/28H01J49/30H01J49/42H01J49/46H05H1/00
    • B03C1/023B01D59/48B03C1/288H01J49/328H01J49/38H01J49/46
    • A method for separating charged particles according to their mass requires providing a multi-species plasma in a chamber. The plasma includes both relatively low-mass charged particles (M1) and relatively high-mass charged particles (M2) which are influenced by crossed electric and magnetic fields (E x B) in the chamber. Specifically, the crossed fields (E x B) rotate the particles M1 and M2 in respective orbits that are characteristic of the mass of the particular particle. Inside the chamber, each charged particle has a respective cyclotron frequency ( OMEGA ), and the plasma is maintained with a density wherein the collisional frequency ( nu ) of particles in the chamber relates to the cyclotron frequency such that their ratio is greater than approximately one ( OMEGA / nu ≥ 1). Additionally, a collector is positioned to intercept the particles (M2) in their orbits and to thereby separate the particles (M2) from the particles (M1).
    • 根据其质量分离带电粒子的方法需要在室中提供多种类的等离子体。 等离子体包括受室内交叉电场和磁场(E×B)影响的相对低质量的带电粒子(M1)和相对高质量的带电粒子(M2)。 具体地说,交叉场(E×B)使颗粒M1和M2在特定颗粒质量的特征的相应轨道中旋转。 在室内,每个带电粒子具有各自的回旋加速器频率(OMEGA),并且等离子体保持密度,其中腔室中的颗粒的碰撞频率(nu)与回旋加速器频率相关,使得其比率大于约1 (OMEGA /nu≥1)。 另外,收集器定位成在它们的轨道上拦截颗粒(M2),从而将颗粒(M2)与颗粒(M1)分离。