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    • 6. 发明授权
    • Apparatus and method for regulating the output of a plasma electron beam source
    • 用于调节等离子体电子束源的输出的装置和方法
    • US08288950B2
    • 2012-10-16
    • US12899012
    • 2010-10-06
    • Scott G. WaltonChristopher D. CothranRichard F. FernslerRobert A. MegerWilliam E. Amatucci
    • Scott G. WaltonChristopher D. CothranRichard F. FernslerRobert A. MegerWilliam E. Amatucci
    • H05B31/26
    • H01J3/025H01J15/02
    • An apparatus and method for controlling electron flow within a plasma to produce a controlled electron beam is provided. A plasma is formed between a cathode and an acceleration anode. A control anode is connected to the plasma and to the acceleration anode via a switch. If the switch is open, the ions from the plasma flow to the cathode and plasma electrons flow to the acceleration anode. With the acceleration anode suitably transparent and negatively biased with a DC high voltage source, the electrons flowing from the plasma are accelerated to form an electron beam. If the switch is closed, the ions still flow to the cathode but the electrons flow to the control anode rather than the acceleration anode. Consequently, the electron beam is turned off, but the plasma is unaffected. By controlling the opening and closing of the switch, a controlled pulsed electron beam can be generated.
    • 提供了一种用于控制等离子体内的电子流以产生受控电子束的装置和方法。 在阴极和加速度阳极之间形成等离子体。 控制阳极通过开关连接到等离子体和加速器阳极。 如果开关断开,来自等离子体的离子流向阴极,等离子体电子流向加速度阳极。 由于采用直流高电压源加速阳极适当地透明和负偏压,所以从等离子体流出的电子被加速以形成电子束。 如果开关闭合,离子仍然流到阴极,但电子流向控制阳极,而不是加速阳极。 因此,电子束被关闭,但是等离子体不受影响。 通过控制开关的打开和关闭,可以产生受控的脉冲电子束。
    • 8. 发明授权
    • High velocity electromagnetic mass launcher having an ablation resistant
insulator
    • 具有耐烧蚀绝缘体的高速电磁质量发射器
    • US5856630A
    • 1999-01-05
    • US252474
    • 1994-06-01
    • Robert A. Meger
    • Robert A. Meger
    • F41B6/00
    • F41B6/006
    • A railgun having a composite insulator of laminated materials positioned between the rails. The composite insulator is comprised of a series of conducting layers oriented with the edges toward the bore, or barrel, of the railgun and their wide edges away from the bore. The laminate is layed lengthwise along the rails and is comprised of conducting layers of a high heat conductivity metal interleaved with an insulator material. The insulator material allows the composite insulator to stand off the voltages in a plasma armature even under high radiation flux conditions. Below the conducting material's ablation threshold the amount of ablation produced by the composite insulator is reduced by the reduction of insulator surface area exposed to the radiation. This allows better control of armature growth, mass acceleration by the plasma armature, secondary formation, and other factors normally found to retard projectile acceleration.
    • 轨道枪具有位于轨道之间的层压材料的复合绝缘体。 复合绝缘体包括一系列导电层,导电层的边缘朝向轨道枪的孔或筒,并且其宽边远离孔。 层压板沿着导轨沿纵向铺设,并由与绝缘体材料交错的高导热性金属的导电层组成。 即使在高辐射通量条件下,绝缘体材料也允许复合绝缘体脱离等离子体电枢中的电压。 在导电材料的消融阈值以下,由复合绝缘子产生的消融量通过暴露于辐射的绝缘体表面积的减小来减少。 这允许更好地控制电枢生长,通过等离子体电枢的质量加速,二次形成以及通常发现延迟弹丸加速度的其他因素。