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公开(公告)号：US10989179B1
公开(公告)日：2021-04-27
申请号：US15987885
申请日：2018-05-23
申请人： Mahadevan Krishnan
摘要： A pulsed metal plasma thruster (MPT) cube has a plurality of thrusters, each having a first cathode electrode and a trigger electrode separated from the first electrode by an insulator sufficient to support an initiation plasma, and a porous anode electrode positioned a separation distance from the face of all of the cathode electrodes. The cathode electrode can be either the inner electrode or the outer electrode. A power supply delivers a high voltage pulse to the trigger electrode with respect to the cathode electrode sufficient to initiate a plasma on the surface of the insulator. The plasma transfers between the anode electrode and cathode electrode of selected thrusters, thereby generating a pulse of thrust.
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公开(公告)号：US09109715B2
公开(公告)日：2015-08-18
申请号：US12245748
申请日：2008-10-05
申请人： Mahadevan Krishnan
发明人： Mahadevan Krishnan
CPC分类号： F16K31/0658 , B05B1/005 , B05B1/14
摘要： A high speed valve has a conductive flyer plate responsive to eddy currents induced by an adjacent coil. The eddy currents generate a repulsive force which opens the valve, and a low-mass flyer plate and spring combined with a resonant plate and spring combination provide a fast opening and closing time for the valve. A nozzle structure directs a supersonic flow of gas into a rectangular array of high-density gas suitable for interaction with a laser beam transverse to the rectangular array of jets for the production of wakefield interaction, leading to very high-energy electrons from the gas jet.
摘要翻译： 高速阀具有响应于相邻线圈感应的涡流的导电翼板。 涡流产生打开阀的排斥力，并且与共振板和弹簧组合的低质量飞盘和弹簧组合为阀提供快速的打开和关闭时间。 喷嘴结构将超音速气流引导成高密度气体的矩形阵列，其适于与横向于矩形阵列阵列的激光束相互作用，用于产生尾流相互作用，导致来自气体射流的非常高能量的电子 。
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13.发明授权公开(公告)号：US07053333B1
公开(公告)日：2006-05-30
申请号：US10919424
申请日：2004-08-16
IPC分类号： B23K10/00
CPC分类号： H05H1/54 , F03H1/0012 , F03H1/0087
摘要： An apparatus for producing a vacuum arc plasma source device using a low mass, compact inductive energy storage circuit powered by a low voltage DC supply acts as a vacuum arc plasma thruster. An inductor is charged through a switch, subsequently the switch is opened and a voltage spike of Ldi/dt is produced initiating plasma across a resistive path separating anode and cathode. The plasma is subsequently maintained by energy stored in the inductor. Plasma is produced from cathode material, which allows for any electrically conductive material to be used. A planar structure, a tubular structure, and a coaxial structure allow for consumption of cathode material feed and thereby long lifetime of the thruster for long durations of time.
摘要翻译： 使用由低电压DC电源供电的低质量，紧凑的感应能量存储电路的真空电弧等离子体源装置的制造装置用作真空电弧等离子体推进器。 电感器通过开关充电，随后开关断开，并产生Ldi / dt的电压尖峰，从而在隔离阳极和阴极的电阻路径上引发等离子体。 等离子体随后由存储在电感器中的能量保持。 等离子体由阴极材料制成，其允许使用任何导电材料。 平面结构，管状结构和同轴结构允许阴极材料进料的消耗，从而长时间持续推进器的寿命长。
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公开(公告)号：US08038858B1
公开(公告)日：2011-10-18
申请号：US11268167
申请日：2005-11-07
IPC分类号： C23C14/54
CPC分类号： C23C14/046 , C23C14/0635 , C23C14/325 , H01J37/32055 , H01J37/32614 , H01J37/34
摘要： An apparatus for deposition of plasma reaction films includes a substrate for the deposition of either thin or thick films. The substrate also allows for a film deposition which adheres to the substrate, and also films which may be removed after deposition. The cathode may be fabricated from individual wires, or it may be fabricated from a single conductor. A macro-particle filter which preferentially traps larger particles may be introduced between a porous cathode and the deposition surface. The macro-particle filter may also carry electrical current as is useful for generating a magnetic field such that a Lorentz force acts preferentially on ionized particles, allowing them to pass through the filter while trapping macroparticles that are not influenced by the magnetic field.
摘要翻译： 用于沉积等离子体反应膜的装置包括用于沉积薄膜或厚膜的衬底。 衬底还允许粘附到衬底上的膜沉积，以及沉积后可以去除的膜。 阴极可以由单独的导线制造，或者可以由单个导体制造。 可以在多孔阴极和沉积表面之间引入优先捕获较大颗粒的宏粒子过滤器。 宏粒子滤波器还可以承载用于产生磁场的电流，使得洛伦兹力优先作用于电离粒子，允许它们在捕获不受磁场影响的大颗粒的同时通过过滤器。
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公开(公告)号：US07867366B1
公开(公告)日：2011-01-11
申请号：US10834592
申请日：2004-04-28
CPC分类号： C23C14/325 , C23C14/046 , C23C14/0635 , H01J37/32055 , H01J37/32614
摘要： An apparatus for the deposition of a variable thickness coating onto the inside of a cylindrical tube comprises a variable pressure gas, an cathode coaxially positioned within the cylinder, and a voltage source applied between the cathode and cylindrical tube, which functions as an anode. A radial plasma arc is generated between the anode and cathode at a starting point on the cylinder, and the plasma arc travels down the central axis of the cylinder, providing a helical deposition region on the inside of the cylinder. Selection of the combination of cathode material and gas enable the plasma to generate ionic material which is deposited on the anodic cylinder in the region of the plasma. By varying the pressure of variable pressure gas for each helical path, it is possible to vary the composition of this deposition film.
摘要翻译： 用于将可变厚度涂层沉积到圆柱形管内部的装置包括可变压力气体，同轴位于气缸内的阴极和施加在阴极和圆柱形管之间的电压源，其用作阳极。 在圆柱体的起点处，在阳极和阴极之间产生径向等离子弧，等离子体电弧沿着圆柱体的中心轴向下移动，在气缸的内侧提供螺旋形沉积区域。 选择阴极材料和气体的组合使得等离子体能够产生在等离子体区域中沉积在阳极圆柱体上的离子材料。 通过改变每个螺旋路径的可变压力气体的压力，可以改变该沉积膜的组成。
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公开(公告)号：US20100084494A1
公开(公告)日：2010-04-08
申请号：US12245748
申请日：2008-10-05
申请人： Mahadevan Krishnan
发明人： Mahadevan Krishnan
CPC分类号： F16K31/0658 , B05B1/005 , B05B1/14
摘要： A high speed valve has a conductive flyer plate responsive to eddy currents induced by an adjacent coil. The eddy currents generate a repulsive force which opens the valve, and a low-mass flyer plate and spring combined with a resonant plate and spring combination provide a fast opening and closing time for the valve. A nozzle structure directs a supersonic flow of gas into a rectangular array of high-density gas suitable for interaction with a laser beam transverse to the rectangular array of jets for the production of wakefield interaction, leading to very high-energy electrons from the gas jet.
摘要翻译： 高速阀具有响应于相邻线圈感应的涡流的导电翼板。 涡流产生打开阀的排斥力，并且与共振板和弹簧组合的低质量飞盘和弹簧组合为阀提供快速的打开和关闭时间。 喷嘴结构将超音速气流引导成高密度气体的矩形阵列，其适于与横向于矩形阵列阵列的激光束相互作用，用于产生尾流相互作用，导致来自气体射流的非常高能量的电子 。
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17.发明授权Method and apparatus for separating substances of different atomic weights using a plasma centrifuge 失效使用等离子体离心机分离不同原子量的物质的方法和装置
公开(公告)号：US4458148A
公开(公告)日：1984-07-03
申请号：US276087
申请日：1981-06-22
摘要： The present invention is directed to a method and apparatus for centrifugally separating substances of different atomic weights. The substances to be separated are positioned in an evacuated vessel which has a longitudinal axis. A magnetic field is generated in the vessel parallel to the longitudinal axis of the vessel and a target comprised of the substances to be separated is positioned within the vessel at one end thereof. A collector is positioned at the other end of the vessel. Pulsed laser energy is focused on the substances to be separated thereby fully ionizing at least a portion of the substances and forming a plasma therefrom. Immediately following the focusing of the laser energy, a current is passed through the substances to be separated which causes further full ionization of the substances and thereby the formation of additional plasma. The ionized plasma is rotated and moved from the substances which are to be separated to a collector by the application of the magnetic field. At least a portion of the ionized substances are separated by the centrifugal force resulting from the rotation of the plasma by the magnetic field.
摘要翻译： 本发明涉及用于离心分离不同原子量的物质的方法和装置。 要分离的物质定位在具有纵轴的真空容器中。 在血管平行于容器的纵向轴线产生磁场，并且由待分离物质组成的靶位于容器的一端。 收集器位于容器的另一端。 脉冲激光能量集中于要分离的物质，从而完全电离至少一部分物质并从中形成等离子体。 紧接在激光能量的聚焦之后，电流通过待分离的物质，这导致物质的进一步完全电离，从而形成额外的等离子体。 离子化等离子体通过施加磁场而从被分离的物质转移到集电体。 离子化物质的至少一部分被由等离子体通过磁场旋转产生的离心力分离。
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