公开(公告)号：CA1169966A

公开(公告)日：1984-06-26

申请号：CA394100

申请日：1982-01-13

Applicant: NASA

Inventor： KOSMAHL HENRY G

IPC: H01J23/24 ,  H01J23/27 ,  H01J25/40 ,  H01J25/34

Abstract: Ladder Supported Ring Bar Circuit - - An improved slow wave circuit especially useful in backward wave oscillators includes a slow wave circuit (10) in a waveguide (12) as shown in FIG. 1. The slow wave circuit is comprised of rings 11 disposed between and attached to respective stubs (13, 14). The stubs (13, 14) are attached to opposing sidewalls of the waveguide (12). To the end that opposed, interacting magnetic fields will be established to provide a very high coupling impedance for the slow wave structure, axially oriented bars (20) are connected between rings in alternate spaces and adjacent to the attachment points of stubs 13. Similarly, axial bars (21) are connected between rings in the spaces which do not include bars (20) and at points adjacent to the attachments of bars (21). FIG. 2 shows the current loops (22, 23) available because of the inventive structure. FIG. 3 shows that rings 11 may be half rings of 180.degree. arc. FIG. 4 illustrates that the rings or half rings (11) with stubs (13, 14) may be formed of flat metal ribbons.

公开(公告)号：CA1219672A

公开(公告)日：1987-03-24

申请号：CA446021

申请日：1984-01-25

Applicant: NASA

Inventor： KOSMAHL HENRY G

IPC: H01J23/26 ,  H01J23/24 ,  H01J25/34

Abstract: LINEARIZED TRAVELING WAVE AMPLIFIER WITH HARD LIMITER CHARACTERISTICS A traveling wave tube (10) has a helical slow wave structure (18) including a sever (21). A dynamic velocity taper is provided by gradually reducing the spacing (26) between the adjacent repeating elements of the slow wave structure, which are the windings of the helix. The reduction takes place between Zo indicated by line (23) and Zs which coincides with the output point of the helix as indicated by line (22). The spacing is decreased at an exponential rate up to about 15% at Zs.

公开(公告)号：US3702951A

公开(公告)日：1972-11-14

申请号：US3702951D

申请日：1971-11-12

Applicant: NASA

Inventor： KOSMAHL HENRY G

IPC: H01J3/02 ,  H01J23/027 ,  H01J23/02

CPC classification number: H01J3/02 ,  H01J23/0275

Abstract: A charged particle collector comprising a stack of apertured electrode plates which lie within an imaginary sphere is provided. The plate closet to a charged particle emitter forms a portion of the imaginary sphere and is at zero volts potential with respect to the emitter. The plate farthest away from the charged particle emitter is of conical shape with the apex pointing toward the emitter and includes a spike extending toward the emitter. The conical plate has either a negative or positive potential with respect to the emitter, depending on whether the charged particles are negative or positive. A plurality of intermediate apertured electrode plates are positioned between the plate which forms a portion of the sphere and the conical plate, each of the plates being at a slightly lower potential than the preceding plate moving in a direction toward the emitter. These intermediate plates approximate the shape of an equipotential line which would be plotted for the particular voltage applied to the plate.

Abstract translation: 提供一种带电粒子收集器，其包括位于虚拟球体内的多孔电极板堆叠。 带电粒子发射器的平板箱形成虚拟球体的一部分并且相对于发射器处于零伏特电位。 距离带电粒子发射器最远的板是圆锥形的，顶点指向发射器，并且包括朝向发射器延伸的尖峰。 锥形板相对于发射器具有负电势或正电位，取决于带电粒子是负极还是正极。 多个中间多孔电极板位于形成球体的一部分的板和锥形板之间，每个板的电位低于在朝向发射极的方向上移动的前一板的电位。 这些中间板接近等电位线的形状，该等电位线将针对施加到该板的特定电压进行绘制。

公开(公告)号：CA979062A

公开(公告)日：1975-12-02

申请号：CA175403

申请日：1973-06-27

Applicant: NASA

Inventor： KOSMAHL HENRY G

IPC: H01J23/027 ,  H01J29/64

Abstract: A magnet applies a magnetic field of predetermined intensity and shape to a spent electron beam over an axial distance having a predetermined relationship to the frequency of operation of a utilization device which has extracted energy from the electron beam and at a predetermined axial distance after the beam has left the magnetic field of the utilization device and entered the beam expansion region and beam stabilization region. The stabilizing magnetic field is terminated abruptly before the electron beam enters a collector apparatus.

公开(公告)号：DE2332118A1

公开(公告)日：1974-01-17

申请号：DE2332118

申请日：1973-06-23

Applicant: NASA

Inventor： KOSMAHL HENRY G

IPC: H01J23/027 ,  H01J29/64 ,  H01J23/08

Abstract: A magnet applies a magnetic field of predetermined intensity and shape to a spent electron beam over an axial distance having a predetermined relationship to the frequency of operation of a utilization device which has extracted energy from the electron beam and at a predetermined axial distance after the beam has left the magnetic field of the utilization device and entered the beam expansion region and beam stabilization region. The stabilizing magnetic field is terminated abruptly before the electron beam enters a collector apparatus.