公开(公告)号：US4880983A

公开(公告)日：1989-11-14

申请号：US175887

申请日：1988-03-31

Applicant: John K. Markey

Inventor： John K. Markey

IPC: H01J47/00

CPC classification number: H01J47/008 ,  H01J47/005

Abstract: A method is provided for detecting ionization comprising allowing particles that cause ionization to contact high pressure xenon maintained at or near its critical point and measuring the amount of ionization.An apparatus is provided for detecting ionization, the apparatus comprising a vessel containing a ionizable medium, the vessel having an inlet to allow high pressure ionizable medium to enter the vessel, a means to permit particles that cause ionization of the medium to enter the vessel, an anode, a cathode, a grid and a plurality of annular field shaping rings, the field shaping rings being electrically isolated from one another, the anode, cathode, grid and field shaping rings being electrically isolated from one another in order to form an electric field between the cathode and the anode, the electric field originating at the anode and terminating at the cathode, the grid being disposed between the cathode and the anode, the field shaping rings being disposed between the cathode and the grid, the improvement comprising the medium being xenon and the vessel being maintained at a pressure of 50 to 70 atmospheres and a temperature of 0.degree. to 30.degree. C.

Abstract translation: 提供了一种用于检测电离的方法，包括允许引起电离的颗粒接触保持在其临界点处或其临界点附近的高压氙并测量电离量。 提供了一种用于检测电离的装置，该装置包括容纳可离子化介质的容器，该容器具有允许高压可离子化介质进入容器的入口，允许引起介质离子化进入容器的颗粒的装置， 阳极，阴极，栅格和多个环形场成形环，所述场成形环彼此电隔离，所述阳极，阴极，栅极和场成形环彼此电隔离以形成电 阴极和阳极之间的电场，源自阳极的电场并终止于阴极，栅格设置在阴极和阳极之间，场成形环设置在阴极和栅极之间，改进包括介质 为氙气，容器保持在50〜70个大气压，0〜30℃的温度。