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1. 发明授权

US3971942A Gamma-ray camera including novel converter matrix useful therein 失效
标题翻译： γ射线照相机包括其中有用的新型转换器阵列
公开(公告)号：US3971942A
公开(公告)日：1976-07-27
申请号：US503284
申请日：1974-09-05
申请人： Ady Seidman , Zohar Avrahami , Benjamin Sheinfux , Jan Grinberg , Uri Shimoni
发明人： Ady Seidman , Zohar Avrahami , Benjamin Sheinfux , Jan Grinberg , Uri Shimoni
IPC分类号： G01T1/164 , G01T1/20
CPC分类号： G01T1/1645
摘要： A gamma-ray camera is described including a collimator receiving and collimating the gamma rays, a converter matrix converting the gamma rays to electrons, an electron-image multiplier receiving the electrons and producing a multiplied electron output, and means for reading out the output of the electron-image multiplier.A converter matrix is described for converting gamma-rays to electrons comprising a metal plate emitting electrons upon being impinged by gamma-photons, the metal plate having a face formed with a plurality of spaced parallel surfaces which extend substantially parallel to the direction of the gamma-rays. Also described is a converter matrix of scintillation crystals, one face of each crystal including a photo-sensitive coating, the opposite face of each crystal being clear, the remaining faces of each crystal being coated with a light-reflecting coating.
摘要翻译：描述了一种伽马射线照相机，其包括：接收和准直伽马射线的准直器，将伽马射线转换为电子的转换器矩阵;接收电子并产生相乘电子输出的电子图像倍增器;以及用于读出电子图像倍增器。

2. 发明授权

US3976905A Channel electron multipliers 失效
标题翻译：通道电子倍增器
公开(公告)号：US3976905A
公开(公告)日：1976-08-24
申请号：US480683
申请日：1974-06-17
申请人： Ady Seidman , Zohar Avrahami , Benjamin Sheinfux , Jan Grinberg
发明人： Ady Seidman , Zohar Avrahami , Benjamin Sheinfux , Jan Grinberg
IPC分类号： H01J43/24 , H01J43/06 , H01J43/10
CPC分类号： H01J43/243
摘要： A channel electron multiplier is described having a tubular wall coated w a secondary-electron emitting material and including an electric field for accelerating the electrons, the electric field comprising a plurality of low-resistive conductive rings each alternating with a high-resistive insulating ring. The thickness of the low-resistive rings is many times larger than that of the high-resistive rings, being in the order of tens of microns for the low-resistive rings and at least one order of magnitude lower for the high-resistive rings; and the diameter of the channel tubular walls is also many times larger than the thickness of the high-resistive rings. Both single-channel and multiple-channel electron multipliers are described. A very important advantage, particularly in making multiple-channel multipliers, is the simplicity of the procedure that may be used in constructing such multipliers. Other operational advantages are described.
摘要翻译：描述了一种通道电子倍增器，其具有涂覆有二次电子发射材料并包括用于加速电子的电场的管状壁，该电场包括多个与高电阻绝缘环交替的低电阻导电环。低阻环的厚度比高阻环的厚度大很多倍，低阻环的数量级为几十微米，而高阻环的厚度至少要低一个数量级。并且通道管状壁的直径也比高阻环的厚度大许多倍。描述单通道和多通道电子倍增器。一个非常重要的优点，特别是在制作多通道乘法器时，可以用于构建这样的乘法器的过程的简单性。描述其他操作优点。

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