公开(公告)号：US5025162A

公开(公告)日：1991-06-18

申请号：US514437

申请日：1990-04-25

Applicant: Georges Charpak

Inventor： Georges Charpak

IPC: G01T1/29 ,  H01J47/26

CPC classification number: H01J47/26 ,  G01T1/2935

Abstract: A method and device are disclosed for determining the distribution of the .beta. rays emerging from a surface. The device comprises an enclosure (3) filled with a gas mixture having a first preamplification chamber (6) between two grids (9 and 10), a second transfer chamber (7) between two grids (10 and (11) and a third multiplication chamber (8) between two grids (11 and 12); as well as three DC voltage sources (13, 14 15); and an impeding assembly (22, 23, 17, 18, 19, 20 and 21).

Abstract translation: 公开了一种用于确定从表面出射的β射线的分布的方法和装置。 所述装置包括填充有气体混合物的外壳（3），所述气体混合物具有在两个格栅（9和10）之间的第一前置放大室（6），在两个格栅（10和（11）之间的第二传递室） 两个格栅（11和12）之间的腔室（8）;以及三个直流电压源（13,145）;以及阻挡组件（22,23,17,18,19,20和21）。

公开(公告)号：US4527064A

公开(公告)日：1985-07-02

申请号：US510388

申请日：1983-07-05

Applicant: David F. Anderson

Inventor： David F. Anderson

IPC: H01J47/26 ,  H01J47/10

CPC classification number: H01J47/26

Abstract: A method and apparatus for detecting and imaging alpha particles sources is described. A conducting coated high voltage electrode (1) and a tungsten wire grid (2) constitute a diode configuration discharge generator for electrons dislodged from atoms or molecules located in between these electrodes when struck by alpha particles from a source (3) to be quantitatively or qualitatively analyzed. A thin polyester film window (4) allows the alpha particles to pass into the gas enclosure and the combination of the glass electrode, grid and window is light transparent such that the details of the source which is imaged with high resolution and sensitivity by the sparks produced can be observed visually as well. The source can be viewed directly, electronically counted or integrated over time using photographic methods. A significant increase in sensitivity over other alpha particle detectors is observed, and the device has very low sensitivity to gamma or beta emissions which might otherwise appear as noise on the alpha particle signal.

Abstract translation: 描述了用于检测和成像α粒子源的方法和装置。 导电涂覆的高压电极（1）和钨丝网格（2）构成二极管配置放电发生器，用于当源自源（3）的α粒子被定量或定量地撞击时从位于这些电极之间的原子或分子移出的电子 定性分析。 薄聚酯薄膜窗（4）允许α粒子进入气体外壳，玻璃电极，栅格和窗口的组合是透明的，使得以高分辨率和灵敏度被火花成像的源的细节 也可以观察到所产生的。 可以使用摄影方法直接查看，电子计数或随着时间的推移进行整合。 观察到其他α粒子检测器的灵敏度显着增加，并且该装置对于γ或β发射具有非常低的灵敏度，否则这可能表现为α粒子信号上的噪声。