公开(公告)号：US5663567A

公开(公告)日：1997-09-02

申请号：US657744

申请日：1996-05-31

申请人： Peter Steadman ,  Duncan W. MacArthur

发明人： Peter Steadman ,  Duncan W. MacArthur

IPC分类号： G01T1/18

CPC分类号： G01T1/18

摘要： An electrostatic alpha radiation detector for measuring alpha radiation emitted from inside an enclosure comprising an electrically conductive expandable electrode for insertion into the enclosure. After insertion, the electrically conductive expandable electrode is insulated from the enclosure and defines a decay cavity between the electrically conductive expandable electrode and the enclosure so that air ions generated in the decay cavity are electrostatically captured by the electrically conductive expandable electrode and the enclosure when an electric potential is applied between the electrically conductive expandable electrode and the enclosure. Indicator means are attached to the electrically conductive expandable electrode for indicating an electrical current produced by generation of the air ions generated in the decay cavity by collisions between air molecules and the alpha particles emitted from the enclosure. A voltage source is connected between the indicator means and the electrically conductive enclosure for creating an electric field between the electrically conductive expandable electrode and the enclosure.

摘要翻译： 一种用于测量从外壳内部发射的α辐射的静电α辐射检测器，包括用于插入外壳的导电可扩张电极。 在插入之后，导电可膨胀电极与外壳绝缘，并且在导电的可扩张电极和外壳之间限定了衰减空腔，使得在衰减空腔中产生的空气离子被导电的可扩张电极和外壳静电捕获，当 在导电性可扩张电极和外壳之间施加电位。 指示装置连接到导电可膨胀电极，用于指示由空气分子与从外壳发射的α粒子之间的碰撞产生在衰变腔中产生的空气离子产生的电流。 电压源连接在指示器装置和导电外壳之间，用于在导电可扩张电极和外壳之间产生电场。