公开(公告)号：US08153959B1

公开(公告)日：2012-04-10

申请号：US12287523

申请日：2008-10-10

申请人： Lorin R. Stieff ,  Frederick Stieff

发明人： Lorin R. Stieff ,  Frederick Stieff

IPC分类号： G01V5/00

CPC分类号： G01T1/178

摘要： A passive radon surface flux monitor has a dome with an open base having a radial flange and a top opening where an electret can be threaded. Attached to and extending below the open base of the dome is a metal collar that supports the dome when placed on the ground. The collar holds a conductive screen against the radial flange. The conductive screen permits diffusion of gas including radon, thoron, and their daughter products into the dome. A thin paper diaphragm on the conductive screen prevents dust from entering the dome. Sealant seals the connection of the collar, screen, flange, and diaphragm to prevent lateral loss of radon. A collar is pressed partially into the ground at a suitable site and an electret is threaded into the top opening. After a time, the electret is removed and its change in voltage measured.

摘要翻译： 被动氡表面通量监测器具有一个具有开口底座的圆顶，其具有径向凸缘和顶部开口，驻极体可以被螺纹连接。 连接到并延伸到圆顶的开口底部的下方是放置在地面上时支撑圆顶的金属环。 轴环保持抵靠径向凸缘的导电屏蔽。 导电屏幕允许包括氡气，钍气及其子产品在内的气体扩散到圆顶中。 导电屏幕上的薄纸隔膜可防止灰尘进入圆顶。 密封胶密封环，屏幕，法兰和隔膜的连接，以防止氡的横向损失。 衣领在合适的位置被部分地压入地面，并且驻极体被拧入顶部开口中。 一段时间后，驻极体被去除，其电压变化被测量。