Title :
Electret radiation dosimeter with grid-control
Author :
Wang, Zhen-Zhong ; Xu, Ci-Zhong ; Sun, Xi-Min
Author_Institution :
Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China
Abstract :
A method to enlarge the range and improve the sensitivity of electret radiation dosimeters (ERD) is discussed. A grid mesh near the sample surface has been introduced between the front electrode and the electret sample. The polytetrafluoroethylene (PTFE) sample is negatively corona charged in the range 160-170°C. The surface voltage of the foil is -1000 V. A radiation dose of several tens of R is measured with an ERDG (electret radiation dosimeter with grid-control). The radiation charge is also measured, and the expected surface potential is obtained
Keywords :
dosimetry; electrets; surface potential; PTFE; corona charging; electret ionisation chamber; electret radiation dosimeter; grid-control; polymer foil; polytetrafluoroethylene; radiation charge; range enlargement; sensitivity; surface potential; Aluminum; Corona; Electrets; Electrodes; Electromagnetic radiation; Ionization; Physics; Solid state circuits; Sun; Voltage;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38638
