Title :
The interaction of fission fragments with electron beam charged polyfluoroethylene propylene
Author :
Berggren, Stephen R. ; John, George
Author_Institution :
US Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA
Abstract :
Interactions of fission fragments with charged polyfluoroethylene propylene (FEP) create detectable electrical signals characteristic of the event. FEP charged with 30-50-keV electrons can attain internal electrostatic fields that approach the dielectric strength. Fission of 235U by thermal neutrons produces fission fragments with energies of 60-100 MeV that deposit their energy in 20-40 μm of FEP. This induces charge-pair production and a temporary radiation-induced conduction path detectable with conventional radiation detection electronics. The exact mechanisms and characteristics of the phenomena are being investigated for possible use in small, simple, self-powered thermal neutron detectors
Keywords :
electrets; electron beam effects; fission of uranium; fission products; particle detectors; polymers; charge-pair production; dielectric strength; electret; electrically charged polymer; fission fragments; polyfluoroethylene propylene; thermal neutron detectors; Conductivity; Electrets; Electron beams; Electrostatics; Equations; Ionization; Neutrons; Postal services; Radiation detectors; Signal detection;
Conference_Titel :
Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)
Conference_Location :
Oxford
DOI :
10.1109/ISE.1988.38544
