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

Volume

24

Issue

6

fYear

1989

fDate

12/1/1989 12:00:00 AM

Firstpage

1183

Lastpage

1190

Abstract

The interaction of fission fragments with electron-beam-charged polyfluoroethylene propylene (FEP) produces a detectable signal characteristic of the event. Both an electrical signal and luminescence were observed. Fission of ²³⁵U by thermal neutrons produces fission fragments with energies of 60 to 100 MeV that deposit their energy in 14 to 20 μm of FEP. Aluminized FEP with a thickness of 25.4 μm was charged to 10^-7 C/cm² and exposed to fission fragments. They produced electrical pulses from charges of ~10 ^-16 C that were induced on the electrodes. Uncoated electrets emitted a flash of light when struck by a fission fragment. Both phenomena were transient in that aging or annealing of the electret eliminated the signal. The size and transient nature of the electrical signal be explained by a charge-intersection model for the interaction of the ions

Keywords

energy loss of particles; ion beam effects; ionoluminescence; luminescence of organic solids; polymers; 14 to 20 micron; 60 to 100 MeV; aging; annealing; charge-intersection model; electrical signal; electron-beam charged polyfluoroethylene propylene; fission fragments; luminescence; thermal neutrons; uncoated electrets; Aging; Annealing; Charge carriers; Electrets; Electrodes; Event detection; Kinetic energy; Luminescence; Monitoring; Neutrons;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.46353

Filename

46353