Verification of transient RIC in polyethylene using numerical methods

Author

Hodyr, K. ; Wysocki, S.

Author_Institution

Inst. of Appl. Radiat. Chem., Tech. Univ. Lodz, Poland

Volume

7

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

193

Lastpage

196

Abstract

Current transients in radiation induced conductivity (RIC) of low-density polyethylene (LDPE) exposed to 17 ns bremsstrahlung pulses were studied. Three models of the RIC relaxation, to 30 μs after the pulse, have been tested numerically. Strong influence of the measuring circuit on the experimental results was taken into consideration. Verification shows that the RIC relaxation immediately after the excitation consists of the combination of at least two exponential components with markedly different relaxation times. This supports our thesis, that the charge transport in LDPE during the 30 μs period after the RIC excitation by means of bremsstrahlung is occurring in the conduction band as a shallow-trap-limited, nondispersive current

Keywords

bremsstrahlung; electrical conductivity; polyethylene insulation; LDPE; RIC relaxation; bremsstrahlung pulse; charge transport; current transient; low-density polyethylene; numerical method; radiation induced conductivity; Circuit testing; Conductivity; Delay; Electrons; Helium; Polyethylene; Polymers; Pulse amplifiers; Pulse measurements; RLC circuits;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.841808

Filename

841808