Space charges induced in polymers by electron beam irradiation and their decay profiles

Tomite, Naoto; Arai, Y.; Ohki, Yoshimichi; Nakmura, Hirotaka; Hinata, Toru; Washio, Masakazu

doi:10.1109/icsd.2013.6619737

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…These positive charges, present with a non-negligible density (above 1 C m −3 ), are not due to experimental artefact. The same features have already been reported, showing positive charges measured experimentally during relaxation [5,15]. Moreover, only a bipolar charge transport model (i.e.…”

Section: Space Charge After Electron-beam Irradiationsupporting

confidence: 82%

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Polarization of electron-beam irradiated LDPE films: contribution to charge generation and transport

Banda¹,

Griseri²,

Teyssèdre³

et al. 2018

J. Phys. D: Appl. Phys.

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Electron-beam irradiation is an alternative way to generate charges in insulating materials, at controlled position and quantity, in order to monitor their behaviour in regard to transport phenomena under the space charge induced electric field or external field applied. In this study, low density polyethylene (LDPE) films were irradiated by a 80 keV electron-beam with a flux of 1 nA cm−2 during 10 min in an irradiation chamber under vacuum conditions, and were then characterized outside the chamber using three experimental methods. The electrical behaviour of the irradiated material was assessed by space charge measurements using the pulsed electro-acoustic (PEA) method under dc stress. The influence of the applied electric field polarity and amplitude has been tested in order to better understand the charge behaviour after electron-beam irradiation. Fourier transform infra-red spectroscopy (FTIR) and photoluminescence (PL) measurements were performed to evaluate the impact of the electron beam irradiation, i.e. deposited charges and energy, on the chemical structure of the irradiated samples. The present results show that the electrical behaviour in LDPE after irradiation is mostly driven by charges, i.e. by physical process functions of the electric field, and that changes in the chemical structure seems to be mild.

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Section: Space Charge After Electron-beam Irradiationsupporting

confidence: 82%

“…It should uncover the positive and negative charges generated by the e-beam. This has already been performed in other studies for polymeric materials intended to space applications [5,6].…”

Section: Introductionmentioning

confidence: 93%