Aspects of space charge transport theory applied o electronic irradiation of dielectrics. / Aspectos da teoria de carga espacial aplicada à irradiação de dielétricos com feixes eletrônicos.
AUTOR(ES)
Luiz Nunes de Oliveira
DATA DE PUBLICAÇÃO
1975
RESUMO
Irradiation of solid dielectric with electron beams has been used as a powerful tool in investigations of charge storage and transport in such materials. The present work reviews some of the results that have been obtained in this area and discusses the formulation of a transport equation for excess charge in irradiated insulators. This equation is subsequently applied to various experimental set-ups . It is found that space charge effects p1ay an essential role in the establishment of stationary currents in samples subject to quasi- -penetrating electron beams. Such effects may, however, be neglected for low electron ranges. Theoretical results are in good agreement with experimental findings by Spear (1955).
ASSUNTO(S)
dielectrics eletretos carga espacial electrets space charge dieletricos
