Surface Charge Accumulation of DC-GIS Spacer Shimakawa, Hajime ; Kumada, Akiko ; Hidaka, Kunihiko ; Yasuoka, Takanori ; Hoshina, Yoshikazu ; Shiiki, Motoharu Abstract Publication: IEEJ Transactions on Power and Energy Pub Date: June 2020 DOI: 10.1541/ieejpes.140.548 Bibcode: 2020IJTPE.140..548S