@article{oai:niigata-u.repo.nii.ac.jp:00002070,
 author = {Oe, Hiroaki and Ogura, Kazuo and Kazahari, Yusuke and Bansho, Kiyoshi and Iizuka, Hiroshi and Sugawara, Akira and Kim, W.S.},
 journal = {Journal of Plasma and Fusion Research Series, Journal of Plasma and Fusion Research Series},
 month = {Jan},
 note = {We study a disk cathode in the weakly relativistic region less than 100 kV by comparing the conventional　tubular cathode. The disk cathode is an explosive electron emission cathode made of bare metal. The beam　generated by the disk cathode has the more uniform distribution and has the higher current density compared with　the tubular cathode with velvet. For the uniform emission, some surface roughness of 1 ����m order is required on the　emission surface. Metals such as aluminum, copper and stainless steel are tested as the cathode. Up to now, the best　result is obtained by a copper cathode. In view of application to the weakly relativistic oversized backward wave　oscillator, the disk cathode is superior to the tubular cathode and is effective for the high-power operation.},
 pages = {1477--1482},
 title = {Experimental Study on Disk Type Cold Cathode in Weakly Relativistic Energy Region},
 volume = {8},
 year = {2009}
}