2024-03-29T08:43:27Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002537
2022-12-15T03:35:43Z
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Experimental Study on Performance of Slow Cyclotron Maser in Weakly Relativistic Region
Bansho, Kiyoshi
Ogura, Kazuo
Oe, Hiroaki
Kazahari, Yusuke
Iizuka, Hiroshi
Sugawara, Akira
Shimozuma, Takashi
Kobayashi, Sakuji
Okada, Kohji
一般社団法人プラズマ・核融合学会
slow cyclotron maser
Cherenkov interaction
weakly relativistic beam
periodic corrugation
slowwave device
Studies of slow cyclotron maser operation of a slow-wave device are presented. The beam voltage is weakly relativistic, less than 100 kV. The slow-wave structure is a periodically corrugated oversized waveguide for K-band operation. When using rectangular corrugation having a relatively small ratio of corrugation width to periodic length of about 20 %, the dispersion curve near the upper cut-off becomes flat and second harmonic slow cyclotron maser operation is observed in the low-energy region near 30 kV. Another type of combined resonance of Cherenkov and slow cyclotron interaction is also demonstrated in which an absolute instability is driven by the slow cyclotron interaction. By using sinusoidal corrugation and rectangular corrugation having a 50 % ratio of corrugation width to periodic length, amplification effects due to the fundamental and second harmonic slow cyclotron interactions are observed.
Japan Society of Plasma Science and Nuclear Fusion Research
2010-01
eng
journal article
VoR
http://hdl.handle.net/10191/21863
https://niigata-u.repo.nii.ac.jp/records/2537
http://doi.org/10.1585/pfr.5.s1049
https://www.jstage.jst.go.jp/browse/pfr
AA12346675
1880-6821
Plasma and Fusion Research
5
S1049-1
S1049-6
https://niigata-u.repo.nii.ac.jp/record/2537/files/5_S1049.pdf
application/pdf
2.3 MB
2019-07-29