Tsai, W.C.W.C.TsaiChang, T.H.T.H.ChangChen, N.C.N.C.ChenKWO-RAY CHUSong, H.H.H.H.SongLuhmann Jr.N.C.2019-12-262019-12-262004https://scholars.lib.ntu.edu.tw/handle/123456789/440847Absolute instabilities in a high-order-mode gyrotron traveling-wave amplifierjournal article10.1103/PhysRevE.70.0564022-s2.0-41349084970https://www.scopus.com/inward/record.uri?eid=2-s2.0-41349084970&doi=10.1103%2fPhysRevE.70.056402&partnerID=40&md5=bd40119232079e5eacd66ef5c6186a5c