2010 Fiscal Year Final Research Report

Development of surface wave oscillator in X-Band

Research Project

Project/Area Number	20760045
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Applied physics, general
Research Institution	The University of Tokyo
Principal Investigator	WATANABE Osamu The University of Tokyo, 大学院・新領域創成科学研究科, 特任研究員 (00397291)
Project Period (FY)	2008 – 2010
Keywords	電磁表面波 / 伝送モード / チェレンコフ不安定性 / スミス・パーセル型不安定性 / 周期的遅波構造
Research Abstract	An existence of an electromagnetic surface wave is confirmed experimentally and an oscillator which is using this wave is developed in X-band (oscillation frequency is controllable by beam voltage). The electromagnetic surface wave is transmission mode which is in the vicinity of the periodic slow wave structure surface (for example corrugated metal surface). The existence of this wave had been pointed out analytically. The transmission on the corrugated metal surface of its wave is confirmed by the cold test. And, the characteristic of the interaction (Cherenkov instability and Smith-Purcell type instability) between this wave and electron beam is analyzed numerically. The oscillator is developed based on these results.