一種貯存式氧化物陰極
A Reservoir Oxide Cathode
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摘要: 該文論述了一種新的貯存式氧化物陰極。這種陰極的直流發(fā)射、脈沖發(fā)射和陰極壽命性能都比普通氧化物陰極好。文中對陰極發(fā)射材料的形貌、貯存活性物質(zhì)的結(jié)構(gòu)進行了分析，觀察了陰極鎳網(wǎng)表面電子發(fā)射圖像，討論了陰極發(fā)射機理。
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關(guān)鍵詞:
- 氧化物陰極; 貯存活性物質(zhì); 發(fā)射電流; 陰極壽命
Abstract: A new kind of reservoir oxide cathode is presented in this paper. The characteristics of the cathode, such as, DC and PC emission, resistance to poisoning and lifetime, are better than those of conventional oxide cathode under same conditions. The SEM of the surface emission material and the XRD of the reservoir active material of the cathode are analyzed, and the THEM (Thermionic Electronic Emission Microscopy) of the Ni-net surface of the cathode is observed, based on which the emission mechanism of the cathode is discussed. -
Liao Xianheng, Wang Xiaoxia, Zhao Qinglan, et al.. A review of oxide cathode research in IECAS. IVESC2004, Beijing, 2004: 107.[2]劉學(xué)愨. 陰極電子學(xué). 北京: 科學(xué)出版社, 1980, 第一章.[3]Takao Sawada. High current density oxide cathode for CRTs. IVESC2004, Beijing, 2004: 104-106.[4]Kiyoshi Saitoh, Ryo Suzuki, et al.. Cathode-ray tube having oxide cathode and method for producing the same, U.S.Patent.6376976, 2002.9.[5]О.Ю.馬斯林尼柯夫, А. Б. 烏沙柯夫著, 祁小貞譯. 有效熱陰極(陰極的結(jié)構(gòu)與制備工藝), 第二部, 莫斯科技術(shù)物理學(xué)院教學(xué)部, 2003, 第1章.[6]王小霞, 廖顯恒, 羅積潤等. 鋁酸鹽結(jié)構(gòu)對陰極發(fā)射性能影響的研究[J].電子與信息學(xué)報.2003, 25(1):131-134瀏覽[7]張恩虬. 關(guān)于熱電子發(fā)射理論的評述(Ⅲ)動態(tài)表面發(fā)射中心.物理學(xué)報. 1976, 25(1): 24-30. -
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