W-Y2O3金屬陶瓷陰極的二次發(fā)射
SOME SECONDARY EMISSION PROPERTIES OF W-Y2O3 CERMET CATHODE
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摘要: 正 大功率磁控管用的高溫陰極一般都含有放射性元素釷。但是文獻[7]談到了應(yīng)用其他發(fā)射材料(主要是稀土氧化物)的可能性。 我們用氧化釔為發(fā)射物質(zhì)研制成功了一種可用于大功率磁控管中的高溫陰極
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關(guān)鍵詞:
Abstract: Using DC and pulse retarding field methods, we have measured the effect of in-creasing primary electron energy on the secondary emission coefficient of W-Y2O3 cermet cathode at room-temperature, and the variation of the first crossover and the maximum secondary emission coefficient (max) from room-temperature to 1500℃, respectively, The secondary emission properties are getting better as the temperature of the cathode rises. max 7 at 1400℃. The experimental results obtained in magnetrons show that this kind of cathode is good to be used in high power magnetrons at high temperature. -
磁控管設(shè)計手冊,陰極及其組件的設(shè)計,電子管設(shè)計手冊編輯部.[2]QK338解剖報告(內(nèi)部資料).[3]沢田哲夫等,東芝レビエ-,15 (1962), 988.[4]鈴木太郎,東芝レビエ-,20 (1965),28.[5]鈴木太郎、巖崎賢夫,東芝レビエ-,18 (1963),990.[7]電子情報,熱電子陰極,1974年,第12期,第1頁.[8]畢建明、王光運等,氧化釔金屬陶瓷陰極研制報告(內(nèi)部資料). -
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