| 复铼膜阴极的发射和表面特性 |
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| 引用本文： | 张洪来,由玉新,程永吉,王亚杰,吕庆年.复铼膜阴极的发射和表面特性[J].电子与信息学报,1990,12(4):418-423. |
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| 作者姓名： | 张洪来 由玉新 程永吉 王亚杰 吕庆年 |
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| 作者单位： | 中国科学院电子学研究所 北京
(张洪来，由玉新，程永吉，王亚杰)，中国科学院电子学研究所 北京(吕庆年) |
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| 摘 要： | 本文报道了复铼膜扩散阴极的发射和表面特性的研究结果,并与S-型阴极进行了比较。实验结果表明:S-型阴极复铼膜后,其热电子发射明显提高,且分布均匀。月极表面上主要元素的俄歇像显示Ba在复铼膜阴极表面上的分布要比在S-型阴极表面上均匀得多,Ba的低能Auger谱和XPS的研究表明:与S-型阴极相比Ba在复铼膜阴极表面上呈现更强的金属特性。这可能是S-型阴极复铼膜后发射增大的主要原因。
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| 关 键 词： | 热阴极 M-型阴极 热电子发射 阴极表面分析 |
| 收稿时间： | 1988-12-22 |
| 修稿时间： | 1989-2-5 |
EMISSION AND SURFACE CHARACTERISTICS OF A DISPENSER CATHODE COATED WITH RHENIUM |
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| Zhang Honglai,You Yuxin,Cheng Yongji,Wang Yajie,Lu Qingnian.EMISSION AND SURFACE CHARACTERISTICS OF A DISPENSER CATHODE COATED WITH RHENIUM[J].Journal of Electronics & Information Technology,1990,12(4):418-423. |
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| Authors: | Zhang Honglai You Yuxin Cheng Yongji Wang Yajie Lu Qingnian |
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| Affiliation: | Institute of Electronics Academia Sinica Beijing |
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| Abstract: | The emission and surface characteristics of a dispenser cathode coaled with Re are studied. It is found that the dispenser cathode coated with Re has both higher current density and more uniform distribution of emission than the S type cathode. The Auger images of Ba show tha: the Ba distribution on the surface of the cathode coated with Re is more uniform than that on the surface of the S type cathode. The analytical results by XPS and low energy AES show that the Ba on the surface of the cathode coated with Re has stronger metallic properly than that on the surface of the S type cathode. |
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| Keywords: | Thermionic cathode M type cataode Thermionic emission Cathode surface analysis |
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