摘要
用XPS,APES和ARPES分析技术综合探测了钡钨阴极(包括铝酸盐、钨酸盐和钪酸盐阴极)的表面化学,获得了一些新的结果。实验表明:阴极表面光电子谱峰的形貌特征与阴极的激活状态呈对应的关系;激活后钡钨阴极表面的钨是单一金属态,钡呈现氧化态。
The dispenser cathodes are investigated by using modern surface analysistechniques (XPS, APES and ARPES). The surface chemistry and emission properties of the dispenser cathodes activated in situ are obtained, and the experimental results are discussed.
关键词
钡钨阴极
化学位移
能差
光电子谱
Dispenser cathode
Chemical shift
Auger-photoelectron energy separa-tion
Angle resolved photoelectron spectroscopy
