Gangcheng JIAO, Kaimin ZHANG, Yijun ZHANG, Xin GUO, Feng SHI, Hongchang CHENG, Lei YAN, Jingjing ZHAN. Effect of Improved 'yo-yo' Cs/O Alternate Activation Method on Stability of GaAs Photocathode[J]. Acta Photonica Sinica, 2022, 51(2): 0212001
- Acta Photonica Sinica
- Vol. 51, Issue 2, 0212001 (2022)
Fig. 1. Schematic of Cs/O on-line activation setup of GaAs photocathodes
Fig. 2. Photocurrent change curves of GaAs photocathodes with different Cs/O activation methods
Fig. 3. Decay photocurrent curves of GaAs photocathodes with different Cs/O activation methods
Fig. 4. Spectral response curves of GaAs photocathodes with different Cs/O activation methods before and after decay
Fig. 5. Components and partial pressure of residual gases at the initial moment of decay for GaAs photocathodes with different Cs/O activation methods
Fig. 6. Partial pressure variation curves of residual gases in the decay processes for GaAs photocathodes with different Cs/O activation methods
Fig. 7. Variation of photocurrent with oxygen partial pressure for GaAs photocathodes with different Cs/O activation methods
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Table 1. Activation process parameters of GaAs photocathodes with different Cs/O activation methods
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Table 2. Fitted parameters of decay curves of GaAs photocathodes with different Cs/O activation methods
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Table 3. Weight factors of influence of different residual gas components on photocurrent decay of GaAs photocathodes
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