Yaping Zhang, Shaoyu Zhang, Lian Liu, Xun Shu, Jincheng Kong, Shichun Xu, Dongmei Xu, Xiaodan Gong, Jie Qiu. Effect of part surface passivation on Dewar outgassing rate[J]. Infrared and Laser Engineering, 2021, 50(5): 20200321
- Infrared and Laser Engineering
- Vol. 50, Issue 5, 20200321 (2021)
Fig. 1. Effect of Dewar internal pressure on Dewar heat leakage
Fig. 2. Effect of Dewar heat leakage on the K562S (@23 ℃ & 150 K)
Fig. 3. Effect of Dewar internal pressure on cool down time
Fig. 4. Pumping law of common vacuum system
Fig. 5. Process of adsorption，diffusion and desorption of gas molecule in Dewar
Fig. 6. Structural sketch of passivation barrier layer
Fig. 7. Passivation treatment scheme for Dewar inner surface
Fig. 8. Testing Dewar pressure by warming-up method
Fig. 9. Effect of passivation treatment on Dewar outgassing rate
Fig. 10. Effect of passivation treatment on Dewar H2 gas composition
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