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Wang Huadong, Gao Bingtian, Liu Limei, Feng Hao, Gao Xingmin, Shevchenko.O.V.. Automatic Control and Precise Filling of Alkali-Metal Gas into Glass Vesicles:A Methodological Study[J]. CHINESE JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY, 2020, 40(11): 1050-1053. DOI: 10.13922/j.cnki.cjovst.2020.11.09
Citation: Wang Huadong, Gao Bingtian, Liu Limei, Feng Hao, Gao Xingmin, Shevchenko.O.V.. Automatic Control and Precise Filling of Alkali-Metal Gas into Glass Vesicles:A Methodological Study[J]. CHINESE JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY, 2020, 40(11): 1050-1053. DOI: 10.13922/j.cnki.cjovst.2020.11.09

Automatic Control and Precise Filling of Alkali-Metal Gas into Glass Vesicles:A Methodological Study

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  • Received Date: April 08, 2020
  • Available Online: September 13, 2023
  • The non-standard equipment,dedicated to the automatically and precisely filling of alkaline metal gas into glass vesicles,was developed.Based on Maxwell distribution law of gas velocity and Langmuir evaporation/condensation theory,the self-developed equipment comprises the vacuum chamber,pumping unit,PLC controller,3 D-workpiece positioner,heater/cooler/thermostat,suppliers of ultrapure gases and etc.The lab-built equipment was tested in fabrication of rubidium vesicles.The results show that the automatic filling significantly outperforms the conventional manual filling.For instance,the proportion of vesicles filled with Rb-content of 500±100 μg increased from 35% to 73%;and the dispersion decreased from ±550 μg to ±150 μg.We suggest that the self-developed equipment be of some technological interest because of batch fabrication,high automation,easy operation and long-term reliability.
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