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| An Experimental Study for the Double-vacuum Active Hydrogen Maser |
| WANG Wen-ming1,CHEN Xiang2,ZHANG Wei-qun2,CAI Yong2,YANG Hao2 |
1.Beijing Institute of Radio Metrology and Measurement, Beijing 100039, China;
2.Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai 200030, China |
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Abstract The recent research of SHAOs new double-vacuum- structured active hydrogen maser to achieve its miniaturization is described. Compared with SOHM-4 active hydrogen maser,its physical size and weight are substantially decreased,the magnetic sensitivity and temperature sensitivity are improved,the long-term frequency stability and day frequency drift are better than expected.
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2015, Vol. 36 
