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深空探测学报(中英文）

Exploration of Microgravity by Using the Cold Atom Interferometer in Deep Space Environment

Xuanhui Lu, Zeng Daji, Xian Zhang, Kaikai Huang

Published Feb 1, 2017• 0 citations
Publisher

Abstract

The fundamental principle of atom interferometer and the advantages of atom gravimeter in microgravity environment are introduced and the present research status and potential applications of atom gravimeters in microgravity environment are described. Compared with other gravimeters, the atomic interference gravimeter becomes a good choice for deep space gravitational field measurement, and the deep space microgravity environment can effectively prolong the interference time of the atomic interferometer and improve the gravimeter sensitivity.

DOI
10.15982/j.issn.2095-7777.2017.01.003

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Abstract Microgravity platforms enable cold atom research beyond experiments in typical laboratories by removing restrictions due to the gravitational acceleration or compensation techniques. While research in space allows for undisturbed experimentation, technological readiness, availability and accessibility present challenges for experimental operation. In this work we focus on the main capabilities and unique features of ground-based microgravity facilities for cold atom research. A selection of current and future scientific opportunities and their high demands on the microgravity environment are presented, and some relevant ground-based facilities are discussed and compared. Specifically, we point out the applicable free fall times, repetition rates, stability and payload capabilities, as well as programmatic and operational aspects of these facilities. These are contrasted with the requirements of various cold atom experiments. Besides being an accelerator for technology development, ground-based microgravity facilities allow fundamental and applied research with the additional benefit of enabling hands-on access to the experiment for modifications and adjustments.
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