Measurement of vacuum pressure with a magneto-optical trap: A pressure-rise method.
Measurement of vacuum pressure with a magneto-optical trap: A pressure-rise method.
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用磁光阱测量真空压力：一种压力上升方法。
DOI：
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发表时间：
2014
影响因子：
1.6
通讯作者：
D. Cassettari
中科院分区：
文献类型：
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作者：
Rowan W G Moore;L. Lee;Elizabeth Findlay;L. Torralbo;G. Bruce;D. Cassettari
原子阱的寿命通常受到真空室中存在的残余背景气体的限制。这导致寿命与压力成反比。在这里，我们使用这种依赖性来估计压力，并获得压力上升率曲线，这是真空科学中常用的评估系统的性能。我们观察到不同的速率的压力增加，在我们的系统中的不同水平的放气。因此，我们认为，这是一个敏感的方法，将发现有用的应用在冷原子系统中，特别是，包括一个标准的真空计是不切实际的。
The lifetime of an atom trap is often limited by the presence of residual background gases in the vacuum chamber. This leads to the lifetime being inversely proportional to the pressure. Here, we use this dependence to estimate the pressure and to obtain pressure rate-of-rise curves, which are commonly used in vacuum science to evaluate the performance of a system. We observe different rates of pressure increase in response to different levels of outgassing in our system. Therefore, we suggest that this is a sensitive method which will find useful applications in cold atom systems, in particular, where the inclusion of a standard vacuum gauge is impractical.