Evaporative Cooling of Antiprotons to Cryogenic Temperatures
Evaporative Cooling of Antiprotons to Cryogenic Temperatures
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DOI：
10.1103/physrevlett.105.013003
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发表时间：
2010-07-02
影响因子：
8.6
通讯作者：
Yamazaki, Y.
中科院分区：
文献类型：
--
作者：
Andresen, G. B.;Ashkezari, M. D.;Yamazaki, Y.
我们报道了蒸发冷却技术在捕获反质子云中的应用，产生了测量温度低至9K的等离子体。我们用合适的速率方程模拟了带电粒子的蒸发过程。实验结果与理论吻合较好，为今后的实验研究提供了理论依据。这项技术为冷却囚禁离子开辟了新的可能性，并对反质子物理学特别感兴趣，在反质子物理学中，对囚禁反氢进行精确的CPT测试是一个长期的目标。
We report the application of evaporative cooling to clouds of trapped antiprotons, resulting in plasmas with measured temperature as low as 9 K. We have modeled the evaporation process for charged particles using appropriate rate equations. Good agreement between experiment and theory is observed, permitting prediction of cooling efficiency in future experiments. The technique opens up new possibilities for cooling of trapped ions and is of particular interest in antiproton physics, where a precise CPT test on trapped antihydrogen is a long-standing goal.