Study on cooling of positronium for Bose–Einstein condensation

Study on cooling of positronium for Bose–Einstein condensation
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玻色-爱因斯坦凝聚正电子素冷却研究

DOI:
10.1088/0953-4075/49/10/104001
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发表时间:
2015
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
通讯作者:
M. Kuwata
M. Kuwata
中科院分区:
--
文献类型:
--
作者:
K. Shu;Xing Fan;T. Yamazaki;Toshio Namba;S. Asai;K. Yoshioka;M. Kuwata

文献摘要

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提出的一种冷却正电子素的新方法是实现正电子素的玻色-爱因斯坦凝聚(BEC)。我们对三个过程进行了详细研究:(1) 正电子素和腔体二氧化硅壁之间的热化过程,(2) Ps-Ps 散射和 (3) 激光冷却。热化过程对于 BEC 来说是不够的。 Ps-Ps 碰撞对冷却性能有很大影响。我们将这两种方法结合起来,为 BEC 建立了高效的冷却流程。我们还提出了一种新的光学激光系统用于冷却。
A proposed new method of cooling positronium is to realize the Bose–Einstein condensation (BEC) of positronium. We perform detailed studies of three processes: (1) thermalization processes between positronium and the silica walls of a cavity, (2) Ps–Ps scattering and (3) laser cooling. The thermalization process is shown to be not sufficient for BEC. Ps–Ps collision is shown to have a big effect on the cooling performance. We combine both methods and establish an efficient cooling process for BEC. We also propose a new optical laser system for the cooling.