一种用于中性原子束的六极磁导向装置。

A hexapole magnetic guide for neutral atomic beams.

作者信息

Beardmore J P, Palmer A J, Kuiper K C, Sang R T

机构信息

Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111, Australia.

出版信息

Rev Sci Instrum. 2009 Jul;80(7):073105. doi: 10.1063/1.3176470.

DOI:10.1063/1.3176470

PMID:19655941

Abstract

In this paper we present a multiple element magnetic device to guide atoms using a spatially inhomogeneous magnetic field formed by a series of permanent hexapole magnets. The operation of the device is demonstrated using an enhanced beam of neon atoms in the 3P2 metastable state. These atoms are guided around a bend of 30 degrees from their original path. A flux of 4.35 x 10(9) +/- 2 x 10(7) atoms s(-1) was measured after the device yielding a transmission efficiency of approximately 9% of the input flux. Simulations of the center of mass motion of the atoms through the magnetic guide have been performed giving reasonable agreement with the experimental results.

摘要

在本文中，我们展示了一种多元素磁性装置，该装置利用由一系列永久六极磁体形成的空间非均匀磁场来引导原子。使用处于3P2亚稳态的增强型氖原子束演示了该装置的运行情况。这些原子被引导至偏离其原始路径30度的弯道处。在该装置之后测量到的原子通量为4.35×10⁹±2×10⁷ 个原子·秒⁻¹，传输效率约为输入通量的9%。已经对原子通过磁导的质心运动进行了模拟，模拟结果与实验结果相当吻合。