Manipulating hydrogen atoms using permanent magnets: Characterisation of a velocity-filtering guide.
Manipulating hydrogen atoms using permanent magnets: Characterisation of a velocity-filtering guide.
复制标题
使用永磁体操纵氢原子：速度过滤指南的表征。
DOI：
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发表时间：
2019
影响因子：
1.6
通讯作者：
B. R. Heazlewood
中科院分区：
文献类型：
--
作者：
J. Toscano;M. Hejduk;H. McGhee;B. R. Heazlewood
一个由12个六极结构的永磁体组成的哈尔巴赫阵列被用来在氢原子离开塞曼减速器时偏转氢原子。优先操纵H原子的能力是非常有用的，因为目前很少有技术适合从前体分子（如氢分子或氨分子）、种子气体和其他污染物中纯化一束H原子。当单个哈尔巴赫阵列倾斜或偏离主光束轴时，氢原子偏转的程度通过实验表征，并借助简单的数学模型进行解释。随后引入了一个自由基光束过滤器，其中四个串联排列的哈尔巴赫阵列用于偏转氢原子，使其远离主光束轴和掠光叶片周围；入射光束的所有其他部分都被叶片阻挡，因此不能通过磁导器传输。通过实验测量和详细的模拟，该波导的特性证实了它是一种高效的光束过滤器——成功地产生了纯的、速度选择的H原子光束。
A Halbach array composed of 12 permanent magnets in a hexapole configuration is employed to deflect hydrogen atoms as they exit a Zeeman decelerator. The ability to preferentially manipulate H atoms is very useful, as there are currently very few techniques that are appropriate for purifying a beam of H atoms from precursor molecules (such as molecular hydrogen or ammonia), seed gases, and other contaminant species. The extent to which hydrogen atoms are deflected by a single Halbach array when it is tilted or shifted off the main beam axis is characterised experimentally and interpreted with the aid of a simple mathematical model. A radical beam filter is subsequently introduced, where four Halbach arrays arranged in series serve to deflect H atoms away from the main beam axis and around skimming blades; all other components of the incoming beam are blocked by the blades and are thus not transmitted through the magnetic guide. The properties of the guide, as established by experimental measurements and complemented by detailed simulations, confirm that it is a highly effective beam filter-successfully generating a pure and velocity-selected beam of H atoms.
DOI：
10.1063/1.4866906
发表时间：
2014
期刊：
The Journal of chemical physics
影响因子：
--
作者：
Dulitz K
通讯作者：
Dulitz K
DOI：
10.1140/epjd/e2015-60454-3
发表时间：
2016
期刊：
The European Physical Journal D
影响因子：
--
作者：
Dulitz K
通讯作者：
Dulitz K