Three-dimensional hexapole focusing of pulsed molecular beam for state selection

doi:10.1088/1674-1056/26/8/083701

中国物理B ›› 2017, Vol. 26 ›› Issue (8): 83701-083701.doi: 10.1088/1674-1056/26/8/083701

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Three-dimensional hexapole focusing of pulsed molecular beam for state selection

Yi Ke(柯毅), Xiao-Bing Deng(邓小兵), Zhong-Kun Hu(胡忠坤)

Key Laboratory of Fundamental Physical Quantities Measurements, Ministry of Education, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

收稿日期:2017-02-22 修回日期:2017-04-26 出版日期:2017-08-05 发布日期:2017-08-05
通讯作者: Zhong-Kun Hu E-mail:zkhu@hust.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11504118, 11574099, and 11474115).

Three-dimensional hexapole focusing of pulsed molecular beam for state selection

Yi Ke(柯毅), Xiao-Bing Deng(邓小兵), Zhong-Kun Hu(胡忠坤)

Key Laboratory of Fundamental Physical Quantities Measurements, Ministry of Education, School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

Received:2017-02-22 Revised:2017-04-26 Online:2017-08-05 Published:2017-08-05
Contact: Zhong-Kun Hu E-mail:zkhu@hust.edu.cn
About author:0.1088/1674-1056/26/8/
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11504118, 11574099, and 11474115).

摘要/Abstract

摘要：

We theoretically investigate three-dimensional (3D) focusing of pulsed molecular beam using a series of hexapoles with different orientations. Transversely oriented hexapoles provide both the transverse and longitudinal focusing force and a longitudinally oriented one provides only the transverse force. The hexapole focusing position are designed to realize the simultaneous focusing in three directions. The additional longitudinal focusing compared with the conventional hexapole can suppress the effect of chromatic aberration induced by the molecular longitudinal velocity spread, thus improving the state-selection purity as well as the beam density. Performance comparison of state selection between this 3D focusing hexapole and a conventional one is made using numerical trajectory simulations, choosing CHF₃ molecules as a tester. It is confirmed that our proposal can improve the state-selection purity from 68.2% to 96.1% and the beam density by a factor of 2.3.

关键词: hexapole, focusing, state selection, chromatic aberration

Abstract:

Key words: hexapole, focusing, state selection, chromatic aberration

中图分类号: (Atomic and molecular beam sources and techniques)

37.20.+j

柯毅, 邓小兵, 胡忠坤. Three-dimensional hexapole focusing of pulsed molecular beam for state selection[J]. 中国物理B, 2017, 26(8): 83701-083701.

Yi Ke(柯毅), Xiao-Bing Deng(邓小兵), Zhong-Kun Hu(胡忠坤). Three-dimensional hexapole focusing of pulsed molecular beam for state selection[J]. Chin. Phys. B, 2017, 26(8): 83701-083701.

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Three-dimensional hexapole focusing of pulsed molecular beam for state selection

Three-dimensional hexapole focusing of pulsed molecular beam for state selection

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