Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap

doi:10.1088/1674-1056/27/7/073701

中国物理B ›› 2018, Vol. 27 ›› Issue (7): 73701-073701.doi: 10.1088/1674-1056/27/7/073701

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap

Jing-feng Xiang(项静峰), He-nan Cheng(程鹤楠), Xiang-kai Peng(彭向凯), Xin-wen Wang(王新文), Wei Ren(任伟), Jing-wei Ji(吉经纬), Kang-kang Liu(刘亢亢), Jian-bo Zhao(赵剑波), Lin Li(李琳), Qiu-zhi Qu(屈求智), Tang Li(李唐), Bin Wang(汪斌), Mei-feng Ye(叶美凤), Xin Zhao(赵鑫), Yuan-yuan Yao(姚媛媛), De-Sheng Lü(吕德胜), Liang Liu(刘亮)

1 Key Laboratory of Quantum Optics and Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2018-03-26 修回日期:2018-04-23 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: De-Sheng Lü, Liang Liu E-mail:dslv@siom.ac.cn;liang.liu@siom.ac.cn
基金资助:
Project supported by the Ministry of Science and Technology of China (Grant No. 2013YQ09094304).

Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap

Jing-feng Xiang(项静峰)^1,2, He-nan Cheng(程鹤楠)^1,2, Xiang-kai Peng(彭向凯)^1,2, Xin-wen Wang(王新文)^1,2, Wei Ren(任伟)¹, Jing-wei Ji(吉经纬)¹, Kang-kang Liu(刘亢亢)¹, Jian-bo Zhao(赵剑波)¹, Lin Li(李琳)¹, Qiu-zhi Qu(屈求智)¹, Tang Li(李唐)¹, Bin Wang(汪斌)¹, Mei-feng Ye(叶美凤)¹, Xin Zhao(赵鑫)¹, Yuan-yuan Yao(姚媛媛)¹, De-Sheng Lü(吕德胜)¹, Liang Liu(刘亮)¹

1 Key Laboratory of Quantum Optics and Center of Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-03-26 Revised:2018-04-23 Online:2018-07-05 Published:2018-07-05
Contact: De-Sheng Lü, Liang Liu E-mail:dslv@siom.ac.cn;liang.liu@siom.ac.cn
Supported by:
Project supported by the Ministry of Science and Technology of China (Grant No. 2013YQ09094304).

摘要/Abstract

摘要：

The loss rate of cold atoms in a trap due to residual gas collisions differs from that in a free state after the cold atoms are released from the trap. In this paper, the loss rate in a cold rubidium-87 atom cloud was measured in a magneto-optical trap (MOT) and during its free flight. The residual gas pressure was analyzed by a residual gas analyzer, and the pressure distribution in a vacuum chamber was numerically calculated by the angular coefficient method. The decay factor, which describes the decay behavior of cold atoms due to residual gas collisions during a free flight, was calculated. It was found that the decay factor agrees well with theoretical predictions under various vacuum conditions.

关键词: atom traps, atomic and molecular collision, residual gas

Abstract:

Key words: atom traps, atomic and molecular collision, residual gas

中图分类号: (Atom traps and guides)

37.10.Gh

34.50.Cx (Elastic; ultracold collisions) 07.30.Bx (Degasification, residual gas)

项静峰, 程鹤楠, 彭向凯, 王新文, 任伟, 吉经纬, 刘亢亢, 赵剑波, 李琳, 屈求智, 李唐, 汪斌, 叶美凤, 赵鑫, 姚媛媛, 吕德胜, 刘亮. Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap[J]. 中国物理B, 2018, 27(7): 73701-073701.

参考文献 35

[1]	Monroe C, Swann W, Robinson H and Wieman C 1990 Phys. Rev. Lett. 65 1571
[2]	Lindquist K, Stephens M and Wieman C 1992 Phys. Rev. A 46 4082
[3]	Santarelli G, Laurent Ph, Lemonde P, Clairon A, Mann A G, Chang S, Luiten A N and Salomon C 1999 Phys. Rev. Lett. 82 4619
[4]	Ramsey N F 1950 Phys. Rev. 78 695
[5]	Wang Q, Lin Y G, Li Y, Lin B K, Meng F, Zang E J, Li T C and Fang Z J 2014 Chin. Phys. Lett. 31 123201
[6]	Li W F, Du J J, Wen R J, Li G and Zhang T C 2015 Chin. Phys. Lett. 32 104210
[7]	Zhang F, Long Y, Yang J L, Ma G Q, Yin J P and Wang R Q 2015 Chin. Phys. Lett. 32 123701
[8]	Raab E L, Prentiss M, Cable A, Chu S and Pritchard D E 1987 Phys. Rev. Lett. 59 2631
[9]	Prentiss M, Cable A, Bjorkholm J E, Chu S, Raab E L and Pritchard D E 1988 Opt. Lett. 13 452
[10]	Bjorkholm J E 1988 Phys. Rev. A 38 1599
[11]	Bali S, O'Hara K M, Gehm M E, Granade S R and Thomas J E 1999 Phys. Rev. A 60 R29
[12]	Van Dongen J, Zhu C, Clement D, Dufour G, Booth J L and Madison K W 2011 Phys. Rev. A 84 022708
[13]	Makhalov V B, Martiyanov K A and Turlapov A V 2016 Metrologia 53 1287
[14]	Simon E, Laurent P, Santarelli G, Clairon A, Lemonde P, Salomon C, Dimarcq N, Petit P, Audoin C, Gonzalez F and Changeart F J 1997 Acta Astronautica 40 837
[15]	Lü D S, Wang B, Li T and Liu L 2010 Chin. Opt. Lett. 8 735
[16]	Kulas S, Vogt C, Resch A, et al. 2017 Microgravity Science and Technology 29 37
[17]	Arpornthip T, Sackett C A and Hughes K J 2012 Phys. Rev. A 85 033420
[18]	Margenau H and Kestner N R 1971 Theory of Intermolecular Forces (New York:Pergamon Press)
[19]	Miller J D, Cline R A and Heinzen D J 1993 Phys. Rev. A 47 R4567
[20]	Vuletić V, Chin C, Kerman A J and Chu S 1998 Phys. Rev. Lett. 81 5768
[21]	Tollett J J, Bradley C C, Sackett C A and Hulet R G 1995 Phys. Rev. A 51 R22
[22]	Monroe C R, Cornell E A, Sackett C A, Myatt C J and Wieman C E 1993 Phys. Rev. Lett. 70 414
[23]	Landau L D and Lifshits E M 1977 Quantum Mechanics:Non-Relativistic Theory (Course of Theoretical Physics vol. 3) (3rd Edn.) (New York:Pergamon Press)
[24]	Child M S 1996 Molecular Collision Theory (New York:Courier Corporation)
[25]	Cambi R, Cappelletti D, Liuti G and Pirani F 1991 The Journal of Chemical Physics 95 1852
[26]	Koutselos A D and Mason E A 1986 The Journal of Chemical Physics 85 2154
[27]	Ren W, Gao Y C, Li T, Lü D S and Liu L 2016 Chin. Phys. B 25 060601
[28]	Ren W, Xiang J F, Zhang Y T, Wang B, Qu Q Z, Zhao J B, Ye M F, Lü D S and Liu L 2015 Vacuum 116 54
[29]	Qu Q Z, Wang B, Lü D S, Zhao J B, Ye M F, Ren W, Xiang J F and Liu L 2015 Chin. Opt. Lett. 13 061405
[30]	Wang B, Lü D S, Qu Q Z, Zhao J B, Li T, Liu L and Wang Y Z 2011 Chin. Phys. Lett. 28 063701
[31]	Lü D S, Qu Q Z, Wang B, Zhao J B, Liu L and Wang Y Z 2011 Chin. Phys. Lett. 28 063201
[32]	Li L, Qu Q Z, Wang B, Li T, Zhao J B, Ji J W, Ren W, Zhao X, Ye M F, Yao Y Y, Lü D S and Liu L 2016 Chin. Phys. Lett. 33 063201
[33]	Haw M, Evetts N, Gunton W, Van Dongen J, Booth J L and Madison K W 2012 J. Opt. Soc. Am. B 29 475
[34]	Gensemer S D, Sanchez-Villicana V, Tan K Y N, Grove T T and Gould P L 1997 Phys. Rev. A 56 4055
[35]	Yuan J P, Ji Z H, Zhao Y T, Chang X F, Xiao L T and Jia S T 2013 Appl. Opt. 52 6195

Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap

Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap

RichHTML

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 35

相关文章 7

Metrics

本文评价

推荐阅读 0

[1]	王金婵. Residual gas properties in field emission device with ZnO emitters[J]. 中国物理B, 2013, 22(6): 68504-068504.
[2]	施德恒, 孙金锋, 朱遵略, 刘玉芳, 杨向东. A modification potential method of calculating total cross sections of electrons scattering from complex molecules C₂H₆, C₂F₆,C₆H₆ and C₆F₆ at 100eV--5000eV[J]. 中国物理B, 2006, 15(6): 1278-1283.
[3]	施德恒, 孙金锋, 杨向东, 朱遵略, 刘玉芳. Ab initio calculation on the analytic potential energy functions for the state a³Σ⁺_u and the state b³Π_u of spin-aligned trimer ³Li₂[J]. 中国物理B, 2005, 14(8): 1566-1570.
[4]	施德恒, 刘玉芳, 孙金锋, 朱遵略, 杨向东. Positron total cross sections for collisions with O₂, H₂O and CH₄ in energy range from 30 to 3000eV[J]. 中国物理B, 2005, 14(5): 964-968.
[5]	施德恒, 刘玉芳, 孙金锋, 杨向东, 朱遵略. Total cross sections for electrons scattering from simple molecules containing the larger atom sulfur at 30--5000eV[J]. 中国物理B, 2005, 14(11): 2208-2213.
[6]	施德恒, 孙金锋, 朱遵略, 刘玉芳. A modification potential method for electron scattering total cross section calculations on several molecules at 30-5000eV[J]. 中国物理B, 2005, 14(1): 120-127.
[7]	施德恒, 孔金锋, 杨向东, 朱遵略, 刘玉芳. Total cross sections for scattering of electrons from O₂, H₂O, H₂, O₃, CO and CO₂ at 100－2000eV[J]. 中国物理B, 2004, 13(7): 1018-1024.