Mixed-field effect at the hyperfine level of 127I79Br in its rovibronic ground state: Toward field manipulation of cold molecules

doi:10.1088/1674-1056/ace61c

中国物理B ›› 2023, Vol. 32 ›› Issue (12): 123302-123302.doi: 10.1088/1674-1056/ace61c

Mixed-field effect at the hyperfine level of ¹²⁷I⁷⁹Br in its rovibronic ground state: Toward field manipulation of cold molecules

Zhengbin Bao(包正斌), Defu Wang(王得富), Xuping Shao(邵旭萍)^†,Yunxia Huang(黄云霞), and Xiaohua Yang(杨晓华)^‡

School of Science, Nantong University, Nantong 226019, China

收稿日期:2023-05-04 修回日期:2023-07-05 接受日期:2023-07-11 出版日期:2023-11-14 发布日期:2023-11-22
通讯作者: Xuping Shao, Xiaohua Yang E-mail:xuping1115@ntu.edu.cn;xhyang@ntu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.12004199).

Mixed-field effect at the hyperfine level of ¹²⁷I⁷⁹Br in its rovibronic ground state: Toward field manipulation of cold molecules

Zhengbin Bao(包正斌), Defu Wang(王得富), Xuping Shao(邵旭萍)^†,Yunxia Huang(黄云霞), and Xiaohua Yang(杨晓华)^‡

School of Science, Nantong University, Nantong 226019, China

Received:2023-05-04 Revised:2023-07-05 Accepted:2023-07-11 Online:2023-11-14 Published:2023-11-22
Contact: Xuping Shao, Xiaohua Yang E-mail:xuping1115@ntu.edu.cn;xhyang@ntu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.12004199).

摘要/Abstract

摘要： The mixed-field effect at the hyperfine level of the rovibronic ground state of the ¹²⁷I⁷⁹Br (X¹Σ, v = 0, J = 0) molecule is computed on the J-I uncoupled basis of |JM_JI₁M₁I₂M₂>, where J is the molecular total angular momentum excluding nuclear spin, M_J is the projection number of J, I₁ and I₂ are the nuclear spins of the iodine and bromine atoms, and M₁ and M₂ are the projection numbers of I₁ and I₂, respectively. When the two applied electric and magnetic fields are parallel, the perturbations are rare and only one perturbation is observed in a relatively large field regime in our computation range. However, when the two fields are off-parallel, the perturbations increase significantly and some sublevels show the Feshbach-like resonance phenomenon. Therefore, such sublevels transit between weak-field seeking and strong-field seeking repeatedly, which can be utilized to enhance or suppress cold molecular collision and chemical reaction rates. Such behavior of the molecular hyperfine structure in the mixed off-parallel fields may also be utilized to construct an electric-field-assisted anti-Helmholtz magnetic trap for cold molecules and to realize evaporative cooling of cold molecules (sub-mK) into the ultracold regime (μK).

关键词: hyperfine structure, mixed Zeeman and Stark effect, evaporative cooling, IBr molecule

Abstract: The mixed-field effect at the hyperfine level of the rovibronic ground state of the ¹²⁷I⁷⁹Br (X¹Σ, v = 0, J = 0) molecule is computed on the J-I uncoupled basis of |JM_JI₁M₁I₂M₂>, where J is the molecular total angular momentum excluding nuclear spin, M_J is the projection number of J, I₁ and I₂ are the nuclear spins of the iodine and bromine atoms, and M₁ and M₂ are the projection numbers of I₁ and I₂, respectively. When the two applied electric and magnetic fields are parallel, the perturbations are rare and only one perturbation is observed in a relatively large field regime in our computation range. However, when the two fields are off-parallel, the perturbations increase significantly and some sublevels show the Feshbach-like resonance phenomenon. Therefore, such sublevels transit between weak-field seeking and strong-field seeking repeatedly, which can be utilized to enhance or suppress cold molecular collision and chemical reaction rates. Such behavior of the molecular hyperfine structure in the mixed off-parallel fields may also be utilized to construct an electric-field-assisted anti-Helmholtz magnetic trap for cold molecules and to realize evaporative cooling of cold molecules (sub-mK) into the ultracold regime (μK).

Key words: hyperfine structure, mixed Zeeman and Stark effect, evaporative cooling, IBr molecule

中图分类号: (Fine and hyperfine structure)

33.15.Pw

32.60.+i (Zeeman and Stark effects) 37.10.Mn (Slowing and cooling of molecules)

Zhengbin Bao(包正斌), Defu Wang(王得富), Xuping Shao(邵旭萍),Yunxia Huang(黄云霞), and Xiaohua Yang(杨晓华). Mixed-field effect at the hyperfine level of ¹²⁷I⁷⁹Br in its rovibronic ground state: Toward field manipulation of cold molecules[J]. 中国物理B, 2023, 32(12): 123302-123302.

参考文献

[1] Meek S A, Conrad H and Meijer G 2009 New J. Phys. 11 055024
[2] Xu L, Yin Y, Wei B, Xia Y and Yin J P 2016 Phys. Rev. A 93 013408
[3] Ni K K, Ospelkaus S, Nesbitt D J, Ye J and Jin D S 2009 Phys. Chem. Chem. Phys. 11 9626
[4] Ding S Q, Wu Y W, Finneran I A, Burau J J and Ye J 2020 Phys. Rev. X 10 021049
[5] Wang Y Y, Yin J H, Yan K, Lin Q N, Pang R J, Wang Z S, Yang T and Yin J P 2022 Acta Phys. Sin. 71 163701 (in Chinese)
[6] Ni K K, Ospelkaus S, de Miranda M H G, Pe'er A, Neyenhuis B, Zirbel J J, Kotochigova S, Julienne P S, Jin D S and Ye J 2008 Science 322 231
[7] Wu C H, Park J W, Ahmadi P, Will S and Zwierlein M W 2012 Phys. Rev. Lett. 109 085301
[8] Bruzewicz C D, Gustavsson M, Shimasaki T and Demille D 2014 New. J. Phys. 16 023018
[9] Liu L R, Hood J D, Yu Y, Zhang J T, Hutzler N R, Rosenband T and Ni K K 2018 Science 360 900
[10] Yang A, Botsi S, Kumar S, Pal S B, Lam M M, Čepaitė I and Dieckmann K 2019 Phys. Rev. Lett. 124 133203
[11] Guo M, Zhu B, Lu B, Ye X, Wang F, Vexiau R, Bouloufa-Maafa N, Quéméner G, Dulieu O and Wang D 2016 Phys. Rev. Lett. 116 205303
[12] Ospelkaus S, Ni K K, Wang D, de Miranda M H G, Neyenhuis B, Quéméner G, Julienne P S, Bohn J L, Jin D S and Ye J 2010 Science 327 853
[13] Gu Y F, Chen K, Huang Y X and Yang X H 2019 Chin. Phys. B 28 043702
[14] Chen K, Huang Y X and Yang X H 2017 Chin. J. Chem. Phys. 30 418
[15] Huang Y X, Xu S W and Yang X H 2016 J. Phys. B-At. Mol. Opt. 49 135101
[16] Wang D F, Shao X P, Huang Y X, Li C L and Yang X H 2021 Chin. Phys. B 30 113301
[17] Chen R, Shao X P, Huang Y X and Yang X H 2023 Acta Phys. Sin. 72 044301 (in Chinese)
[18] Bardeen J and Townes C H 1948 Phys. Rev. 73 97
[19] Fabricand B P, Carlson R O, Lee C A and Rabi I I 1953 Phys. Rev. 91 1403
[20] Chen K, Hu Z, Wang Q H and Yang X H 2017 Chin. Phys. Lett. 34 103302
[21] Wang Q H, Shao X P and Yang X H 2016 Chin. Phys. B 25 013301
[22] Brown J M and Carrington A 2003 Rotational spectroscopy of diatomic Molecules (Cambridge: Cambridge University Press)
[23] Aldegunde J, Rivington B A, Żuchowski P S and Hutson J M 2008 Phys. Rev. A. 78 033434
[24] Zare R N and Harter W G 1989 Phys. Today. 42 68
[25] Quéméner G and Bohn J L 2013 Phys. Rev. A. 88 012706
[26] Blackmore J A, Sawant R, Gregory P D, Bromley S L, Aldegunde J, Hutson J M and Cornish S L 2020 Phys. Rev. A 102 053316
[27] Krems R V 2018 Molecules in electromagnetic fields: from ultracold physics to controlled chemistry (John Wiley & Sons Press)
[28] Yang H, Wang X Y, Su Z, Cao J, Zhang D C, Rui J, Zhao B, Bai C L and Pan J W 2022 Nature 602 229
[29] Yang H, Zhang D C, Liu L, Liu Y X, Nan J, Zhao B and Pan J W 2019 Science 363 261
[30] Liu, Zhang D C, Yang H, Liu Y X, Nan J, Rui J, Zhao B and Pan J W 2019 Phys. Rev. Lett. 122 253201
[31] Liu Y X and Zhao B 2020 Chin. Phys. B 29 023103
[32] Wang Y F, Du H Y, Mei F, Hu Y, Xiao L T Ma J and Jia S T 2023 Light Sci, Appl. 12 50
[33] Wang Y F, Zhang J H, Li Y Q, Wu J Z, Liu W L, Mei F and Hu Y 2022 Phys. Rev. Lett. 129 103401
[34] Ospelkaus S, Ni K K, Wang D, de Miranda M H G, Neyenhuis B, Quéméner G, Julienne P S, Bohn J L, Jin D S and Ye J 2010 Science 327 853
[35] Stuhl B K, Hummon M T, Yeo M, Quéméner G, Bohn J L and Ye J 2012 Nature 492 396

Mixed-field effect at the hyperfine level of ¹²⁷I⁷⁹Br in its rovibronic ground state: Toward field manipulation of cold molecules

Mixed-field effect at the hyperfine level of ¹²⁷I⁷⁹Br in its rovibronic ground state: Toward field manipulation of cold molecules

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 13

Metrics

本文评价

推荐阅读 0

[1]	Xiao-Yong Lu(卢肖勇) and Li-De Wang(王立德). Numerical studies of isotopic selective photoionization of ytterbium in a three-step ionization scheme[J]. 中国物理B, 2023, 32(5): 53204-053204.
[2]	Zhi-Da Bai(白志达), Zhen-Xiang Zhong(钟振祥), Zong-Chao Yan(严宗朝), and Ting-Yun Shi(史庭云). Fine and hyperfine structures of pionic helium atoms[J]. 中国物理B, 2023, 32(2): 23601-023601.
[3]	Defu Wang(王得富), Xuping Shao(邵旭萍), Yunxia Huang(黄云霞), Chuanliang Li(李传亮), and Xiaohua Yang(杨晓华). Hyperfine structures and the field effects of IBr molecule in its rovibronic ground state[J]. 中国物理B, 2021, 30(11): 113301-113301.
[4]	顾跃凤, 黄云霞, 李传亮, 杨晓华. Collision of cold CaF molecules: Towards evaporative cooling[J]. 中国物理B, 2019, 28(3): 33401-033401.
[5]	王庆辉, 邵旭萍, 杨晓华. Stark effect of the hyperfine structure of ICl in its rovibronic ground state: Towards further molecular cooling[J]. 中国物理B, 2016, 25(1): 13301-013301.
[6]	孙慧, 王振霞, 王琴, 李兴佳, 刘建平, 印建平. Stark-potential evaporative cooling of polar molecules in a novel optical-access opened electrostatic trap[J]. 中国物理B, 2015, 24(11): 113101-113101.
[7]	张军海, 曾宪金, 李庆萌, 黄强, 孙伟民. Spectrally selective optical pumping in Doppler-broadened cesium atoms[J]. 中国物理B, 2013, 22(5): 53202-053202.
[8]	柯敏, 颜波, 程锋, 王育竹. Surface-induced evaporative cooling[J]. 中国物理B, 2009, 18(10): 4274-4280.
[9]	马红玉, 成华东, 王育竹, 刘亮. Light-induced evaporative cooling in a magneto-optical trap[J]. 中国物理B, 2008, 17(11): 4180-4183.
[10]	张孟, 苟秉聪. Relativistic energy, fine structure and hyperfine structure of the low-lying excited states for Be-like system[J]. 中国物理B, 2005, 14(8): 1554-1558.
[11]	马洪良. Measurement of hyperfine structure and isotope shifts in the 580.56nm line of ^{142－145,146,148,150}Nd⁺[J]. 中国物理B, 2005, 14(3): 511-515.
[12]	马洪良. Hyperfine structure of singly ionized lanthanum and praseodymium[J]. 中国物理B, 2002, 11(9): 905-909.
[13]	马洪良, 杨福家. MEASUREMENT OF HYPERFINE COUPLING CONSTANTS OF THE EXCITED STATES 4f⁷(⁸S⁰_7/2)6p_3/2(7/2, 3/2) IN ^151,153Eu⁺[J]. 中国物理B, 2001, 10(6): 512-515.