用于α和μ常数变化测量的碘离子光谱研究

穆秀丽; 李传亮; 邓伦华; 汪海玲

doi:10.7498/aps.66.233301

摘要

分子离子I2+的禁戒跃迁光谱有可能用于测量α和μ常数的变化，并且具有增强的灵敏度.通过分析I2+在11860–13100 cm-1范围内的转动光谱，拟合了A2Π3/2-X2Π3/2系统31个振转带的5759根吸收谱线，得到5个属于X2Π3/2态和9个属于A2Π3/2态的振动能级准确的转动光谱常数.在量子噪声极限和1 Hz跃迁线宽的条件下，计算得到X2Π3/2和X2Π1/2之间的禁戒跃迁对α和μ常数变化测量的灵敏度为δα/α ≈ 2.37×10-19a-1和δμ/μ ≈ 1.18×10-18a-1.

关键词:

Abstract

The forbidden transitions of I2+ may be used to measure the variations of α and μ constant in an enhanced sensitivity. We analyze the rotational spectrum of I2+ between 11860 and 13100 cm-1 and assign 5759 lines to 31 bands in an A2Π3/2-X2Π3/2 system. The accurate rotational molecular constants of 5 levels in X2Π3/2 state and 9 levels in A2Π3/2 state are obtained. On condition that the signal-to-noise ratio is limited by quantum projection noise and the linewidth is 1 Hz, the forbidden transition between X2Π3/2 and X2Π1/2 should be able to achieve the sensitivities of δα/α ≈ 2.37×10-19 a-1 and δμ/μ ≈ 1.18×10-18 a-1.

Keywords:

作者及机构信息

1.
华东师范大学, 精密光谱科学与技术国家重点实验室, 上海 200062;

2.
太原科技大学应用科学学院, 太原 030024

通信作者: 邓伦华, lhdeng@phy.ecnu.edu.cn;hlwang@phy.ecnu.edu.cn ; 汪海玲, lhdeng@phy.ecnu.edu.cn;hlwang@phy.ecnu.edu.cn

基金项目: 国家自然科学基金（批准号：11674096，11504256）资助的课题．

Authors and contacts

1.
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;

2.
School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China

Corresponding author: Deng Lun-Hua, lhdeng@phy.ecnu.edu.cn;hlwang@phy.ecnu.edu.cn ; Wang Hai-Ling, lhdeng@phy.ecnu.edu.cn;hlwang@phy.ecnu.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11674096, 11504256).

参考文献

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[8]	Huntemann N, Lipphardt B, Tamm C, Gerginov V, Weyers S, Peik E 2014 Phys. Rev. Lett. 113 210802
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[11]	Zhao S T, Liang G Y, Li R, Li Q N, Zhang Z G, Yan B 2017 Acta Phys. Sin. 66 063103 (in Chinese)[赵书涛, 梁桂颖, 李瑞, 李奇楠, 张志国, 闫冰 2017 物理学报 66 063103]
[12]	Huang D H, Wan M J, Wang F H, Yang J S, Cao Q L, Wang J H 2016 Acta Phys. Sin. 65 063102 (in Chinese)[黄多辉, 万明杰, 王藩侯, 杨俊升, 曹启龙, 王金花 2016 物理学报 65 063102]
[13]	Deng L H, Zhu Y Y, Li C L, Chen Y Q 2012 J. Chem. Phys. 137 054308
[14]	Shelkovnikov A, Butcher R J, Chardonnet C, Amy-Klein A 2008 Phys. Rev. Lett. 100 150801
[15]	Pasteka L F, Borschevsky A, Flambaum V V, Schwerdtfeger P 2015 Phys. Rev. A 92 012103
[16]	Tuckett R P, Castellucci E, Bonneau M, Dujardin G, Leach S 1985 Chem. Phys. 92 43
[17]	Cockett M C R, Goode J G, Lawley K P, Donovan R J 1995 J. Chem. Phys. 102 5226
[18]	Cockett M C R 1995 J. Phys. Chem. 99 16228
[19]	Cockett M C R, Donovan R J, Lawley K P 1996 J. Chem. Phys. 105 3347
[20]	Gudeman C S, Megemann M H, Pfaff J, Saykally R J 1983 Phys. Rev. Lett. 50 727
[21]	Western C M 2017 J. Quant. Spectrosc. Radiat. Transf. 186 221
[22]	Hanneke D, Carollo R A, Lane D A 2016 Phys. Rev. A 94 050101

施引文献

[1]	Barrow J D 2005 Phil. Trans. Roy. Soc. 363 2139
[2]	Uzan J P 2011 Living Rev. Relat. 14 2
[3]	Dzuba V A, Flambaum V V, Webb J K 1999 Phys. Rev. Lett. 82 888
[4]	Webb J K, King J A, Murphy M T, Flambaum V V, Carswell R F, Bainbridge M B 2011 Phys. Rev. Lett. 107 191101
[5]	Rosenband T, Hume D B, Schmidt P O, Chou C W, Brusch A, Lorini L, Oskay W H, Drullinger R E, Fortier T M, Stalnaker J E, Diddams S A, Swann W C, Newbury N R, Itano W M, Wineland D J, Bergquist J C 2008 Science 319 1808
[6]	Leefer N, Weber C T M, Cingoz A, Torgerson J R, Budker D 2013 Phys. Rev. Lett. 111 060801
[7]	Berengut J C, Dzuba V A, Flambaum V, Porsev S G 2009 Phys. Rev. Lett. 102 210801
[8]	Huntemann N, Lipphardt B, Tamm C, Gerginov V, Weyers S, Peik E 2014 Phys. Rev. Lett. 113 210802
[9]	Li J Q, Balasubramanian K 1989 J. Mol. Spectrosc. 138 162
[10]	de Jong W A, Visscher L, Nieuwpoort W C 1997 J. Chem. Phys. 107 9046
[11]	Zhao S T, Liang G Y, Li R, Li Q N, Zhang Z G, Yan B 2017 Acta Phys. Sin. 66 063103 (in Chinese)[赵书涛, 梁桂颖, 李瑞, 李奇楠, 张志国, 闫冰 2017 物理学报 66 063103]
[12]	Huang D H, Wan M J, Wang F H, Yang J S, Cao Q L, Wang J H 2016 Acta Phys. Sin. 65 063102 (in Chinese)[黄多辉, 万明杰, 王藩侯, 杨俊升, 曹启龙, 王金花 2016 物理学报 65 063102]
[13]	Deng L H, Zhu Y Y, Li C L, Chen Y Q 2012 J. Chem. Phys. 137 054308
[14]	Shelkovnikov A, Butcher R J, Chardonnet C, Amy-Klein A 2008 Phys. Rev. Lett. 100 150801
[15]	Pasteka L F, Borschevsky A, Flambaum V V, Schwerdtfeger P 2015 Phys. Rev. A 92 012103
[16]	Tuckett R P, Castellucci E, Bonneau M, Dujardin G, Leach S 1985 Chem. Phys. 92 43
[17]	Cockett M C R, Goode J G, Lawley K P, Donovan R J 1995 J. Chem. Phys. 102 5226
[18]	Cockett M C R 1995 J. Phys. Chem. 99 16228
[19]	Cockett M C R, Donovan R J, Lawley K P 1996 J. Chem. Phys. 105 3347
[20]	Gudeman C S, Megemann M H, Pfaff J, Saykally R J 1983 Phys. Rev. Lett. 50 727
[21]	Western C M 2017 J. Quant. Spectrosc. Radiat. Transf. 186 221
[22]	Hanneke D, Carollo R A, Lane D A 2016 Phys. Rev. A 94 050101

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