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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.
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Keywords:
- molecular spectroscopy /
- α constant /
- μ constant /
- spectrum of I2+ /
- precision measurement
[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 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 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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[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 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 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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