Spectra of I2+ for possible measurement of α and μ constant

Xiu Li Mu; Chuan Liang Li; Lun Hua Deng; Hai Ling Wang

doi:10.7498/aps.66.233301

Spectra of I₂⁺ for possible measurement of α and μ constant

Xiu Li Mu
, Chuan Liang Li
, Lun Hua Deng^*
, Hai Ling Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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 A²Π_3/2-X²Π_3/2 system. The accurate rotational molecular constants of 5 levels in X²Π_3/2 state and 9 levels in A²Π_3/2 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 X²Π_3/2 and X²Π_1/2should be able to achieve the sensitivities of δα/α ≈ 2.37×10^-19 a^-1 and δμ/μ ≈ 1.18×10^-18 a^-1.

Original language	English
Article number	233301
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	66
Issue number	23
DOIs	https://doi.org/10.7498/aps.66.233301
State	Published - 5 Dec 2017
Externally published	Yes

Keywords

Molecular spectroscopy
Precision measurement
Spectrum of I
α constant
μ constant

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10.7498/aps.66.233301

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title = "Spectra of I2+ for possible measurement of α and μ constant",

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 X2Π1/2should 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 = "Molecular spectroscopy, Precision measurement, Spectrum of I, α constant, μ constant",

author = "Mu, \{Xiu Li\} and Li, \{Chuan Liang\} and Deng, \{Lun Hua\} and Wang, \{Hai Ling\}",

note = "Publisher Copyright: {\textcopyright} 2017 Chinese Physical Society.",

year = "2017",

month = dec,

day = "5",

doi = "10.7498/aps.66.233301",

language = "英语",

volume = "66",

journal = "Wuli Xuebao/Acta Physica Sinica",

issn = "1000-3290",

publisher = "Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences",

number = "23",

}

TY - JOUR

T1 - Spectra of I2+ for possible measurement of α and μ constant

AU - Mu, Xiu Li

AU - Li, Chuan Liang

AU - Deng, Lun Hua

AU - Wang, Hai Ling

PY - 2017/12/5

Y1 - 2017/12/5

N2 - 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 X2Π1/2should be able to achieve the sensitivities of δα/α ≈ 2.37×10-19 a-1 and δμ/μ ≈ 1.18×10-18 a-1.

AB - 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 X2Π1/2should be able to achieve the sensitivities of δα/α ≈ 2.37×10-19 a-1 and δμ/μ ≈ 1.18×10-18 a-1.

KW - Molecular spectroscopy

KW - Precision measurement

KW - Spectrum of I

KW - α constant

KW - μ constant

UR - https://www.scopus.com/pages/publications/85040736569

U2 - 10.7498/aps.66.233301

DO - 10.7498/aps.66.233301

M3 - 文章

AN - SCOPUS:85040736569

SN - 1000-3290

VL - 66

JO - Wuli Xuebao/Acta Physica Sinica

JF - Wuli Xuebao/Acta Physica Sinica

IS - 23

M1 - 233301

ER -

Spectra of I₂⁺ for possible measurement of α and μ constant

Abstract

Keywords

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