THEv= 3 ← 0S(0)-S(3) ELECTRIC QUADRUPOLE TRANSITIONS OF H2NEAR 0.8 μm

Hu, S.-M.; Pan, Huilin; Cheng, Chuanfu; Sun, Yuxi; Li, X.-F.; Wang, J.; Campargue, A.; Liu, A.-W.

doi:10.1088/0004-637x/749/1/76

Cited by 40 publications

(32 citation statements)

References 26 publications

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“…Some overtone transition frequencies of molecular hydrogen have been determined via single-photon infrared absorptions, with the most recent investigations employing cavity-ringdown (CRDS) techniques [41][42][43]. Despite the sensitivity of CRDS, the extremely weak quadrupole transitions necessitate high-pressure samples subject to pressure shifts in addition to Doppler-broadening.…”

Section: Precision Measurements In Moleculesmentioning

confidence: 99%

“…v = 0 to v = 2, 3) of H 2 and D 2 . The results from recent CRDS studies on the overtone quadrupole transitions of H 2 [41,42] and D 2 [40,43] can be used to extract constraints. The overtone transitions of H 2 and D 2 have intrinsically higher sensitivity of the transitions in comparison to the fundamental ground tone as shown in Fig.…”

Section: B Overtone Vibrations In Neutral Hydrogenmentioning

confidence: 99%

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Bounds on fifth forces from precision measurements on molecules

et al. 2013

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Highly accurate results from frequency measurements on neutral hydrogen molecules H2, HD and D2 as well as the HD + ion can be interpreted in terms of constraints on possible fifth-force interactions. Where the hydrogen atom is a probe for yet unknown lepton-hadron interactions, and the helium atom is sensitive for lepton-lepton interactions, molecules open the domain to search for additional long-range hadron-hadron forces. First principles calculations in the framework of quantum electrodynamics have now advanced to the level that hydrogen molecules and hydrogen molecular ions have become calculable systems, making them a search-ground for fifth forces. Following a phenomenological treatment of unknown hadron-hadron interactions written in terms of a Yukawa potential of the form V5(r) = β exp(−r/λ)/r current precision measurements on hydrogenic molecules yield a constraint β < 1 × 10 −7 eV·Å for long-range hadron-hadron interactions at typical force ranges commensurate with separations of a chemical bond, i.e. λ ≈ 1Å and beyond.

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Section: Precision Measurements In Moleculesmentioning

confidence: 99%

Section: B Overtone Vibrations In Neutral Hydrogenmentioning

confidence: 99%

Bounds on fifth forces from precision measurements on molecules

et al. 2013

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“…For CH 4 and CH 3 D, we compute the opacity using the spectroscopic line parameters from the GEISA 2011 database (Jacquinet-Husson et al, 2008). For the H 2 quadrupolar lines we use the Campargue et al (2012); Hu et al (2012) intensities and positions, and the broadening parameters from Reuter and Sirota (1994). Finally, we take into account the H 2 collision-induced continuum due H 2 , He and CH 4 collision partners using the algorithm and numerical values of Borysow and Frommhold (1986) and Borysow et al (1985Borysow et al ( , 1988.…”

Section: Forward Radiative Transfer Modelmentioning

confidence: 99%

Stratospheric aftermath of the 2010 Storm on Saturn as observed by the TEXES instrument. I. Temperature structure

Fouchet

Greathouse

Spiga

et al. 2016

Icarus

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We report on spectroscopic observations of Saturn's stratosphere in July Icarus 221, 560-586). Our observations confirm that the beacon B0 vertical structure determined by CIRS, with a maximum temperature of 180 ± 1K at 2 hPa, is overlain by a temperature decrease up to the 0.2-hPa pressure level.Our retrieved maximum temperature of 180 ± 1K is colder than that derived by CIRS (200 ± 1K), a difference that may be quantitatively explained by terrestrial atmospheric smearing. We propose a scenario for the formation of the beacon based on the saturation of gravity waves emitted by the GWS.Our observations also reveal that the tail is a planet-encircling disturbance in Saturn's upper stratosphere, oscillating between 0.2 and 0.02 hPa, showing a distinct wavenumber-2 pattern. We propose that this pattern in the upper stratosphere is either the signature of thermal tides generated by the presence of the warm beacon in the mid-stratosphere, or the signature of Rossby wave activity.

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“…These calculations on the ground electronic quantum levels were tested in experiments measuring the dissociation limits of H 2 [23], D 2 [24], and HD [25]. Further, they were compared to the experimental values for the fundamental vibrational splitting in both H 2 and hydrogen isotopomers [26,27], to a measurement of the first overtone in H 2 [28,30] and D 2 [29], a measurement of the second overtone in H 2 [31,32], and measurements of highly excited rotational levels in H 2 [33]. The results from a variety of experimental precision measurements on both the ionic and neutral hydrogen molecules are generally in excellent agreement with the QED calculations, within combined uncertainty limits from theory and experiment.…”

Section: Introductionmentioning

confidence: 99%

Constraints on extra dimensions from precision molecular spectroscopy

et al. 2015

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Accurate investigations of quantum-level energies in molecular systems are shown to provide a testing ground to constrain the size of compactified extra dimensions. This is made possible by recent progress in precision metrology with ultrastable lasers on energy levels in neutral molecular hydrogen (H 2 , HD, and D 2 ) and molecular hydrogen ions (H 2 + , HD + , and D 2 + ). Comparisons between experiment and quantum electrodynamics calculations for these molecular systems can be interpreted in terms of probing large extra dimensions, under which conditions gravity will become much stronger. Molecules are a probe of spacetime geometry at typical distances where chemical bonds are effective (i.e., at length scales of an Å). Constraints on compactification radii for extra dimensions are derived within the Arkani-Hamed-Dimopoulos-Dvali framework, while constraints for curvature or brane separation are derived within the Randall-Sundrum framework. Based on the molecular spectroscopy of D 2 molecules and HD + ions, the compactification size for seven extra dimensions (in connection to M-theory defined in 11 dimensions) of equal size is shown to be limited to μ < R 0.6 m 7 . While limits on compactification sizes of extra dimensions based on other branches of physics are compared, the prospect of further tightening constraints from the molecular method is discussed.

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THEv= 3 ← 0S(0)-S(3) ELECTRIC QUADRUPOLE TRANSITIONS OF H₂NEAR 0.8 μm

Cited by 40 publications

References 26 publications

Bounds on fifth forces from precision measurements on molecules

Bounds on fifth forces from precision measurements on molecules

Stratospheric aftermath of the 2010 Storm on Saturn as observed by the TEXES instrument. I. Temperature structure

Constraints on extra dimensions from precision molecular spectroscopy

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