Dissociation energy of the hydrogen molecule

Balakrishnan, A.; Smith, V.; Stoicheff, B. P.

doi:10.1103/physrevlett.68.2149

Cited by 110 publications

(56 citation statements)

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“…8 the threshold region is overlapped by the wing of a strongly saturationbroadened resonance, we can derive an approximate value of 118377.2Ϯ0.1 cm Ϫ1 for the 1sϩ2s dissociation energy in the singlet gerade case, 0.14 cm Ϫ1 higher than the most accurate value found in the singlet ungerade system. 1,19 Further studies are needed to investigate the complex system of different dissociation limits that arise from the fine and hyperfine splitting of the nϭ1 and nϭ2 states of the hydrogen atom.…”

Section: ͑5͒mentioning

confidence: 99%

“…18 Direct XUV excitation of the dissociation continuum of electronic ungerade states and detection of the fluorescence of the products by Balakrishnan et al resulted an accurate determination of the dissociation energy of the hydrogen molecule. 1,19 Tsukiyama and co-workers observed a number of singlet gerade levels close to the (nϭ2) limit using resonanceenhanced two-photon transitions, excited by XUV and visible pulsed lasers and detected by observation of their fluorescence in the visible and near infrared. 2,16,20 Lifetimes were deduced from the exponential decay of the fluorescence.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9] These sophisticated techniques are presently employed to bridge the 11 eV gap between the ground state and the first excited singlet state in hydrogen and to drive transitions between excited states.…”

Section: Introductionmentioning

confidence: 99%

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Observation of the I′ 1Πg outer well state in H2 and D2

Reinhold

Lange

Hogervorst

et al. 1998

The Journal of Chemical Physics

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We observed bound levels of the IЈ state in H 2 and D 2 , confined in the outer well of the lowest 1 ⌸ g adiabatic potential close to its (1sϩ2p) dissociation limit, with an equilibrium internuclear distance of Ϸ8 a.u. Rovibronic levels (vϭ0 -2, Jϭ1 -5 for H 2 and vϭ0 -5, Jϭ1 -6 for D 2 ) are populated with pulsed lasers in resonance enhanced XUVϩIR ͑extreme ultravioletϩinfrared͒ excitation, and probed by a third laser pulse. Level energies are measured with an accuracy of Ϸ0.03 cm Ϫ1 , and are in reasonable agreement with predictions from ab initio calculations in adiabatic approximation; the smallness of ⌳-doublet splitting indicating that nonadiabatic interactions with 1 ⌺ g ϩ states are generally weak. Additional resonances are observed close to the nϭ2 dissociation limit, some of which can be assigned as high vibrational levels of the EF 1 ⌺ g ϩ state.

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Section: ͑5͒mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Observation of the I′ 1Πg outer well state in H2 and D2

Reinhold

Lange

Hogervorst

et al. 1998

The Journal of Chemical Physics

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“…Further theoretical [10][11][12] and experimental [13][14][15] work has reduced the discrepancy between theory and experiment to several hundredths of cm −1 . Very recently Liu et al 16 described a hybrid, experimental-theoretical determination of D 0 based on several transition frequency measurements [16][17][18][19] and theoretical calculations of the energy levels of the H + 2 ion.…”

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confidence: 99%

Theoretical Determination of the Dissociation Energy of Molecular Hydrogen

Piszczatowski

Łach

Przybytek

et al. 2009

J. Chem. Theory Comput.

196

238

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The dissociation energy of molecular hydrogen is determined theoretically with a careful estimation of error bars by including nonadiabatic, relativistic, and quantum electrodynamics (QED) corrections. The relativistic and QED corrections were obtained at the adiabatic level of theory by including all contributions of the order α 2 and α 3 as well as the major (one-loop) α 4 term, where α is the fine structure constant. The computed α 0 , α 2 , α 3 , and α 4 components of the dissociation energy of the H 2 isotopomer are 36118.7978 (2) 2

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“…Muonic systems were compared to data in the papers of Frolov [18,20,33,34]. c [35] d [36,37] e [36,38] f [39] The center of mass c is the barycenter of the three masses and it will have a position vector relative to either particle a 1 or a 2 given by…”

Section: Nonadiabaticmentioning

confidence: 99%

Quantum effects of nuclear motion in three-particle diatomic ions

2016

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Article (Published Version) http://sro.sussex.ac.uk Baskerville, Adam L, King, Andrew W and Cox, Hazel (2016) Quantum effects of nuclear motion in three-particle diatomic ions. Physical Review A, 94. 042512. ISSN 1050-2947 This version is available from Sussex Research Online: http://sro.sussex.ac.uk/65251/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way.PHYSICAL REVIEW A 94, 042512 (2016) Quantum effects of nuclear motion in three-particle diatomic ions A high-accuracy, nonrelativistic wave function is used to study nuclear motion in the ground state of three-particle {a + 1 a + 2 a − 3 } electronic and muonic molecular systems without assuming the Born-Oppenheimer approximation. Intracule densities and center-of-mass particle densities show that as the mass ratio m a i /m a 3 , i = 1,2, becomes smaller, the localization of the like-charged particles (nuclei) a 1 and a 2 decreases. A coordinate system is presented to calculate center-of-mass particle densities for systems where a 1 = a 2 . It is shown that the nuclear motion is strongly correlated and depends on the relative masses of the nuclei a 1 and a 2 rather than just their absolute mass. The heavier particle is always more localized and the lighter the partner mass, the greater the localization. It is shown, for systems with m a 1

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Dissociation energy of the hydrogen molecule

Cited by 110 publications

References 15 publications

Observation of the I′ 1Πg outer well state in H2 and D2

Observation of the I′ 1Πg outer well state in H2 and D2

Theoretical Determination of the Dissociation Energy of Molecular Hydrogen

Quantum effects of nuclear motion in three-particle diatomic ions

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