Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy

C. F. Cheng; J. Hussels; M. Niu; H. L. Bethlem; K. S.E. Eikema; E. J. Salumbides; W. Ubachs; M. Beyer; N. Hölsch; J. A. Agner; F. Merkt; L. G. Tao; S. M. Hu; Ch Jungen

doi:10.1103/PhysRevLett.121.013001

Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy

C. F. Cheng, J. Hussels, M. Niu, H. L. Bethlem, K. S.E. Eikema, E. J. Salumbides, W. Ubachs, M. Beyer, N. Hölsch, J. A. Agner, F. Merkt, L. G. Tao, S. M. Hu, Ch Jungen

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Abstract

The ionization energy of ortho-H2 has been determined to be EIo(H2)/(hc)=124 357.238 062(25) cm-1 from measurements of the GK(1,1)-X(0,1) interval by Doppler-free, two-photon spectroscopy using a narrow band 179-nm laser source and the ionization energy of the GK(1,1) state by continuous-wave, near-infrared laser spectroscopy. EIo(H2) was used to derive the dissociation energy of H2, D0N=1(H2), at 35 999.582 894(25) cm-1 with a precision that is more than one order of magnitude better than all previous results. The new result challenges calculations of this quantity and represents a benchmark value for future relativistic and QED calculations of molecular energies.

Original language	English
Article number	013001
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review Letters
Volume	121
Issue number	1
Early online date	3 Jul 2018
DOIs	https://doi.org/10.1103/PhysRevLett.121.013001
Publication status	Published - 6 Jul 2018

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PhysRevLett.121.013001_Dissociation Energy of the Hydrogen Molecule at 10-9 AccuracyFinal published version, 614 KBLicence: Article 25fa Dutch Copyright Act

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title = "Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy",

abstract = "The ionization energy of ortho-H2 has been determined to be EIo(H2)/(hc)=124 357.238 062(25) cm-1 from measurements of the GK(1,1)-X(0,1) interval by Doppler-free, two-photon spectroscopy using a narrow band 179-nm laser source and the ionization energy of the GK(1,1) state by continuous-wave, near-infrared laser spectroscopy. EIo(H2) was used to derive the dissociation energy of H2, D0N=1(H2), at 35 999.582 894(25) cm-1 with a precision that is more than one order of magnitude better than all previous results. The new result challenges calculations of this quantity and represents a benchmark value for future relativistic and QED calculations of molecular energies.",

author = "Cheng, {C. F.} and J. Hussels and M. Niu and Bethlem, {H. L.} and Eikema, {K. S.E.} and Salumbides, {E. J.} and W. Ubachs and M. Beyer and N. H{\"o}lsch and Agner, {J. A.} and F. Merkt and Tao, {L. G.} and Hu, {S. M.} and Ch Jungen",

year = "2018",

month = jul,

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doi = "10.1103/PhysRevLett.121.013001",

language = "English",

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T1 - Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy

AU - Cheng, C. F.

AU - Hussels, J.

AU - Niu, M.

AU - Bethlem, H. L.

AU - Eikema, K. S.E.

AU - Salumbides, E. J.

AU - Ubachs, W.

AU - Beyer, M.

AU - Hölsch, N.

AU - Agner, J. A.

AU - Merkt, F.

AU - Tao, L. G.

AU - Hu, S. M.

AU - Jungen, Ch

PY - 2018/7/6

Y1 - 2018/7/6

N2 - The ionization energy of ortho-H2 has been determined to be EIo(H2)/(hc)=124 357.238 062(25) cm-1 from measurements of the GK(1,1)-X(0,1) interval by Doppler-free, two-photon spectroscopy using a narrow band 179-nm laser source and the ionization energy of the GK(1,1) state by continuous-wave, near-infrared laser spectroscopy. EIo(H2) was used to derive the dissociation energy of H2, D0N=1(H2), at 35 999.582 894(25) cm-1 with a precision that is more than one order of magnitude better than all previous results. The new result challenges calculations of this quantity and represents a benchmark value for future relativistic and QED calculations of molecular energies.

AB - The ionization energy of ortho-H2 has been determined to be EIo(H2)/(hc)=124 357.238 062(25) cm-1 from measurements of the GK(1,1)-X(0,1) interval by Doppler-free, two-photon spectroscopy using a narrow band 179-nm laser source and the ionization energy of the GK(1,1) state by continuous-wave, near-infrared laser spectroscopy. EIo(H2) was used to derive the dissociation energy of H2, D0N=1(H2), at 35 999.582 894(25) cm-1 with a precision that is more than one order of magnitude better than all previous results. The new result challenges calculations of this quantity and represents a benchmark value for future relativistic and QED calculations of molecular energies.

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JO - Physical Review Letters

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Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy

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