Dissociation Energy of the Hydrogen Molecule at 10^{-9} Accuracy

Physical Review Letters
C-F ChengCh Jungen

Abstract

The ionization energy of ortho-H_{2} has been determined to be E_{I}^{o}(H_{2})/(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. E_{I}^{o}(H_{2}) was used to derive the dissociation energy of H_{2}, D_{0}^{N=1}(H_{2}), 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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Citations

Sep 14, 2018·Physical Chemistry Chemical Physics : PCCP·Liming Wang, Zong-Chao Yan
Oct 17, 2018·Physical Chemistry Chemical Physics : PCCP·Krzysztof Pachucki, Jacek Komasa
Oct 18, 2018·Physical Chemistry Chemical Physics : PCCP·Nicolas HölschFrédéric Merkt
Apr 16, 2020·Physical Chemistry Chemical Physics : PCCP·K-F LaiE J Salumbides
Oct 1, 2019·Optics Letters·M L DioufW Ubachs
Sep 1, 2018·Physical Review Letters·Mariusz PuchalskiKrzysztof Pachucki
Nov 18, 2018·The Journal of Chemical Physics·Adrian H Mühlbach, Markus Reiher
Apr 2, 2019·Physical Review Letters·Nicolas HölschFrédéric Merkt
Oct 24, 2019·The Journal of Chemical Physics·Andrea MuoloMarkus Reiher
Apr 2, 2019·Physical Review Letters·Mariusz PuchalskiKrzysztof Pachucki
Jul 6, 2019·The Journal of Chemical Physics·Edit Mátyus, Stefan Teufel

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