Dissociation energy of the hydrogen molecule

Dissociation energy of the hydrogen molecule

The threshold value of the dissociation limit of H2(B-prime 1Sigma(+)u) = H(1s)+H(2s) is determined at 118,377.06 +/- 0.04/cm by means of fluorescence-excitation spectroscopy at about 84.5 nm. The value of D0(H2) is compared to theoretically computed values that account for nonadiabatic, relativisti...

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Veröffentlicht in:Physical review letters 1992-04, Vol.68 (14), p.2149-2152
Hauptverfasser: BALAKRISHNAN, A, SMITH, V, STOICHEFF, B. P
Format: Artikel
Sprache:eng
Schlagworte:
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)
ATOMIC AND MOLECULAR PHYSICS
Bond strengths, dissociation energies
CORRECTIONS
DATA
DISSOCIATION ENERGY
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
ENERGY LEVELS
Exact sciences and technology
EXCITED STATES
EXPERIMENTAL DATA
EXTREME ULTRAVIOLET RADIATION
FLUORESCENCE
GROUND STATES
HYDROGEN
INFORMATION
IONIZATION POTENTIAL
LUMINESCENCE
Molecular properties and interactions with photons
NONMETALS
NUMERICAL DATA
Physics
Properties of molecules and molecular ions
RADIATIONS
RADIATIVE CORRECTIONS
SPECTRA
THRESHOLD ENERGY
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA
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Zusammenfassung:The threshold value of the dissociation limit of H2(B-prime 1Sigma(+)u) = H(1s)+H(2s) is determined at 118,377.06 +/- 0.04/cm by means of fluorescence-excitation spectroscopy at about 84.5 nm. The value of D0(H2) is compared to theoretically computed values that account for nonadiabatic, relativistic, and radiative considerations. The experimental and theoretical values of D0(H2) are in agreement, and when combined with calculations of the ionization energy of H2m the value for D0(H2(+)) is shown to agree with the theoretically predicted value. (C.C.S.)
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.68.2149