Formation of Mercury Molecules

Details Formation of Mercury Molecules Formation of Mercury Molecules

Jun 1935

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1935natur.135..999a&link_type=abstract

Nature, Volume 135, Issue 3424, pp. 999-1000 (1935).

Physics

Scientific paper

IT has long been known that mercury vapour is ionised by photons having energies considerably less than that corresponding to the ionisation potential of the mercury atom. Rouse and Giddings1 showed in 1926 that mercury vapour is ionised by its resonance radiation, 2537 A. To explain this effect, Houtermans2 suggested that an excited atom in the 23P1 state of 4.9 volts energy may combine with a metastable atom in the 23P0 state of 4.7 volts energy to form an ionised molecule and a free electron. The energy available for ionisation of this molecule is (4.9 + 4.7) volts plus the heat of dissociation of the neutral molecule, which Winans3 gives from band spectra data as 0.15 volt, making a total energy of 9.75 volts.

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