Measurement of the lifetime of metastable species by electron impact dissociation of molecules

Details Measurement of the lifetime of metastable species by electron impact dissociation of molecules Measurement of the lifetime of metastable species by electron impact dissociation of molecules

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mesct...1..596m&link_type=abstract

Measurement Science and Technology (ISSN 0957-0233), vol. 1, July 1990, p. 596-600.

Other

14

Atomic Excitations, Electron Impact, Gas Dissociation, Metastable State, Molecular Excitation, Electric Dipoles, Nitrogen, Oxygen Atoms, Planetary Atmospheres, Stellar Atmospheres

Scientific paper

Electron impact dissociative excitation of molecules is used to measure the lifetime of metastable species which cannot easily be produced in the laboratory by direct excitation. Two illustrative examples are given. The lifetime of the N2 a1Pi(g) state is measured to be 120 + or - 20 microsec, and the lifetime of the O 5S state to be 185 + or - 30 microsec, both in good agreement with earlier measurements. The method described may be extended to many other metastable species of current interest.

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