Radiative lifetime of the 5S2 metastable state of N/+/

Details Radiative lifetime of the 5S2 metastable state of N/+/ Radiative lifetime of the 5S2 metastable state of N/+/

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..48..792k&link_type=abstract

Physical Review Letters, vol. 48, Mar. 22, 1982, p. 792-795.

Physics

Atomic Physics

38

Auroral Irradiation, Electron States, Metastable State, Nitrogen Ions, Radiative Lifetime, Spontaneous Emission, Decay Rates, Electric Dipoles, Emission Spectra, Ion Traps (Instrumentation), Quenching (Atomic Physics)

Scientific paper

The radiative lifetime of metastable N(+)(5S2) has been measured to be 4.2 + or - 0.6 msec, a value generally in agreement with theory, by direct monitoring of the spontaneous emission from approximately 1,000,000 ions stored in a radio-frequency ion trap. Additional measurements were made of the quenching rate coefficient (2.5 x 10 to the -9th cu cm/sec) and the production cross section (greater than or equal to 10 to the -18th sq cm) of N(+)(5S2) in N2. This work supports the interpretation of the 2145-A feature in the spectrum of aurorae as being due to N(+)(5S2) emission.

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