The Meinel system (A 2Pi(i)-X 2Sigma(+)) of (N-14)2(+), (N-14)(N-15)+, and (N-15)2(+)

Details The Meinel system (A 2Pi(i)-X 2Sigma(+)) of (N-14)2(+), (N-14)(N-15)+, and (N-15)2(+) The Meinel system (A 2Pi(i)-X 2Sigma(+)) of (N-14)2(+), (N-14)(N-15)+, and (N-15)2(+)

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...413..829b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 2, p. 829-833.

Astronomy and Astrophysics

Astrophysics

6

Emission Spectra, Molecular Excitation, Molecular Ions, Nitrogen, Electron Transitions, Isotopes, Line Spectra, Spectrum Analysis

Scientific paper

The Meinel system A 2Pi(u,i)-X 2Sigma(g)(+) of the nitrogen molecular ion has been excited in a low-pressure discharge and the emission spectrum has been investigated between 6000 and 13,000/cm at high resolution with a Fourier transform spectrometer. Several bands of (N-14)2(+) and (N-15)2(+) corresponding to the levels v = 0, 1, 2 in the lower state and v = 0, 1, 2, 3 in the upper state and (0-0) band of the mixed isotopomer have been recorded. The bands (0-2) for (N-14)2(+), (0-0) for (N-14)(N-15)+, and (0-0), (0-1), (1-2), (1-0), (2-1), (2-0), and (3-1) for (N-15)2(+) are observed and analyzed for the first time, and a global adjustment of the data is carried out for each isotopomer. Rotational constants and molecular equilibrium parameters for the X 2Sigma(+) and A 2Pi states, and isotope shifts are derived. The set of rotational constants obtained permits the wavenumbers of about 1400 observed lines to be recalculated to within 0.006/cm. The physical significance of some effective parameters is discussed.

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