Oscillator strength and linewidth measurements of dipole-allowed transitions in N214 between 93.5 and 99.5nm
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説明
<jats:p>Line oscillator strengths in 16 electric dipole-allowed bands of N214 in the 93.5–99.5nm(106950−100500cm−1) region have been measured at an instrumental resolution of 6.5×10−4nm(0.7cm−1). The transitions terminate on vibrational levels of the 3pσΣu+1, 3pπΠu1, and 3sσΠu1 Rydberg states and of the b′Σu+1 and bΠu1 valence states. The J dependences of band f values derived from the experimental line f values are reported as polynomials in J′(J′+1) and are extrapolated to J′=0 in order to facilitate comparisons with results of coupled-Schrödinger-equation calculations that do not take into account rotational interactions. Most bands in this study reveal a marked J dependence of the f values and/or display anomalous P-, Q- and R-branch intensity patterns. These patterns should help inform future spectroscopic models that incorporate rotational effects, and these are critical for the construction of realistic atmospheric radiative transfer models. Linewidth measurements are reported for four bands. Information provided by the J dependences of the experimental linewidths should be of use in the development of a more complete understanding of the predissociation mechanisms in N2.</jats:p>
収録刊行物
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- The Journal of Chemical Physics
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The Journal of Chemical Physics 123 2005-12-01
AIP Publishing