Open AccessTheoretical Study of the Rotational Structure of the c4′1Σu + (6)–X1Σg +(0–9) Absorption Bands of N2
Author(s) -
A. M. Velasco,
José L. Alonso,
Pilar Redondo,
C. Lavı́n
Publication year - 2021
Publication title -
astrophysical journal/the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.3847/1538-4357/ac2fa3
Subject(s) - physics , atomic physics , spectral line , quantum number , valence (chemistry) , rydberg formula , absorption spectroscopy , rydberg state , ion , ionization , quantum mechanics , astronomy
We have theoretically determined the absorption oscillator strengths and wavenumbers for rotationally resolved transitions of the c 4 ′ 1 Σ u + (6)-X 1 Σ g + (0–9) bands of N 2 , which are relevant to analyze the spectra of planetary atmospheres. The Molecular Quantum Defect Orbital method has been used in our calculations. The interaction between the c 4 ′ 1 Σ u + (6) Rydberg state and the b′ 1 Σ u + valence states has been considered using an adequate rovibronic energy matrix. In addition, we have calculated the lifetimes of the rotational levels of the c 4 ′ 1 Σ u + (6) state. We hope that the reported data, most of them for the first time, can be useful in the interpretation of planetary atmospheres where N 2 is present.