Journal
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
Volume 217, Issue -, Pages 29-34Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2018.05.021
Keywords
NH; Linelist; A-X transition; Einstein A values; Lifetimes; Herman-Wallis effect
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Funding
- NASA laboratory astrophysics program
- Spanish Ministry of Economy and Competitiveness (MINECO) [AYA201458082-P, AYA-2017-88254-P]
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A new linelist for the A(3)Pi-X-3 Sigma(-) electronic transition of NH has been prepared using line positions from the literature and calculated line intensities. High level ab initio calculations were performed with the MOLPRO program to obtain the A-X transition dipole moment function. Potential energy curves and line strengths were calculated with Le Roy's RKR1 and LEVEL programs. Line intensities and Einstein A values were calculated with Western's PGOPHER program after converting the Hund's case (b) output of LEVEL to Hund's case (a) input needed for PGOPHER. The Herman-Wallis effect is included in the Einstein A calculations of the bands for the levels with nu' = 0 - 2 and nu = 0 - 6. (C) 2018 Published by Elsevier Ltd.
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