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PGOPHER: A Program for Simulating Rotational, Vibrational and Electronic Spectra

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)221-242
Number of pages23
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume186
Early online date16 Apr 2016
DOIs
StatePublished - Jan 2017

Abstract

The PGOPHER program is a general purpose program for simulating and fitting molecular spectra, particularly the rotational structure. The current version can handle linear molecules, symmetric tops and asymmetric tops and many possible transitions, both allowed and forbidden, including multiphoton and Raman spectra in addition to the common electric dipole absorptions. Many different interactions can be included in the calculation, including those arising from electron and nuclear spin, and external electric and magnetic fields. Multiple states and interactions between them can also be accounted for, limited only by available memory. Fitting of experimental data can be to line positions (in many common formats), intensities or band contours and the parameters determined can be level populations as well as rotational constants. PGOPHER is provided with a powerful and flexible graphical user interface to simplify many of the tasks required in simulating, understanding and fitting molecular spectra, including Fortrat diagrams and energy level plots in addition to overlaying experimental and simulated spectra. The program is open source, and can be compiled with open source tools. This paper provides a formal description of the operation of version 9.1

    Research areas

  • Molecular spectra, Rotational energy levels, Perturbations, Vibrational Energy Levels, Hyperfine structure

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    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0022407316300437. Please refer to any applicable terms of use of the publisher.

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    License: CC BY-NC-ND

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