SPEARS: A Database-Invariant Spectral modeling API

Murzyn, C. M.; Jans, E. R.; Clemenson, M. D.

doi:10.1016/j.jqsrt.2021.107958

SPEARS: A Database-Invariant Spectral modeling API

Journal Article · Wed Oct 13 00:00:00 EDT 2021 · Journal of Quantitative Spectroscopy and Radiative Transfer

DOI:https://doi.org/10.1016/j.jqsrt.2021.107958· OSTI ID:1834149

Murzyn, C. M. ^[1]; Jans, E. R. ^[1]; Clemenson, M. D. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The Spectral Physics Environment for Advanced Remote Sensing (SPEARS) application programming interface (API) is a Python-based, line-by-line, local thermal equilibrium (LTE) spectral modeling code which is optimized for simultaneously synthesizing optical spectra from any combination of fundamental spectroscopic databases. In this article, we contribute two novel spectral modeling techniques to the scientific literature. First we describe how SPEARS integrates a physics-based collisional model for calculating pressure broadening in the absence of available broadening coefficients. With this collisional model implementation, a generalized approach to fundamental spectroscopic databases can be achieved across multiple databases. We also detail our adaptive grid mesh algorithm developed to make the code scalable for simulating large spectral bandwidths at high spectral fidelity using intuitive grid parameters. Here, we present comparisons to other modeling tools, experiments, and provide a discussion on the SPEARS user interface.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 1834149

Alternate ID(s):: OSTI ID: 1862495

Report Number(s):: SAND--2021-13379J; 701336

Journal Information:: Journal of Quantitative Spectroscopy and Radiative Transfer, Journal Name: Journal of Quantitative Spectroscopy and Radiative Transfer Vol. 277; ISSN 0022-4073

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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optical spectroscopy
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SPEARS: A Database-Invariant Spectral modeling API

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