skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Theoretical modeling and analysis of the emission spectra of a ChemCam standard: Basalt BIR-1A

Abstract

We report here on efforts to perform theoretical modeling of the emission spectrum measured from a basalt sample. We compare our calculations with measurements that were made to provide standards for the ChemCam instrument on the Mars Science Laboratory. We find that to obtain good agreement between modeling and the measurement, it is necessary to determine atomic and ionic level populations via a multi-element approach in which the free electron density that is created influences all the species within the plasma. Calculations that consider each element separately are found to be in poorer agreement with the measured spectrum, indicating that the ‘matrix effect’ term often used to describe the influence of other species on the emission spectrum from a given element is due to the influence of the global electron density of the plasma. We explore the emission features in both the visible and near-infrared wavelength ranges, and also examine radiation transport effects for some of the most intense features found in the basalt spectrum. We also provide comparisons of the ChemCam measurement with new high-resolution spectral measurements.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); LANL Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1489944
Alternate Identifier(s):
OSTI ID: 1422665
Report Number(s):
LA-UR-15-21167
Journal ID: ISSN 0584-8547
Grant/Contract Number:  
AC52-06NA25396; AC5206NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Spectrochimica Acta. Part B, Atomic Spectroscopy
Additional Journal Information:
Journal Volume: 110; Journal ID: ISSN 0584-8547
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; LIBS, basalt

Citation Formats

Colgan, J., Judge, E. J., Johns, H. M., Kilcrease, D. P., Barefield, J. E., McInroy, R., Hakel, P., Wiens, R. C., and Clegg, S. M. Theoretical modeling and analysis of the emission spectra of a ChemCam standard: Basalt BIR-1A. United States: N. p., 2015. Web. doi:10.1016/j.sab.2015.05.005.
Colgan, J., Judge, E. J., Johns, H. M., Kilcrease, D. P., Barefield, J. E., McInroy, R., Hakel, P., Wiens, R. C., & Clegg, S. M. Theoretical modeling and analysis of the emission spectra of a ChemCam standard: Basalt BIR-1A. United States. doi:10.1016/j.sab.2015.05.005.
Colgan, J., Judge, E. J., Johns, H. M., Kilcrease, D. P., Barefield, J. E., McInroy, R., Hakel, P., Wiens, R. C., and Clegg, S. M. Sat . "Theoretical modeling and analysis of the emission spectra of a ChemCam standard: Basalt BIR-1A". United States. doi:10.1016/j.sab.2015.05.005. https://www.osti.gov/servlets/purl/1489944.
@article{osti_1489944,
title = {Theoretical modeling and analysis of the emission spectra of a ChemCam standard: Basalt BIR-1A},
author = {Colgan, J. and Judge, E. J. and Johns, H. M. and Kilcrease, D. P. and Barefield, J. E. and McInroy, R. and Hakel, P. and Wiens, R. C. and Clegg, S. M.},
abstractNote = {We report here on efforts to perform theoretical modeling of the emission spectrum measured from a basalt sample. We compare our calculations with measurements that were made to provide standards for the ChemCam instrument on the Mars Science Laboratory. We find that to obtain good agreement between modeling and the measurement, it is necessary to determine atomic and ionic level populations via a multi-element approach in which the free electron density that is created influences all the species within the plasma. Calculations that consider each element separately are found to be in poorer agreement with the measured spectrum, indicating that the ‘matrix effect’ term often used to describe the influence of other species on the emission spectrum from a given element is due to the influence of the global electron density of the plasma. We explore the emission features in both the visible and near-infrared wavelength ranges, and also examine radiation transport effects for some of the most intense features found in the basalt spectrum. We also provide comparisons of the ChemCam measurement with new high-resolution spectral measurements.},
doi = {10.1016/j.sab.2015.05.005},
journal = {Spectrochimica Acta. Part B, Atomic Spectroscopy},
issn = {0584-8547},
number = ,
volume = 110,
place = {United States},
year = {2015},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Figures / Tables:

Table 1 Table 1: Composition (in weight percentage of the oxide) of the BIR1 basalt sample from which a LIBS plasma was created and analyzed using ChemCam as described in20.

Save / Share: