Combining HITRAN line-by-line, UV cross section and PNNL databases for Modeling of LIBS and Raman LIDAR

1
Combining HITRAN line-by-line, UV cross section
and PNNL databases for Modeling of LIBS and Raman
LIDAR

• Denis Plutov, Dennis K. Killinger
• Laboratory for Laser Remote Sensing
• Department of Physics
• University of South Florida
• Tampa, FL

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Outline

• Improved Hitran-PC (4.0)
• Combined spectra
• HITRAN Line-by-line
• UV Cross Sections (HITRAN)
• PNNL (Pacific Northwest National Lab) IR Database
• Spectra for modeling LIBS and Raman LIDAR
• Summary

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New capabilities of Hitran-PC 4.0

• HITRAN 2004 database usage
• Addition of aerosols (BACKSCAT 4.0 model)
• Addition of HITRAN cross sections into
  calculations
• Introduction of PNNL IR database into
  calculations
• Ability to carry out calculations for individual
  isotopes
• New operational features

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Hitran-PC line-by-line calculation overview
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Additional spectral features
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Hitran-PC Interface Overview
New Info Panel
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5 Tabs of the Info Panel
Calculation parameters
HITRAN line-by-line
PNNL IR
HITRAN Cross Sections
Manual input spectra
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Displayed spectrum Zoom-in / Zoom-out
Magnification of a selected region Spectra
stored in RAM after the calculation
Ability to zoom out
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Slant Path Layer Editor
Geometry of the slant path
Slant path layer list
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Slant path calculation
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Adding PNNL and UV cross sections to HITRAN
line-by-line (Path 1000 m)
100
NO2 (Cross sections)
Trimethylamine (PNNL)
Ozone (Cross sections)
0
0.245
4.00
Wavelength, micrometers
Combined line-by-line, PNNL IR and Cross
Sectional spectra obtained with the Hitran-PC
(4.0) program. (Path 1000 m. Total
pressure 1 Atm.) Cross sections NO2
(2.1310-2 ppm) , NO3 (510-5) ppm, O3 (0.15
ppm). PNNL Trimethylamine (0.5 ppm).
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Example comparison of HITRAN line-by-line, cross
sectional and PNNL spectra SF6
100
HITRAN line-by-line
Cross section
PNNL IR
Path length 1000 m Temperature 296 K SF6,
110-7 Atm partial pressure
0
925.00
955.00
Wavenumber, cm-1
HITRAN Line-by-line spectrum of SF6 (No hot bands)
HITRAN Cross sectional spectrum of SF6
PNNL IR spectrum of SF6
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Example comparison of HITRAN line-by-line and
PNNL spectra CH4
4.54
Obtained with Hitran-PC 4.0 for 296K and 1000m
path Methane (CH4), 510-7 Atm partial pressure
PNNL IR
0
2.35
2.3
Wavelength, micrometers
HITRAN line-by-line
HITRAN line-by-line spectrum of Methane (CH4)
PNNL IR database spectrum of Methane (CH4)
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Initial Use of HITRAN / PNNL / Cross_Sections for
LIBS / Raman Lidar Calculations
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Combined transmission spectrum of the atmosphere
in the UV-VIS region obtained with Hitran-PC 4.0
100
0
0.245
0.8
Wavelength, micrometers
Transmission spectrum of the atmosphere generated
with Hitran-PC (4.0) for a (1000 m path and a
total pressure of 1 Atm.) Line-by-line (ppmv)
H2O (7.75103), O2 (2.6610-2). Cross sections
(ppmv) NO2 (2.1310-2), NO3 (510-5), O3
(0.15).
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Combining the atmospheric transmission spectrum
with the LIDAR equation
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Calculated Raman Lidar S/N versus rangefor
Naphtalene spectrum
Pt 25 MW (10-10 Raman efficiency), telescope
area A 0.01 m2
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Summary

• Added PNNL and Cross-section to line-by-line
• Initial application to LIBS and Raman LIDAR
  spectral signatures
• Future LIBS and Raman LIDAR and spectral
  component analysis vs. Range