Combining HITRAN linebyline UV cross section and PNNL

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

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

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

Hitran-PC line-by-line calculation overview

Additional spectral features

Hitran-PC Interface Overview New “Info Panel”

5 Tabs of the “Info Panel” Calculation parameters HITRAN line-by-line PNNL IR HITRAN Cross Sections Manual input spectra

Displayed spectrum: Zoom-in / Zoom-out Magnification of a selected region – Spectra stored in RAM after the calculation Ability to zoom out

Slant Path Layer Editor Geometry of the slant path Slant path layer list

Slant path calculation

Adding PNNL and UV cross sections to HITRAN line-by-line (Path 1000 m) 100 NO 2 (Cross sections) Trimethylamine (PNNL) Ozone (Cross sections) 0 0. 245 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: NO 2 (2. 13∙ 10 -2 ppm) , NO 3 (5∙ 10 -5) ppm, O 3 (0. 15 ppm). PNNL: Trimethylamine (0. 5 ppm). 4. 00

Example: comparison of HITRAN line-byline, cross sectional and PNNL spectra: SF 6 100 HITRAN line-by-line Cross section PNNL IR Path length: 1000 m Temperature: 296 K SF 6, 1∙ 10 -7 Atm partial pressure 0 925. 00 Wavenumber, cm-1 HITRAN Line-by-line spectrum of SF 6 (No hot bands) HITRAN Cross sectional spectrum of SF 6 PNNL IR spectrum of SF 6 955. 00

Example: comparison of HITRAN line-byline and PNNL spectra: CH 4 4. 54 Obtained with Hitran-PC 4. 0 for 296 K and 1000 m path Methane (CH 4), 5∙ 10 -7 Atm partial pressure PNNL IR 0 2. 3 Wavelength, micrometers HITRAN line-by-line spectrum of Methane (CH 4) PNNL IR database spectrum of Methane (CH 4) 2. 35 HITRAN line-by-line

Initial Use of HITRAN / PNNL / Cross_Sections for LIBS / Raman Lidar Calculations

Combined transmission spectrum of the atmosphere in the UV-VIS region obtained with Hitran-PC 4. 0 100 0 0. 245 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): H 2 O (7. 75∙ 103), O 2 (2. 66∙ 10 -2). Cross sections (ppmv): NO 2 (2. 13∙ 10 -2), NO 3 (5∙ 10 -5), O 3 (0. 15). 0. 8

Combining the atmospheric transmission spectrum with the LIDAR equation

Calculated Raman Lidar S/N versus range for Naphtalene spectrum Pt = 25 MW (10 -10 Raman efficiency), telescope area A = 0. 01 m 2

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