Extended analysis of the ν 12 band of 12 C 2 H 4 for astrophysical applications: Line strengths, widths, and shifts

O. N. Ulenikov, E. S. Bekhtereva, O. V. Gromova, A. N. Kakaulin, C. Sydow, S. Bauerecker

Research output: Contribution to journalArticle

Abstract

The high-resolution infrared spectra of 12 C 2 H 4 were analyzed in the region of 1360 – 1530 cm −1 , where the strong ν 12 band is located. 998 line strengths (1491 transitions) were determined from the fit of their line shapes with a Hartmann–Tran profile (J max =48 and K a max =17) which is about two times more than in the preceding studies. These data were used in the fit of the effective dipole moment parameters and six such parameters were obtained which reproduce the strengths of the 998 initial lines (1491 transitions) with the d rms =2.31%. Self–broadening and self-shift coefficients were determined from the multi–spectrum analysis for sets of lines (JK a =K a K c )←(J K a K c ), K a =0,1,2,3,4,5 (in general, 253 lines for determination of self-broadening coefficients and 225 lines for determination of self-shift coefficients). The line list of 19186 transitions is documented.

Original languageEnglish
Pages (from-to)57-66
Number of pages10
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume233
DOIs
Publication statusPublished - 1 Aug 2019

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Dipole moment
astrophysics
Infrared radiation
shift
coefficients
lists
line shape
dipole moments
infrared spectra
high resolution
profiles

Keywords

  • Half-widths and shifts of lines
  • High-resolution spectra of C H
  • Individual line strengths of the v band
  • v band of C H ethylene

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Cite this

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title = "Extended analysis of the ν 12 band of 12 C 2 H 4 for astrophysical applications: Line strengths, widths, and shifts",
abstract = "The high-resolution infrared spectra of 12 C 2 H 4 were analyzed in the region of 1360 – 1530 cm −1 , where the strong ν 12 band is located. 998 line strengths (1491 transitions) were determined from the fit of their line shapes with a Hartmann–Tran profile (J max =48 and K a max =17) which is about two times more than in the preceding studies. These data were used in the fit of the effective dipole moment parameters and six such parameters were obtained which reproduce the strengths of the 998 initial lines (1491 transitions) with the d rms =2.31{\%}. Self–broadening and self-shift coefficients were determined from the multi–spectrum analysis for sets of lines (JK a =K a ′ K c )←(J ′ K a ′ K c ′ ), K a ′ =0,1,2,3,4,5 (in general, 253 lines for determination of self-broadening coefficients and 225 lines for determination of self-shift coefficients). The line list of 19186 transitions is documented.",
keywords = "Half-widths and shifts of lines, High-resolution spectra of C H, Individual line strengths of the v band, v band of C H ethylene",
author = "Ulenikov, {O. N.} and Bekhtereva, {E. S.} and Gromova, {O. V.} and Kakaulin, {A. N.} and C. Sydow and S. Bauerecker",
year = "2019",
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TY - JOUR

T1 - Extended analysis of the ν 12 band of 12 C 2 H 4 for astrophysical applications

T2 - Line strengths, widths, and shifts

AU - Ulenikov, O. N.

AU - Bekhtereva, E. S.

AU - Gromova, O. V.

AU - Kakaulin, A. N.

AU - Sydow, C.

AU - Bauerecker, S.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - The high-resolution infrared spectra of 12 C 2 H 4 were analyzed in the region of 1360 – 1530 cm −1 , where the strong ν 12 band is located. 998 line strengths (1491 transitions) were determined from the fit of their line shapes with a Hartmann–Tran profile (J max =48 and K a max =17) which is about two times more than in the preceding studies. These data were used in the fit of the effective dipole moment parameters and six such parameters were obtained which reproduce the strengths of the 998 initial lines (1491 transitions) with the d rms =2.31%. Self–broadening and self-shift coefficients were determined from the multi–spectrum analysis for sets of lines (JK a =K a ′ K c )←(J ′ K a ′ K c ′ ), K a ′ =0,1,2,3,4,5 (in general, 253 lines for determination of self-broadening coefficients and 225 lines for determination of self-shift coefficients). The line list of 19186 transitions is documented.

AB - The high-resolution infrared spectra of 12 C 2 H 4 were analyzed in the region of 1360 – 1530 cm −1 , where the strong ν 12 band is located. 998 line strengths (1491 transitions) were determined from the fit of their line shapes with a Hartmann–Tran profile (J max =48 and K a max =17) which is about two times more than in the preceding studies. These data were used in the fit of the effective dipole moment parameters and six such parameters were obtained which reproduce the strengths of the 998 initial lines (1491 transitions) with the d rms =2.31%. Self–broadening and self-shift coefficients were determined from the multi–spectrum analysis for sets of lines (JK a =K a ′ K c )←(J ′ K a ′ K c ′ ), K a ′ =0,1,2,3,4,5 (in general, 253 lines for determination of self-broadening coefficients and 225 lines for determination of self-shift coefficients). The line list of 19186 transitions is documented.

KW - Half-widths and shifts of lines

KW - High-resolution spectra of C H

KW - Individual line strengths of the v band

KW - v band of C H ethylene

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